630 lines
20 KiB
Python
630 lines
20 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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平衡体态检测系统 - 后端服务
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基于Flask的本地API服务
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"""
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import os
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import sys
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import json
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import time
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import threading
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from datetime import datetime
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from flask import Flask, request, jsonify, send_file
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from flask_cors import CORS
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import sqlite3
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import logging
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from pathlib import Path
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# 添加当前目录到Python路径
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sys.path.append(os.path.dirname(os.path.abspath(__file__)))
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# 导入自定义模块
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from database import DatabaseManager
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from device_manager import DeviceManager
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from detection_engine import DetectionEngine
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from data_processor import DataProcessor
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# 配置日志
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logging.basicConfig(
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level=logging.INFO,
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format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
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handlers=[
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logging.FileHandler('logs/backend.log', encoding='utf-8'),
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logging.StreamHandler()
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]
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)
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logger = logging.getLogger(__name__)
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# 创建Flask应用
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app = Flask(__name__)
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app.config['SECRET_KEY'] = 'body-balance-detection-system-2024'
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# 启用CORS支持
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CORS(app, origins=['http://localhost:3000', 'http://localhost:3001', 'file://*'])
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# 全局变量
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db_manager = None
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device_manager = None
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detection_engine = None
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data_processor = None
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current_detection = None
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detection_thread = None
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def init_app():
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"""初始化应用"""
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global db_manager, device_manager, detection_engine, data_processor
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try:
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# 创建必要的目录
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os.makedirs('logs', exist_ok=True)
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os.makedirs('data', exist_ok=True)
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os.makedirs('exports', exist_ok=True)
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os.makedirs('videos', exist_ok=True)
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# 初始化数据库
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db_manager = DatabaseManager('data/body_balance.db')
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db_manager.init_database()
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# 初始化设备管理器
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device_manager = DeviceManager()
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# 初始化检测引擎
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detection_engine = DetectionEngine()
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# 初始化数据处理器
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data_processor = DataProcessor()
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logger.info('应用初始化完成')
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except Exception as e:
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logger.error(f'应用初始化失败: {e}')
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raise
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# ==================== 基础API ====================
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@app.route('/health', methods=['GET'])
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def health_check():
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"""健康检查"""
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return jsonify({
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'status': 'ok',
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'timestamp': datetime.now().isoformat(),
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'version': '1.0.0'
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})
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@app.route('/api/health', methods=['GET'])
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def api_health_check():
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"""API健康检查"""
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return jsonify({
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'status': 'ok',
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'timestamp': datetime.now().isoformat(),
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'version': '1.0.0'
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})
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# ==================== 认证API ====================
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@app.route('/api/auth/login', methods=['POST'])
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def login():
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"""用户登录"""
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try:
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data = request.get_json()
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username = data.get('username')
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password = data.get('password')
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remember = data.get('remember', False)
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# 简单的模拟登录验证
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if username and password:
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# 这里可以添加真实的用户验证逻辑
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# 目前使用模拟数据
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user_data = {
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'id': 1,
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'username': username,
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'name': '医生',
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'role': 'doctor',
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'avatar': ''
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}
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# 生成简单的token（实际项目中应使用JWT等安全token）
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token = f"token_{username}_{int(time.time())}"
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return jsonify({
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'success': True,
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'data': {
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'token': token,
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'user': user_data
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},
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'message': '登录成功'
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})
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else:
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return jsonify({
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'success': False,
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'message': '用户名或密码不能为空'
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}), 400
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except Exception as e:
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logger.error(f'登录失败: {e}')
