ai_v/blueprints/payment.py

from flask import Blueprint, request, redirect, url_for, session, jsonify, render_template
from extensions import db
from models import Order, User, to_bj_time, get_bj_now
from services.alipay_service import AlipayService
from services.logger import system_logger
import uuid
from datetime import datetime, timedelta

payment_bp = Blueprint('payment', __name__, url_prefix='/payment')

# 积分价格配置
POINTS_PACKAGES = {
    '50': {'points': 50, 'amount': 5.00},
    '200': {'points': 200, 'amount': 20.00},
    '1000': {'points': 1000, 'amount': 100.00},
    '5000': {'points': 5000, 'amount': 500.00},
}

@payment_bp.route('/create', methods=['POST'])
def create_payment():
    if 'user_id' not in session:
        return jsonify({'code': 401, 'msg': '请先登录'}), 401
    
    package_id = request.form.get('package_id')
    if package_id not in POINTS_PACKAGES:
        return jsonify({'code': 400, 'msg': '无效的套餐'}), 400
    
    package = POINTS_PACKAGES[package_id]
    user_id = session['user_id']
    
    # 生成唯一订单号 (时间戳 + 随机位)
    out_trade_no = datetime.now().strftime('%Y%m%d%H%M%S') + str(uuid.uuid4().hex[:6])
    
    # 创建订单记录
    try:
        order = Order(
            out_trade_no=out_trade_no,
            user_id=user_id,
            amount=package['amount'],
            points=package['points'],
            status='PENDING'
        )
        db.session.add(order)
        db.session.commit()
        system_logger.info(f"用户创建充值订单", order_id=out_trade_no, amount=package['amount'], points=package['points'])
    except Exception as e:
        db.session.rollback()
        system_logger.error(f"订单创建失败: {str(e)}")
        return f"订单创建失败: {str(e)}", 500
    
    # 获取支付链接
    try:
        alipay_service = AlipayService()
        pay_url = alipay_service.create_order_url(
            out_trade_no=out_trade_no,
            total_amount=package['amount'],
            subject=f"购买{package['points']}积分"
        )
        return redirect(pay_url)
    except Exception as e:
        system_logger.error(f"支付链接生成失败: {str(e)}")
        return f"支付链接生成失败: {str(e)}", 500

@payment_bp.route('/return')
def payment_return():
    """支付成功后的同步跳转页面"""
    try:
        data = request.args.to_dict()
        signature = data.get("sign")
        
        if not signature:
            return "参数错误：缺少签名", 400
        
        alipay_service = AlipayService()
        success = alipay_service.verify_notify(data, signature)
        out_trade_no = data.get('out_trade_no')
        
        if success:
            # 同步回调也进行订单处理，防止异步回调延迟或失败
            out_trade_no = data.get('out_trade_no')
            trade_no = data.get('trade_no')
            
            try:
                # 查询订单 (加锁防止并发导致双重发放)
                order = Order.query.filter_by(out_trade_no=out_trade_no).with_for_update().first()
                
                # 如果订单存在且状态为PENDING，则更新为PAID
                if order and order.status == 'PENDING':
                    order.status = 'PAID'
                    order.trade_no = trade_no
                    order.paid_at = get_bj_now()
                    
                    # 增加用户积分
                    user = db.session.get(User, order.user_id)
                    if user:
                        user.points += order.points
                        system_logger.info(f"同步回调-订单支付成功", order_id=out_trade_no, points=order.points, user_id=user.id)
                    
                    db.session.commit()
                elif order:
                    # 订单已经是完成状态，不做处理
                    pass
                else:
                    system_logger.warning(f"同步回调-未找到订单", order_id=out_trade_no)
                    
            except Exception as e:
                db.session.rollback()
                system_logger.error(f"同步回调-订单状态更新失败: {str(e)}")
            
            return redirect(url_for('auth.buy_page', success='true', out_trade_no=out_trade_no))
        else:
            system_logger.warning(f"支付同步回调验证失败", order_id=out_trade_no)
            return "支付验证失败", 400
            
    except Exception as e:
        system_logger.error(f"处理同步回调异常: {str(e)}")
        return f"处理支付回调失败: {str(e)}", 500

@payment_bp.route('/history', methods=['GET'])
def payment_history():
    """获取当前用户的充值历史记录"""
    if 'user_id' not in session:
        return redirect(url_for('auth.login'))
    
    thirty_min_ago = get_bj_now() - timedelta(minutes=30)
    
    user_id = session['user_id']
    orders = Order.query.filter(
        Order.user_id == user_id,
        db.or_(
            Order.status == 'PAID',
            db.and_(Order.status == 'PENDING', Order.created_at >= thirty_min_ago)
        )
    ).order_by(Order.created_at.desc()).all()
    
    return render_template('recharge_history.html', orders=orders, modules={'datetime': datetime})

@payment_bp.route('/api/history', methods=['GET'])
def api_payment_history():
    """API 获取当前用户的充值历史记录"""
    if 'user_id' not in session:
        return jsonify({'code': 401, 'msg': '请先登录'}), 401
    
    thirty_min_ago = get_bj_now() - timedelta(minutes=30)
    
    user_id = session['user_id']
    orders = Order.query.filter(
        Order.user_id == user_id,
        db.or_(
            Order.status == 'PAID',
            db.and_(Order.status == 'PENDING', Order.created_at >= thirty_min_ago)
        )
    ).order_by(Order.created_at.desc()).all()
    
    return jsonify({
        "orders": [{
            "id": o.id,
            "out_trade_no": o.out_trade_no,
            "amount": float(o.amount),
            "points": o.points,
            "status": o.status,
            "trade_no": o.trade_no,
            "created_at": o.created_at_bj.strftime('%Y-%m-%d %H:%M:%S'),
            "paid_at": o.paid_at_bj.strftime('%Y-%m-%d %H:%M:%S') if o.paid_at else None
        } for o in orders]
    })
@payment_bp.route('/notify', methods=['POST'])
def payment_notify():
    """支付宝异步通知"""
    try:
        data = request.form.to_dict()
        system_logger.info(f"Received Alipay Notify: {data}")
        signature = data.get("sign")
        
        if not signature:
            return "fail"
        
        alipay_service = AlipayService()
        success = alipay_service.verify_notify(data, signature)
        
        if success and data.get('trade_status') in ['TRADE_SUCCESS', 'TRADE_FINISHED']:
            out_trade_no = data.get('out_trade_no')
            trade_no = data.get('trade_no')
            
            # 加锁查询，确保并发安全
            order = Order.query.filter_by(out_trade_no=out_trade_no).with_for_update().first()
            if order and order.status == 'PENDING':
                order.status = 'PAID'
                order.trade_no = trade_no
                order.paid_at = get_bj_now()
                
                user = db.session.get(User, order.user_id)
                if user:
                    user.points += order.points
                    system_logger.info(f"订单支付成功", order_id=out_trade_no, points=order.points, user_id=user.id)
                
                db.session.commit()
                return "success"
            elif order:
                return "success"
            else:
                return "fail"
        else:
            return "fail"
            
    except Exception as e:
        system_logger.error(f"处理异步通知异常: {str(e)}")
        db.session.rollback()
        return "fail"