更新训练会话API文档和服务逻辑

- 修改训练会话文档，增加三种训练创建方式的详细说明，包括自动获取、基于计划手动创建和完全自定义创建。
- 在控制器中新增创建训练会话和向训练会话添加自定义动作的API，支持基于训练计划或自定义动作创建训练会话。
- 更新服务逻辑，支持创建自定义训练会话并添加自定义动作，增强训练会话管理的灵活性和用户体验。

docs/workout-sessions-api-guide.md

@@ -45,17 +45,69 @@ POST /training-plans/{planId}/exercises
 POST /training-plans/{planId}/activate
 ```
 
-### 第二步：开始每日训练
+### 第二步：开始训练（三种方式）
 
+#### 方式一：自动获取今日训练（推荐）
 ```bash
-# 1. 获取今日训练会话（如不存在则自动创建）
+# 获取今日训练会话（如不存在则自动创建）
 GET /workouts/today
 # 系统会自动基于激活的训练计划创建今日训练会话
+```
 
-# 2. 开始训练会话（可选）
+#### 方式二：基于训练计划手动创建
-POST /workouts/sessions/{sessionId}/start
+```bash
+POST /workouts/sessions
 {
-  "startedAt": "2024-01-15T09:00:00.000Z"
+  "trainingPlanId": "{planId}",
+  "name": "晚间训练",
+  "scheduledDate": "2024-01-15T19:00:00.000Z"
+}
+```
+
+#### 方式三：创建完全自定义训练
+```bash
+POST /workouts/sessions
+{
+  "name": "自定义核心训练",
+  "scheduledDate": "2024-01-15T15:00:00.000Z",
+  "customExercises": [
+    {
+      "exerciseKey": "plank",
+      "name": "平板支撑",
+      "plannedDurationSec": 60,
+      "itemType": "exercise",
+      "sortOrder": 1
+    },
+    {
+      "name": "休息",
+      "plannedDurationSec": 30,
+      "itemType": "rest",
+      "sortOrder": 2
+    },
+    {
+      "name": "自定义深蹲变式",
+      "plannedSets": 3,
+      "plannedReps": 20,
+      "note": "脚距离肩膀更宽",
+      "itemType": "exercise",
+      "sortOrder": 3
+    }
+  ]
+}
+```
+
+### 第三步：执行训练
+
+```bash
+# 1. 开始训练会话（可选）
+POST /workouts/sessions/{sessionId}/start
+
+# 2. 动态添加动作（如果需要）
+POST /workouts/sessions/{sessionId}/exercises
+{
+  "name": "额外的拉伸",
+  "plannedDurationSec": 120,
+  "itemType": "exercise"
 }
 
 # 3. 开始特定动作
@@ -87,25 +139,27 @@ POST /workouts/sessions/{sessionId}/exercises/{exerciseId}/complete
 - 每日训练是独立的实例
 - 修改计划不影响历史训练记录
 
-### 2. 自动化管理
+### 2. 灵活的创建方式
-- 客户端直接获取今日训练，系统自动创建
+- 自动创建：基于激活计划的今日训练
-- 所有动作完成后自动完成训练会话
+- 计划创建：基于指定训练计划创建
-- 无需手动管理会话生命周期
+- 自定义创建：完全自定义的训练动作
 
 ### 3. 进度追踪
 - 每个训练会话都有完整的状态跟踪
 - 支持详细的性能数据记录
 - 可以分析训练趋势和进步情况
 
-### 4. 灵活性
+### 4. 动态调整能力
-- 支持训练中的临时调整
+- 支持训练中动态添加动作
 - 支持跳过或修改特定动作
+- 自动完成会话管理
 - 自动计算训练统计数据
 
 ## API 端点总览
 
 ### 训练会话管理
 - `GET /workouts/today` - 获取/自动创建今日训练会话 ⭐
+- `POST /workouts/sessions` - 手动创建训练会话（支持基于计划或自定义动作）
 - `GET /workouts/sessions` - 获取训练会话列表
 - `GET /workouts/sessions/{id}` - 获取训练会话详情
 - `POST /workouts/sessions/{id}/start` - 开始训练（可选）
@@ -113,6 +167,7 @@ POST /workouts/sessions/{sessionId}/exercises/{exerciseId}/complete
 - 注意：训练会话在所有动作完成后自动完成
 
