add use case for employee, itemgroup, doctor, nurse, nutritionist, pharmacist, counter, practiceschedule

internal/use-case/main-use-case/counter/case.go

@@ -0,0 +1,275 @@
+package counter
+
+import (
+	e "simrs-vx/internal/domain/main-entities/counter"
+	"strconv"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	d "github.com/karincake/dodol"
+
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+const source = "counter"
+
+func Create(input e.CreateDto) (*d.Data, error) {
+	data := e.Counter{}
+
+	event := pl.Event{
+		Feature: "Create",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "create")
+
+	err := dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunCreateMiddleware(createPreMw, &input, &data); err != nil {
+			return err
+		}
+
+		if resData, err := CreateData(input, &event, tx); err != nil {
+			return err
+		} else {
+			data = *resData
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunCreateMiddleware(createPostMw, &input, &data); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.II{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "created",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func ReadList(input e.ReadListDto) (*d.Data, error) {
+	var data *e.Counter
+	var dataList []e.Counter
+	var metaList *e.MetaDto
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadList",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readList")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if dataList, metaList, err = ReadListData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":            source,
+			"structure":         "list-data",
+			"status":            "fetched",
+			"page_number":       strconv.Itoa(metaList.PageNumber),
+			"page_size":         strconv.Itoa(metaList.PageSize),
+			"record_totalCount": strconv.Itoa(metaList.Count),
+		},
+		Data: e.ToResponseList(dataList),
+	}, nil
+}
+
+func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
+	var data *e.Counter
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadDetail",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readDetail")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if data, err = ReadDetailData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "fetched",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func Update(input e.UpdateDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: input.Id}
+	var data *e.Counter
+	var err error
+
+	event := pl.Event{
+		Feature: "Update",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "update")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := UpdateData(input, data, &event, tx); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "updated",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}
+
+func Delete(input e.DeleteDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: input.Id}
+	var data *e.Counter
+	var err error
+
+	event := pl.Event{
+		Feature: "Delete",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "delete")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := DeleteData(data, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "deleted",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}

internal/use-case/main-use-case/counter/helper.go

@@ -0,0 +1,26 @@
+/*
+DESCRIPTION:
+Any functions that are used internally by the use-case
+*/
+package counter
+
+import (
+	e "simrs-vx/internal/domain/main-entities/counter"
+)
+
+func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.Counter) {
+	var inputSrc *e.CreateDto
+	if inputT, ok := any(input).(*e.CreateDto); ok {
+		inputSrc = inputT
+	} else {
+		inputTemp := any(input).(*e.UpdateDto)
+		inputSrc = &inputTemp.CreateDto
+	}
+
+	data.Code = inputSrc.Code
+	data.Name = inputSrc.Name
+	data.Number = inputSrc.Number
+	data.Parent_Id = inputSrc.Parent_Id
+	data.Type_Code = inputSrc.Type_Code
+	data.Queue_Code = inputSrc.Queue_Code
+}

internal/use-case/main-use-case/counter/lib.go

@@ -0,0 +1,149 @@
+package counter
+
+import (
+	e "simrs-vx/internal/domain/main-entities/counter"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	gh "github.com/karincake/getuk"
+	"gorm.io/gorm"
+)
+
+func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.Counter, error) {
+	pl.SetLogInfo(event, nil, "started", "DBCreate")
+
+	data := e.Counter{}
+	setData(&input, &data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Create(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-create-fail",
+			Detail: "Database insert failed",
+			Raw:    err,
+		}
+		return nil, pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.Counter, *e.MetaDto, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadList")
+	data := []e.Counter{}
+	pagination := gh.Pagination{}
+	count := int64(0)
+	meta := e.MetaDto{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	tx = tx.
+		Model(&e.Counter{}).
+		Scopes(gh.Filter(input)).
+		Count(&count).
+		Scopes(gh.Paginate(input, &pagination)).
+		Order("\"CreatedAt\" DESC")
+
+	if err := tx.Debug().Find(&data).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, &meta, nil
+		}
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-get-fail",
+			Detail: "Database get failed",
+			Raw:    err,
+		}
+		return nil, nil, pl.SetLogError(event, input)
+
+	}
+	meta.Count = int(count)
+	meta.PageNumber = pagination.PageNumber
+	meta.PageSize = pagination.PageSize
+
+	pl.SetLogInfo(event, nil, "complete")
+	return data, &meta, nil
+}
+
+func ReadDetailData(input e.ReadDetailDto, event *pl.Event, dbx ...*gorm.DB) (*e.Counter, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadDetail")
+	data := e.Counter{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.First(&data, input.Id).Error; err != nil {
+		if processedErr := pu.HandleReadError(err, event, source, input.Id, data); processedErr != nil {
+			return nil, processedErr
+		}
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func UpdateData(input e.UpdateDto, data *e.Counter, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBUpdate")
+	setData(&input, data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Save(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-update-fail",
+			Detail: "Database update failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}
+
+func DeleteData(data *e.Counter, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBDelete")
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Delete(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-delete-fail",
+			Detail: "Database delete failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, data)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}

internal/use-case/main-use-case/counter/middleware-runner.go

@@ -0,0 +1,103 @@
+package counter
+
+import (
+	e "simrs-vx/internal/domain/main-entities/counter"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+type middlewareRunner struct {
+	Event  *pl.Event
+	Tx     *gorm.DB
+	MwType pu.MWType
+}
+
+// NewMiddlewareExecutor creates a new middleware executor
+func newMiddlewareRunner(event *pl.Event, tx *gorm.DB) *middlewareRunner {
+	return &middlewareRunner{
+		Event: event,
+		Tx:    tx,
+	}
+}
+
+// ExecuteCreateMiddleware executes create middleware
+func (me *middlewareRunner) RunCreateMiddleware(middlewares []createMw, input *e.CreateDto, data *e.Counter) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadListMiddleware(middlewares []readListMw, input *e.ReadListDto, data *e.Counter) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadDetailMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Counter) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunUpdateMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Counter) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunDeleteMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Counter) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) setMwType(mwType pu.MWType) {
+	me.MwType = mwType
+}

internal/use-case/main-use-case/counter/middleware.go

@@ -0,0 +1,9 @@
+package counter
+
+// example of middleware
+// func init() {
+// 	createPreMw = append(createPreMw,
+// 		CreateMw{Name: "modif-input", Func: pm.ModifInput},
+// 		CreateMw{Name: "check-data", Func: pm.CheckData},
+// 	)
+// }

internal/use-case/main-use-case/counter/tycovar.go

@@ -0,0 +1,44 @@
+/*
+DESCRIPTION:
+A sample, part of the package that contains type, constants, and/or variables.
+
+In this sample it also provides type and variable regarding the needs of the
+middleware to separate from main use-case which has the basic CRUD
+functionality. The purpose of this is to make the code more maintainable.
+*/
+package counter
+
+import (
+	"gorm.io/gorm"
+
+	e "simrs-vx/internal/domain/main-entities/counter"
+)
+
+type createMw struct {
+	Name string
+	Func func(input *e.CreateDto, data *e.Counter, tx *gorm.DB) error
+}
+
+type readListMw struct {
+	Name string
+	Func func(input *e.ReadListDto, data *e.Counter, tx *gorm.DB) error
+}
+
+type readDetailMw struct {
+	Name string
+	Func func(input *e.ReadDetailDto, data *e.Counter, tx *gorm.DB) error
+}
+
+type UpdateMw = readDetailMw
+type DeleteMw = readDetailMw
+
+var createPreMw []createMw      // preprocess middleware
+var createPostMw []createMw     // postprocess middleware
+var readListPreMw []readListMw  // ..
+var readListPostMw []readListMw // ..
+var readDetailPreMw []readDetailMw
+var readDetailPostMw []readDetailMw
+var updatePreMw []readDetailMw
+var updatePostMw []readDetailMw
+var deletePreMw []readDetailMw
+var deletePostMw []readDetailMw

