<?php

namespace App\Services\Admin;

use App\Models\WalletWithdrawRecord;
use App\Models\WalletTransRecord;
use App\Enums\WithdrawStatus;
use App\Enums\WithdrawAuditStatus;
use App\Enums\TransactionType;
use App\Enums\TransactionStatus;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use App\Enums\WithdrawMethod;
use EasyWeChat\Pay\Application;

class WalletWithdrawRecordService
{
    /**
     * 审核提现申请
     *
     * @param int $id 提现记录ID
     * @param int $status 审核状态(2:通过 3:拒绝)
     * @param string|null $remark 审核备注
     */
    public function audit(int $id, int $status, ?string $remark = null): void
    {
        DB::transaction(function () use ($id, $status, $remark) {
            // 获取提现记录
            $record = WalletWithdrawRecord::lockForUpdate()->findOrFail($id);

            // 验证记录状态
            abort_if($record->audit_state !== WithdrawAuditStatus::PENDING->value, 400, '提现申请状态异常');

            // 获取用户钱包
            $wallet = $record->wallet;
            abort_if(!$wallet, 404, '钱包信息不存在');

            // 验证冻结金额
            abort_if($wallet->frozen_amount < $record->amount, 400, '钱包冻结金额异常');

            if ($status === WithdrawAuditStatus::APPROVED->value) {
                // 审核通过,发起自动打款
                $this->processApproved($record, $remark);
            } else {
                // 审核拒绝,解冻余额
                $this->processRejected($record, $remark);
            }

            // 记录审核信息
            $record->auditor = auth()->user()->name;
            $record->audit_time = now();
            $record->audit_remark = $remark;
            $record->audit_state = $status;
            $record->save();

            // 记录日志
            Log::info('提现申请审核完成', [
                'withdraw_id' => $record->id,
                'external_no' => $record->external_no,
                'status' => $status,
                'remark' => $remark,
                'auditor' => $record->auditor
            ]);
        });
    }

    /**
     * 处理审核通过
     */
    private function processApproved(WalletWithdrawRecord $record, ?string $remark): void
    {
        try {
            // 1. 更新提现记录状态为处理中
            $record->state = WithdrawStatus::PROCESSING->value;
            $record->save();

            // 获取钱包当前余额
            $wallet = $record->wallet;
            $currentBalance = $wallet->available_balance;
            $currentRechargeBalance = $wallet->recharge_amount;

            // 2. 创建转账记录
            $transRecord = WalletTransRecord::create([
                'trans_no' => $this->generateTransNo(),
                'wallet_id' => $record->wallet_id,
                'owner_id' => $record->id,
                'owner_type' => 'withdraw', // 业务类型：提现
                'trans_type' => 2, // 交易类型：支出
                'amount' => $record->amount,
                'before_balance' => $currentBalance,
                'after_balance' => $currentBalance - $record->amount,
                'before_recharge_balance' => $currentRechargeBalance,
                'after_recharge_balance' => $currentRechargeBalance,
                'trans_time' => now(),
                'remark' => '提现打款',
                'state' => TransactionStatus::PROCESSING->value,
                'province' => $record->area_code ? substr($record->area_code, 0, 2) . '0000' : null,
                'city' => $record->area_code ? substr($record->area_code, 0, 4) . '00' : null,
                'district' => $record->area_code
            ]);

            // 3. 调用支付服务发起转账
            // TODO: 对接实际的支付服务
            $paymentResult = $this->processPayment($record);

            if ($paymentResult['success']) {
                // 4. 打款成功
                // 4.1 更新提现记录状态
                $record->state = WithdrawStatus::SUCCESS->value;
                $record->withdraw_time = now();
                $record->trans_no = $paymentResult['trade_no'];
                $record->remark = '打款成功';
                $record->save();

                // 4.2 更新转账记录状态
                $transRecord->state = TransactionStatus::SUCCESS->value;
                $transRecord->trans_no = $paymentResult['trade_no'];
                $transRecord->save();

                // 4.3 扣除钱包冻结金额
                $record->wallet->decrement('frozen_amount', $record->amount);

                // 4.4 扣除钱包总金额
                $record->wallet->decrement('total_balance', $record->amount);
            } else {
                // 5. 打款失败
                throw new \Exception($paymentResult['message'] ?? '打款失败');
            }
        } catch (\Exception $e) {
            // 6. 处理异常
            Log::error('提现打款失败', [
                'withdraw_id' => $record->id,
                'error' => $e->getMessage()
            ]);