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return jsonify({'success': False, 'message': '登录失败'}), 500
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@app.route('/api/auth/register', methods=['POST'])
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def register():
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"""用户注册"""
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try:
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data = request.get_json()
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username = data.get('username')
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password = data.get('password')
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email = data.get('email')
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# 简单的模拟注册
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if username and password:
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return jsonify({
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'success': True,
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'message': '注册成功，请登录'
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})
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else:
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return jsonify({
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'success': False,
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'message': '用户名和密码不能为空'
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}), 400
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except Exception as e:
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logger.error(f'注册失败: {e}')
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return jsonify({'success': False, 'message': '注册失败'}), 500
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@app.route('/api/auth/logout', methods=['POST'])
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def logout():
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"""用户退出"""
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try:
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return jsonify({
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'success': True,
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'message': '退出成功'
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})
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except Exception as e:
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logger.error(f'退出失败: {e}')
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return jsonify({'success': False, 'message': '退出失败'}), 500
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@app.route('/api/auth/verify', methods=['GET'])
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def verify_token():
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"""验证token"""
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try:
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# 简单的token验证（实际项目中应验证JWT等）
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auth_header = request.headers.get('Authorization')
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if auth_header and auth_header.startswith('Bearer '):
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token = auth_header.split(' ')[1]
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# 这里可以添加真实的token验证逻辑
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return jsonify({
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'success': True,
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'data': {'valid': True}
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})
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else:
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return jsonify({
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'success': True,
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'data': {'valid': True} # 暂时总是返回有效
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})
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except Exception as e:
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logger.error(f'验证token失败: {e}')
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return jsonify({'success': False, 'message': '验证失败'}), 500
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@app.route('/api/auth/forgot-password', methods=['POST'])
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def forgot_password():
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"""忘记密码"""
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try:
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data = request.get_json()
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email = data.get('email')
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if email:
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return jsonify({
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'success': True,
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'message': '重置密码邮件已发送'
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})
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else:
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return jsonify({
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'success': False,
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'message': '邮箱不能为空'
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}), 400
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except Exception as e:
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logger.error(f'忘记密码处理失败: {e}')
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return jsonify({'success': False, 'message': '处理失败'}), 500
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@app.route('/api/auth/reset-password', methods=['POST'])
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def reset_password():
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"""重置密码"""
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try:
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data = request.get_json()
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token = data.get('token')
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password = data.get('password')
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if token and password:
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return jsonify({
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'success': True,
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'message': '密码重置成功'
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})
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else:
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return jsonify({
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'success': False,
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'message': '参数不完整'
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}), 400
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except Exception as e:
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logger.error(f'重置密码失败: {e}')
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return jsonify({'success': False, 'message': '重置失败'}), 500
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@app.route('/api/system/info', methods=['GET'])
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def get_system_info():
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"""获取系统信息"""
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try:
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info = {
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'version': '1.0.0',
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'start_time': datetime.now().isoformat(),
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'database_status': 'connected' if db_manager else 'disconnected',
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'device_count': len(device_manager.get_connected_devices()) if device_manager else 0
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}
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return jsonify({'success': True, 'data': info})
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except Exception as e:
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logger.error(f'获取系统信息失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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# ==================== 设备管理API ====================
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@app.route('/api/devices/status', methods=['GET'])
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def get_device_status():
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"""获取设备状态"""
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try:
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if not device_manager:
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return jsonify({'camera': False, 'imu': False, 'pressure': False})
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status = device_manager.get_device_status()
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return jsonify(status)
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except Exception as e:
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logger.error(f'获取设备状态失败: {e}')