internal/use-case/main-use-case/doctor/case.go

@@ -0,0 +1,275 @@
+package doctor
+
+import (
+	e "simrs-vx/internal/domain/main-entities/doctor"
+	"strconv"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	d "github.com/karincake/dodol"
+
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+const source = "doctor"
+
+func Create(input e.CreateDto) (*d.Data, error) {
+	data := e.Doctor{}
+
+	event := pl.Event{
+		Feature: "Create",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "create")
+
+	err := dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunCreateMiddleware(createPreMw, &input, &data); err != nil {
+			return err
+		}
+
+		if resData, err := CreateData(input, &event, tx); err != nil {
+			return err
+		} else {
+			data = *resData
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunCreateMiddleware(createPostMw, &input, &data); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.II{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "created",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func ReadList(input e.ReadListDto) (*d.Data, error) {
+	var data *e.Doctor
+	var dataList []e.Doctor
+	var metaList *e.MetaDto
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadList",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readList")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if dataList, metaList, err = ReadListData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":            source,
+			"structure":         "list-data",
+			"status":            "fetched",
+			"page_number":       strconv.Itoa(metaList.PageNumber),
+			"page_size":         strconv.Itoa(metaList.PageSize),
+			"record_totalCount": strconv.Itoa(metaList.Count),
+		},
+		Data: e.ToResponseList(dataList),
+	}, nil
+}
+
+func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
+	var data *e.Doctor
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadDetail",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readDetail")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if data, err = ReadDetailData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "fetched",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func Update(input e.UpdateDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Doctor
+	var err error
+
+	event := pl.Event{
+		Feature: "Update",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "update")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := UpdateData(input, data, &event, tx); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "updated",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}
+
+func Delete(input e.DeleteDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Doctor
+	var err error
+
+	event := pl.Event{
+		Feature: "Delete",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "delete")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := DeleteData(data, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "deleted",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}

internal/use-case/main-use-case/doctor/helper.go

@@ -0,0 +1,24 @@
+/*
+DESCRIPTION:
+Any functions that are used internally by the use-case
+*/
+package doctor
+
+import (
+	e "simrs-vx/internal/domain/main-entities/doctor"
+)
+
+func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.Doctor) {
+	var inputSrc *e.CreateDto
+	if inputT, ok := any(input).(*e.CreateDto); ok {
+		inputSrc = inputT
+	} else {
+		inputTemp := any(input).(*e.UpdateDto)
+		inputSrc = &inputTemp.CreateDto
+	}
+
+	data.Employee_Id = inputSrc.Employee_Id
+	data.IHS_Number = inputSrc.IHS_Number
+	data.SIP_Number = inputSrc.SIP_Number
+	data.Unit_Id = inputSrc.Unit_Id
+}

internal/use-case/main-use-case/doctor/lib.go

@@ -0,0 +1,149 @@
+package doctor
+
+import (
+	e "simrs-vx/internal/domain/main-entities/doctor"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	gh "github.com/karincake/getuk"
+	"gorm.io/gorm"
+)
+
+func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.Doctor, error) {
+	pl.SetLogInfo(event, nil, "started", "DBCreate")
+
+	data := e.Doctor{}
+	setData(&input, &data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Create(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-create-fail",
+			Detail: "Database insert failed",
+			Raw:    err,
+		}
+		return nil, pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.Doctor, *e.MetaDto, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadList")
+	data := []e.Doctor{}
+	pagination := gh.Pagination{}
+	count := int64(0)
+	meta := e.MetaDto{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	tx = tx.
+		Model(&e.Doctor{}).
+		Scopes(gh.Filter(input)).
+		Count(&count).
+		Scopes(gh.Paginate(input, &pagination)).
+		Order("\"CreatedAt\" DESC")
+
+	if err := tx.Debug().Find(&data).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, &meta, nil
+		}
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-get-fail",
+			Detail: "Database get failed",
+			Raw:    err,
+		}
+		return nil, nil, pl.SetLogError(event, input)
+
+	}
+	meta.Count = int(count)
+	meta.PageNumber = pagination.PageNumber
+	meta.PageSize = pagination.PageSize
+
+	pl.SetLogInfo(event, nil, "complete")
+	return data, &meta, nil
+}
+
+func ReadDetailData(input e.ReadDetailDto, event *pl.Event, dbx ...*gorm.DB) (*e.Doctor, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadDetail")
+	data := e.Doctor{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.First(&data, input.Id).Error; err != nil {
+		if processedErr := pu.HandleReadError(err, event, source, input.Id, data); processedErr != nil {
+			return nil, processedErr
+		}
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func UpdateData(input e.UpdateDto, data *e.Doctor, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBUpdate")
+	setData(&input, data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Save(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-update-fail",
+			Detail: "Database update failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}
+
+func DeleteData(data *e.Doctor, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBDelete")
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Delete(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-delete-fail",
+			Detail: "Database delete failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, data)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}

internal/use-case/main-use-case/doctor/middleware-runner.go

@@ -0,0 +1,103 @@
+package doctor
+
+import (
+	e "simrs-vx/internal/domain/main-entities/doctor"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+type middlewareRunner struct {
+	Event  *pl.Event
+	Tx     *gorm.DB
+	MwType pu.MWType
+}
+
+// NewMiddlewareExecutor creates a new middleware executor
+func newMiddlewareRunner(event *pl.Event, tx *gorm.DB) *middlewareRunner {
+	return &middlewareRunner{
+		Event: event,
+		Tx:    tx,
+	}
+}
+
+// ExecuteCreateMiddleware executes create middleware
+func (me *middlewareRunner) RunCreateMiddleware(middlewares []createMw, input *e.CreateDto, data *e.Doctor) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadListMiddleware(middlewares []readListMw, input *e.ReadListDto, data *e.Doctor) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadDetailMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Doctor) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunUpdateMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Doctor) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunDeleteMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Doctor) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) setMwType(mwType pu.MWType) {
+	me.MwType = mwType
+}

internal/use-case/main-use-case/doctor/middleware.go

@@ -0,0 +1,9 @@
+package doctor
+
+// example of middleware
+// func init() {
+// 	createPreMw = append(createPreMw,
+// 		CreateMw{Name: "modif-input", Func: pm.ModifInput},
+// 		CreateMw{Name: "check-data", Func: pm.CheckData},
+// 	)
+// }

internal/use-case/main-use-case/doctor/tycovar.go

@@ -0,0 +1,44 @@
+/*
+DESCRIPTION:
+A sample, part of the package that contains type, constants, and/or variables.
+
+In this sample it also provides type and variable regarding the needs of the
+middleware to separate from main use-case which has the basic CRUD
+functionality. The purpose of this is to make the code more maintainable.
+*/
+package doctor
+
+import (
+	"gorm.io/gorm"
+
+	e "simrs-vx/internal/domain/main-entities/doctor"
+)
+
+type createMw struct {
+	Name string
+	Func func(input *e.CreateDto, data *e.Doctor, tx *gorm.DB) error
+}
+
+type readListMw struct {
+	Name string
+	Func func(input *e.ReadListDto, data *e.Doctor, tx *gorm.DB) error
+}
+
+type readDetailMw struct {
+	Name string
+	Func func(input *e.ReadDetailDto, data *e.Doctor, tx *gorm.DB) error
+}
+
+type UpdateMw = readDetailMw
+type DeleteMw = readDetailMw
+
+var createPreMw []createMw      // preprocess middleware
+var createPostMw []createMw     // postprocess middleware
+var readListPreMw []readListMw  // ..
+var readListPostMw []readListMw // ..
+var readDetailPreMw []readDetailMw
+var readDetailPostMw []readDetailMw
+var updatePreMw []readDetailMw
+var updatePostMw []readDetailMw
+var deletePreMw []readDetailMw
+var deletePostMw []readDetailMw

