Add internal/service/music.go

internal/service/music.go

@@ -0,0 +1,70 @@
+package service
+
+import (
+	"gotest/internal/repository"
+)
+
+// MusicService 音乐服务
+type MusicService struct {
+	repo *repository.MusicRepository
+}
+
+// NewMusicService 创建音乐服务实例
+func NewMusicService(repo *repository.MusicRepository) *MusicService {
+	return &MusicService{repo: repo}
+}
+
+// ListCategories 获取音乐分类
+func (s *MusicService) ListCategories() (interface{}, error) {
+	return s.repo.ListCategories()
+}
+
+// ListSongs 获取歌曲列表
+func (s *MusicService) ListSongs(categoryID uint, keyword, sort string, page, pageSize int) (map[string]interface{}, error) {
+	songs, total, err := s.repo.ListSongs(categoryID, keyword, sort, page, pageSize)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"list":      songs,
+		"total":     total,
+		"page":      page,
+		"page_size": pageSize,
+	}, nil
+}
+
+// GetSong 获取歌曲详情
+func (s *MusicService) GetSong(id uint) (interface{}, error) {
+	return s.repo.GetSong(id)
+}
+
+// ListHot 获取热门歌曲
+func (s *MusicService) ListHot(limit int) (interface{}, error) {
+	return s.repo.ListHotSongs(limit)
+}
+
+// ListNew 获取新歌
+func (s *MusicService) ListNew(limit int) (interface{}, error) {
+	return s.repo.ListNewSongs(limit)
+}
+
+// GetHomeData 获取音乐首页数据（分类 + 热门 + 新歌）
+func (s *MusicService) GetHomeData() (map[string]interface{}, error) {
+	categories, err := s.repo.ListCategories()
+	if err != nil {
+		return nil, err
+	}
+	hot, err := s.repo.ListHotSongs(8)
+	if err != nil {
+		return nil, err
+	}
+	newSongs, err := s.repo.ListNewSongs(4)
+	if err != nil {
+		return nil, err
+	}
+	return map[string]interface{}{
+		"categories": categories,
+		"hot":        hot,
+		"new":        newSongs,
+	}, nil
+}