package service

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

	"github.com/rs/zerolog"
)

type bannersService struct {
	Repo repository.BannersRepository
	Log  zerolog.Logger
	Cfg  *config.Config
}

type BannersService interface {
	GetAll(req request.BannersQueryRequest) (banners []*response.BannersResponse, paging paginator.Pagination, err error)
	GetOne(id uint) (banner *response.BannersResponse, err error)
	Create(req request.BannersCreateRequest) (banner *response.BannersResponse, err error)
	Update(id uint, req request.BannersUpdateRequest) (banner *response.BannersResponse, err error)
	Delete(id uint) (err error)
}

func NewBannersService(repo repository.BannersRepository, log zerolog.Logger, cfg *config.Config) BannersService {
	return &bannersService{
		Repo: repo,
		Log:  log,
		Cfg:  cfg,
	}
}

func (_i *bannersService) GetAll(req request.BannersQueryRequest) (banners []*response.BannersResponse, paging paginator.Pagination, err error) {
	bannersEntity, paging, err := _i.Repo.GetAll(req)
	if err != nil {
		return
	}

	host := _i.Cfg.App.Domain

	for _, banner := range bannersEntity {
		banners = append(banners, mapper.BannersResponseMapper(banner, host))
	}

	return
}

func (_i *bannersService) GetOne(id uint) (banner *response.BannersResponse, err error) {
	bannerEntity, err := _i.Repo.FindOne(id)
	if err != nil {
		return
	}

	if bannerEntity == nil {
		err = errors.New("banner not found")
		return
	}

	host := _i.Cfg.App.Domain

	banner = mapper.BannersResponseMapper(bannerEntity, host)
	return
}

func (_i *bannersService) Create(req request.BannersCreateRequest) (banner *response.BannersResponse, err error) {
	bannerEntity := req.ToEntity()
	isActive := true
	bannerEntity.IsActive = &isActive

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

	host := _i.Cfg.App.Domain

	banner = mapper.BannersResponseMapper(bannerEntity, host)
	return
}

func (_i *bannersService) Update(id uint, req request.BannersUpdateRequest) (banner *response.BannersResponse, err error) {
	bannerEntity := req.ToEntity()

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

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

	host := _i.Cfg.App.Domain

	banner = mapper.BannersResponseMapper(bannerEntity, host)
	return
}

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