 ### 训练动作管理
+- `POST /workouts/sessions/{id}/exercises` - 向训练会话添加自定义动作 ⭐
 - `GET /workouts/sessions/{id}/exercises` - 获取训练动作列表
 - `GET /workouts/sessions/{id}/exercises/{exerciseId}` - 获取动作详情
 - `POST /workouts/sessions/{id}/exercises/{exerciseId}/start` - 开始动作

src/workouts/dto/workout-session.dto.ts

@@ -2,7 +2,37 @@ import { ApiProperty, PartialType } from '@nestjs/swagger';
 import { IsArray, IsBoolean, IsDateString, IsEnum, IsInt, IsNotEmpty, IsOptional, IsString, IsUUID, Min } from 'class-validator';
 import { WorkoutStatus } from '../models/workout-session.model';
 
-// 注意：训练会话由系统自动创建，不需要手动创建DTO
+export class CreateWorkoutSessionDto {
+  @ApiProperty({ description: '训练计划ID（基于训练计划创建时必填）', required: false })
+  @IsUUID()
+  @IsOptional()
+  trainingPlanId?: string;
+
+  @ApiProperty({ description: '训练会话名称' })
+  @IsString()
+  @IsNotEmpty()
+  name: string;
+
+  @ApiProperty({ description: '计划训练日期', required: false })
+  @IsDateString()
+  @IsOptional()
+  scheduledDate?: string;
+
+  @ApiProperty({ description: '自定义训练动作列表（自定义训练时使用）', required: false, type: 'array' })
+  @IsArray()
+  @IsOptional()
+  customExercises?: Array<{
+    exerciseKey?: string;
+    name: string;
+    plannedSets?: number;
+    plannedReps?: number;
+    plannedDurationSec?: number;
+    restSec?: number;
+    note?: string;
+    itemType?: 'exercise' | 'rest' | 'note';
+    sortOrder: number;
+  }>;
+}
 
 export class StartWorkoutDto {
   @ApiProperty({ description: '实际开始时间', required: false })

src/workouts/workouts.controller.ts

@@ -2,6 +2,7 @@ import { Body, Controller, Delete, Get, Param, Post, Query, UseGuards, Put } fro
 import { ApiBody, ApiOperation, ApiParam, ApiTags } from '@nestjs/swagger';
 import { WorkoutsService } from './workouts.service';
 import {
+  CreateWorkoutSessionDto,
   StartWorkoutDto,
   UpdateWorkoutSessionDto,
   WorkoutSessionResponseDto
@@ -26,7 +27,12 @@ export class WorkoutsController {
 
   // ==================== 训练会话管理 ====================
 
-  // 注意：不提供手动创建会话接口，客户端应使用 GET /workouts/today 自动获取/创建
+  @Post('sessions')
+  @ApiOperation({ summary: '创建训练会话（支持基于训练计划或自定义动作）' })
+  @ApiBody({ type: CreateWorkoutSessionDto })
+  async createSession(@CurrentUser() user: AccessTokenPayload, @Body() dto: CreateWorkoutSessionDto) {
+    return this.workoutsService.createWorkoutSession(user.sub, dto);
+  }
 
   @Get('sessions')
   @ApiOperation({ summary: '获取训练会话列表' })
@@ -69,6 +75,18 @@ export class WorkoutsController {
 
   // ==================== 训练动作管理 ====================
 
+  @Post('sessions/:id/exercises')
+  @ApiOperation({ summary: '向训练会话添加自定义动作' })
+  @ApiParam({ name: 'id', description: '训练会话ID' })
+  @ApiBody({ type: CreateWorkoutExerciseDto })
+  async addExerciseToSession(
+    @CurrentUser() user: AccessTokenPayload,
+    @Param('id') sessionId: string,
+    @Body() dto: CreateWorkoutExerciseDto,
+  ) {
+    return this.workoutsService.addExerciseToSession(user.sub, sessionId, dto);
+  }
+
   @Get('sessions/:id/exercises')
   @ApiOperation({ summary: '获取训练会话的所有动作' })
   @ApiParam({ name: 'id', description: '训练会话ID' })

