<?php

namespace App\Services;

use App\Models\Backflow;
use App\Models\Config;
use Carbon\Carbon;

class BackflowService extends BaseService
{
    public static string $MODEL = Backflow::class;

    /**
     * @param $memberId string 会员ID
     * @param  $changeAmount float 充值或提现金额
     * @return Backflow
     */
    public static function updateOrCreate(string $memberId, float $changeAmount): Backflow
    {
        $data['date'] = Carbon::now('Asia/Shanghai')->format('Y-m');
        $data['backflow_ratio'] = Config::where('field', 'huishui_percentage')->first()->val;
        $data['member_id'] = $memberId;
        if ($changeAmount > 0) $data['recharge_amount'] = $changeAmount;
        else $data['withdrawal_amount'] = $changeAmount;

        $backflow = static::$MODEL::where('date', $data['date'])
            ->where('member_id', $memberId)->first();
        if ($backflow) {
            if ($changeAmount > 0) $field = "recharge_amount";
            else $field = 'withdrawal_amount';
            $backflow->backflow_ratio = $data['backflow_ratio'];
            $backflow->increment($field, $changeAmount);
            $backflow->save();
        } else {
            $backflow = static::$MODEL::create($data);
        }
        $restriction = Config::where('field', 'huishui_restriction')->first()->val;
        $difference = bcadd($backflow->recharge_amount, $backflow->withdrawal_amount, 2);
        $difference = abs($difference);
        if ($difference >= $restriction) {
            $backflow->amount = bcmul($difference, $backflow->backflow_ratio, 2);
        } else {
            $backflow->amount = 0;
        }
        $backflow->save();
        return $backflow;
    }


    public static function getWhere(array $search = []): array
    {
        $where = [];
        if (isset($search['id']) && !empty($search['id'])) {
            $where[] = ['id', '=', $search['id']];
        }

        if (isset($search['member_id']) && !empty($search['member_id'])) {
            $where[] = ['member_id', '=', $search['member_id']];
        }

        if (isset($search['date']) && !empty($search['date'])) {
            $where[] = ['date', '=', $search['date']];
        }


        if (isset($search['status']) && $search['status'] != '') {
            $where[] = ['status', '=', $search['status']];
        }

        return $where;
    }

    public static function paginate(array $search = []): array
    {
        $date = Carbon::now('Asia/Shanghai')->format('Y-m');
        $limit = isset($search['limit']) ? $search['limit'] : 15;
        $paginator = self::$MODEL::where(self::getWhere($search))
//            ->where('date', '<', $date)
            ->orderByDesc('date')
            ->orderBy('status')
            ->paginate($limit);
        return ['total' => $paginator->total(), 'data' => $paginator->items()];
    }
}