<?php

namespace App\Console\Commands;

use Acme\Dhl\Models\DhlShipment;
use Illuminate\Console\Command;

class DhlBackfillEmails extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'dhl:backfill-emails 
                            {--dry-run : Nur simulieren, keine Änderungen}';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Füllt das E-Mail-Feld für bestehende DHL-Sendungen nach';

    /**
     * Execute the console command.
     */
    public function handle(): int
    {
        $dryRun = $this->option('dry-run');

        $this->info('DHL E-Mail Backfill gestartet');
        $this->info('Modus: ' . ($dryRun ? 'DRY-RUN (keine Änderungen)' : 'LIVE'));
        $this->newLine();

        // Hole alle Sendungen ohne E-Mail
        $shipments = DhlShipment::with('shoppingOrder.shopping_user')
            ->whereNull('email')
            ->orWhere('email', '')
            ->get();

        $total = $shipments->count();
        $updated = 0;
        $skipped = 0;

        $this->info("Gefundene Sendungen ohne E-Mail: {$total}");
        $this->newLine();

        $bar = $this->output->createProgressBar($total);

        foreach ($shipments as $shipment) {
            $bar->advance();

            // Hole E-Mail aus Shopping User
            $email = null;
            if ($shipment->shoppingOrder && $shipment->shoppingOrder->shopping_user) {
                $email = $shipment->shoppingOrder->shopping_user->email;
            }

            if (empty($email)) {
                $skipped++;
                continue;
            }

            if (! $dryRun) {
                $shipment->email = $email;
                $shipment->save();
            }

            $updated++;
        }

        $bar->finish();
        $this->newLine(2);

        // Statistik
        $this->info('Backfill abgeschlossen!');
        $this->newLine();
        $this->table(
            ['Metrik', 'Anzahl'],
            [
                ['Gesamt geprüft', $total],
                ['E-Mail gesetzt', $updated],
                ['Übersprungen (keine E-Mail)', $skipped],
            ]
        );

        if ($dryRun) {
            $this->warn('DRY-RUN: Keine Änderungen wurden vorgenommen.');
            $this->info('Führen Sie den Befehl ohne --dry-run aus, um die Änderungen zu speichern.');
        } else {
            $this->info("{$updated} Sendungen wurden aktualisiert.");
        }

        return Command::SUCCESS;
    }
}