src/workouts/workouts.service.ts

@@ -6,21 +6,18 @@ import { TrainingPlan } from '../training-plans/models/training-plan.model';
 import { ScheduleExercise } from '../training-plans/models/schedule-exercise.model';
 import { Exercise } from '../exercises/models/exercise.model';
 import {
+  CreateWorkoutSessionDto,
   StartWorkoutDto,
-  UpdateWorkoutSessionDto,
 } from './dto/workout-session.dto';
 import {
   CreateWorkoutExerciseDto,
   UpdateWorkoutExerciseDto,
   StartWorkoutExerciseDto,
   CompleteWorkoutExerciseDto,
-  UpdateWorkoutExerciseOrderDto,
 } from './dto/workout-exercise.dto';
-import { ActivityLogsService } from '../activity-logs/activity-logs.service';
-import { ActivityActionType, ActivityEntityType } from '../activity-logs/models/activity-log.model';
 import { Logger as WinstonLogger } from 'winston';
 import { WINSTON_MODULE_PROVIDER } from 'nest-winston';
-import { Op, Transaction } from 'sequelize';
+import { Op } from 'sequelize';
 
 @Injectable()
 export class WorkoutsService {
@@ -37,11 +34,30 @@ export class WorkoutsService {
     private scheduleExerciseModel: typeof ScheduleExercise,
     @InjectModel(Exercise)
     private exerciseModel: typeof Exercise,
-    private readonly activityLogsService: ActivityLogsService,
   ) { }
 
   // ==================== 训练会话管理 ====================
 
+  /**
+   * 创建训练会话（支持基于训练计划或自定义动作）
+   */
+  async createWorkoutSession(userId: string, dto: CreateWorkoutSessionDto) {
+    if (dto.trainingPlanId) {
+      // 基于训练计划创建
+      return this.createWorkoutSessionFromPlan(
+        userId,
+        dto.trainingPlanId,
+        dto.scheduledDate ? new Date(dto.scheduledDate) : new Date(),
+        dto.name
+      );
+    } else if (dto.customExercises && dto.customExercises.length > 0) {
+      // 基于自定义动作创建
+      return this.createCustomWorkoutSession(userId, dto);
+    } else {
+      throw new BadRequestException('必须提供训练计划ID或自定义动作列表');
+    }
+  }
+
   /**
    * 获取今日训练会话，如果不存在则自动创建
    */
@@ -100,10 +116,69 @@ export class WorkoutsService {
     return this.createWorkoutSessionFromPlan(userId, activeTrainingPlan.id, today);
   }
 