internal/use-case/main-use-case/employee/case.go

@@ -0,0 +1,275 @@
+package employee
+
+import (
+	e "simrs-vx/internal/domain/main-entities/employee"
+	"strconv"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	d "github.com/karincake/dodol"
+
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+const source = "employee"
+
+func Create(input e.CreateDto) (*d.Data, error) {
+	data := e.Employee{}
+
+	event := pl.Event{
+		Feature: "Create",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "create")
+
+	err := dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunCreateMiddleware(createPreMw, &input, &data); err != nil {
+			return err
+		}
+
+		if resData, err := CreateData(input, &event, tx); err != nil {
+			return err
+		} else {
+			data = *resData
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunCreateMiddleware(createPostMw, &input, &data); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.II{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "created",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func ReadList(input e.ReadListDto) (*d.Data, error) {
+	var data *e.Employee
+	var dataList []e.Employee
+	var metaList *e.MetaDto
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadList",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readList")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if dataList, metaList, err = ReadListData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":            source,
+			"structure":         "list-data",
+			"status":            "fetched",
+			"page_number":       strconv.Itoa(metaList.PageNumber),
+			"page_size":         strconv.Itoa(metaList.PageSize),
+			"record_totalCount": strconv.Itoa(metaList.Count),
+		},
+		Data: e.ToResponseList(dataList),
+	}, nil
+}
+
+func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
+	var data *e.Employee
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadDetail",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readDetail")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if data, err = ReadDetailData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "fetched",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func Update(input e.UpdateDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Employee
+	var err error
+
+	event := pl.Event{
+		Feature: "Update",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "update")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := UpdateData(input, data, &event, tx); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "updated",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}
+
+func Delete(input e.DeleteDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Employee
+	var err error
+
+	event := pl.Event{
+		Feature: "Delete",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "delete")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := DeleteData(data, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "deleted",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}

internal/use-case/main-use-case/employee/helper.go

@@ -0,0 +1,26 @@
+/*
+DESCRIPTION:
+Any functions that are used internally by the use-case
+*/
+package employee
+
+import (
+	e "simrs-vx/internal/domain/main-entities/employee"
+)
+
+func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.Employee) {
+	var inputSrc *e.CreateDto
+	if inputT, ok := any(input).(*e.CreateDto); ok {
+		inputSrc = inputT
+	} else {
+		inputTemp := any(input).(*e.UpdateDto)
+		inputSrc = &inputTemp.CreateDto
+	}
+
+	data.User_Id = inputSrc.User_Id
+	data.Person_Id = inputSrc.Person_Id
+	data.Position_Code = inputSrc.Position_Code
+	data.Division_Code = inputSrc.Division_Code
+	data.Number = inputSrc.Number
+	data.Status_Code = inputSrc.Status_Code
+}

internal/use-case/main-use-case/employee/lib.go

@@ -0,0 +1,149 @@
+package employee
+
+import (
+	e "simrs-vx/internal/domain/main-entities/employee"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	gh "github.com/karincake/getuk"
+	"gorm.io/gorm"
+)
+
+func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.Employee, error) {
+	pl.SetLogInfo(event, nil, "started", "DBCreate")
+
+	data := e.Employee{}
+	setData(&input, &data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Create(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-create-fail",
+			Detail: "Database insert failed",
+			Raw:    err,
+		}
+		return nil, pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.Employee, *e.MetaDto, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadList")
+	data := []e.Employee{}
+	pagination := gh.Pagination{}
+	count := int64(0)
+	meta := e.MetaDto{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	tx = tx.
+		Model(&e.Employee{}).
+		Scopes(gh.Filter(input)).
+		Count(&count).
+		Scopes(gh.Paginate(input, &pagination)).
+		Order("\"CreatedAt\" DESC")
+
+	if err := tx.Debug().Find(&data).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, &meta, nil
+		}
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-get-fail",
+			Detail: "Database get failed",
+			Raw:    err,
+		}
+		return nil, nil, pl.SetLogError(event, input)
+
+	}
+	meta.Count = int(count)
+	meta.PageNumber = pagination.PageNumber
+	meta.PageSize = pagination.PageSize
+
+	pl.SetLogInfo(event, nil, "complete")
+	return data, &meta, nil
+}
+
+func ReadDetailData(input e.ReadDetailDto, event *pl.Event, dbx ...*gorm.DB) (*e.Employee, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadDetail")
+	data := e.Employee{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.First(&data, input.Id).Error; err != nil {
+		if processedErr := pu.HandleReadError(err, event, source, input.Id, data); processedErr != nil {
+			return nil, processedErr
+		}
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func UpdateData(input e.UpdateDto, data *e.Employee, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBUpdate")
+	setData(&input, data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Save(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-update-fail",
+			Detail: "Database update failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}
+
+func DeleteData(data *e.Employee, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBDelete")
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Delete(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-delete-fail",
+			Detail: "Database delete failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, data)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}

internal/use-case/main-use-case/employee/middleware-runner.go

@@ -0,0 +1,103 @@
+package employee
+
+import (
+	e "simrs-vx/internal/domain/main-entities/employee"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+type middlewareRunner struct {
+	Event  *pl.Event
+	Tx     *gorm.DB
+	MwType pu.MWType
+}
+
+// NewMiddlewareExecutor creates a new middleware executor
+func newMiddlewareRunner(event *pl.Event, tx *gorm.DB) *middlewareRunner {
+	return &middlewareRunner{
+		Event: event,
+		Tx:    tx,
+	}
+}
+
+// ExecuteCreateMiddleware executes create middleware
+func (me *middlewareRunner) RunCreateMiddleware(middlewares []createMw, input *e.CreateDto, data *e.Employee) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadListMiddleware(middlewares []readListMw, input *e.ReadListDto, data *e.Employee) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadDetailMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Employee) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunUpdateMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Employee) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunDeleteMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Employee) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) setMwType(mwType pu.MWType) {
+	me.MwType = mwType
+}

internal/use-case/main-use-case/employee/middleware.go

@@ -0,0 +1,9 @@
+package employee
+
+// example of middleware
+// func init() {
+// 	createPreMw = append(createPreMw,
+// 		CreateMw{Name: "modif-input", Func: pm.ModifInput},
+// 		CreateMw{Name: "check-data", Func: pm.CheckData},
+// 	)
+// }

internal/use-case/main-use-case/employee/tycovar.go

@@ -0,0 +1,44 @@
+/*
+DESCRIPTION:
+A sample, part of the package that contains type, constants, and/or variables.
+
+In this sample it also provides type and variable regarding the needs of the
+middleware to separate from main use-case which has the basic CRUD
+functionality. The purpose of this is to make the code more maintainable.
+*/
+package employee
+
+import (
+	"gorm.io/gorm"
+
+	e "simrs-vx/internal/domain/main-entities/employee"
+)
+
+type createMw struct {
+	Name string
+	Func func(input *e.CreateDto, data *e.Employee, tx *gorm.DB) error
+}
+
+type readListMw struct {
+	Name string
+	Func func(input *e.ReadListDto, data *e.Employee, tx *gorm.DB) error
+}
+
+type readDetailMw struct {
+	Name string
+	Func func(input *e.ReadDetailDto, data *e.Employee, tx *gorm.DB) error
+}
+
+type UpdateMw = readDetailMw
+type DeleteMw = readDetailMw
+
+var createPreMw []createMw      // preprocess middleware
+var createPostMw []createMw     // postprocess middleware
+var readListPreMw []readListMw  // ..
+var readListPostMw []readListMw // ..
+var readDetailPreMw []readDetailMw
+var readDetailPostMw []readDetailMw
+var updatePreMw []readDetailMw
+var updatePostMw []readDetailMw
+var deletePreMw []readDetailMw
+var deletePostMw []readDetailMw

internal/use-case/main-use-case/infra-group/helper.go

@@ -18,5 +18,5 @@ func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.InfraGroup) {
 	}
 	data.Code = inputSrc.Code
 	data.Name = inputSrc.Name
-
+	data.Level = inputSrc.Level
 }

internal/use-case/main-use-case/item-group/case.go

@@ -0,0 +1,275 @@
+package itemgroup
+
+import (
+	e "simrs-vx/internal/domain/main-entities/item-group"
+	"strconv"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	d "github.com/karincake/dodol"
+
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+const source = "item-group"
+
+func Create(input e.CreateDto) (*d.Data, error) {
+	data := e.ItemGroup{}
+
+	event := pl.Event{
+		Feature: "Create",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "create")
+
+	err := dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunCreateMiddleware(createPreMw, &input, &data); err != nil {
+			return err
+		}
+
+		if resData, err := CreateData(input, &event, tx); err != nil {
+			return err
+		} else {
+			data = *resData
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunCreateMiddleware(createPostMw, &input, &data); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.II{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "created",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func ReadList(input e.ReadListDto) (*d.Data, error) {
+	var data *e.ItemGroup
+	var dataList []e.ItemGroup
+	var metaList *e.MetaDto
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadList",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readList")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if dataList, metaList, err = ReadListData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":            source,
+			"structure":         "list-data",
+			"status":            "fetched",
+			"page_number":       strconv.Itoa(metaList.PageNumber),
+			"page_size":         strconv.Itoa(metaList.PageSize),
+			"record_totalCount": strconv.Itoa(metaList.Count),
+		},
+		Data: e.ToResponseList(dataList),
+	}, nil
+}
+
+func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
+	var data *e.ItemGroup
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadDetail",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readDetail")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if data, err = ReadDetailData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "fetched",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func Update(input e.UpdateDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.ItemGroup
+	var err error
+
+	event := pl.Event{
+		Feature: "Update",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "update")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := UpdateData(input, data, &event, tx); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "updated",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}
+
+func Delete(input e.DeleteDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.ItemGroup
+	var err error
+
+	event := pl.Event{
+		Feature: "Delete",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "delete")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := DeleteData(data, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "deleted",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}

