<?php

namespace App\Actions\Dealer;

use App\Models\Dealer;
use App\Models\DealerPurchaseLog;
use Illuminate\Support\Carbon;

class CalculatePurchaseAmount
{
    /**
     * 计算经销商的进货业绩
     *
     * @param \App\Models\Dealer $dealer
     * @param \Illuminate\Support\Carbon|null $start
     * @param \Illuminate\Support\Carbon|null $end
     * @return string
     */
    public function handle(Dealer $dealer, ?Carbon $start = null, ?Carbon $end = null): string
    {
        $query = DealerPurchaseLog::query();

        if ($start && $end) {
            $query->whereBetween('order_completed_at', [$start, $end]);
        } else {
            $query->when($start, function ($query, $start) {
                $query->where('order_completed_at', '>=', $start);
            })->when($end, function ($query, $end) {
                $query->where('order_completed_at', '<=', $end);
            });
        }

        return $query->where('path', 'like', "{$dealer->userInfo->full_path}%")->sum('total_amount');
    }
}