package service

import (
	dao "assets/dao/asset"
	dto "assets/model/dto/asset"
	"context"

	"github.com/gogf/gf/v2/errors/gerror"
	"go.mongodb.org/mongo-driver/v2/bson"
)

type privateSku struct{}

// PrivateSku 私域SKU服务
var PrivateSku = new(privateSku)

// CreatePrivateSku 创建私域SKU
func (s *privateSku) CreatePrivateSku(ctx context.Context, req *dto.CreatePrivateSkuReq) (*dto.CreatePrivateSkuRes, error) {
	// 保存到数据库
	ids, err := dao.PrivateSku.Insert(ctx, req)
	if err != nil {
		return nil, gerror.Wrap(err, "创建私域SKU失败")
	}

	var id *bson.ObjectID
	if len(ids) > 0 {
		if objectID, ok := ids[0].(bson.ObjectID); ok {
			id = &objectID
		}
	}

	return &dto.CreatePrivateSkuRes{ID: id}, nil
}

// BatchCreatePrivateSku 批量创建私域SKU
func (s *privateSku) BatchCreatePrivateSku(ctx context.Context, req *dto.BatchCreatePrivateSkuReq) (*dto.BatchCreatePrivateSkuRes, error) {
	// 保存到数据库
	ids, err := dao.PrivateSku.BatchInsert(ctx, req)
	if err != nil {
		return nil, gerror.Wrap(err, "批量创建私域SKU失败")
	}

	// 转换ID列表
	idList := make([]*bson.ObjectID, 0, len(ids))
	for _, id := range ids {
		if objectID, ok := id.(bson.ObjectID); ok {
			idList = append(idList, &objectID)
		}
	}

	return &dto.BatchCreatePrivateSkuRes{IDs: idList}, nil
}

// UpdatePrivateSku 更新私域SKU
func (s *privateSku) UpdatePrivateSku(ctx context.Context, req *dto.UpdatePrivateSkuReq) error {
	// 更新到数据库
	err := dao.PrivateSku.Update(ctx, req)
	if err != nil {
		return gerror.Wrap(err, "更新私域SKU失败")
	}

	return nil
}

// DeletePrivateSku 删除私域SKU
func (s *privateSku) DeletePrivateSku(ctx context.Context, id *bson.ObjectID) error {
	return dao.PrivateSku.DeleteFake(ctx, id)
}

// GetPrivateSku 获取私域SKU详情
func (s *privateSku) GetPrivateSku(ctx context.Context, id *bson.ObjectID) (*dto.GetPrivateSkuRes, error) {
	sku, err := dao.PrivateSku.GetOne(ctx, id)
	if err != nil {
		return nil, gerror.Wrap(err, "获取私域SKU失败")
	}

	// 转换为响应
	res := &dto.GetPrivateSkuRes{
		ID:                  sku.Id,
		SkuName:             sku.SkuName,
		ImageURL:            sku.ImageURL,
		Price:               sku.Price,
		Stock:               sku.Stock,
		Sort:                sku.Sort,
		PrivateCategoryPath: sku.PrivateCategoryPath,
		CreatedAt:           sku.CreatedAt.Format("2006-01-02 15:04:05"),
		UpdatedAt:           sku.UpdatedAt.Format("2006-01-02 15:04:05"),
	}

	return res, nil
}

// ListPrivateSku 获取私域SKU列表
func (s *privateSku) ListPrivateSku(ctx context.Context, req *dto.ListPrivateSkuReq) (*dto.ListPrivateSkuRes, error) {
	// 获取数据
	skus, total, err := dao.PrivateSku.List(ctx, req)
	if err != nil {
		return nil, gerror.Wrap(err, "获取私域SKU列表失败")
	}

	// 转换为响应
	listItems := make([]*dto.PrivateSkuListItem, 0, len(skus))
	for _, sku := range skus {
		listItems = append(listItems, &dto.PrivateSkuListItem{
			ID:                  sku.Id,
			SkuName:             sku.SkuName,
			ImageURL:            sku.ImageURL,
			Price:               sku.Price,
			Stock:               sku.Stock,
			Sort:                sku.Sort,
			PrivateCategoryPath: sku.PrivateCategoryPath,
			CreatedAt:           sku.CreatedAt.Format("2006-01-02 15:04:05"),
			UpdatedAt:           sku.UpdatedAt.Format("2006-01-02 15:04:05"),
		})
	}

	return &dto.ListPrivateSkuRes{
		List:  listItems,
		Total: total,
	}, nil
}

// UpdatePrivateSkuStock 更新私域SKU库存
func (s *privateSku) UpdatePrivateSkuStock(ctx context.Context, id *bson.ObjectID, stockChange int) error {
	return dao.PrivateSku.UpdateStock(ctx, id, stockChange)
}

// GenerateTestData 生成测试数据
func (s *privateSku) GenerateTestData(ctx context.Context) error {
	testData := &dto.BatchCreatePrivateSkuReq{
		Skus: []dto.CreatePrivateSkuReq{
			{
				SkuName:             "联想ThinkPad X1 Carbon 14英寸 i7 16G 512G",
				ImageURL:            "https://example.com/images/lenovo_x1_carbon.jpg",
				Price:               899900, // 8999.00元
				Stock:               100,
				Sort:                1,
				PrivateCategoryPath: "/笔记本电脑/ThinkPad",
			},
			{
				SkuName:             "联想ThinkPad X1 Carbon 14英寸 i7 32G 1T",
				ImageURL:            "https://example.com/images/lenovo_x1_carbon_32g.jpg",
				Price:               1199900, // 11999.00元
				Stock:               50,
				Sort:                2,
				PrivateCategoryPath: "/笔记本电脑/ThinkPad",
			},
			{
				SkuName:             "戴尔Latitude 7440 14英寸 i7 16G 512G",
				ImageURL:            "https://example.com/images/dell_latitude_7440.jpg",
				Price:               750000, // 7500.00元
				Stock:               80,
				Sort:                1,
				PrivateCategoryPath: "/笔记本电脑/Latitude",
			},
			{
				SkuName:             "戴尔Latitude 7440 14英寸 i7 32G 1T",
				ImageURL:            "https://example.com/images/dell_latitude_7440_32g.jpg",
				Price:               999900, // 9999.00元
				Stock:               60,
				Sort:                2,
				PrivateCategoryPath: "/笔记本电脑/Latitude",
			},
			{
				SkuName:             "惠普暗影精灵9 16.1英寸 i7 32G 1T RTX4060",
				ImageURL:            "https://example.com/images/hp_omen_9.jpg",
				Price:               849900, // 8499.00元
				Stock:               70,
				Sort:                1,
				PrivateCategoryPath: "/游戏笔记本/暗影精灵",
			},
			{
				SkuName:             "惠普暗影精灵9 16.1英寸 i9 32G 2T RTX4070",
				ImageURL:            "https://example.com/images/hp_omen_9_i9.jpg",
				Price:               1249900, // 12499.00元
				Stock:               40,
				Sort:                2,
				PrivateCategoryPath: "/游戏笔记本/暗影精灵",
			},
		},
	}

	_, err := s.BatchCreatePrivateSku(ctx, testData)
	if err != nil {
		return gerror.Wrap(err, "生成测试数据失败")
	}

	return nil
}