internal/use-case/main-use-case/item-group/helper.go

@@ -0,0 +1,22 @@
+/*
+DESCRIPTION:
+Any functions that are used internally by the use-case
+*/
+package itemgroup
+
+import (
+	e "simrs-vx/internal/domain/main-entities/item-group"
+)
+
+func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.ItemGroup) {
+	var inputSrc *e.CreateDto
+	if inputT, ok := any(input).(*e.CreateDto); ok {
+		inputSrc = inputT
+	} else {
+		inputTemp := any(input).(*e.UpdateDto)
+		inputSrc = &inputTemp.CreateDto
+	}
+
+	data.Code = inputSrc.Code
+	data.Name = inputSrc.Name
+}

internal/use-case/main-use-case/item-group/lib.go

@@ -0,0 +1,149 @@
+package itemgroup
+
+import (
+	e "simrs-vx/internal/domain/main-entities/item-group"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	gh "github.com/karincake/getuk"
+	"gorm.io/gorm"
+)
+
+func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.ItemGroup, error) {
+	pl.SetLogInfo(event, nil, "started", "DBCreate")
+
+	data := e.ItemGroup{}
+	setData(&input, &data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Create(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-create-fail",
+			Detail: "Database insert failed",
+			Raw:    err,
+		}
+		return nil, pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.ItemGroup, *e.MetaDto, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadList")
+	data := []e.ItemGroup{}
+	pagination := gh.Pagination{}
+	count := int64(0)
+	meta := e.MetaDto{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	tx = tx.
+		Model(&e.ItemGroup{}).
+		Scopes(gh.Filter(input)).
+		Count(&count).
+		Scopes(gh.Paginate(input, &pagination)).
+		Order("\"CreatedAt\" DESC")
+
+	if err := tx.Debug().Find(&data).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, &meta, nil
+		}
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-get-fail",
+			Detail: "Database get failed",
+			Raw:    err,
+		}
+		return nil, nil, pl.SetLogError(event, input)
+
+	}
+	meta.Count = int(count)
+	meta.PageNumber = pagination.PageNumber
+	meta.PageSize = pagination.PageSize
+
+	pl.SetLogInfo(event, nil, "complete")
+	return data, &meta, nil
+}
+
+func ReadDetailData(input e.ReadDetailDto, event *pl.Event, dbx ...*gorm.DB) (*e.ItemGroup, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadDetail")
+	data := e.ItemGroup{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.First(&data, input.Id).Error; err != nil {
+		if processedErr := pu.HandleReadError(err, event, source, input.Id, data); processedErr != nil {
+			return nil, processedErr
+		}
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func UpdateData(input e.UpdateDto, data *e.ItemGroup, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBUpdate")
+	setData(&input, data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Save(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-update-fail",
+			Detail: "Database update failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}
+
+func DeleteData(data *e.ItemGroup, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBDelete")
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Delete(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-delete-fail",
+			Detail: "Database delete failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, data)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}

internal/use-case/main-use-case/item-group/middleware-runner.go

@@ -0,0 +1,103 @@
+package itemgroup
+
+import (
+	e "simrs-vx/internal/domain/main-entities/item-group"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+type middlewareRunner struct {
+	Event  *pl.Event
+	Tx     *gorm.DB
+	MwType pu.MWType
+}
+
+// NewMiddlewareExecutor creates a new middleware executor
+func newMiddlewareRunner(event *pl.Event, tx *gorm.DB) *middlewareRunner {
+	return &middlewareRunner{
+		Event: event,
+		Tx:    tx,
+	}
+}
+
+// ExecuteCreateMiddleware executes create middleware
+func (me *middlewareRunner) RunCreateMiddleware(middlewares []createMw, input *e.CreateDto, data *e.ItemGroup) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadListMiddleware(middlewares []readListMw, input *e.ReadListDto, data *e.ItemGroup) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadDetailMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.ItemGroup) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunUpdateMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.ItemGroup) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunDeleteMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.ItemGroup) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) setMwType(mwType pu.MWType) {
+	me.MwType = mwType
+}

internal/use-case/main-use-case/item-group/middleware.go

@@ -0,0 +1,9 @@
+package itemgroup
+
+// example of middleware
+// func init() {
+// 	createPreMw = append(createPreMw,
+// 		CreateMw{Name: "modif-input", Func: pm.ModifInput},
+// 		CreateMw{Name: "check-data", Func: pm.CheckData},
+// 	)
+// }

internal/use-case/main-use-case/item-group/tycovar.go

@@ -0,0 +1,44 @@
+/*
+DESCRIPTION:
+A sample, part of the package that contains type, constants, and/or variables.
+
+In this sample it also provides type and variable regarding the needs of the
+middleware to separate from main use-case which has the basic CRUD
+functionality. The purpose of this is to make the code more maintainable.
+*/
+package itemgroup
+
+import (
+	"gorm.io/gorm"
+
+	e "simrs-vx/internal/domain/main-entities/item-group"
+)
+
+type createMw struct {
+	Name string
+	Func func(input *e.CreateDto, data *e.ItemGroup, tx *gorm.DB) error
+}
+
+type readListMw struct {
+	Name string
+	Func func(input *e.ReadListDto, data *e.ItemGroup, tx *gorm.DB) error
+}
+
+type readDetailMw struct {
+	Name string
+	Func func(input *e.ReadDetailDto, data *e.ItemGroup, tx *gorm.DB) error
+}
+
+type UpdateMw = readDetailMw
+type DeleteMw = readDetailMw
+
+var createPreMw []createMw      // preprocess middleware
+var createPostMw []createMw     // postprocess middleware
+var readListPreMw []readListMw  // ..
+var readListPostMw []readListMw // ..
+var readDetailPreMw []readDetailMw
+var readDetailPostMw []readDetailMw
+var updatePreMw []readDetailMw
+var updatePostMw []readDetailMw
+var deletePreMw []readDetailMw
+var deletePostMw []readDetailMw

internal/use-case/main-use-case/nurse/case.go

@@ -0,0 +1,275 @@
+package nurse
+
+import (
+	e "simrs-vx/internal/domain/main-entities/nurse"
+	"strconv"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	d "github.com/karincake/dodol"
+
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+const source = "nurse"
+
+func Create(input e.CreateDto) (*d.Data, error) {
+	data := e.Nurse{}
+
+	event := pl.Event{
+		Feature: "Create",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "create")
+
+	err := dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunCreateMiddleware(createPreMw, &input, &data); err != nil {
+			return err
+		}
+
+		if resData, err := CreateData(input, &event, tx); err != nil {
+			return err
+		} else {
+			data = *resData
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunCreateMiddleware(createPostMw, &input, &data); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.II{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "created",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func ReadList(input e.ReadListDto) (*d.Data, error) {
+	var data *e.Nurse
+	var dataList []e.Nurse
+	var metaList *e.MetaDto
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadList",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readList")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if dataList, metaList, err = ReadListData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":            source,
+			"structure":         "list-data",
+			"status":            "fetched",
+			"page_number":       strconv.Itoa(metaList.PageNumber),
+			"page_size":         strconv.Itoa(metaList.PageSize),
+			"record_totalCount": strconv.Itoa(metaList.Count),
+		},
+		Data: e.ToResponseList(dataList),
+	}, nil
+}
+
+func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
+	var data *e.Nurse
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadDetail",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readDetail")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if data, err = ReadDetailData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "fetched",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func Update(input e.UpdateDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Nurse
+	var err error
+
+	event := pl.Event{
+		Feature: "Update",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "update")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := UpdateData(input, data, &event, tx); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "updated",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}
+
+func Delete(input e.DeleteDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Nurse
+	var err error
+
+	event := pl.Event{
+		Feature: "Delete",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "delete")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := DeleteData(data, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "deleted",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}

