<?php

namespace App\Http\Controllers\Api;
use App\Models\Agent;
use App\Models\AgentProduct;
use App\Models\Order;
use App\Models\Product;
use App\Models\UserMoneyLog;
use EasyWeChat\Factory;
use EasyWeChat\Kernel\Exceptions\Exception;
use EasyWeChat\Payment\Kernel\Exceptions\InvalidSignException;
use Illuminate\Support\Facades\DB;
use App\Service\OrderStatus;

class WxpayController
{
	//微信支付 支付结果通知网址
	public function notify()
	{
		// {"sign": "3F99E6044C503B0E0131F95A1410B630", "appid": "wxb35ef055a4dd8ad4", "mch_id": "1606181693", "openid": "oBYj55W0gLv5MYUnsYUuJfzYzmsg", "cash_fee": "1", "fee_type": "CNY", "time_end": "20210623222330", "bank_type": "OTHERS", "nonce_str": "60d343d820e94", "total_fee": "1", "trade_type": "JSAPI", "result_code": "SUCCESS", "return_code": "SUCCESS", "is_subscribe": "N", "out_trade_no": "2842908479209865216", "transaction_id": "4200001210202106237487333085"}

		$agent_id = request()->route('agent_id');
		$agent = Agent::find($agent_id);

		$config = config('wechat.payment.default');
		$config = array_merge($config, [
			'app_id' => $agent->appid,
			'mch_id' => $agent->mchid,
			'key' => $agent->mchkey,
		]);
		$app = Factory::payment($config);
		try {
			$response = $app->handlePaidNotify(function ($message, $fail) {
				// 请求成功
				if ($message['return_code'] === 'SUCCESS') {
					//订单号带有pay_type后缀，主要是为了区分定金支付和尾款支付，前24位才是真正的订单号
					$order_no = substr($message['out_trade_no'], 0, 24);
					$order = Order::query()
						->where(['order_no' => $order_no])
						->first();

					//已经处理过的订单直接返回true
					if ($order && in_array($order->status, [OrderStatus::PAID, OrderStatus::PAID_RETAINAGE])) {
						return true;
					}

					// 支付成功
					if ($message['result_code'] === 'SUCCESS') {
						DB::beginTransaction();
						try {
							$status = $order->status;
							$pay_type = $order->pay_type;
							//定金支付和首付款支付
							if (in_array($pay_type, [1, 2])) {
								if ($pay_type == OrderStatus::UNPAID) {
									$order->status = OrderStatus::PAY_EARNEST;
								} else if ($status == OrderStatus::PAY_EARNEST) {
									$order->status = OrderStatus::PAID_RETAINAGE;
								}
							} else if ($pay_type == 0) {
								$order->status = OrderStatus::PAID;
							}

							$money = $message['total_fee'] / 100;
							$order->paid_at = time();
							$order->paid_money = DB::raw('`paid_money` + ' . $money);
							$order->save();

							//增加销量，库存在拍下时已经减了
							AgentProduct::query()
								->where('id', $order->agent_product_id)
								->increment('sale', $order->num);
							Product::query()
								->where('id', $order->product_id)
								->increment('sale', $order->num);

							//资金流水
							UserMoneyLog::query()->create([
								'user_id' => $order->user_id,
								'agent_id' => $order->agent_id,
								'money' => -$money,
								'order_id' => $order->id,
								'type' => 1,
								'desc' => '购买产品：' . $order->title,
								'created_at' => time(), //模型没有updated_at，无法自动写入时间
							]);

							DB::commit();
							return true;
						} catch (Exception $e) {
							DB::rollBack();
							$fail('Unknown error');
						}
					} // 支付失败
					else if ($message['result_code'] === 'FAIL') {
						return true;
					}
				}

				// 希望微信重试
				$fail('Order not exists.');
			});
		} catch (InvalidSignException | Exception $e) {
			$time = time();
			$filename = storage_path('logs/wxpay_notify_') . date('Y-m-d-H', $time) . '.log';
			$data = '[' . date('Y-m-d H:i:s', $time) . ']' . PHP_EOL;
			$data .= '[message]:' . $e->getMessage() . $e->getFile() . $e->getLine() . PHP_EOL . PHP_EOL;
			file_put_contents($filename, $data, FILE_APPEND);
			return 'error';
		}

		return $response;
	}

	//退款通知
	public function refund()
	{

		// {"sign": "3F99E6044C503B0E0131F95A1410B630", "appid": "wxb35ef055a4dd8ad4", "mch_id": "1606181693", "openid": "oBYj55W0gLv5MYUnsYUuJfzYzmsg", "cash_fee": "1", "fee_type": "CNY", "time_end": "20210623222330", "bank_type": "OTHERS", "nonce_str": "60d343d820e94", "total_fee": "1", "trade_type": "JSAPI", "result_code": "SUCCESS", "return_code": "SUCCESS", "is_subscribe": "N", "out_trade_no": "2842908479209865216", "transaction_id": "4200001210202106237487333085"}

		$agent_id = request()->route('agent_id');
		$agent = Agent::find($agent_id);

		$config = config('wechat.payment.default');
		$config = array_merge($config, [
			'app_id' => $agent->appid,
			'mch_id' => $agent->mchid,
			'key' => $agent->mchkey,
		]);
		$app = Factory::payment($config);
		try {
			$response = $app->handleRefundedNotify(function ($message, $reqInfo, $fail) {
				// 记录一下本地调试
				file_put_contents(storage_path('/wxpay/refund' . date('Y-m-d-H') . '.log'), date('Y-m-d H:i:s') . PHP_EOL . json_encode($message) . PHP_EOL . json_encode($reqInfo), FILE_APPEND);
				// 请求成功
				if ($message['return_code'] === 'SUCCESS') {
					//订单号带有pay_type后缀，主要是为了区分定金支付和尾款支付，前24位才是真正的订单号
					$order_no = substr($message['out_trade_no'], 0, 24);
					$order = Order::query()
						->where(['order_sn' => $order_no])
						->first();

					// 退款成功
					if ($reqInfo['refund_status'] === 'SUCCESS') {
						DB::beginTransaction();
						try {

							$apply = RefundApply::query()
								->where('refund_sn', $reqInfo['out_refund_no'])
								->first();

							if (!$apply) {
								$fail('退款单没找到');
							}

							$apply->state = 2;
							$apply->save();

							$order->state = UserGoodsOrder::REFUNDED;
							$order->save();

							// 退库存
							GoodsSpecs::query()
								->where([
									'id' => $order->goods_specs_id,
									'goods_id' => $order->goods_id,
								])
								->update([
									'stock' => DB::raw('stock+' . $order->number . ''),
								]);

							DB::commit();
							return true;
						} catch (\Exception $e) {
							DB::rollBack();
							$fail('Unknown error');
						}
					}
				}

				$fail('Unknown error');
			});
		} catch (Exception $e) {
			return 'error';
		}

		return $response;
	}
}