from flask import request, jsonify, current_app
from app import db
from app.models import Product, License, Ticket, Version
from . import api_bp
from app.utils.logger import log_operation
from app.utils.cors_middleware import handle_preflight, cors_after
import re

# 注册请求和响应处理器
@api_bp.before_request
def before_request():
    """在每个请求前处理"""
    # 处理预检请求
    preflight_response = handle_preflight()
    if preflight_response:
        return preflight_response

@api_bp.after_request
def after_request(response):
    """在每个请求后添加CORS头部"""
    return cors_after(response)

# ==================== 产品相关接口 ====================

@api_bp.route('/user/products', methods=['GET'])
def get_user_products():
    """用户端获取产品列表（无需认证）"""
    try:
        page = request.args.get('page', 1, type=int)
        per_page = min(request.args.get('per_page', 20, type=int), 100)
        keyword = request.args.get('keyword', '').strip()
        product_type = request.args.get('type')  # 产品类型筛选
        is_paid = request.args.get('is_paid', type=int)  # 付费筛选：1=付费，0=免费

        query = Product.query.filter_by(status=1)  # 只显示启用的产品

        # 关键词搜索
        if keyword:
            query = query.filter(
                db.or_(
                    Product.product_name.like(f'%{keyword}%'),
                    Product.description.like(f'%{keyword}%')
                )
            )

        # 产品类型筛选
        if product_type:
            query = query.filter(Product.product_type == product_type)

        query = query.order_by(Product.create_time.desc())
        pagination = query.paginate(page=page, per_page=per_page, error_out=False)

        products = []
        for product in pagination.items:
            product_dict = product.to_dict()
            # 获取最新版本信息
            latest_version = Version.query.filter_by(
                product_id=product.product_id,
                publish_status=1
            ).order_by(Version.create_time.desc()).first()
            
            product_dict['latest_version'] = latest_version.version_num if latest_version else None
            # 移除不存在的is_paid字段
            products.append(product_dict)

        return jsonify({
            'success': True,
            'data': {
                'products': products,
                'pagination': {
                    'page': page,
                    'per_page': per_page,
                    'total': pagination.total,
                    'pages': pagination.pages,
                    'has_prev': pagination.has_prev,
                    'has_next': pagination.has_next
                }
            }
        })

    except Exception as e:
        current_app.logger.error(f"获取产品列表失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误，请稍后重试'
        }), 500


@api_bp.route('/user/products/<product_id>', methods=['GET'])
def get_user_product(product_id):
    """用户端获取产品详情（无需认证）"""
    try:
        product = Product.query.filter_by(product_id=product_id, status=1).first()
        if not product:
            return jsonify({
                'success': False,
                'message': '产品不存在或已下架'
            }), 404

        product_dict = product.to_dict(include_stats=True)
        
        # 获取最新版本信息
        latest_version = Version.query.filter_by(
            product_id=product_id,
            publish_status=1
        ).order_by(Version.create_time.desc()).first()
        
        if latest_version:
            product_dict['latest_version'] = latest_version.version_num
        
        # 获取最近3条更新日志
        recent_versions = Version.query.filter_by(
            product_id=product_id,
            publish_status=1
        ).order_by(Version.create_time.desc()).limit(3).all()
        
        product_dict['recent_updates'] = [
            {
                'version_num': v.version_num,
                'update_time': v.create_time.isoformat(),
                'update_log': v.update_log
            } for v in recent_versions
        ]
        
        # 移除不存在的is_paid字段

        return jsonify({
            'success': True,
            'data': product_dict
        })

    except Exception as e:
        current_app.logger.error(f"获取产品详情失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500


# ==================== 卡密相关接口 ====================

@api_bp.route('/user/licenses/packages', methods=['GET'])
def get_license_packages():
    """用户端获取卡密套餐（按产品筛选，无需认证）"""
    try:
        product_id = request.args.get('product_id')
        if not product_id:
            return jsonify({
                'success': False,
                'message': '缺少产品ID参数'
            }), 400

        # 验证产品是否存在且启用
        product = Product.query.filter_by(product_id=product_id, status=1).first()
        if not product:
            return jsonify({
                'success': False,
                'message': '产品不存在或已下架'
            }), 404

        # 从套餐表获取该产品的套餐信息
        from app.models.package import Package
        
        # 获取启用的套餐
        packages = Package.query.filter_by(
            product_id=product_id,
            status=1
        ).order_by(Package.sort_order).all()
        
        # 转换为字典格式
        package_list = [pkg.to_dict() for pkg in packages]

        return jsonify({
            'success': True,
            'data': {
                'product': product.to_dict(),
                'packages': package_list
            }
        })

    except Exception as e:
        current_app.logger.error(f"获取卡密套餐失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500


