<?php

namespace App\Services;

use App\Exceptions\BizException;
use App\Exceptions\InvalidPaySerialNumberException;
use App\Models\{Order, OrderPre};
use App\Models\PayLog;

class PayService
{
    /**
     * 根据支付流水号处理支付成功业务
     *
     * @param string $sn
     * @param array $params
     * @return \App\Models\PayLog
     *
     * @throws \App\Exceptions\BizException
     * @throws \App\Exceptions\InvalidPaySerialNumberException
     */
    public function handleSuccessByPaySerialNumber(string $paySerialNumber, array $params = []): PayLog
    {
        $payLog = PayLog::where('pay_sn', $paySerialNumber)->lockForUpdate()->first();

        if ($payLog === null) {
            throw new InvalidPaySerialNumberException();
        }

        return $this->handleSuccess($payLog, $params);
    }

    /**
     * 处理支付成功业务
     *
     * @param \App\Models\PayLog $payLog
     * @param array $params
     * @return \App\Models\PayLog
     *
     * @throws \App\Exceptions\BizException
     * @throws \App\Exceptions\InvalidPaySerialNumberException
     */
    public function handleSuccess(PayLog $payLog, array $params = []): PayLog
    {
        if (! $payLog->isPending()) {
            throw new InvalidPaySerialNumberException();
        }

        $payLog->update([
            'pay_at' => $params['pay_at'] ?? now(),
            'out_trade_no' => $params['out_trade_no'] ?? null,
            'status' => PayLog::STATUS_SUCCESS,
        ]);

        $payable = $payLog->payable;

        if ($payable instanceof Order) {
            if ($payable->isPaid()) {
                throw new BizException('订单已支付');
            }

            if ($payable->isCompleted()) {
                throw new BizException('订单已完成');
            }

            $payable->update([
                'pay_sn' => $payLog->pay_sn,
                'pay_way' => $payLog->pay_way,
                'pay_at' => $payLog->pay_at,
                'out_trade_no' => $payLog->out_trade_no,
                'status' => Order::STATUS_PAID,
            ]);
        } else if ($payable instanceof \App\Models\UserVip) {
            (new \App\Services\VipService())->success($payable, ['pay_at' => $payLog->pay_at]);
        }

        return $payLog;
    }

    /**
     * 根据支付流水号处理支付失败业务
     *
     * @param string $sn
     * @param array $params
     * @return \App\Models\PayLog
     *
     * @throws \App\Exceptions\BizException
     * @throws \App\Exceptions\InvalidPaySerialNumberException
     */
    public function handleFailedByPaySerialNumber(string $paySerialNumber, array $params = []): PayLog
    {
        $payLog = PayLog::where('pay_sn', $paySerialNumber)->lockForUpdate()->first();

        if ($payLog === null) {
            throw new InvalidPaySerialNumberException();
        }

        return $this->handleFailed($payLog, $params);
    }

    /**
     * 处理支付失败业务
     *
     * @param \App\Models\PayLog $payLog
     * @param array $params
     * @return \App\Models\PayLog
     *
     * @throws \App\Exceptions\BizException
     * @throws \App\Exceptions\InvalidPaySerialNumberException
     */
    public function handleFailed(PayLog $payLog, array $params = []): PayLog
    {
        if (! $payLog->isPending()) {
            throw new InvalidPaySerialNumberException();
        }

        $payLog->update([
            'out_trade_no' => $params['out_trade_no'] ?? null,
            'status' => PayLog::STATUS_FAILED,
            'failed_reason' => $params['failed_reason'] ?? null,
        ]);

        return $payLog;
    }
}