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package service
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import (
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"context"
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"strings"
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"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/global"
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"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/internal/dto"
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"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/internal/mysqldao"
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"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/internal/mysqlmodel"
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"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/pkg/errcode"
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)
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// GoodsService 商品管理服务。
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type GoodsService struct {
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goodsDao *mysqldao.GoodsDao
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}
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// NewGoodsService 创建商品服务。
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func NewGoodsService() *GoodsService {
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return &GoodsService{goodsDao: mysqldao.NewGoodsDao()}
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}
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// List 分页查询商品（管理端含下架商品）。
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func (s *GoodsService) List(ctx context.Context, request *dto.GoodsListRequest) (*dto.GoodsListResponse, *errcode.Error) {
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ctx, span := global.Tracer.Start(ctx, "svc.AdminGoodsList")
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defer span.End()
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page, pageSize := normalizePage(request.Page, request.PageSize)
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list, total, err := s.goodsDao.GoodsList(ctx, mysqldao.GoodsListParams{
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GoodsType: request.GoodsType,
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Status: request.Status,
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Keyword: strings.TrimSpace(request.Keyword),
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Page: page,
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Size: pageSize,
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})
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if err != nil {
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return nil, errcode.DatabaseError
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}
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items := make([]dto.GoodsItem, 0, len(list))
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for i := range list {
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items = append(items, buildGoodsItem(&list[i]))
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}
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return &dto.GoodsListResponse{
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PageResponse: dto.PageResponse{Total: total, Page: page, PageSize: pageSize},
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List: items,
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}, nil
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}
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// Create 创建商品。
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func (s *GoodsService) Create(ctx context.Context, adminID int64, request *dto.GoodsCreateRequest) (*dto.GoodsItem, *errcode.Error) {
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ctx, span := global.Tracer.Start(ctx, "svc.AdminGoodsCreate")
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defer span.End()
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code := strings.TrimSpace(request.GoodsCode)
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if code == "" {
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return nil, errcode.InvalidParams.WithDetails("商品编码不能为空")
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}
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if request.DiscountPrice > request.Price {
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return nil, errcode.GoodsPriceInvalid.WithDetails("售价不能高于原价")
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}
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// 编码唯一性校验（含软删，防历史编码占用）。
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if _, err := s.goodsDao.GoodsGetByCode(ctx, code); err == nil {
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return nil, errcode.GoodsCodeExists
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} else if !isNotFound(err) {
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return nil, errcode.DatabaseError
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}
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status := request.Status
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if status == 0 {
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status = GoodsStatusOffShelf // 新建默认下架，运营确认后再上架。
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}
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goods := &mysqlmodel.Goods{
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GoodsCode: code,
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GoodsName: strings.TrimSpace(request.GoodsName),
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GoodsType: request.GoodsType,
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Price: request.Price,
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DiscountPrice: request.DiscountPrice,
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MemberDays: request.MemberDays,
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CosQuota: request.UploadQuota,
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AIRecommendQuota: request.AIRecommendQuota,
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ClosetShareQuota: request.ClosetShareQuota,
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OutfitShareQuota: request.OutfitShareQuota,
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ValidDays: request.ValidDays,
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Description: request.Description,
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Status: status,
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}
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goods.CreatedBy = adminID
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goods.UpdatedBy = adminID
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if err := s.goodsDao.GoodsCreate(ctx, goods); err != nil {
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return nil, errcode.DatabaseError
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}
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item := buildGoodsItem(goods)
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return &item, nil
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}
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// Update 更新商品（传什么改什么；不修改编码与类型）。
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func (s *GoodsService) Update(ctx context.Context, adminID int64, id int64, request *dto.GoodsUpdateRequest) *errcode.Error {
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ctx, span := global.Tracer.Start(ctx, "svc.AdminGoodsUpdate")
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defer span.End()
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if _, err := s.goodsDao.GoodsGetByID(ctx, id); err != nil {