+  /**
+   * 创建自定义训练会话
+   */
+  private async createCustomWorkoutSession(userId: string, dto: CreateWorkoutSessionDto) {
+    const transaction = await this.workoutSessionModel.sequelize?.transaction();
+    if (!transaction) throw new Error('Failed to start transaction');
+
+    try {
+      // 1. 创建训练会话
+      const workoutSession = await this.workoutSessionModel.create({
+        userId,
+        trainingPlanId: null, // 自定义训练不关联训练计划
+        name: dto.name,
+        scheduledDate: dto.scheduledDate ? new Date(dto.scheduledDate) : new Date(),
+        status: 'planned',
+      }, { transaction });
+
+      // 2. 创建自定义动作
+      for (const customExercise of dto.customExercises!) {
+        // 如果有exerciseKey，验证动作是否存在
+        if (customExercise.exerciseKey) {
+          const exercise = await this.exerciseModel.findByPk(customExercise.exerciseKey);
+          if (!exercise) {
+            throw new NotFoundException(`动作 "${customExercise.exerciseKey}" 不存在`);
+          }
+        }
+
+        await this.workoutExerciseModel.create({
+          workoutSessionId: workoutSession.id,
+          userId,
+          exerciseKey: customExercise.exerciseKey,
+          name: customExercise.name,
+          plannedSets: customExercise.plannedSets,
+          plannedReps: customExercise.plannedReps,
+          plannedDurationSec: customExercise.plannedDurationSec,
+          restSec: customExercise.restSec,
+          note: customExercise.note || '',
+          itemType: customExercise.itemType || 'exercise',
+          status: 'pending',
+          sortOrder: customExercise.sortOrder,
+        }, { transaction });
+      }
+
+      await transaction.commit();
+
+      this.winstonLogger.info(`创建自定义训练会话 ${workoutSession.id}`, {
+        context: 'WorkoutsService',
+        userId,
+        workoutSessionId: workoutSession.id,
+        exerciseCount: dto.customExercises!.length,
+      });
+
+      return this.getWorkoutSessionDetail(userId, workoutSession.id);
+    } catch (error) {
+      await transaction.rollback();
+      throw error;
+    }
+  }
+
   /**
    * 从训练计划创建训练会话（内部方法）
    */
-  private async createWorkoutSessionFromPlan(userId: string, trainingPlanId: string, scheduledDate: Date) {
+  private async createWorkoutSessionFromPlan(userId: string, trainingPlanId: string, scheduledDate: Date, name?: string) {
     const trainingPlan = await this.trainingPlanModel.findOne({
       where: { id: trainingPlanId, userId, deleted: false }
     });
@@ -120,7 +195,7 @@ export class WorkoutsService {
       const workoutSession = await this.workoutSessionModel.create({
         userId,
         trainingPlanId,
-        name: trainingPlan.name || '今日训练',
+        name: name || trainingPlan.name || '今日训练',
         scheduledDate,
         status: 'planned',
       }, { transaction });
@@ -158,14 +233,6 @@ export class WorkoutsService {
         workoutSessionId: workoutSession.id,
       });
 
-      await this.activityLogsService.record({
-        userId,
-        entityType: ActivityEntityType.WORKOUT,
-        action: ActivityActionType.CREATE,
-        entityId: workoutSession.id,
-        changes: workoutSession.toJSON(),
-      });
-
       return this.getWorkoutSessionDetail(userId, workoutSession.id);
     } catch (error) {
       await transaction.rollback();
@@ -177,38 +244,41 @@ export class WorkoutsService {
    * 开始训练会话
    */
   async startWorkoutSession(userId: string, sessionId: string, dto: StartWorkoutDto = {}) {
-    const session = await this.workoutSessionModel.findOne({
+    try {
-      where: { id: sessionId, userId, deleted: false }
-    });
 
-    if (!session) {
+      const session = await this.workoutSessionModel.findOne({
-      throw new NotFoundException('训练会话不存在');
+        where: { id: sessionId, userId, deleted: false }
+      });
+
+      if (!session) {
+        throw new NotFoundException('训练会话不存在');
+      }
+
+      if (session.status !== 'planned') {
+        throw new BadRequestException('只能开始计划中的训练会话');
+      }
+
+      const startTime = dto.startedAt ? new Date(dto.startedAt) : new Date();
+      session.startedAt = startTime;
+      session.status = 'in_progress';
+      await session.save();
+
+      this.winstonLogger.info(`开始训练会话 ${sessionId}`, {
+        context: 'WorkoutsService',
+        userId,
+        sessionId,
+      });
+
+      return session.toJSON();
+    } catch (error) {
+      this.winstonLogger.error(`开始训练会话失败 ${sessionId}`, {
+        context: 'WorkoutsService',
+        userId,
+        sessionId,
+        error,
+      });
+      throw error;
     }
-
-    if (session.status !== 'planned') {
-      throw new BadRequestException('只能开始计划中的训练会话');
-    }
-
-    const startTime = dto.startedAt ? new Date(dto.startedAt) : new Date();
-    session.startedAt = startTime;
-    session.status = 'in_progress';
-    await session.save();
-
-    this.winstonLogger.info(`开始训练会话 ${sessionId}`, {
-      context: 'WorkoutsService',
-      userId,
-      sessionId,
-    });
-
-    await this.activityLogsService.record({
-      userId,
-      entityType: ActivityEntityType.WORKOUT,
-      action: ActivityActionType.UPDATE,
-      entityId: sessionId,
-      changes: { status: { before: 'planned', after: 'in_progress' } },
-    });
-
-    return session.toJSON();
   }
 