internal/use-case/main-use-case/nurse/helper.go

@@ -0,0 +1,22 @@
+/*
+DESCRIPTION:
+Any functions that are used internally by the use-case
+*/
+package nurse
+
+import (
+	e "simrs-vx/internal/domain/main-entities/nurse"
+)
+
+func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.Nurse) {
+	var inputSrc *e.CreateDto
+	if inputT, ok := any(input).(*e.CreateDto); ok {
+		inputSrc = inputT
+	} else {
+		inputTemp := any(input).(*e.UpdateDto)
+		inputSrc = &inputTemp.CreateDto
+	}
+
+	data.Employee_Id = inputSrc.Employee_Id
+	data.IHS_Number = inputSrc.IHS_Number
+}

internal/use-case/main-use-case/nurse/lib.go

@@ -0,0 +1,149 @@
+package nurse
+
+import (
+	e "simrs-vx/internal/domain/main-entities/nurse"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	gh "github.com/karincake/getuk"
+	"gorm.io/gorm"
+)
+
+func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.Nurse, error) {
+	pl.SetLogInfo(event, nil, "started", "DBCreate")
+
+	data := e.Nurse{}
+	setData(&input, &data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Create(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-create-fail",
+			Detail: "Database insert failed",
+			Raw:    err,
+		}
+		return nil, pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.Nurse, *e.MetaDto, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadList")
+	data := []e.Nurse{}
+	pagination := gh.Pagination{}
+	count := int64(0)
+	meta := e.MetaDto{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	tx = tx.
+		Model(&e.Nurse{}).
+		Scopes(gh.Filter(input)).
+		Count(&count).
+		Scopes(gh.Paginate(input, &pagination)).
+		Order("\"CreatedAt\" DESC")
+
+	if err := tx.Debug().Find(&data).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, &meta, nil
+		}
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-get-fail",
+			Detail: "Database get failed",
+			Raw:    err,
+		}
+		return nil, nil, pl.SetLogError(event, input)
+
+	}
+	meta.Count = int(count)
+	meta.PageNumber = pagination.PageNumber
+	meta.PageSize = pagination.PageSize
+
+	pl.SetLogInfo(event, nil, "complete")
+	return data, &meta, nil
+}
+
+func ReadDetailData(input e.ReadDetailDto, event *pl.Event, dbx ...*gorm.DB) (*e.Nurse, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadDetail")
+	data := e.Nurse{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.First(&data, input.Id).Error; err != nil {
+		if processedErr := pu.HandleReadError(err, event, source, input.Id, data); processedErr != nil {
+			return nil, processedErr
+		}
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func UpdateData(input e.UpdateDto, data *e.Nurse, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBUpdate")
+	setData(&input, data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Save(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-update-fail",
+			Detail: "Database update failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}
+
+func DeleteData(data *e.Nurse, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBDelete")
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Delete(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-delete-fail",
+			Detail: "Database delete failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, data)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}

internal/use-case/main-use-case/nurse/middleware-runner.go

@@ -0,0 +1,103 @@
+package nurse
+
+import (
+	e "simrs-vx/internal/domain/main-entities/nurse"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+type middlewareRunner struct {
+	Event  *pl.Event
+	Tx     *gorm.DB
+	MwType pu.MWType
+}
+
+// NewMiddlewareExecutor creates a new middleware executor
+func newMiddlewareRunner(event *pl.Event, tx *gorm.DB) *middlewareRunner {
+	return &middlewareRunner{
+		Event: event,
+		Tx:    tx,
+	}
+}
+
+// ExecuteCreateMiddleware executes create middleware
+func (me *middlewareRunner) RunCreateMiddleware(middlewares []createMw, input *e.CreateDto, data *e.Nurse) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadListMiddleware(middlewares []readListMw, input *e.ReadListDto, data *e.Nurse) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadDetailMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Nurse) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunUpdateMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Nurse) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunDeleteMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Nurse) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) setMwType(mwType pu.MWType) {
+	me.MwType = mwType
+}

internal/use-case/main-use-case/nurse/middleware.go

@@ -0,0 +1,9 @@
+package nurse
+
+// example of middleware
+// func init() {
+// 	createPreMw = append(createPreMw,
+// 		CreateMw{Name: "modif-input", Func: pm.ModifInput},
+// 		CreateMw{Name: "check-data", Func: pm.CheckData},
+// 	)
+// }

internal/use-case/main-use-case/nurse/tycovar.go

@@ -0,0 +1,44 @@
+/*
+DESCRIPTION:
+A sample, part of the package that contains type, constants, and/or variables.
+
+In this sample it also provides type and variable regarding the needs of the
+middleware to separate from main use-case which has the basic CRUD
+functionality. The purpose of this is to make the code more maintainable.
+*/
+package nurse
+
+import (
+	"gorm.io/gorm"
+
+	e "simrs-vx/internal/domain/main-entities/nurse"
+)
+
+type createMw struct {
+	Name string
+	Func func(input *e.CreateDto, data *e.Nurse, tx *gorm.DB) error
+}
+
+type readListMw struct {
+	Name string
+	Func func(input *e.ReadListDto, data *e.Nurse, tx *gorm.DB) error
+}
+
+type readDetailMw struct {
+	Name string
+	Func func(input *e.ReadDetailDto, data *e.Nurse, tx *gorm.DB) error
+}
+
+type UpdateMw = readDetailMw
+type DeleteMw = readDetailMw
+
+var createPreMw []createMw      // preprocess middleware
+var createPostMw []createMw     // postprocess middleware
+var readListPreMw []readListMw  // ..
+var readListPostMw []readListMw // ..
+var readDetailPreMw []readDetailMw
+var readDetailPostMw []readDetailMw
+var updatePreMw []readDetailMw
+var updatePostMw []readDetailMw
+var deletePreMw []readDetailMw
+var deletePostMw []readDetailMw

internal/use-case/main-use-case/nutritionist/case.go

@@ -0,0 +1,275 @@
+package nutritionist
+
+import (
+	e "simrs-vx/internal/domain/main-entities/nutritionist"
+	"strconv"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	d "github.com/karincake/dodol"
+
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+const source = "nutritionist"
+
+func Create(input e.CreateDto) (*d.Data, error) {
+	data := e.Nutritionist{}
+
+	event := pl.Event{
+		Feature: "Create",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "create")
+
+	err := dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunCreateMiddleware(createPreMw, &input, &data); err != nil {
+			return err
+		}
+
+		if resData, err := CreateData(input, &event, tx); err != nil {
+			return err
+		} else {
+			data = *resData
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunCreateMiddleware(createPostMw, &input, &data); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.II{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "created",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func ReadList(input e.ReadListDto) (*d.Data, error) {
+	var data *e.Nutritionist
+	var dataList []e.Nutritionist
+	var metaList *e.MetaDto
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadList",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readList")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if dataList, metaList, err = ReadListData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":            source,
+			"structure":         "list-data",
+			"status":            "fetched",
+			"page_number":       strconv.Itoa(metaList.PageNumber),
+			"page_size":         strconv.Itoa(metaList.PageSize),
+			"record_totalCount": strconv.Itoa(metaList.Count),
+		},
+		Data: e.ToResponseList(dataList),
+	}, nil
+}
+
+func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
+	var data *e.Nutritionist
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadDetail",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readDetail")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if data, err = ReadDetailData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "fetched",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func Update(input e.UpdateDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Nutritionist
+	var err error
+
+	event := pl.Event{
+		Feature: "Update",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "update")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := UpdateData(input, data, &event, tx); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "updated",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}
+
+func Delete(input e.DeleteDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Nutritionist
+	var err error
+
+	event := pl.Event{
+		Feature: "Delete",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "delete")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := DeleteData(data, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "deleted",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}

