from flask import request, jsonify, current_app
from app import db
from app.models import Package, Product
from . import api_bp
from .decorators import require_login, require_admin
import traceback

@api_bp.route('/packages', methods=['GET'])
@require_login
def get_packages():
    """获取套餐列表"""
    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
        product = Product.query.filter_by(product_id=product_id).first()
        if not product:
            return jsonify({
                'success': False,
                'message': '产品不存在'
            }), 404

        # 获取套餐列表
        packages = Package.query.filter_by(product_id=product_id).order_by(Package.sort_order).all()
        package_list = [pkg.to_dict() for pkg in packages]

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

    except Exception as e:
        current_app.logger.error(f"获取套餐列表失败: {str(e)}")
        current_app.logger.error(f"错误堆栈: {traceback.format_exc()}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500

@api_bp.route('/packages', methods=['POST'])
@require_login
def create_package():
    """创建套餐"""
    try:
        data = request.get_json()
        if not data:
            return jsonify({
                'success': False,
                'message': '请求数据为空'
            }), 400

        # 验证必填字段
        required_fields = ['product_id', 'name', 'price', 'duration']
        for field in required_fields:
            if field not in data or not data[field]:
                return jsonify({
                    'success': False,
                    'message': f'缺少必要参数: {field}'
                }), 400

        # 验证产品是否存在
        product = Product.query.filter_by(product_id=data['product_id']).first()
        if not product:
            return jsonify({
                'success': False,
                'message': '产品不存在'
            }), 404

        # 创建套餐
        package = Package(
            product_id=data['product_id'],
            name=data['name'],
            description=data.get('description', ''),
            price=float(data['price']),
            duration=int(data['duration']),
            max_devices=int(data.get('max_devices', 1)),
            stock=int(data.get('stock', -1)),
            sort_order=int(data.get('sort_order', 0)),
            status=int(data.get('status', 1))
        )

        db.session.add(package)
        db.session.commit()

        return jsonify({
            'success': True,
            'message': '套餐创建成功',
            'data': package.to_dict()
        })

    except Exception as e:
        db.session.rollback()
        current_app.logger.error(f"创建套餐失败: {str(e)}")
        current_app.logger.error(f"错误堆栈: {traceback.format_exc()}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500

@api_bp.route('/packages/<package_id>', methods=['GET'])
@require_login
def get_package(package_id):
    """获取套餐详情"""
    try:
        package = Package.query.filter_by(package_id=package_id).first()
        if not package:
            return jsonify({
                'success': False,
                'message': '套餐不存在'
            }), 404

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

    except Exception as e:
        current_app.logger.error(f"获取套餐详情失败: {str(e)}")
        current_app.logger.error(f"错误堆栈: {traceback.format_exc()}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500

@api_bp.route('/packages/<package_id>', methods=['PUT'])
@require_login
def update_package(package_id):
    """更新套餐"""
    try:
        package = Package.query.filter_by(package_id=package_id).first()
        if not package:
            return jsonify({
                'success': False,
                'message': '套餐不存在'
            }), 404

        data = request.get_json()
        if not data:
            return jsonify({
                'success': False,
                'message': '请求数据为空'
            }), 400

        # 更新字段
        if 'name' in data:
            package.name = data['name']
        if 'description' in data:
            package.description = data['description']
        if 'price' in data:
            package.price = float(data['price'])
        if 'duration' in data:
            package.duration = int(data['duration'])
        if 'max_devices' in data:
            package.max_devices = int(data['max_devices'])
        if 'stock' in data:
            package.stock = int(data['stock'])
        if 'sort_order' in data:
            package.sort_order = int(data['sort_order'])
        if 'status' in data:
            package.status = int(data['status'])

        db.session.commit()

        return jsonify({
            'success': True,
            'message': '套餐更新成功',
            'data': package.to_dict()
        })

    except Exception as e:
        db.session.rollback()
        current_app.logger.error(f"更新套餐失败: {str(e)}")
        current_app.logger.error(f"错误堆栈: {traceback.format_exc()}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500

@api_bp.route('/packages/<package_id>', methods=['DELETE'])
@require_login
def delete_package(package_id):
    """删除套餐"""
    try:
        package = Package.query.filter_by(package_id=package_id).first()
        if not package:
            return jsonify({
                'success': False,
                'message': '套餐不存在'
            }), 404

        db.session.delete(package)
        db.session.commit()

        return jsonify({
            'success': True,
            'message': '套餐删除成功'
        })

    except Exception as e:
        db.session.rollback()
        current_app.logger.error(f"删除套餐失败: {str(e)}")
        current_app.logger.error(f"错误堆栈: {traceback.format_exc()}")
        return jsonify({
            'success': False,
            'message': '服务器内部错误'
        }), 500