@api_bp.route('/user/licenses/verify', methods=['GET'])
def user_verify_license():
    """用户端验证卡密（下载用，无需认证）"""
    try:
        license_key = request.args.get('license_key')
        product_id = request.args.get('product_id')
        
        if not all([license_key, product_id]):
            return jsonify({
                'success': False,
                'message': '缺少必要参数'
            }), 400

        # 查找卡密
        license_obj = License.query.filter_by(
            license_key=license_key,
            product_id=product_id
        ).first()

        if not license_obj:
            return jsonify({
                'success': False,
                'message': '卡密不存在'
            }), 404

        # 检查卡密状态
        if license_obj.status != 1:
            return jsonify({
                'success': False,
                'message': '卡密未激活或已失效'
            }), 403

        # 检查是否过期
        if license_obj.is_expired():
            return jsonify({
                'success': False,
                'message': '卡密已过期'
            }), 403

        # 获取产品信息
        product = Product.query.filter_by(product_id=product_id, status=1).first()
        if not product:
            return jsonify({
                'success': False,
                'message': '产品不存在或已下架'
            }), 404

        # 获取下载链接（从最新版本获取）
        latest_version = Version.query.filter_by(
            product_id=product_id,
            publish_status=1
        ).order_by(Version.create_time.desc()).first()

        return jsonify({
            'success': True,
            'message': '卡密验证成功',
            'data': {
                'license_key': license_obj.license_key,
                'product_name': product.product_name,
                'expire_time': license_obj.expire_time.isoformat() if license_obj.expire_time else None,
                'download_url': latest_version.download_url if latest_version else None,
                'can_download': True
            }
        })

    except Exception as e:
        current_app.logger.error(f"卡密验证失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500


# ==================== 工单相关接口 ====================

@api_bp.route('/user/tickets', methods=['POST'])
def create_user_ticket():
    """用户端创建工单（无需认证）"""
    try:
        data = request.get_json()
        if not data:
            return jsonify({'success': False, 'message': '请求数据为空'}), 400

        product_id = data.get('product_id')
        contact_person = data.get('contact_person', '').strip()
        phone = data.get('phone', '').strip()
        title = data.get('title', '').strip()
        description = data.get('description', '').strip()
        attachment = data.get('attachment')  # 附件信息

        # 验证必填字段
        if not all([product_id, contact_person, phone, title, description]):
            return jsonify({'success': False, 'message': '缺少必要参数'}), 400

        # 验证手机号格式
        if not phone or not re.match(r'^1[3-9]\d{9}$', phone):
            return jsonify({'success': False, 'message': '手机号格式不正确'}), 400

        # 验证产品存在且启用
        product = Product.query.filter_by(product_id=product_id, status=1).first()
        if not product:
            return jsonify({'success': False, 'message': '产品不存在或已下架'}), 404

        ticket = Ticket(
            title=title,
            product_id=product_id,
            description=description,
            contact_person=contact_person,
            phone=phone,
            attachment=attachment,
            priority=data.get('priority', 1),
            source=1  # 用户提交的工单
        )

        db.session.add(ticket)
        db.session.commit()

        # 记录操作日志
        log_operation('CREATE_USER_TICKET', 'TICKET', ticket.ticket_id, {
            'title': ticket.title,
            'product_id': ticket.product_id,
            'contact_person': contact_person,
            'phone': phone
        })

        return jsonify({
            'success': True,
            'message': '工单提交成功',
            'data': {
                'ticket_id': ticket.ticket_id,
                'ticket_number': ticket.ticket_number
            }
        })

    except Exception as e:
        db.session.rollback()
        current_app.logger.error(f"创建工单失败: {str(e)}")
        return jsonify({'success': False, 'message': '服务器内部错误'}), 500


@api_bp.route('/user/tickets', methods=['GET'])
def get_user_tickets():
    """用户端获取工单列表（通过手机号查询，无需认证）"""
    try:
        phone = request.args.get('phone')
        
        if not phone:
            return jsonify({
                'success': False,
                'message': '缺少手机号参数'
            }), 400

        # 验证手机号格式
        if not re.match(r'^1[3-9]\d{9}$', phone):
            return jsonify({
                'success': False,
                'message': '手机号格式不正确'
            }), 400

        # 查询该手机号提交的工单
        tickets = Ticket.query.filter_by(phone=phone).order_by(Ticket.create_time.desc()).all()
        
        return jsonify({
            'success': True,
            'data': [ticket.to_dict() for ticket in tickets]
        })

    except Exception as e:
        current_app.logger.error(f"获取工单列表失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500


@api_bp.route('/user/tickets/query', methods=['GET'])
def query_user_ticket():
    """用户端查询工单（通过工单编号+手机号，无需认证）"""
    try:
        ticket_number = request.args.get('ticket_number')
        phone = request.args.get('phone')
        
        if not all([ticket_number, phone]):
            return jsonify({
                'success': False,
                'message': '缺少必要参数'
            }), 400

        # 验证手机号格式
        if not phone or not re.match(r'^1[3-9]\d{9}$', phone):
            return jsonify({
                'success': False,
                'message': '手机号格式不正确'
            }), 400

