package unit_position

import (
	ee "simrs-vx/internal/domain/main-entities/employee"
	eu "simrs-vx/internal/domain/main-entities/unit"
	e "simrs-vx/internal/domain/main-entities/unit-position"
	"strconv"

	ue "simrs-vx/internal/use-case/main-use-case/employee"
	uu "simrs-vx/internal/use-case/main-use-case/unit"

	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 = "unit-position"

func Create(input e.CreateDto) (*d.Data, error) {
	data := e.UnitPosition{}

	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 err := validateForeignKey(input); 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.UnitPosition
	var dataList []e.UnitPosition
	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),
			"record_currentCount": strconv.Itoa(len(dataList)),
		},
		Data: e.ToResponseList(dataList),
	}, nil
}

func ReadDetail(input e.ReadDetailDto) (*d.Data, error) {
	var data *e.UnitPosition
	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.UnitPosition
	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 := validateForeignKey(input.CreateDto); 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.UnitPosition
	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

}

func validateForeignKey(input e.CreateDto) error {
	// validate installation_id
	if _, err := uu.ReadDetail(eu.ReadDetailDto{Id: *input.Unit_Id}); err != nil {
		return err
	}

	// validate employee_Id
	if _, err := ue.ReadDetail(ee.ReadDetailDto{Id: uint16(*input.Employee_Id)}); err != nil {
		return err
	}
	return nil
}