package service

import (
	"errors"
	"jaecoo-be/app/module/promotions/mapper"
	"jaecoo-be/app/module/promotions/repository"
	"jaecoo-be/app/module/promotions/request"
	"jaecoo-be/app/module/promotions/response"
	"jaecoo-be/config/config"
	"jaecoo-be/utils/paginator"

	"github.com/rs/zerolog"
)

type promotionsService struct {
	Repo repository.PromotionsRepository
	Log  zerolog.Logger
	Cfg  *config.Config
}

type PromotionsService interface {
	GetAll(req request.PromotionsQueryRequest) (promotions []*response.PromotionsResponse, paging paginator.Pagination, err error)
	GetOne(id uint) (promotion *response.PromotionsResponse, err error)
	Create(req request.PromotionsCreateRequest) (promotion *response.PromotionsResponse, err error)
	Update(id uint, req request.PromotionsUpdateRequest) (promotion *response.PromotionsResponse, err error)
	Delete(id uint) (err error)
}

func NewPromotionsService(repo repository.PromotionsRepository, log zerolog.Logger, cfg *config.Config) PromotionsService {
	return &promotionsService{
		Repo: repo,
		Log:  log,
		Cfg:  cfg,
	}
}

func (_i *promotionsService) GetAll(req request.PromotionsQueryRequest) (promotions []*response.PromotionsResponse, paging paginator.Pagination, err error) {
	promotionsEntity, paging, err := _i.Repo.GetAll(req)
	if err != nil {
		return
	}

	host := _i.Cfg.App.Domain

	for _, promotion := range promotionsEntity {
		promotions = append(promotions, mapper.PromotionsResponseMapper(promotion, host))
	}

	return
}

func (_i *promotionsService) GetOne(id uint) (promotion *response.PromotionsResponse, err error) {
	promotionEntity, err := _i.Repo.FindOne(id)
	if err != nil {
		return
	}

	if promotionEntity == nil {
		err = errors.New("promotion not found")
		return
	}

	host := _i.Cfg.App.Domain

	promotion = mapper.PromotionsResponseMapper(promotionEntity, host)
	return
}

func (_i *promotionsService) Create(req request.PromotionsCreateRequest) (promotion *response.PromotionsResponse, err error) {
	promotionEntity := req.ToEntity()
	isActive := true
	promotionEntity.IsActive = &isActive

	promotionEntity, err = _i.Repo.Create(promotionEntity)
	if err != nil {
		return
	}

	host := _i.Cfg.App.Domain

	promotion = mapper.PromotionsResponseMapper(promotionEntity, host)
	return
}

func (_i *promotionsService) Update(id uint, req request.PromotionsUpdateRequest) (promotion *response.PromotionsResponse, err error) {
	promotionEntity := req.ToEntity()

	err = _i.Repo.Update(id, promotionEntity)
	if err != nil {
		return
	}

	promotionEntity, err = _i.Repo.FindOne(id)
	if err != nil {
		return
	}

	host := _i.Cfg.App.Domain

	promotion = mapper.PromotionsResponseMapper(promotionEntity, host)
	return
}

func (_i *promotionsService) Delete(id uint) (err error) {
	err = _i.Repo.Delete(id)
	return
}