<?php

namespace App\Http\Controllers\API\Admin\YeWu;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class LoanController
{
    public function GetList()
    {
        $page = request('page');
        $pageSize = request('pageSize');
        $searchInfo = request('searchInfo');
        $list = DB::table('loans')
            ->leftJoin('members', 'loans.member_id', '=', 'members.id')
            ->select('loans.*', 'members.name', 'members.tel', 'members.bank_name', 'members.card_number')
            ->where('loans.is_del', 0);
        if (!empty($searchInfo['info'])) {
            $list->where('members.name', 'like', '%' . $searchInfo['info'] . '%')
                ->orWhere('members.tel', $searchInfo['info']);
        }
        $count = $list->count();
        $list = $list
            ->orderBy('loans.id', 'desc')
            ->limit($pageSize)->skip(($page - 1) * $pageSize)->take($pageSize)
            ->get();

        return \Yz::Return(true, '获取成功', ['list' => $list, 'count' => $count]);
    }

    // 审核
    public function Verify(Request $request)
    {
        $dayCutCheck = \Yz::DayCutCheck();
        if(!$dayCutCheck['status']){
            return \Yz::echoError1($dayCutCheck['msg']);
        }
        $userid = $request->get('userid');//中间件产生的参数
        $id = request('id');
        $ChangeStatus = request('ChangeStatus');
        $Note = request('Note');
        if(empty($ChangeStatus)){
                return \Yz::Return(false, '操作类型不能为空');
        }
        try {
            $result = DB::transaction(function () use ($id, $ChangeStatus, $Note, $userid) {
                // 1. 获取借款记录（加锁）
                $loan = DB::table('loans')
                    ->where('id', $id)
                    ->where('is_del', 0)
                    ->lockForUpdate()
                    ->first();

                if (empty($loan)) {
                    throw new \Exception('借款记录不存在');
                }
                // 2. 获取用户信息（加锁）
                $memberInfo = DB::table('members')
                    ->where('id', $loan->member_id)
                    ->lockForUpdate()
                    ->first();

                if (empty($memberInfo)) {
                    throw new \Exception('用户不存在');
                }
                $amount = (string)$loan->amount;
                $outstanding_loan_amount= (string)$memberInfo->outstanding_loan_amount;
                $up_loan_data_temp=[];
                if($ChangeStatus == 3){ //放款
                    $new_outstanding_loan_amount=bcadd($outstanding_loan_amount, $amount, 2); // 新的未还金额 = 未还金额 + 放款金额
                    $up_member=DB::table('members')
                    ->where('id', $loan->member_id)
                    ->update([
                        'outstanding_loan_amount' => $new_outstanding_loan_amount,
                    ]);
                    $up_loan_data_temp=['disbursed_time'=>date('Y-m-d H:i:s')];
                }
                if($ChangeStatus == 4){ //已还款
                    $new_outstanding_loan_amount=bcsub($outstanding_loan_amount, $amount, 2); // 新的未还金额 = 未还金额 - 还款金额
                    if ($new_outstanding_loan_amount < 0) { // 未还金额不能小于0
                        throw new \Exception('还款金额不能大于未还金额');
                    }
                    $up_member=DB::table('members')
                    ->where('id', $loan->member_id)
                    ->update([
                        'outstanding_loan_amount' => $new_outstanding_loan_amount,
                    ]);
                    $up_loan_data_temp=['repayment_time'=>date('Y-m-d H:i:s')];
                }

                $up_loan_data2 = [
                    'status' => $ChangeStatus,
                    'verify_userid' => $userid,
                    'verify_time' => date('Y-m-d H:i:s'),
                    'note' => $Note,
                ];
                $up_loan_data=array_merge($up_loan_data2,$up_loan_data_temp);
                $up_loan=DB::table('loans')
                ->where('id', $id)
                ->update($up_loan_data);

                if($up_loan){
                    return true;
                }else{
                    throw new \Exception('审核失败');
                }

            });
            if($result){
                return \Yz::Return(true, '审核成功',['loan'=>$id]);
            }else{
                return \Yz::Return(false, '审核失败');
            }
        } catch (\Exception $e) {
            return \Yz::Return(false, $e->getMessage());
        }


    }
}