package product

import (
	"context"
	"furtuna-be/internal/common/logger"
	"furtuna-be/internal/common/mycontext"
	"furtuna-be/internal/entity"
	"furtuna-be/internal/repository"

	"go.uber.org/zap"
)

type ProductService struct {
	repo repository.Product
}

func NewProductService(repo repository.Product) *ProductService {
	return &ProductService{
		repo: repo,
	}
}

func (s *ProductService) Create(ctx mycontext.Context, productReq *entity.Product) (*entity.Product, error) {
	productDB := productReq.ToProductDB()
	productDB.CreatedBy = ctx.RequestedBy()

	productDB, err := s.repo.CreateProduct(ctx, productDB)
	if err != nil {
		logger.ContextLogger(ctx).Error("error when create product", zap.Error(err))
		return nil, err
	}

	return productDB.ToProduct(), nil
}

func (s *ProductService) Update(ctx mycontext.Context, id int64, productReq *entity.Product) (*entity.Product, error) {
	existingProduct, err := s.repo.GetProductByID(ctx, id)
	if err != nil {
		return nil, err
	}

	existingProduct.ToUpdatedProduct(ctx.RequestedBy(), *productReq)

	updatedProductDB, err := s.repo.UpdateProduct(ctx, existingProduct.ToProductDB())
	if err != nil {
		logger.ContextLogger(ctx).Error("error when update product", zap.Error(err))
		return nil, err
	}

	return updatedProductDB.ToProduct(), nil
}

func (s *ProductService) GetByID(ctx context.Context, id int64) (*entity.Product, error) {
	productDB, err := s.repo.GetProductByID(ctx, id)
	if err != nil {
		logger.ContextLogger(ctx).Error("error when get product by id", zap.Error(err))
		return nil, err
	}

	return productDB.ToProduct(), nil
}

func (s *ProductService) GetAll(ctx context.Context, search entity.ProductSearch) ([]*entity.Product, int, error) {
	products, total, err := s.repo.GetAllProducts(ctx, search)
	if err != nil {
		logger.ContextLogger(ctx).Error("error when get all products", zap.Error(err))
		return nil, 0, err
	}

	return products.ToProductList(), total, nil
}

func (s *ProductService) GetProductPOS(ctx context.Context, search entity.ProductPOS) ([]*entity.Product, error) {
	products, err := s.repo.GetProductByPartnerIDAndSiteID(ctx, search.PartnerID, search.SiteID)
	if err != nil {
		logger.ContextLogger(ctx).Error("error when get all products", zap.Error(err))
		return nil, err
	}

	return products.ToProductListPOS(), nil
}

func (s *ProductService) Delete(ctx mycontext.Context, id int64) error {
	productDB, err := s.repo.GetProductByID(ctx, id)
	if err != nil {
		logger.ContextLogger(ctx).Error("error when get product by id", zap.Error(err))
		return err
	}

	productDB.SetDeleted(ctx.RequestedBy())

	_, err = s.repo.UpdateProduct(ctx, productDB)
	if err != nil {
		logger.ContextLogger(ctx).Error("error when update product", zap.Error(err))
		return err
	}

	return nil
}