package user

import (
	"fmt"
	e "simrs-vx/internal/domain/main-entities/user"
	"strconv"

	dg "github.com/karincake/apem/db-gorm-pg"
	d "github.com/karincake/dodol"

	pl "simrs-vx/pkg/logger"

	"gorm.io/gorm"
)

const source = "user"

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

	setCreate(input, &data)

	event := pl.Event{
		Feature: "Create",
		Source:  source,
	}

	// Start log
	event.Action = "Create"
	event.Status = "started"
	pl.SetLogInfo(event, input)

	err := dg.I.Transaction(func(tx *gorm.DB) error {
		for i := range createPreMw {
			mwName := fmt.Sprintf("createPreMw[%d]", i)

			event.Action = mwName
			event.Status = "started"
			pl.SetLogInfo(event, data)

			if err := createPreMw[i](&input, &data, tx); err != nil {
				event.Status = "failed"
				event.ErrInfo = pl.ErrorInfo{
					Code:   "MW_PRE_FAILED", // TODO: add to lang json
					Detail: fmt.Sprintf("Pre-middleware %s failed", mwName),
					Raw:    err,
				}
				return pl.SetLogError(event, data)
			}

			event.Status = "completed"
			pl.SetLogInfo(event, nil)
		}

		event.Action = "DBCreate"
		event.Status = "started"
		pl.SetLogInfo(event, data)
		_, err := CreateData(&data, tx)
		if err != nil {
			event.Status = "failed"
			event.ErrInfo = pl.ErrorInfo{
				Code:   "data-create-fail",
				Detail: "Database insert failed",
				Raw:    err,
			}
			return pl.SetLogError(event, data)
		}

		event.Status = "completed"
		pl.SetLogInfo(event, nil)

		for i := range createPostMw {
			mwName := fmt.Sprintf("createPostMw[%d]", i)

			event.Action = mwName
			event.Status = "started"
			pl.SetLogInfo(event, input)
			if err := createPostMw[i](&input, &data, tx); err != nil {
				event.Status = "failed"
				event.ErrInfo = pl.ErrorInfo{
					Code:   "MW_POST_FAILED", // TODO: add to lang json
					Detail: fmt.Sprintf("Post-middleware %s failed", mwName),
					Raw:    err,
				}
				return pl.SetLogError(event, data)
			}
		}

		event.Status = "completed"
		pl.SetLogInfo(event, nil)

		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.User
	var dataList []e.User
	var metaList *e.MetaDto
	var err error
	err = dg.I.Transaction(func(tx *gorm.DB) error {
		for i := range readListPreMw {
			if err := readListPreMw[i](&input, data, tx); err != nil {
				return nil
			}
		}

		dataList, metaList, err = ReadListData(input, tx)
		if err != nil {
			return err
		}

		for i := range readListPostMw {
			if err := readListPostMw[i](&input, data, tx); err != nil {
				return nil
			}
		}

		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.User
	var err error
	err = dg.I.Transaction(func(tx *gorm.DB) error {
		for i := range readDetailPreMw {
			if err := readDetailPreMw[i](&input, data, tx); err != nil {
				return nil
			}
		}
		data, err = ReadDetailData(input, tx)
		if err != nil {
			return err
		}
		for i := range readDetailPostMw {
			if err := readDetailPostMw[i](&input, data, tx); err != nil {
				return nil
			}
		}
		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.User
	var err error
	err = dg.I.Transaction(func(tx *gorm.DB) error {
		data, err = ReadDetailData(rdDto, tx)
		if err != nil {
			return nil
		}

		err = setUpdate(input, data)
		if err != nil {
			return err
		}
		for i := range updatePreMw {
			if err := updatePreMw[i](&rdDto, data, tx); err != nil {
				return nil
			}
		}
		if err := UpdateData(*data, tx); err != nil {
			return nil
		}
		for i := range updatePostMw {
			if err := updatePostMw[i](&rdDto, data, tx); err != nil {
				return nil
			}
		}
		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.User
	var err error
	err = dg.I.Transaction(func(tx *gorm.DB) error {
		data, err = ReadDetailData(rdDto, tx)
		if err != nil {
			return nil
		}
		for i := range deletePreMw {
			if err := deletePreMw[i](&rdDto, data, tx); err != nil {
				return nil
			}
		}
		if err := DeleteData(data, tx); err != nil {
			return nil
		}
		for i := range deletePostMw {
			if err := deletePostMw[i](&rdDto, data, tx); err != nil {
				return nil
			}
		}
		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

}