internal/use-case/main-use-case/nutritionist/helper.go

@@ -0,0 +1,22 @@
+/*
+DESCRIPTION:
+Any functions that are used internally by the use-case
+*/
+package nutritionist
+
+import (
+	e "simrs-vx/internal/domain/main-entities/nutritionist"
+)
+
+func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.Nutritionist) {
+	var inputSrc *e.CreateDto
+	if inputT, ok := any(input).(*e.CreateDto); ok {
+		inputSrc = inputT
+	} else {
+		inputTemp := any(input).(*e.UpdateDto)
+		inputSrc = &inputTemp.CreateDto
+	}
+
+	data.Employee_Id = inputSrc.Employee_Id
+	data.IHS_Number = inputSrc.IHS_Number
+}

internal/use-case/main-use-case/nutritionist/lib.go

@@ -0,0 +1,149 @@
+package nutritionist
+
+import (
+	e "simrs-vx/internal/domain/main-entities/nutritionist"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	gh "github.com/karincake/getuk"
+	"gorm.io/gorm"
+)
+
+func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.Nutritionist, error) {
+	pl.SetLogInfo(event, nil, "started", "DBCreate")
+
+	data := e.Nutritionist{}
+	setData(&input, &data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Create(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-create-fail",
+			Detail: "Database insert failed",
+			Raw:    err,
+		}
+		return nil, pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.Nutritionist, *e.MetaDto, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadList")
+	data := []e.Nutritionist{}
+	pagination := gh.Pagination{}
+	count := int64(0)
+	meta := e.MetaDto{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	tx = tx.
+		Model(&e.Nutritionist{}).
+		Scopes(gh.Filter(input)).
+		Count(&count).
+		Scopes(gh.Paginate(input, &pagination)).
+		Order("\"CreatedAt\" DESC")
+
+	if err := tx.Debug().Find(&data).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, &meta, nil
+		}
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-get-fail",
+			Detail: "Database get failed",
+			Raw:    err,
+		}
+		return nil, nil, pl.SetLogError(event, input)
+
+	}
+	meta.Count = int(count)
+	meta.PageNumber = pagination.PageNumber
+	meta.PageSize = pagination.PageSize
+
+	pl.SetLogInfo(event, nil, "complete")
+	return data, &meta, nil
+}
+
+func ReadDetailData(input e.ReadDetailDto, event *pl.Event, dbx ...*gorm.DB) (*e.Nutritionist, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadDetail")
+	data := e.Nutritionist{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.First(&data, input.Id).Error; err != nil {
+		if processedErr := pu.HandleReadError(err, event, source, input.Id, data); processedErr != nil {
+			return nil, processedErr
+		}
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func UpdateData(input e.UpdateDto, data *e.Nutritionist, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBUpdate")
+	setData(&input, data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Save(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-update-fail",
+			Detail: "Database update failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}
+
+func DeleteData(data *e.Nutritionist, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBDelete")
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Delete(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-delete-fail",
+			Detail: "Database delete failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, data)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}

internal/use-case/main-use-case/nutritionist/middleware-runner.go

@@ -0,0 +1,103 @@
+package nutritionist
+
+import (
+	e "simrs-vx/internal/domain/main-entities/nutritionist"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+type middlewareRunner struct {
+	Event  *pl.Event
+	Tx     *gorm.DB
+	MwType pu.MWType
+}
+
+// NewMiddlewareExecutor creates a new middleware executor
+func newMiddlewareRunner(event *pl.Event, tx *gorm.DB) *middlewareRunner {
+	return &middlewareRunner{
+		Event: event,
+		Tx:    tx,
+	}
+}
+
+// ExecuteCreateMiddleware executes create middleware
+func (me *middlewareRunner) RunCreateMiddleware(middlewares []createMw, input *e.CreateDto, data *e.Nutritionist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadListMiddleware(middlewares []readListMw, input *e.ReadListDto, data *e.Nutritionist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadDetailMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Nutritionist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunUpdateMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Nutritionist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunDeleteMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Nutritionist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) setMwType(mwType pu.MWType) {
+	me.MwType = mwType
+}

internal/use-case/main-use-case/nutritionist/middleware.go

@@ -0,0 +1,9 @@
+package nutritionist
+
+// example of middleware
+// func init() {
+// 	createPreMw = append(createPreMw,
+// 		CreateMw{Name: "modif-input", Func: pm.ModifInput},
+// 		CreateMw{Name: "check-data", Func: pm.CheckData},
+// 	)
+// }

internal/use-case/main-use-case/nutritionist/tycovar.go

@@ -0,0 +1,44 @@
+/*
+DESCRIPTION:
+A sample, part of the package that contains type, constants, and/or variables.
+
+In this sample it also provides type and variable regarding the needs of the
+middleware to separate from main use-case which has the basic CRUD
+functionality. The purpose of this is to make the code more maintainable.
+*/
+package nutritionist
+
+import (
+	"gorm.io/gorm"
+
+	e "simrs-vx/internal/domain/main-entities/nutritionist"
+)
+
+type createMw struct {
+	Name string
+	Func func(input *e.CreateDto, data *e.Nutritionist, tx *gorm.DB) error
+}
+
+type readListMw struct {
+	Name string
+	Func func(input *e.ReadListDto, data *e.Nutritionist, tx *gorm.DB) error
+}
+
+type readDetailMw struct {
+	Name string
+	Func func(input *e.ReadDetailDto, data *e.Nutritionist, tx *gorm.DB) error
+}
+
+type UpdateMw = readDetailMw
+type DeleteMw = readDetailMw
+
+var createPreMw []createMw      // preprocess middleware
+var createPostMw []createMw     // postprocess middleware
+var readListPreMw []readListMw  // ..
+var readListPostMw []readListMw // ..
+var readDetailPreMw []readDetailMw
+var readDetailPostMw []readDetailMw
+var updatePreMw []readDetailMw
+var updatePostMw []readDetailMw
+var deletePreMw []readDetailMw
+var deletePostMw []readDetailMw

internal/use-case/main-use-case/pharmacist/case.go

@@ -0,0 +1,275 @@
+package pharmacist
+
+import (
+	e "simrs-vx/internal/domain/main-entities/pharmacist"
+	"strconv"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	d "github.com/karincake/dodol"
+
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+const source = "pharmacist"
+
+func Create(input e.CreateDto) (*d.Data, error) {
+	data := e.Pharmacist{}
+
+	event := pl.Event{
+		Feature: "Create",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "create")
+
+	err := dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunCreateMiddleware(createPreMw, &input, &data); err != nil {
+			return err
+		}
+
+		if resData, err := CreateData(input, &event, tx); err != nil {
+			return err
+		} else {
+			data = *resData
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunCreateMiddleware(createPostMw, &input, &data); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.II{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "created",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func ReadList(input e.ReadListDto) (*d.Data, error) {
+	var data *e.Pharmacist
+	var dataList []e.Pharmacist
+	var metaList *e.MetaDto
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadList",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readList")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if dataList, metaList, err = ReadListData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":            source,
+			"structure":         "list-data",
+			"status":            "fetched",
+			"page_number":       strconv.Itoa(metaList.PageNumber),
+			"page_size":         strconv.Itoa(metaList.PageSize),
+			"record_totalCount": strconv.Itoa(metaList.Count),
+		},
+		Data: e.ToResponseList(dataList),
+	}, nil
+}
+
+func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
+	var data *e.Pharmacist
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadDetail",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readDetail")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if data, err = ReadDetailData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "fetched",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func Update(input e.UpdateDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Pharmacist
+	var err error
+
+	event := pl.Event{
+		Feature: "Update",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "update")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := UpdateData(input, data, &event, tx); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "updated",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}
+
+func Delete(input e.DeleteDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: uint16(input.Id)}
+	var data *e.Pharmacist
+	var err error
+
+	event := pl.Event{
+		Feature: "Delete",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "delete")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := DeleteData(data, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "deleted",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}

internal/use-case/main-use-case/pharmacist/helper.go

@@ -0,0 +1,22 @@
+/*
+DESCRIPTION:
+Any functions that are used internally by the use-case
+*/
+package pharmacist
+
+import (
+	e "simrs-vx/internal/domain/main-entities/pharmacist"
+)
+
+func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.Pharmacist) {
+	var inputSrc *e.CreateDto
+	if inputT, ok := any(input).(*e.CreateDto); ok {
+		inputSrc = inputT
+	} else {
+		inputTemp := any(input).(*e.UpdateDto)
+		inputSrc = &inputTemp.CreateDto
+	}
+
+	data.Employee_Id = inputSrc.Employee_Id
+	data.IHS_Number = inputSrc.IHS_Number
+}

