package encounter

import (
	// std
	"errors"
	// external
	dg "github.com/karincake/apem/db-gorm-pg"
	gh "github.com/karincake/getuk"
	"gorm.io/gorm"

	// pkg
	plh "simrs-vx/pkg/lib-helper"
	pl "simrs-vx/pkg/logger"
	pu "simrs-vx/pkg/use-case-helper"

	// internal
	eaeh "simrs-vx/internal/domain/main-entities/adm-employee-hist"
	e "simrs-vx/internal/domain/main-entities/encounter"
	erdh "simrs-vx/internal/domain/main-entities/responsible-doctor-hist"
)

func CreateData(input e.CreateDto, event *pl.Event, dbx ...*gorm.DB) (*e.Encounter, error) {
	pl.SetLogInfo(event, nil, "started", "DBCreate")

	data := e.Encounter{}
	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 {
		return nil, plh.HandleCreateError(input, event, err)
	}

	pl.SetLogInfo(event, nil, "complete")
	return &data, nil
}

func ReadListData(input e.ReadListDto, event *pl.Event, dbx ...*gorm.DB) ([]e.Encounter, *e.MetaDto, error) {
	if input.AuthInfo.User_Id == 0 {
		return nil, nil, plh.HandleListError(input, event, errors.New("user_id is required"))
	}

	pl.SetLogInfo(event, input, "started", "DBReadList")
	data := []e.Encounter{}
	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.Encounter{})

	if input.AuthInfo.Doctor_Id != nil {
		tx.Where("\"Responsible_Doctor_Id\" = ?", *input.AuthInfo.Doctor_Id)
	}

	tx.Scopes(gh.Preload(input.Includes)).
		Scopes(gh.Filter(input.FilterDto)).
		Count(&count).
		Scopes(gh.Paginate(input, &pagination)).
		Order("\"CreatedAt\" DESC")

	if err := tx.Find(&data).Error; err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, &meta, nil
		}
		return nil, nil, plh.HandleListError(input, event, err)
	}

	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.Encounter, error) {
	pl.SetLogInfo(event, input, "started", "DBReadDetail")
	data := e.Encounter{}

	var tx *gorm.DB
	if len(dbx) > 0 {
		tx = dbx[0]
	} else {
		tx = dg.I
	}

	if err := tx.Scopes(gh.Preload(input.Includes)).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.Encounter, event *pl.Event, dbx ...*gorm.DB) error {
	pl.SetLogInfo(event, data, "started", "DBUpdate")
	setDataUpdate(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.Encounter, 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
}

func updateDischargeData(input e.DischargeDto, data *e.Encounter, event *pl.Event, dbx ...*gorm.DB) error {
	pl.SetLogInfo(event, data, "started", "DBUpdateDischarge")
	setDataDischarge(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 IsDone(encounter_id uint, event *pl.Event, dbx ...*gorm.DB) bool {
	pl.SetLogInfo(event, nil, "started", "DBIsDone")
	var tx *gorm.DB
	if len(dbx) > 0 {
		tx = dbx[0]
	} else {
		tx = dg.I
	}

	var data e.Encounter
	if err := tx.Where("\"Id\" = ?", encounter_id).First(&data).Error; err != nil {
		event.Status = "failed"
		event.ErrInfo = pl.ErrorInfo{
			Code:   "data-get-fail",
			Detail: "Database get failed",
			Raw:    err,
		}
		return false
	}

	pl.SetLogInfo(event, nil, "complete")
	return data.IsDone()
}

func UpdateStatusData(input e.UpdateStatusDto, data *e.Encounter, event *pl.Event, dbx ...*gorm.DB) error {
	pl.SetLogInfo(event, data, "started", "DBUpdate")
	setDataUpdateStatus(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 updateCheckInData(input e.CheckinDto, data *e.Encounter, event *pl.Event, dbx ...*gorm.DB) error {
	pl.SetLogInfo(event, data, "started", "DBUpdate")
	setDataCheckIn(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 updateLatestResponsibleDoctorHist(input e.CheckinDto, event *pl.Event, dbx ...*gorm.DB) error {
	pl.SetLogInfo(event, "started", "DBUpdate")

	var tx *gorm.DB
	if len(dbx) > 0 {
		tx = dbx[0]
	} else {
		tx = dg.I
	}

	subQuery := tx.
		Select("\"Id\"").
		Model(&erdh.ResponsibleDoctorHist{}).
		Where("\"Encounter_Id\" = ?", input.Id).
		Order("\"CreatedAt\" DESC").
		Limit(1)

	result := tx.
		Model(&erdh.ResponsibleDoctorHist{}).
		Where("\"Id\" = (?)", subQuery).
		Update("\"FinishedAt\"", input.StartedAt)

	if result.Error != nil {
		event.Status = "failed"
		event.ErrInfo = pl.ErrorInfo{
			Code:   "data-update-fail",
			Detail: "Database update failed",
			Raw:    result.Error,
		}
		return pl.SetLogError(event, input)
	}

	if result.RowsAffected == 0 {
		pl.SetLogInfo(event, input, "no previous data found to update")
		return nil
	}

	pl.SetLogInfo(event, nil, "complete")
	return nil
}

func updateLatestAdmEmployeeHist(input e.CheckinDto, event *pl.Event, dbx ...*gorm.DB) error {
	pl.SetLogInfo(event, "started", "DBUpdate")

	var tx *gorm.DB
	if len(dbx) > 0 {
		tx = dbx[0]
	} else {
		tx = dg.I
	}

	subQuery := tx.
		Select("\"Id\"").
		Model(&eaeh.AdmEmployeeHist{}).
		Where("\"Encounter_Id\" = ?", input.Id).
		Order("\"CreatedAt\" DESC").
		Limit(1)

	result := tx.
		Model(&eaeh.AdmEmployeeHist{}).
		Where("\"Id\" = (?)", subQuery).
		Update("\"FinishedAt\"", input.StartedAt)

	if result.Error != nil {
		event.Status = "failed"
		event.ErrInfo = pl.ErrorInfo{
			Code:   "data-update-fail",
			Detail: "Database update failed",
			Raw:    result.Error,
		}
		return pl.SetLogError(event, input)
	}

	if result.RowsAffected == 0 {
		pl.SetLogInfo(event, input, "no previous data found to update")
		return nil
	}

	pl.SetLogInfo(event, nil, "complete")
	return nil
}