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if isNotFound(err) {
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return errcode.GoodsNotFound
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}
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return errcode.DatabaseError
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}
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updates := map[string]any{"updated_by": adminID}
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if request.GoodsName != nil {
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updates["goods_name"] = strings.TrimSpace(*request.GoodsName)
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}
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if request.Price != nil {
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updates["price"] = *request.Price
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}
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if request.DiscountPrice != nil {
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updates["discount_price"] = *request.DiscountPrice
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}
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if request.MemberDays != nil {
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updates["member_days"] = *request.MemberDays
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}
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if request.UploadQuota != nil {
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updates["cos_quota"] = *request.UploadQuota
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}
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if request.AIRecommendQuota != nil {
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updates["ai_recommend_quota"] = *request.AIRecommendQuota
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}
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if request.ClosetShareQuota != nil {
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updates["closet_share_quota"] = *request.ClosetShareQuota
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}
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if request.OutfitShareQuota != nil {
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updates["outfit_share_quota"] = *request.OutfitShareQuota
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}
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if request.ValidDays != nil {
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updates["valid_days"] = *request.ValidDays
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}
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if request.Description != nil {
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updates["description"] = *request.Description
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}
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if len(updates) == 1 {
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return nil // 无可更新字段。
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}
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if err := s.goodsDao.GoodsUpdate(ctx, id, updates); err != nil {
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return errcode.DatabaseError
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}
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return nil
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}
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// UpdateStatus 商品上下架。
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func (s *GoodsService) UpdateStatus(ctx context.Context, adminID int64, id int64, request *dto.GoodsStatusRequest) *errcode.Error {
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ctx, span := global.Tracer.Start(ctx, "svc.AdminGoodsUpdateStatus")
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defer span.End()
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if _, err := s.goodsDao.GoodsGetByID(ctx, id); err != nil {
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if isNotFound(err) {
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return errcode.GoodsNotFound
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}
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return errcode.DatabaseError
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}
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if err := s.goodsDao.GoodsUpdate(ctx, id, map[string]any{"status": request.Status, "updated_by": adminID}); err != nil {
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return errcode.DatabaseError
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}
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return nil
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}
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// Delete 软删除商品（历史订单已快照商品信息，删除不影响历史订单）。
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func (s *GoodsService) Delete(ctx context.Context, adminID int64, id int64) *errcode.Error {
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ctx, span := global.Tracer.Start(ctx, "svc.AdminGoodsDelete")
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defer span.End()
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if _, err := s.goodsDao.GoodsGetByID(ctx, id); err != nil {
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if isNotFound(err) {
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return errcode.GoodsNotFound
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}
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return errcode.DatabaseError
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}
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if err := s.goodsDao.GoodsSoftDelete(ctx, id); err != nil {
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return errcode.DatabaseError
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}
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return nil
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}
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// buildGoodsItem 商品模型 → 响应（注意 dto.UploadQuota 对应 model.CosQuota）。
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func buildGoodsItem(g *mysqlmodel.Goods) dto.GoodsItem {
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return dto.GoodsItem{
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ID: g.ID,
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GoodsCode: g.GoodsCode,
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GoodsName: g.GoodsName,
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GoodsType: g.GoodsType,
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Price: g.Price,
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DiscountPrice: g.DiscountPrice,
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MemberDays: g.MemberDays,
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UploadQuota: g.CosQuota,
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AIRecommendQuota: g.AIRecommendQuota,
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ClosetShareQuota: g.ClosetShareQuota,
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OutfitShareQuota: g.OutfitShareQuota,
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ValidDays: g.ValidDays,
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Description: g.Description,
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Status: g.Status,
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ProductID: g.ProductID,
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ProductStatus: g.ProductStatus,
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CreatedAt: g.CreatedAt,
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UpdatedAt: g.UpdatedAt,
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}
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}
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