internal/use-case/main-use-case/pharmacist/lib.go

@@ -0,0 +1,149 @@
+package pharmacist
+
+import (
+	e "simrs-vx/internal/domain/main-entities/pharmacist"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	gh "github.com/karincake/getuk"
+	"gorm.io/gorm"
+)
+
+func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.Pharmacist, error) {
+	pl.SetLogInfo(event, nil, "started", "DBCreate")
+
+	data := e.Pharmacist{}
+	setData(&input, &data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Create(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-create-fail",
+			Detail: "Database insert failed",
+			Raw:    err,
+		}
+		return nil, pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.Pharmacist, *e.MetaDto, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadList")
+	data := []e.Pharmacist{}
+	pagination := gh.Pagination{}
+	count := int64(0)
+	meta := e.MetaDto{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	tx = tx.
+		Model(&e.Pharmacist{}).
+		Scopes(gh.Filter(input)).
+		Count(&count).
+		Scopes(gh.Paginate(input, &pagination)).
+		Order("\"CreatedAt\" DESC")
+
+	if err := tx.Debug().Find(&data).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, &meta, nil
+		}
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-get-fail",
+			Detail: "Database get failed",
+			Raw:    err,
+		}
+		return nil, nil, pl.SetLogError(event, input)
+
+	}
+	meta.Count = int(count)
+	meta.PageNumber = pagination.PageNumber
+	meta.PageSize = pagination.PageSize
+
+	pl.SetLogInfo(event, nil, "complete")
+	return data, &meta, nil
+}
+
+func ReadDetailData(input e.ReadDetailDto, event *pl.Event, dbx ...*gorm.DB) (*e.Pharmacist, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadDetail")
+	data := e.Pharmacist{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.First(&data, input.Id).Error; err != nil {
+		if processedErr := pu.HandleReadError(err, event, source, input.Id, data); processedErr != nil {
+			return nil, processedErr
+		}
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func UpdateData(input e.UpdateDto, data *e.Pharmacist, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBUpdate")
+	setData(&input, data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Save(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-update-fail",
+			Detail: "Database update failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}
+
+func DeleteData(data *e.Pharmacist, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBDelete")
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Delete(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-delete-fail",
+			Detail: "Database delete failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, data)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}

internal/use-case/main-use-case/pharmacist/middleware-runner.go

@@ -0,0 +1,103 @@
+package pharmacist
+
+import (
+	e "simrs-vx/internal/domain/main-entities/pharmacist"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+type middlewareRunner struct {
+	Event  *pl.Event
+	Tx     *gorm.DB
+	MwType pu.MWType
+}
+
+// NewMiddlewareExecutor creates a new middleware executor
+func newMiddlewareRunner(event *pl.Event, tx *gorm.DB) *middlewareRunner {
+	return &middlewareRunner{
+		Event: event,
+		Tx:    tx,
+	}
+}
+
+// ExecuteCreateMiddleware executes create middleware
+func (me *middlewareRunner) RunCreateMiddleware(middlewares []createMw, input *e.CreateDto, data *e.Pharmacist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadListMiddleware(middlewares []readListMw, input *e.ReadListDto, data *e.Pharmacist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadDetailMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Pharmacist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunUpdateMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Pharmacist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunDeleteMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.Pharmacist) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) setMwType(mwType pu.MWType) {
+	me.MwType = mwType
+}

internal/use-case/main-use-case/pharmacist/middleware.go

@@ -0,0 +1,9 @@
+package pharmacist
+
+// example of middleware
+// func init() {
+// 	createPreMw = append(createPreMw,
+// 		CreateMw{Name: "modif-input", Func: pm.ModifInput},
+// 		CreateMw{Name: "check-data", Func: pm.CheckData},
+// 	)
+// }

internal/use-case/main-use-case/pharmacist/tycovar.go

@@ -0,0 +1,44 @@
+/*
+DESCRIPTION:
+A sample, part of the package that contains type, constants, and/or variables.
+
+In this sample it also provides type and variable regarding the needs of the
+middleware to separate from main use-case which has the basic CRUD
+functionality. The purpose of this is to make the code more maintainable.
+*/
+package pharmacist
+
+import (
+	"gorm.io/gorm"
+
+	e "simrs-vx/internal/domain/main-entities/pharmacist"
+)
+
+type createMw struct {
+	Name string
+	Func func(input *e.CreateDto, data *e.Pharmacist, tx *gorm.DB) error
+}
+
+type readListMw struct {
+	Name string
+	Func func(input *e.ReadListDto, data *e.Pharmacist, tx *gorm.DB) error
+}
+
+type readDetailMw struct {
+	Name string
+	Func func(input *e.ReadDetailDto, data *e.Pharmacist, tx *gorm.DB) error
+}
+
+type UpdateMw = readDetailMw
+type DeleteMw = readDetailMw
+
+var createPreMw []createMw      // preprocess middleware
+var createPostMw []createMw     // postprocess middleware
+var readListPreMw []readListMw  // ..
+var readListPostMw []readListMw // ..
+var readDetailPreMw []readDetailMw
+var readDetailPostMw []readDetailMw
+var updatePreMw []readDetailMw
+var updatePostMw []readDetailMw
+var deletePreMw []readDetailMw
+var deletePostMw []readDetailMw

internal/use-case/main-use-case/practice-schedule/case.go

@@ -0,0 +1,275 @@
+package practiceschedule
+
+import (
+	e "simrs-vx/internal/domain/main-entities/practice-schedule"
+	"strconv"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	d "github.com/karincake/dodol"
+
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+const source = "practice-schedule"
+
+func Create(input e.CreateDto) (*d.Data, error) {
+	data := e.PracticeSchedule{}
+
+	event := pl.Event{
+		Feature: "Create",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "create")
+
+	err := dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunCreateMiddleware(createPreMw, &input, &data); err != nil {
+			return err
+		}
+
+		if resData, err := CreateData(input, &event, tx); err != nil {
+			return err
+		} else {
+			data = *resData
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunCreateMiddleware(createPostMw, &input, &data); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.II{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "created",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func ReadList(input e.ReadListDto) (*d.Data, error) {
+	var data *e.PracticeSchedule
+	var dataList []e.PracticeSchedule
+	var metaList *e.MetaDto
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadList",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readList")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if dataList, metaList, err = ReadListData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadListMiddleware(readListPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":            source,
+			"structure":         "list-data",
+			"status":            "fetched",
+			"page_number":       strconv.Itoa(metaList.PageNumber),
+			"page_size":         strconv.Itoa(metaList.PageSize),
+			"record_totalCount": strconv.Itoa(metaList.Count),
+		},
+		Data: e.ToResponseList(dataList),
+	}, nil
+}
+
+func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
+	var data *e.PracticeSchedule
+	var err error
+
+	event := pl.Event{
+		Feature: "ReadDetail",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "readDetail")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPreMw, &input, data); err != nil {
+			return err
+		}
+
+		if data, err = ReadDetailData(input, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunReadDetailMiddleware(readDetailPostMw, &input, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "fetched",
+		},
+		Data: data.ToResponse(),
+	}, nil
+}
+
+func Update(input e.UpdateDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: input.Id}
+	var data *e.PracticeSchedule
+	var err error
+
+	event := pl.Event{
+		Feature: "Update",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "update")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := UpdateData(input, data, &event, tx); err != nil {
+			return err
+		}
+
+		pl.SetLogInfo(&event, nil, "complete")
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunUpdateMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "updated",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}
+
+func Delete(input e.DeleteDto) (*d.Data, error) {
+	rdDto := e.ReadDetailDto{Id: input.Id}
+	var data *e.PracticeSchedule
+	var err error
+
+	event := pl.Event{
+		Feature: "Delete",
+		Source:  source,
+	}
+
+	// Start log
+	pl.SetLogInfo(&event, input, "started", "delete")
+
+	err = dg.I.Transaction(func(tx *gorm.DB) error {
+		pl.SetLogInfo(&event, rdDto, "started", "DBReadDetail")
+		if data, err = ReadDetailData(rdDto, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner := newMiddlewareRunner(&event, tx)
+		mwRunner.setMwType(pu.MWTPre)
+		// Run pre-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPreMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		if err := DeleteData(data, &event, tx); err != nil {
+			return err
+		}
+
+		mwRunner.setMwType(pu.MWTPost)
+		// Run post-middleware
+		if err := mwRunner.RunDeleteMiddleware(readDetailPostMw, &rdDto, data); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &d.Data{
+		Meta: d.IS{
+			"source":    source,
+			"structure": "single-data",
+			"status":    "deleted",
+		},
+		Data: data.ToResponse(),
+	}, nil
+
+}

