package mapper

import (
	"encoding/json"
	"jaecoo-be/app/database/entity"
	res "jaecoo-be/app/module/products/response"
	"path/filepath"
)

func ProductsResponseMapper(product *entity.Products, host string) *res.ProductsResponse {
	if product == nil {
		return nil
	}

	var colors []res.ProductColorResponse

	if product.Colors != nil && *product.Colors != "" {
		var rawColors []struct {
			Name      string  `json:"name"`
			ImagePath *string `json:"image_path"`
		}

		_ = json.Unmarshal([]byte(*product.Colors), &rawColors)

		for _, c := range rawColors {
			var imageUrl *string

			if c.ImagePath != nil {
				filename := filepath.Base(*c.ImagePath)
				url := host + "/products/viewer/" + filename
				imageUrl = &url
			}

			colors = append(colors, res.ProductColorResponse{
				Name:      c.Name,
				ImagePath: c.ImagePath,
				ImageUrl:  imageUrl,
			})
		}
	}

	var specifications []res.ProductSpecificationResponse

	if product.Specifications != nil && *product.Specifications != "" {
		var rawSpecs []struct {
			Title      string   `json:"title"`
			ImagePaths []string `json:"image_paths"`
		}

		_ = json.Unmarshal([]byte(*product.Specifications), &rawSpecs)

		for _, s := range rawSpecs {
			var imageUrls []string

			for _, imagePath := range s.ImagePaths {
				filename := filepath.Base(imagePath)
				url := host + "/products/viewer/" + filename
				imageUrls = append(imageUrls, url)
			}

			specifications = append(specifications, res.ProductSpecificationResponse{
				Title:      s.Title,
				ImagePaths: s.ImagePaths,
				ImageUrls:  imageUrls,
			})
		}
	}

	response := &res.ProductsResponse{
		ID:            product.ID,
		Title:         product.Title,
		Variant:       product.Variant,
		Price:         product.Price,
		ThumbnailPath: product.ThumbnailPath,
		Colors:        colors,
		Specifications: specifications,
		Status:        product.Status,
		StatusId:      product.StatusId,
		IsActive:      product.IsActive,
		CreatedAt:     product.CreatedAt,
		UpdatedAt:     product.UpdatedAt,
	}

	if product.ThumbnailPath != nil && *product.ThumbnailPath != "" {
		// Extract filename from path
		filename := filepath.Base(*product.ThumbnailPath)
		thumbnailUrl := host + "/products/viewer/" + filename
		response.ThumbnailUrl = &thumbnailUrl
	}

	return response
}