refactor: 移除使用次数扣除逻辑，调整活动类型及记录逻辑

src/ai-coach/ai-coach.controller.ts

@@ -65,7 +65,6 @@ export class AiCoachController {
       confirmationData: body.confirmationData,
     });
 
-    await this.usersService.deductUserUsageCount(userId);
 
     // 普通流式/非流式响应
     const readable = result as any;

src/ai-coach/ai-coach.service.ts

@@ -517,6 +517,9 @@ export class AiCoachService {
       messages.unshift({ role: 'system', content: NUTRITION_ANALYST_PROMPT });
     }
 
+    // 普通聊天才需要扣减次数
+    await this.usersService.deductUserUsageCount(params.userId);
+
     return this.generateAIResponse(params.conversationId, params.userId, messages);
   }
 

src/goals/services/goal-task.service.ts

@@ -3,12 +3,14 @@ import { InjectModel } from '@nestjs/sequelize';
 import { Op, WhereOptions } from 'sequelize';
 import { Goal, GoalRepeatType, GoalStatus } from '../models/goal.model';
 import { GoalTask, TaskStatus } from '../models/goal-task.model';
-import { CreateGoalTaskDto, UpdateGoalTaskDto, GoalTaskQueryDto, CompleteGoalTaskDto } from '../dto/goal-task.dto';
+import { UpdateGoalTaskDto, GoalTaskQueryDto, CompleteGoalTaskDto } from '../dto/goal-task.dto';
 import * as dayjs from 'dayjs';
 import * as weekOfYear from 'dayjs/plugin/weekOfYear';
 import * as isoWeek from 'dayjs/plugin/isoWeek';
 import * as isSameOrBefore from 'dayjs/plugin/isSameOrBefore';
 import * as isSameOrAfter from 'dayjs/plugin/isSameOrAfter';
+import { ActivityLevel, ActivityType } from 'src/users/models/user-activity.model';
+import { UserActivityService } from 'src/users/services/user-activity.service';
 
 dayjs.extend(weekOfYear);
 dayjs.extend(isoWeek);
@@ -24,6 +26,7 @@ export class GoalTaskService {
     private readonly goalModel: typeof Goal,
     @InjectModel(GoalTask)
     private readonly goalTaskModel: typeof GoalTask,
+    private readonly userActivityService: UserActivityService,
   ) { }
 
   /**
@@ -452,6 +455,21 @@ export class GoalTaskService {
 
       await task.save();
 
+      try {
+        const today = dayjs().format('YYYY-MM-DD');
+
+        await this.userActivityService.recordActivity(userId, {
+          activityType: ActivityType.GOAL,
+          activityDate: today,
+          level: ActivityLevel.MEDIUM,
+          remark: `完成目标任务: ${task.title}`,
+        });
+        this.logger.log(`记录用户活跃 - 用户: ${userId} 完成目标任务: ${task.title}`);
+      } catch (activityError) {
+        // 记录活跃失败不影响主要业务流程
+        this.logger.error(`记录用户活跃失败: ${activityError.message}`);
+      }
+
       this.logger.log(`用户 ${userId} 完成任务: ${task.title}, 当前进度: ${task.currentCount}/${task.targetCount}`);
 
       return this.formatTaskResponse(task);

src/users/models/user-activity.model.ts

@@ -4,7 +4,7 @@ import { User } from './user.model';
 
 export enum ActivityType {
   LOGIN = 1,           // 登录
-  WORKOUT = 2,         // 训练
+  GOAL = 2,         // 目标任务完成
   DIET_RECORD = 3,     // 饮食记录
   WEIGHT_RECORD = 4,   // 体重记录
   PROFILE_UPDATE = 5,  // 资料更新
@@ -14,7 +14,7 @@ export enum ActivityType {
 // 活跃类型显示名称映射
 export const ActivityTypeNames: Record<ActivityType, string> = {
   [ActivityType.LOGIN]: '登录',
-  [ActivityType.WORKOUT]: '训练',
+  [ActivityType.GOAL]: '目标任务完成',
   [ActivityType.DIET_RECORD]: '饮食记录',
   [ActivityType.WEIGHT_RECORD]: '体重记录',
   [ActivityType.PROFILE_UPDATE]: '资料更新',
@@ -77,7 +77,7 @@ export class UserActivity extends SequelizeModel<UserActivityAttributes, UserAct
   @Column({
     type: DataType.TINYINT,
     allowNull: false,
-    comment: '活跃类型：1-登录，2-训练，3-饮食记录，4-体重记录，5-资料更新，6-打卡',
+    comment: '活跃类型：1-登录，2-目标任务完成，3-饮食记录，4-体重记录，5-资料更新，6-打卡',
   })
   activityType!: ActivityType;
 

src/users/users.module.ts

@@ -40,6 +40,6 @@ import { ActivityLogsModule } from '../activity-logs/activity-logs.module';
   ],
   controllers: [UsersController],
   providers: [UsersService, ApplePurchaseService, EncryptionService, AppleAuthService, CosService, UserActivityService],
-  exports: [UsersService, AppleAuthService],
+  exports: [UsersService, AppleAuthService, UserActivityService],
 })
 export class UsersModule { }