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return jsonify({'camera': False, 'imu': False, 'pressure': False})
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@app.route('/api/devices/refresh', methods=['POST'])
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def refresh_devices():
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"""刷新设备连接"""
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try:
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if device_manager:
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device_manager.refresh_devices()
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return jsonify({'success': True, 'message': '设备已刷新'})
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except Exception as e:
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logger.error(f'刷新设备失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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@app.route('/api/devices/calibrate', methods=['POST'])
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def calibrate_devices():
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"""校准设备"""
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try:
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if device_manager:
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result = device_manager.calibrate_devices()
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return jsonify({'success': True, 'data': result})
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return jsonify({'success': False, 'error': '设备管理器未初始化'}), 500
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except Exception as e:
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logger.error(f'设备校准失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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# ==================== 患者管理API ====================
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@app.route('/api/patients', methods=['GET'])
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def get_patients():
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"""获取患者列表"""
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try:
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page = int(request.args.get('page', 1))
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size = int(request.args.get('size', 10))
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keyword = request.args.get('keyword', '')
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patients = db_manager.get_patients(page, size, keyword)
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total = db_manager.get_patients_count(keyword)
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return jsonify({
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'success': True,
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'data': {
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'patients': patients,
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'total': total,
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'page': page,
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'size': size
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}
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})
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except Exception as e:
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logger.error(f'获取患者列表失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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@app.route('/api/patients', methods=['POST'])
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def create_patient():
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"""创建患者"""
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try:
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data = request.get_json()
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patient_id = db_manager.create_patient(data)
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return jsonify({
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'success': True,
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'data': {'patient_id': patient_id},
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'message': '患者创建成功'
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})
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except Exception as e:
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logger.error(f'创建患者失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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@app.route('/api/patients/<patient_id>', methods=['PUT'])
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def update_patient(patient_id):
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"""更新患者信息"""
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try:
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data = request.get_json()
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db_manager.update_patient(patient_id, data)
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return jsonify({'success': True, 'message': '患者信息更新成功'})
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except Exception as e:
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logger.error(f'更新患者信息失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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@app.route('/api/patients/<patient_id>', methods=['DELETE'])
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def delete_patient(patient_id):
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"""删除患者"""
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try:
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db_manager.delete_patient(patient_id)
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return jsonify({'success': True, 'message': '患者删除成功'})
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except Exception as e:
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logger.error(f'删除患者失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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# ==================== 检测管理API ====================
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@app.route('/api/detection/start', methods=['POST'])
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def start_detection():
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"""开始检测"""
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global current_detection, detection_thread
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try:
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if current_detection and current_detection.get('status') == 'running':
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return jsonify({'success': False, 'error': '检测已在进行中'}), 400
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data = request.get_json()
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patient_id = data.get('patientId')
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settings = data.get('settings', {})
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# 创建检测会话
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session_id = db_manager.create_detection_session(patient_id, settings)
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# 初始化检测状态
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current_detection = {
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'session_id': session_id,
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'patient_id': patient_id,
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'status': 'running',
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'start_time': datetime.now(),
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'settings': settings,
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'data_points': 0
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}
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# 启动检测线程
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detection_thread = threading.Thread(
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target=run_detection,
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args=(session_id, settings)
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)
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detection_thread.start()
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return jsonify({
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'success': True,
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'data': {'session_id': session_id},
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'message': '检测已开始'
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})
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except Exception as e:
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logger.error(f'开始检测失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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@app.route('/api/detection/stop', methods=['POST'])
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def stop_detection():
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"""停止检测"""
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global current_detection
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try:
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if not current_detection or current_detection.get('status') != 'running':
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return jsonify({'success': False, 'error': '没有正在进行的检测'}), 400
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# 更新检测状态
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current_detection['status'] = 'stopped'
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current_detection['end_time'] = datetime.now()
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# 等待检测线程结束
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if detection_thread and detection_thread.is_alive():
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detection_thread.join(timeout=5)
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return jsonify({'success': True, 'message': '检测已停止'})
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except Exception as e:
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logger.error(f'停止检测失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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@app.route('/api/detection/status', methods=['GET'])
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def get_detection_status():
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"""获取检测状态"""
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try:
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if not current_detection:
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return jsonify({
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'success': True,
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'data': {'status': 'idle'}
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})
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# 计算运行时间
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if current_detection.get('status') == 'running':
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elapsed = (datetime.now() - current_detection['start_time']).total_seconds()
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current_detection['elapsed_time'] = int(elapsed)
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return jsonify({
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'success': True,
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'data': current_detection
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})
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except Exception as e:
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logger.error(f'获取检测状态失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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@app.route('/api/detection/data', methods=['GET'])
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def get_realtime_data():
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"""获取实时检测数据"""
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try:
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if not current_detection or current_detection.get('status') != 'running':
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return jsonify({'success': False, 'error': '没有正在进行的检测'})
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# 获取最新的检测数据
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session_id = current_detection['session_id']
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data = detection_engine.get_latest_data(session_id)
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return jsonify({
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'success': True,
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'data': data
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})
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except Exception as e:
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logger.error(f'获取实时数据失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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# ==================== 数据分析API ====================
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@app.route('/api/analysis/session/<session_id>', methods=['GET'])
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def analyze_session(session_id):
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"""分析检测会话数据"""
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try:
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# 获取会话数据
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session_data = db_manager.get_session_data(session_id)
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if not session_data:
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return jsonify({'success': False, 'error': '会话不存在'}), 404
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# 进行数据分析
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analysis_result = data_processor.analyze_session(session_data)
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# 保存分析结果
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db_manager.save_analysis_result(session_id, analysis_result)
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return jsonify({
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'success': True,
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'data': analysis_result
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})
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except Exception as e:
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logger.error(f'分析会话数据失败: {e}')
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return jsonify({'success': False, 'error': str(e)}), 500
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@app.route('/api/export/report/<session_id>', methods=['GET'])
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def export_report(session_id):
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"""导出检测报告"""
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try:
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# 生成报告
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report_path = data_processor.generate_report(session_id)
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||
|
||
if not os.path.exists(report_path):
|
||
return jsonify({'success': False, 'error': '报告生成失败'}), 500
|
||
|
||
return send_file(
|
||
report_path,
|
||
as_attachment=True,
|
||
download_name=f'detection_report_{session_id}.pdf'
|
||
)
|
||
|
||
except Exception as e:
|
||
logger.error(f'导出报告失败: {e}')
|
||
return jsonify({'success': False, 'error': str(e)}), 500
|
||
|
||
# ==================== 历史记录API ====================
|
||
|
||
@app.route('/api/history/sessions', methods=['GET'])
|
||
def get_detection_sessions():
|
||
"""获取检测会话历史"""
|
||
try:
|
||
page = int(request.args.get('page', 1))
|
||
size = int(request.args.get('size', 10))
|
||
patient_id = request.args.get('patient_id')
|
||
|
||
sessions = db_manager.get_detection_sessions(page, size, patient_id)
|
||
total = db_manager.get_sessions_count(patient_id)
|
||
|
||
return jsonify({
|
||
'success': True,
|
||
'data': {
|
||
'sessions': sessions,
|
||
'total': total,
|
||
'page': page,
|
||
'size': size
|
||
}
|
||
})
|
||
|
||
except Exception as e:
|
||
logger.error(f'获取检测历史失败: {e}')
|
||
return jsonify({'success': False, 'error': str(e)}), 500
|
||
|
||
def run_detection(session_id, settings):
|
||
"""运行检测的后台线程"""
|
||
global current_detection
|
||
|
||
try:
|
||
logger.info(f'开始检测会话: {session_id}')
|
||
|
||
# 检测循环
|
||
while (current_detection and
|
||
current_detection.get('status') == 'running'):
|
||
|
||
# 采集数据
|
||
if device_manager:
|
||
data = device_manager.collect_data()
|
||
if data:
|
||
# 保存数据到数据库
|
||
db_manager.save_detection_data(session_id, data)
|
||
current_detection['data_points'] += 1
|
||
|
||
# 根据采样频率控制循环间隔
|
||
frequency = settings.get('frequency', 60)
|
||
time.sleep(1.0 / frequency)
|
||
|
||
# 检查是否达到设定时长
|
||
duration = settings.get('duration', 0)
|
||
if duration > 0:
|
||
elapsed = (datetime.now() - current_detection['start_time']).total_seconds()
|
||
if elapsed >= duration:
|
||
current_detection['status'] = 'completed'
|
||
break
|
||
|
||
# 更新会话状态
|
||
if current_detection:
|
||
db_manager.update_session_status(
|
||
session_id,
|
||
current_detection['status'],
|
||
current_detection.get('data_points', 0)
|
||
)
|
||
|
||
logger.info(f'检测会话完成: {session_id}')
|
||
|
||
except Exception as e:
|
||
logger.error(f'检测线程异常: {e}')
|
||
if current_detection:
|
||
current_detection['status'] = 'error'
|
||
current_detection['error'] = str(e)
|
||
|
||
# ==================== 错误处理 ====================
|
||
|
||
@app.errorhandler(404)
|
||
def not_found(error):
|
||
return jsonify({'success': False, 'error': 'API接口不存在'}), 404
|
||
|
||
@app.errorhandler(500)
|
||
def internal_error(error):
|
||
return jsonify({'success': False, 'error': '服务器内部错误'}), 500
|
||
|
||
if __name__ == '__main__':
|
||
try:
|
||
# 初始化应用
|
||
init_app()
|
||
|
||
# 启动Flask服务
|
||
logger.info('启动后端服务...')
|
||
app.run(
|
||
host='127.0.0.1',
|
||
port=5000,
|
||
debug=False,
|
||
threaded=True
|
||
)
|
||
|
||
except KeyboardInterrupt:
|
||
logger.info('服务被用户中断')
|
||
except Exception as e:
|
||
logger.error(f'服务启动失败: {e}')
|
||
sys.exit(1)
|
||
finally:
|
||
logger.info('后端服务已停止') |