package service

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

	"github.com/rs/zerolog"
)

type productsService struct {
	Repo repository.ProductsRepository
	Log  zerolog.Logger
	Cfg  *config.Config
}

type ProductsService interface {
	GetAll(req request.ProductsQueryRequest) (products []*response.ProductsResponse, paging paginator.Pagination, err error)
	GetOne(id uint) (product *response.ProductsResponse, err error)
	Create(req request.ProductsCreateRequest) (product *response.ProductsResponse, err error)
	Update(id uint, req request.ProductsUpdateRequest) (product *response.ProductsResponse, err error)
	Delete(id uint) (err error)
}

func NewProductsService(repo repository.ProductsRepository, log zerolog.Logger, cfg *config.Config) ProductsService {
	return &productsService{
		Repo: repo,
		Log:  log,
		Cfg:  cfg,
	}
}

func (_i *productsService) GetAll(req request.ProductsQueryRequest) (products []*response.ProductsResponse, paging paginator.Pagination, err error) {
	productsEntity, paging, err := _i.Repo.GetAll(req)
	if err != nil {
		return
	}

	host := _i.Cfg.App.Domain

	for _, product := range productsEntity {
		products = append(products, mapper.ProductsResponseMapper(product, host))
	}

	return
}

func (_i *productsService) GetOne(id uint) (product *response.ProductsResponse, err error) {
	productEntity, err := _i.Repo.FindOne(id)
	if err != nil {
		return
	}

	if productEntity == nil {
		err = errors.New("product not found")
		return
	}

	host := _i.Cfg.App.Domain

	product = mapper.ProductsResponseMapper(productEntity, host)
	return
}

func (_i *productsService) Create(req request.ProductsCreateRequest) (product *response.ProductsResponse, err error) {
	productEntity := req.ToEntity()
	isActive := true
	productEntity.IsActive = &isActive

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

	host := _i.Cfg.App.Domain

	product = mapper.ProductsResponseMapper(productEntity, host)
	return
}

func (_i *productsService) Update(id uint, req request.ProductsUpdateRequest) (product *response.ProductsResponse, err error) {
	productEntity := req.ToEntity()

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

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

	host := _i.Cfg.App.Domain

	product = mapper.ProductsResponseMapper(productEntity, host)
	return
}

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