init: radio init commit

service/radio/category_service.go

@@ -0,0 +1,87 @@
+package radio
+
+import (
+	"errors"
+	"sundynix-go/global"
+	"sundynix-go/model/radio"
+	radioReq "sundynix-go/model/radio/request"
+
+	"gorm.io/gorm"
+)
+
+type CategoryService struct{}
+
+// GetCategoryList 获取分类列表
+func (s *CategoryService) GetCategoryList(info radioReq.GetCategoryList) ([]radio.RadioCategory, int64, error) {
+	db := global.DB.Model(&radio.RadioCategory{}).Preload("Icon").Preload("Cover")
+	var list []radio.RadioCategory
+	var total int64
+
+	if info.Name != "" {
+		db = db.Where("name LIKE ?", "%"+info.Name+"%")
+	}
+	if info.Status > 0 {
+		db = db.Where("status = ?", info.Status)
+	}
+
+	err := db.Count(&total).Error
+	if err != nil {
+		return nil, 0, err
+	}
+
+	offset := (info.Current - 1) * info.PageSize
+	err = db.Offset(offset).Limit(info.PageSize).Order("sort ASC").Find(&list).Error
+	return list, total, err
+}
+
+func (s *CategoryService) GetAllCategory() ([]radio.RadioCategory, error) {
+	var res []radio.RadioCategory
+	err := global.DB.Find(&res).Preload(":Icon").Preload("Cover").Error
+	return res, err
+}
+
+// GetCategoryById 获取分类详情
+func (s *CategoryService) GetCategoryById(id string) (*radio.RadioCategory, error) {
+	var category radio.RadioCategory
+	err := global.DB.Where("id = ?", id).Preload("Icon").Preload("Cover").First(&category).Error
+	return &category, err
+}
+
+// SaveCategory 保存分类
+func (s *CategoryService) SaveCategory(req radioReq.SaveCategory) error {
+	category := radio.RadioCategory{
+		Name:        req.Name,
+		Description: req.Description,
+		IconId:      req.IconId,
+		CoverId:     req.CoverId,
+		Sort:        req.Sort,
+		Status:      req.Status,
+	}
+	return global.DB.Create(&category).Error
+}
+
+// UpdateCategory 更新分类
+func (s *CategoryService) UpdateCategory(req radioReq.UpdateCategory) error {
+	updates := map[string]interface{}{
+		"name":        req.Name,
+		"description": req.Description,
+		"icon_id":     req.IconId,
+		"cover_id":    req.CoverId,
+		"sort":        req.Sort,
+		"status":      req.Status,
+	}
+	return global.DB.Model(&radio.RadioCategory{}).Where("id = ?", req.Id).Updates(updates).Error
+}
+
+// DeleteCategory 删除分类
+func (s *CategoryService) DeleteCategory(id string) error {
+	return global.DB.Transaction(func(tx *gorm.DB) error {
+		// 检查是否有频道使用此分类
+		var count int64
+		tx.Model(&radio.RadioChannel{}).Where("category_id = ?", id).Count(&count)
+		if count > 0 {
+			return errors.New("该分类下存在频道，无法删除")
+		}
+		return tx.Where("id = ?", id).Delete(&radio.RadioCategory{}).Error
+	})
+}