        # 查找工单
        ticket = Ticket.query.filter_by(
            ticket_number=ticket_number,
            phone=phone
        ).first()

        if not ticket:
            return jsonify({
                'success': False,
                'message': '工单不存在或手机号不匹配'
            }), 404

        return jsonify({
            'success': True,
            'data': ticket.to_dict()
        })

    except Exception as e:
        current_app.logger.error(f"查询工单失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500


# ==================== 订单相关接口 ====================

@api_bp.route('/user/orders', methods=['POST'])
def create_user_order():
    """用户端创建订单（无需认证）"""
    try:
        data = request.get_json()
        if not data:
            return jsonify({
                'success': False,
                'message': '请求数据为空'
            }), 400

        product_id = data.get('product_id')
        package_id = data.get('package_id')
        contact_person = data.get('contact_person', '').strip()
        phone = data.get('phone', '').strip()
        quantity = data.get('quantity', 1)

        # 验证必填字段
        if not all([product_id, package_id, contact_person, phone]):
            return jsonify({
                'success': False,
                'message': '缺少必要参数'
            }), 400

        # 验证手机号格式
        if not phone or not re.match(r'^1[3-9]\d{9}$', phone):
            return jsonify({
                'success': False,
                'message': '手机号格式不正确'
            }), 400

        # 验证数量
        if not isinstance(quantity, int) or quantity < 1 or quantity > 5:
            return jsonify({
                'success': False,
                'message': '购买数量必须在1-5之间'
            }), 400

        # 验证产品存在且启用
        product = Product.query.filter_by(product_id=product_id, status=1).first()
        if not product:
            return jsonify({
                'success': False,
                'message': '产品不存在或已下架'
            }), 404

        # 生成订单号（简化处理，实际应有更复杂的订单号生成规则）
        import time
        import random
        order_number = f"ORD{int(time.time())}{random.randint(100, 999)}"

        # 简化处理：直接返回支付链接（实际应对接支付系统）
        # 这里模拟支付链接生成
        payment_url = f"/payment?order_number={order_number}&amount=0.01"  # 示例金额

        # 记录操作日志
        log_operation('CREATE_USER_ORDER', 'ORDER', None, {
            'order_number': order_number,
            'product_id': product_id,
            'package_id': package_id,
            'contact_person': contact_person,
            'phone': phone,
            'quantity': quantity
        })

        return jsonify({
            'success': True,
            'message': '订单创建成功',
            'data': {
                'order_number': order_number,
                'payment_url': payment_url,
                'amount': 0.01  # 示例金额
            }
        })

    except Exception as e:
        current_app.logger.error(f"创建订单失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500


@api_bp.route('/user/orders/query', methods=['GET'])
def query_user_order():
    """用户端查询订单（通过手机号+订单号，无需认证）"""
    try:
        order_number = request.args.get('order_number')
        phone = request.args.get('phone')
        
        if not all([order_number, phone]):
            return jsonify({
                'success': False,
                'message': '缺少必要参数'
            }), 400

        # 验证手机号格式
        if not phone or not re.match(r'^1[3-9]\d{9}$', phone):
            return jsonify({
                'success': False,
                'message': '手机号格式不正确'
            }), 400

        # 这里简化处理，实际应查询订单表
        # 模拟返回订单信息
        order_info = {
            'order_number': order_number,
            'status': 1,  # 1=已支付
            'status_name': '已支付',
            'amount': 0.01,
            'created_time': '2023-01-01T00:00:00',
            'payment_time': '2023-01-01T00:05:00'
        }

        return jsonify({
            'success': True,
            'data': order_info
        })

    except Exception as e:
        current_app.logger.error(f"查询订单失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500


# ==================== 下载相关接口 ====================

@api_bp.route('/user/downloads/check', methods=['GET'])
def check_download_permission():
    """用户端检查下载权限（无需认证）"""
    try:
        product_id = request.args.get('product_id')
        
        if not product_id:
            return jsonify({
                'success': False,
                'message': '缺少产品ID参数'
            }), 400

        # 验证产品存在且启用
        product = Product.query.filter_by(product_id=product_id, status=1).first()
        if not product:
            return jsonify({
                'success': False,
                'message': '产品不存在或已下架'
            }), 404

        # 获取产品是否为付费产品
        is_paid = getattr(product, 'is_paid', False)

        # 获取最新版本信息
        latest_version = Version.query.filter_by(
            product_id=product_id,
            publish_status=1
        ).order_by(Version.create_time.desc()).first()

        return jsonify({
            'success': True,
            'data': {
                'product_id': product_id,
                'product_name': product.product_name,
                'is_paid': is_paid,
                'latest_version': latest_version.version_num if latest_version else None,
                'download_url': latest_version.download_url if latest_version else None
            }
        })

    except Exception as e:
        current_app.logger.error(f"检查下载权限失败: {str(e)}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500