            // 6.1 更新提现记录状态
            $record->state = WithdrawStatus::FAILED->value;
            $record->remark = $e->getMessage();
            $record->save();

            // 6.2 更新转账记录状态
            if (isset($transRecord)) {
                $transRecord->state = TransactionStatus::FAILED->value;
                $transRecord->save();
            }

            // 6.3 解冻余额
            $this->unfreezeBalance($record);

            throw $e;
        }
    }

    /**
     * 处理审核拒绝
     */
    private function processRejected(WalletWithdrawRecord $record, ?string $remark): void
    {
        // 1. 更新提现记录状态
        $record->state = WithdrawStatus::FAILED->value;
        $record->save();

        // 2. 解冻余额
        $this->unfreezeBalance($record);

        // 3. 记录日志
        Log::info('提现申请已拒绝', [
            'withdraw_id' => $record->id,
            'external_no' => $record->external_no,
            'amount' => $record->amount,
            'remark' => $remark
        ]);
    }

    /**
     * 解冻余额
     */
    private function unfreezeBalance(WalletWithdrawRecord $record): void
    {
        $wallet = $record->wallet;

        // 获取当前余额
        $currentBalance = $wallet->available_balance;
        $currentRechargeBalance = $wallet->recharge_amount;

        // 从冻结金额中减少
        $wallet->decrement('frozen_amount', $record->amount);

        // 增加可用余额
        $wallet->increment('available_balance', $record->amount);

        // 记录解冻操作
        WalletTransRecord::create([
            'trans_no' => $this->generateTransNo(),
            'wallet_id' => $wallet->id,
            'owner_id' => $record->id,
            'owner_type' => 'withdraw',
            'trans_type' => 1, // 交易类型：收入
            'amount' => $record->amount,
            'before_balance' => $currentBalance,
            'after_balance' => $currentBalance + $record->amount,
            'before_recharge_balance' => $currentRechargeBalance,
            'after_recharge_balance' => $currentRechargeBalance,
            'trans_time' => now(),
            'remark' => '提现拒绝解冻',
            'state' => TransactionStatus::SUCCESS->value
        ]);
    }

    /**
     * 生成交易流水号
     */
    private function generateTransNo(): string
    {
        return 'T' . date('YmdHis') . str_pad(random_int(1, 9999), 4, '0', STR_PAD_LEFT);
    }

    /**
     * 处理实际打款
     *
     * @param WalletWithdrawRecord $record 提现记录
     * @return array [
     *     'success' => bool 是否成功
     *     'trade_no' => string 交易流水号
     *     'message' => string 结果信息
     * ]
     * @throws \Exception
     */
    private function processPayment(WalletWithdrawRecord $record): array
    {
        try {
            Log::info('开始处理提现打款', [
                'withdraw_id' => $record->id,
                'withdraw_type' => $record->withdraw_type,
                'amount' => $record->amount,
                'account' => $record->withdraw_account
            ]);

            // 根据提现方式调用不同的转账接口
            if ($record->withdraw_type === WithdrawMethod::WECHAT->value) {
                Log::info('使用微信转账方式', [
                    'withdraw_id' => $record->id,
                    'config' => config('wechat.pay.default')
                ]);

                // 使用 EasyWeChat 支付实例
                $config = config('wechat.pay.default');
                $app = new \EasyWeChat\Pay\Application($config);

                // 生成商户订单号
                $outTradeNo = 'W' . date('YmdHis') . str_pad($record->id, 6, '0', STR_PAD_LEFT);

                $requestData = [
                    'partner_trade_no' => $outTradeNo,
                    'openid' => $record->withdraw_account,
                    'check_name' => 'NO_CHECK',  // 不校验真实姓名
                    'amount' => (int)bcmul($record->amount, '100'),  // 金额单位为分
                    'desc' => '提现到零钱',
                ];

                Log::info('微信转账请求参数', [
                    'withdraw_id' => $record->id,
                    'request_data' => $requestData
                ]);

                try {
                    // 使用商家转账接口
                    $response = $app->getClient()->postJson('v3/fund-app/mch-transfer/transfer-bills', [
                        'appid' => $config['app_id'],
                        'out_bill_no' => $outTradeNo,
                        'transfer_scene_id' => '1001', // 现金营销场景
                        'openid' => $record->withdraw_account,
                        // 'user_name' => $record->withdraw_account_name,
                        'transfer_amount' => (int)bcmul($record->amount, '100'),
                        'transfer_remark' => '提现到零钱',
                        'transfer_scene_report_infos' => [
                            [
                                'info_type' => '活动名称',
                                'info_content' => '用户提现'
                            ],
                            [
                                'info_type' => '奖励说明',
                                'info_content' => '余额提现'
                            ]
                        ]
                    ]);

