<?php

namespace App\Services;

use App\Models\Tenant\WorkOrder;
use Barryvdh\DomPDF\Facade\Pdf;

class WorkOrderPdfService
{
    public function generate(WorkOrder $wo): \Barryvdh\DomPDF\PDF
    {
        $wo->load(['client', 'vehicle', 'master', 'works.master', 'parts', 'payments']);
        $company = $wo->company ?: \App\Models\Central\Company::find($wo->company_id);

        $themeColor = $company?->settings['theme_color'] ?? '#3B82F6';
        $currency = $company?->settings['currency'] ?? 'MDL';
        $worksTotal = (float) $wo->works->sum('total');
        $partsTotal = (float) $wo->parts->sum('total');
        $paid = (float) $wo->payments->sum('amount');
        $balance = max(0, (float) $wo->total - $paid);

        // Embed logo as data URI (DomPDF can't fetch external URLs reliably).
        $logoData = null;
        if ($company && ($logoMedia = $company->getFirstMedia('logo'))) {
            try {
                $path = $logoMedia->getPath();
                if (file_exists($path)) {
                    $mime = mime_content_type($path) ?: 'image/png';
                    $logoData = 'data:' . $mime . ';base64,' . base64_encode(file_get_contents($path));
                }
            } catch (\Throwable $e) {
                $logoData = null;
            }
        }

        return Pdf::loadView('pdf.work-order', [
            'wo' => $wo,
            'company' => $company,
            'themeColor' => $themeColor,
            'currency' => $currency,
            'worksTotal' => $worksTotal,
            'partsTotal' => $partsTotal,
            'paid' => $paid,
            'balance' => $balance,
            'logoData' => $logoData,
        ])->setPaper('A4');
    }

    public function filename(WorkOrder $wo): string
    {
        return 'WO-' . $wo->number . '-' . optional($wo->opened_at)->format('Ymd') . '.pdf';
    }
}