   // 注意：训练会话现在自动完成，不需要手动完成方法
@@ -303,19 +373,61 @@ export class WorkoutsService {
       sessionId,
     });
 
-    await this.activityLogsService.record({
-      userId,
-      entityType: ActivityEntityType.WORKOUT,
-      action: ActivityActionType.DELETE,
-      entityId: sessionId,
-      changes: null,
-    });
-
     return { success: true };
   }
 
   // ==================== 训练动作管理 ====================
 
+  /**
+   * 向训练会话添加自定义动作
+   */
+  async addExerciseToSession(userId: string, sessionId: string, dto: CreateWorkoutExerciseDto) {
+    const session = await this.validateWorkoutSession(userId, sessionId);
+
+    if (session.status === 'completed') {
+      throw new BadRequestException('已完成的训练会话无法添加动作');
+    }
+
+    // 如果有exerciseKey，验证动作是否存在
+    if (dto.exerciseKey) {
+      const exercise = await this.exerciseModel.findByPk(dto.exerciseKey);
+      if (!exercise) {
+        throw new NotFoundException(`动作 "${dto.exerciseKey}" 不存在`);
+      }
+    }
+
+    // 获取下一个排序顺序
+    const lastExercise = await this.workoutExerciseModel.findOne({
+      where: { workoutSessionId: sessionId, deleted: false },
+      order: [['sortOrder', 'DESC']],
+    });
+    const sortOrder = lastExercise ? lastExercise.sortOrder + 1 : 1;
+
+    const exercise = await this.workoutExerciseModel.create({
+      workoutSessionId: sessionId,
+      userId,
+      exerciseKey: dto.exerciseKey,
+      name: dto.name,
+      plannedSets: dto.plannedSets,
+      plannedReps: dto.plannedReps,
+      plannedDurationSec: dto.plannedDurationSec,
+      restSec: dto.restSec,
+      note: dto.note || '',
+      itemType: dto.itemType || 'exercise',
+      status: 'pending',
+      sortOrder,
+    });
+
+    this.winstonLogger.info(`向训练会话添加动作 ${exercise.id}`, {
+      context: 'WorkoutsService',
+      userId,
+      sessionId,
+      exerciseId: exercise.id,
+    });
+
+    return exercise.toJSON();
+  }
+
   /**
    * 开始训练动作
    */
@@ -411,29 +523,10 @@ export class WorkoutsService {
   async updateWorkoutExercise(userId: string, sessionId: string, exerciseId: string, dto: UpdateWorkoutExerciseDto) {
     const exercise = await this.validateWorkoutExercise(userId, sessionId, exerciseId);
 
-    const before = exercise.toJSON();
-
     // 更新字段
     Object.assign(exercise, dto);
     await exercise.save();
 
-    const after = exercise.toJSON();
-    const changedKeys = Object.keys(after).filter((key) => (before as any)[key] !== (after as any)[key]);
-    const changes: Record<string, any> = {};
-    for (const key of changedKeys) {
-      changes[key] = { before: (before as any)[key], after: (after as any)[key] };
-    }
-
-    if (Object.keys(changes).length > 0) {
-      await this.activityLogsService.record({
-        userId,
-        entityType: ActivityEntityType.WORKOUT,
-        action: ActivityActionType.UPDATE,
-        entityId: exerciseId,
-        changes,
-      });
-    }
-
     this.winstonLogger.info(`更新训练动作 ${exerciseId}`, {
       context: 'WorkoutsService',
       userId,
@@ -441,7 +534,7 @@ export class WorkoutsService {
       exerciseId,
     });
 
-    return after;
+    return exercise.toJSON();
   }
 
   /**
@@ -575,17 +668,6 @@ export class WorkoutsService {
         sessionId,
         duration: session.totalDurationSec,
       });
-
-      await this.activityLogsService.record({
-        userId,
-        entityType: ActivityEntityType.WORKOUT,
-        action: ActivityActionType.UPDATE,
-        entityId: sessionId,
-        changes: {
-          status: { before: 'in_progress', after: 'completed' },
-          autoCompleted: true
-        },
-      });
     }
   }
 }