                    $result = $response->toArray();

                    Log::info('微信转账响应结果', [
                        'withdraw_id' => $record->id,
                        'result' => $result
                    ]);

                    // 检查转账状态
                    if (isset($result['bill_id'])) {
                        Log::info('微信转账成功', [
                            'withdraw_id' => $record->id,
                            'bill_id' => $result['bill_id'],
                            'out_bill_no' => $outTradeNo
                        ]);

                        return [
                            'success' => true,
                            'trade_no' => $result['bill_id'],
                            'message' => '微信转账成功'
                        ];
                    }

                    throw new \Exception($result['err_code_des'] ?? '微信转账失败');
                } catch (\Exception $e) {
                    Log::error('微信转账请求异常', [
                        'withdraw_id' => $record->id,
                        'error' => $e->getMessage(),
                        'trace' => $e->getTraceAsString()
                    ]);
                    throw $e;
                }
            } elseif ($record->withdraw_type === WithdrawMethod::ALIPAY->value) {
                Log::info('使用支付宝转账方式', [
                    'withdraw_id' => $record->id,
                    'config' => [
                        'app_id' => config('alipay.app_id'),
                        // 不记录敏感信息
                    ]
                ]);

                // 使用支付宝 SDK 调用转账接口
                $config = [
                    'app_id' => config('alipay.app_id'),
                    'private_key' => config('alipay.private_key'),
                    'alipay_public_key' => config('alipay.alipay_public_key'),
                ];

                // 初始化支付宝 SDK
                \Alipay\EasySDK\Kernel\Factory::setOptions($config);

                $requestData = [
                    'out_biz_no' => $record->external_no,
                    'trans_amount' => $record->amount,
                    'product_code' => 'TRANS_ACCOUNT_NO_PWD',
                    'biz_scene' => 'DIRECT_TRANSFER',
                    'payee_info' => [
                        'identity' => $record->withdraw_account,
                        'identity_type' => 'ALIPAY_LOGON_ID',
                        'name' => $record->withdraw_account_name,
                    ],
                    'remark' => '用户提现',
                ];

                Log::info('支付宝转账请求参数', [
                    'withdraw_id' => $record->id,
                    'request_data' => $requestData
                ]);

                $result = \Alipay\EasySDK\Kernel\Factory::payment()->common()
                    ->transfer($requestData);

                Log::info('支付宝转账响应结果', [
                    'withdraw_id' => $record->id,
                    'result' => json_encode($result)
                ]);

                if ($result->code === '10000') {
                    Log::info('支付宝转账成功', [
                        'withdraw_id' => $record->id,
                        'trade_no' => $result->order_id
                    ]);

                    return [
                        'success' => true,
                        'trade_no' => $result->order_id,
                        'message' => '支付宝转账成功'
                    ];
                }

                throw new \Exception($result->sub_msg ?? '支付宝转账失败');
            } elseif ($record->withdraw_type === WithdrawMethod::BANK->value) {
                Log::info('使用银行卡转账方式(模拟)', [
                    'withdraw_id' => $record->id
                ]);

                // 银行卡转账暂时使用模拟逻辑
                $tradeNo = 'BANK' . time() . random_int(1000, 9999);

                Log::info('模拟银行卡打款成功', [
                    'withdraw_id' => $record->id,
                    'trade_no' => $tradeNo
                ]);

                return [
                    'success' => true,
                    'trade_no' => $tradeNo,
                    'message' => '模拟银行卡打款成功'
                ];
            } else {
                Log::error('不支持的提现方式', [
                    'withdraw_id' => $record->id,
                    'withdraw_type' => $record->withdraw_type
                ]);

                throw new \Exception('不支持的提现方式');
            }
        } catch (\Exception $e) {
            Log::error('转账处理失败', [
                'withdraw_id' => $record->id,
                'withdraw_type' => $record->withdraw_type,
                'error_message' => $e->getMessage(),
                'error_trace' => $e->getTraceAsString()
            ]);

            return [
                'success' => false,
                'trade_no' => '',
                'message' => $e->getMessage()
            ];
        }
    }
}