internal/use-case/main-use-case/practice-schedule/helper.go

@@ -0,0 +1,25 @@
+/*
+DESCRIPTION:
+Any functions that are used internally by the use-case
+*/
+package practiceschedule
+
+import (
+	e "simrs-vx/internal/domain/main-entities/practice-schedule"
+)
+
+func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.PracticeSchedule) {
+	var inputSrc *e.CreateDto
+	if inputT, ok := any(input).(*e.CreateDto); ok {
+		inputSrc = inputT
+	} else {
+		inputTemp := any(input).(*e.UpdateDto)
+		inputSrc = &inputTemp.CreateDto
+	}
+
+	data.Doctor_Id = inputSrc.Doctor_Id
+	data.Unit_Code = inputSrc.Unit_Code
+	data.Day_Code = inputSrc.Day_Code
+	data.StartTime = inputSrc.StartTime
+	data.EndTime = inputSrc.EndTime
+}

internal/use-case/main-use-case/practice-schedule/lib.go

@@ -0,0 +1,149 @@
+package practiceschedule
+
+import (
+	e "simrs-vx/internal/domain/main-entities/practice-schedule"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	dg "github.com/karincake/apem/db-gorm-pg"
+	gh "github.com/karincake/getuk"
+	"gorm.io/gorm"
+)
+
+func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.PracticeSchedule, error) {
+	pl.SetLogInfo(event, nil, "started", "DBCreate")
+
+	data := e.PracticeSchedule{}
+	setData(&input, &data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Create(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-create-fail",
+			Detail: "Database insert failed",
+			Raw:    err,
+		}
+		return nil, pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.PracticeSchedule, *e.MetaDto, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadList")
+	data := []e.PracticeSchedule{}
+	pagination := gh.Pagination{}
+	count := int64(0)
+	meta := e.MetaDto{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	tx = tx.
+		Model(&e.PracticeSchedule{}).
+		Scopes(gh.Filter(input)).
+		Count(&count).
+		Scopes(gh.Paginate(input, &pagination)).
+		Order("\"CreatedAt\" DESC")
+
+	if err := tx.Debug().Find(&data).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, &meta, nil
+		}
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-get-fail",
+			Detail: "Database get failed",
+			Raw:    err,
+		}
+		return nil, nil, pl.SetLogError(event, input)
+
+	}
+	meta.Count = int(count)
+	meta.PageNumber = pagination.PageNumber
+	meta.PageSize = pagination.PageSize
+
+	pl.SetLogInfo(event, nil, "complete")
+	return data, &meta, nil
+}
+
+func ReadDetailData(input e.ReadDetailDto, event *pl.Event, dbx ...*gorm.DB) (*e.PracticeSchedule, error) {
+	pl.SetLogInfo(event, input, "started", "DBReadDetail")
+	data := e.PracticeSchedule{}
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.First(&data, input.Id).Error; err != nil {
+		if processedErr := pu.HandleReadError(err, event, source, input.Id, data); processedErr != nil {
+			return nil, processedErr
+		}
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return &data, nil
+}
+
+func UpdateData(input e.UpdateDto, data *e.PracticeSchedule, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBUpdate")
+	setData(&input, data)
+
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Save(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-update-fail",
+			Detail: "Database update failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, input)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}
+
+func DeleteData(data *e.PracticeSchedule, event *pl.Event, dbx ...*gorm.DB) error {
+	pl.SetLogInfo(event, data, "started", "DBDelete")
+	var tx *gorm.DB
+	if len(dbx) > 0 {
+		tx = dbx[0]
+	} else {
+		tx = dg.I
+	}
+
+	if err := tx.Delete(&data).Error; err != nil {
+		event.Status = "failed"
+		event.ErrInfo = pl.ErrorInfo{
+			Code:   "data-delete-fail",
+			Detail: "Database delete failed",
+			Raw:    err,
+		}
+		return pl.SetLogError(event, data)
+	}
+
+	pl.SetLogInfo(event, nil, "complete")
+	return nil
+}

internal/use-case/main-use-case/practice-schedule/middleware-runner.go

@@ -0,0 +1,103 @@
+package practiceschedule
+
+import (
+	e "simrs-vx/internal/domain/main-entities/practice-schedule"
+	pl "simrs-vx/pkg/logger"
+	pu "simrs-vx/pkg/use-case-helper"
+
+	"gorm.io/gorm"
+)
+
+type middlewareRunner struct {
+	Event  *pl.Event
+	Tx     *gorm.DB
+	MwType pu.MWType
+}
+
+// NewMiddlewareExecutor creates a new middleware executor
+func newMiddlewareRunner(event *pl.Event, tx *gorm.DB) *middlewareRunner {
+	return &middlewareRunner{
+		Event: event,
+		Tx:    tx,
+	}
+}
+
+// ExecuteCreateMiddleware executes create middleware
+func (me *middlewareRunner) RunCreateMiddleware(middlewares []createMw, input *e.CreateDto, data *e.PracticeSchedule) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadListMiddleware(middlewares []readListMw, input *e.ReadListDto, data *e.PracticeSchedule) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunReadDetailMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.PracticeSchedule) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunUpdateMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.PracticeSchedule) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) RunDeleteMiddleware(middlewares []readDetailMw, input *e.ReadDetailDto, data *e.PracticeSchedule) error {
+	for _, middleware := range middlewares {
+		logData := pu.GetLogData(input, data)
+
+		pl.SetLogInfo(me.Event, logData, "started", middleware.Name)
+
+		if err := middleware.Func(input, data, me.Tx); err != nil {
+			return pu.HandleMiddlewareError(me.Event, string(me.MwType), middleware.Name, logData, err)
+		}
+
+		pl.SetLogInfo(me.Event, nil, "complete")
+	}
+	return nil
+}
+
+func (me *middlewareRunner) setMwType(mwType pu.MWType) {
+	me.MwType = mwType
+}

internal/use-case/main-use-case/practice-schedule/middleware.go

@@ -0,0 +1,9 @@
+package practiceschedule
+
+// example of middleware
+// func init() {
+// 	createPreMw = append(createPreMw,
+// 		CreateMw{Name: "modif-input", Func: pm.ModifInput},
+// 		CreateMw{Name: "check-data", Func: pm.CheckData},
+// 	)
+// }

internal/use-case/main-use-case/practice-schedule/tycovar.go

@@ -0,0 +1,44 @@
+/*
+DESCRIPTION:
+A sample, part of the package that contains type, constants, and/or variables.
+
+In this sample it also provides type and variable regarding the needs of the
+middleware to separate from main use-case which has the basic CRUD
+functionality. The purpose of this is to make the code more maintainable.
+*/
+package practiceschedule
+
+import (
+	"gorm.io/gorm"
+
+	e "simrs-vx/internal/domain/main-entities/practice-schedule"
+)
+
+type createMw struct {
+	Name string
+	Func func(input *e.CreateDto, data *e.PracticeSchedule, tx *gorm.DB) error
+}
+
+type readListMw struct {
+	Name string
+	Func func(input *e.ReadListDto, data *e.PracticeSchedule, tx *gorm.DB) error
+}
+
+type readDetailMw struct {
+	Name string
+	Func func(input *e.ReadDetailDto, data *e.PracticeSchedule, tx *gorm.DB) error
+}
+
+type UpdateMw = readDetailMw
+type DeleteMw = readDetailMw
+
+var createPreMw []createMw      // preprocess middleware
+var createPostMw []createMw     // postprocess middleware
+var readListPreMw []readListMw  // ..
+var readListPostMw []readListMw // ..
+var readDetailPreMw []readDetailMw
+var readDetailPostMw []readDetailMw
+var updatePreMw []readDetailMw
+var updatePostMw []readDetailMw
+var deletePreMw []readDetailMw
+var deletePostMw []readDetailMw