<?php

namespace App\Actions\Dealer;

use App\Models\Dealer;

class CalculatePurchaseAmountOfCurrentPeriod
{
    public function __construct(
        protected CalculatePurchaseAmount $calculatePurchaseAmount,
    ) {
    }

    /**
     * 计算当期的进货业绩
     *
     * @param \App\Models\Dealer $dealer
     * @return string
     */
    public function handle(Dealer $dealer): string
    {
        $tz = now();

        if ($tz->day >= 20) {
            // 上月20号-当月19号的进货业绩
            $startAt = $tz->copy()->subMonthNoOverflow()->setDay(20)->startOfDay();
        } else {
            // 上上月20号-上月19号的进货业绩
            $startAt = $tz->copy()->subMonthsNoOverflow(2)->setDay(20)->startOfDay();
        }

        return bcmul($this->calculatePurchaseAmount->handle($dealer, $startAt), '1', 2);
    }
}