feat: 数据分析

service/radio/interaction_service.go

@@ -15,30 +15,55 @@ var InteractionServiceApp = new(InteractionService)
 
 // AddHistory 添加收听历史
 func (s *InteractionService) AddHistory(userId string, req radioReq.AddHistory) error {
-	// 先查找是否已存在记录
+	// 1. 获取节目信息以拿到 ChannelId (用于日志冗余方便统计)
+	var program radio.RadioProgram
+	if err := global.DB.Select("id, channel_id").Where("id = ?", req.ProgramId).First(&program).Error; err != nil {
+		return err
+	}
+
+	// 2. 写入/更新用户书签 (RadioHistory)
 	var history radio.RadioHistory
 	err := global.DB.Where("user_id = ? AND program_id = ?", userId, req.ProgramId).First(&history).Error
 
 	if errors.Is(err, gorm.ErrRecordNotFound) {
-		// 不存在，创建新记录
 		history = radio.RadioHistory{
 			UserId:    userId,
 			ProgramId: req.ProgramId,
 			Progress:  req.Progress,
 			Duration:  req.Duration,
 		}
-		return global.DB.Create(&history).Error
-	}
-
-	if err != nil {
+		if err := global.DB.Create(&history).Error; err != nil {
+			return err
+		}
+	} else if err == nil {
+		if err := global.DB.Model(&history).Updates(map[string]interface{}{
+			"progress": req.Progress,
+			"duration": req.Duration,
+		}).Error; err != nil {
+			return err
+		}
+	} else {
 		return err
 	}
 
-	// 存在，更新进度
-	return global.DB.Model(&history).Updates(map[string]interface{}{
-		"progress": req.Progress,
-		"duration": req.Duration,
-	}).Error
+	// 3. 贪婪学习：如果节目表时长为0，且前端传回了有效时长，则自动补全元数据
+	if req.Duration > 0 && program.Duration == 0 {
+		global.DB.Model(&radio.RadioProgram{}).Where("id = ?", req.ProgramId).Update("duration", req.Duration)
+	}
+
+	// 4. 异步写入不可删除的日志表 (RadioListenLog) 用于趋势统计
+	go func() {
+		listenLog := radio.RadioListenLog{
+			UserId:    userId,
+			ProgramId: req.ProgramId,
+			ChannelId: program.ChannelId,
+			Progress:  req.Progress,
+			Duration:  req.Duration,
+		}
+		global.DB.Create(&listenLog)
+	}()
+
+	return nil
 }
 
 // GetHistoryList 获取收听历史列表