import os
import subprocess
import sys

from flask import Flask, request, jsonify, make_response
from flask_cors import CORS

from config import get_config
from services.order import OrderService
from services.user import UserService
from utils.datetime import parse_time_string, to_milliseconds

app = Flask('app')
CORS(app, resources={r"/*": {"origins": "http://localhost:8080"}})
config = get_config()
config.order.lifetime = to_milliseconds(**parse_time_string(config.order.lifetime))
order_service = OrderService(config)
user_service = UserService(config)


@app.after_request
def add_cors_headers(response):
    response.headers['Access-Control-Allow-Origin'] = 'http://127.0.0.1:8080'  # 具体的来源
    # response.headers['Access-Control-Allow-Credentials'] = 'true'  # 如果需要凭据支持
    response.headers['Access-Control-Allow-Methods'] = 'GET, POST, OPTIONS'
    response.headers['Access-Control-Allow-Headers'] = 'Content-Type, Authorization'
    return response


@app.route('/createOrder', methods=['POST'])
def create_order():
    data = request.get_json()
    payment_method = data.get('paymentMethod', None)
    if payment_method not in config['PaymentAddresses']:
        return jsonify({
            "message": "wrong payment method"
        }), 400
    quant = int(data.get('amount', 0))
    if quant < config.order.get_int("min_quant"):
        return jsonify({
            "message": "Amount below minimum limit."
        }), 400

    wallet_address = data.get('wallet_address', None)
    if wallet_address is None:
        name = data.get('name', None)
        phone = data.get('phone', None)
        email = data.get('email', None)
        wallet_addresses = user_service.get_wallet_addresses(name, phone, email)

        if not wallet_addresses:
            return jsonify({
                "message": "empty wallet address"
            }), 400
        if len(wallet_addresses) > 1:
            return jsonify({
                "message": "Please select an address to place your order.",
                "wallet_addresses": wallet_addresses
            }), 200
        # 单个地址
        wallet_address = wallet_addresses[0]

    order_id, create_timestamp = order_service.create_order(quant, wallet_address)

    return jsonify({"orderID": order_id,
                    "amount": quant,
                    "orderCreateTimestamp": create_timestamp,
                    "orderExpirationTime": config.order.lifetime}), 200


order_status = config.order.order_status


@app.route('/finishOrder', methods=['GET'])
def finish_order():
    data = request.get_json()
    order_id = data.get('orderID', None)
    status = order_service.finish_order(order_id)
    return jsonify({"order_id": order_id,
                    "status": status,
                    "msg": order_status[status]}), 200


def run_gunicorn():
    # Gunicorn 的命令和参数
    command = [sys.executable, '-m', 'gunicorn', 'app:app']

    # 启动 Gunicorn
    subprocess.run(command)


if __name__ == '__main__':
    if os.name == 'nt':
        app.run(debug=True, port=5000, host='0.0.0.0')
    elif os.name == 'posix':
        run_gunicorn()