#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
支付宝支付配置文件
电脑网站支付 (alipay.trade.page.pay)
"""
import os

# 获取当前文件所在目录
_BASE_DIR = os.path.dirname(os.path.abspath(__file__))

# 支付宝支付配置
ALIPAY_CONFIG = {
    # 应用ID - 从支付宝开放平台获取
    'app_id': '2021005183650009',

    # 支付宝网关 - 正式环境
    'gateway_url': 'https://openapi.alipay.com/gateway.do',
    # 沙箱环境网关（测试用）
    # 'gateway_url': 'https://openapi-sandbox.dl.alipaydev.com/gateway.do',

    # 签名方式 - 必须使用RSA2
    'sign_type': 'RSA2',

    # 编码格式
    'charset': 'utf-8',

    # 返回格式
    'format': 'json',

    # 密钥文件路径
    'app_private_key_path': os.path.join(_BASE_DIR, 'alipay', '应用私钥.txt'),
    'alipay_public_key_path': os.path.join(_BASE_DIR, 'alipay', '支付宝公钥.txt'),

    # 回调地址 - 替换为你的实际域名
    'notify_url': 'https://api.valuefrontier.cn/api/payment/alipay/callback',  # 异步通知地址（后端）
    'return_url': 'https://valuefrontier.cn/pricing?payment_return=alipay',  # 同步跳转地址（前端页面）

    # 产品码 - 电脑网站支付固定为此值
    'product_code': 'FAST_INSTANT_TRADE_PAY',
}


def load_key_from_file(file_path):
    """从文件读取密钥内容"""
    import sys
    try:
        with open(file_path, 'r', encoding='utf-8') as f:
            return f.read().strip()
    except FileNotFoundError:
        print(f"[AlipayConfig] Key file not found: {file_path}", file=sys.stderr)
        return None
    except Exception as e:
        print(f"[AlipayConfig] Read key file failed: {e}", file=sys.stderr)
        return None


def get_app_private_key():
    """获取应用私钥"""
    return load_key_from_file(ALIPAY_CONFIG['app_private_key_path'])


def get_alipay_public_key():
    """获取支付宝公钥"""
    return load_key_from_file(ALIPAY_CONFIG['alipay_public_key_path'])


def validate_config():
    """验证配置是否完整"""
    issues = []

    # 检查 app_id
    if not ALIPAY_CONFIG.get('app_id') or ALIPAY_CONFIG['app_id'].startswith('your_'):
        issues.append("app_id not configured")

    # 检查密钥文件
    if not os.path.exists(ALIPAY_CONFIG['app_private_key_path']):
        issues.append(f"Private key file not found: {ALIPAY_CONFIG['app_private_key_path']}")
    else:
        key = get_app_private_key()
        if not key or len(key) < 100:
            issues.append("Private key content invalid")

    if not os.path.exists(ALIPAY_CONFIG['alipay_public_key_path']):
        issues.append(f"Alipay public key file not found: {ALIPAY_CONFIG['alipay_public_key_path']}")
    else:
        key = get_alipay_public_key()
        if not key or len(key) < 100:
            issues.append("Alipay public key content invalid")

    return len(issues) == 0, issues


if __name__ == "__main__":
    print("Alipay Payment Config Validation")
    print("=" * 50)

    is_valid, issues = validate_config()

    if is_valid:
        print("[OK] Config validation passed!")
        print(f"   App ID: {ALIPAY_CONFIG['app_id']}")
        print(f"   Gateway: {ALIPAY_CONFIG['gateway_url']}")
        print(f"   Notify URL: {ALIPAY_CONFIG['notify_url']}")
        print(f"   Return URL: {ALIPAY_CONFIG['return_url']}")
    else:
        print("[ERROR] Config has issues:")
        for issue in issues:
            print(f"  - {issue}")

        print("\nSetup steps:")
        print("1. Login to Alipay Open Platform (open.alipay.com)")
        print("2. Create app and get App ID")
        print("3. Configure RSA2 keys in development settings")
        print("4. Put private key and Alipay public key in ./alipay/ folder")
        print("5. Update config in this file")

    print("=" * 50)