init

backend/internal/service/skin.go

@@ -0,0 +1,106 @@
+package service
+
+import (
+	"errors"
+
+	"affiliate_dash/internal/model"
+
+	"gorm.io/gorm"
+)
+
+type SkinService struct {
+	db *gorm.DB
+}
+
+func NewSkinService(db *gorm.DB) *SkinService {
+	return &SkinService{db: db}
+}
+
+type SkinListQuery struct {
+	Page     int
+	Size     int
+	Keyword  string
+	Game     string
+	Category string
+	Status   *int
+}
+
+func (s *SkinService) List(q SkinListQuery) ([]model.Skin, int64, error) {
+	if q.Page < 1 {
+		q.Page = 1
+	}
+	if q.Size < 1 || q.Size > 100 {
+		q.Size = 20
+	}
+	tx := s.db.Model(&model.Skin{})
+	if q.Keyword != "" {
+		tx = tx.Where("name LIKE ?", "%"+q.Keyword+"%")
+	}
+	if q.Game != "" {
+		tx = tx.Where("game = ?", q.Game)
+	}
+	if q.Category != "" {
+		tx = tx.Where("category = ?", q.Category)
+	}
+	if q.Status != nil {
+		tx = tx.Where("status = ?", *q.Status)
+	}
+	var total int64
+	if err := tx.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+	var list []model.Skin
+	err := tx.Order("id DESC").Offset((q.Page - 1) * q.Size).Limit(q.Size).Find(&list).Error
+	return list, total, err
+}
+
+func (s *SkinService) Get(id uint) (*model.Skin, error) {
+	var skin model.Skin
+	if err := s.db.First(&skin, id).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, errors.New("皮肤不存在")
+		}
+		return nil, err
+	}
+	return &skin, nil
+}
+
+func (s *SkinService) Create(skin *model.Skin) error {
+	return s.db.Create(skin).Error
+}
+
+func (s *SkinService) Update(id uint, updates map[string]interface{}) error {
+	res := s.db.Model(&model.Skin{}).Where("id = ?", id).Updates(updates)
+	if res.Error != nil {
+		return res.Error
+	}
+	if res.RowsAffected == 0 {
+		return errors.New("皮肤不存在")
+	}
+	return nil
+}
+
+func (s *SkinService) Delete(id uint) error {
+	res := s.db.Delete(&model.Skin{}, id)
+	if res.Error != nil {
+		return res.Error
+	}
+	if res.RowsAffected == 0 {
+		return errors.New("皮肤不存在")
+	}
+	return nil
+}
+
+func (s *SkinService) SeedDemo() error {
+	var count int64
+	s.db.Model(&model.Skin{}).Count(&count)
+	if count > 0 {
+		return nil
+	}
+	demos := []model.Skin{
+		{Name: "龙之觉醒", Game: "王者荣耀", Category: "史诗", Price: 88, CostPrice: 50, Commission: 0.15, Stock: -1, Status: 1, Description: "史诗皮肤示例"},
+		{Name: "星空旅人", Game: "和平精英", Category: "限定", Price: 128, CostPrice: 80, Commission: 0.12, Stock: 100, Status: 1, Description: "限定皮肤示例"},
+		{Name: "暗夜骑士", Game: "英雄联盟", Category: "传说", Price: 199, CostPrice: 120, Commission: 0.10, Stock: 50, Status: 1, Description: "传说皮肤示例"},
+	}
+	return s.db.Create(&demos).Error
+}