<?php

namespace App\Console\Commands;

use App\Models\ProductSize;
use App\Services\ShopifyService;
use Illuminate\Console\Command;

class ShopifyMap extends Command
{
    protected $signature   = 'shopify:map {--dry-run : Änderungen nur anzeigen, nichts speichern}';
    protected $description = 'Verknüpft Shopify-Variant-IDs mit lokalen ProductSizes per SKU';

    public function handle(ShopifyService $shopify): int
    {
        $dryRun = $this->option('dry-run');
        $variants = $shopify->getAllVariants();

        $this->info('Shopify-Varianten geladen: ' . count($variants));

        $mapped = 0;
        $skipped = 0;
        $noSku = 0;

        foreach ($variants as $variant) {
            if (empty($variant['sku'])) {
                $noSku++;
                continue;
            }

            $size = ProductSize::where('sku', $variant['sku'])->first();

            if (!$size) {
                $this->warn("  SKU nicht gefunden: {$variant['sku']} ({$variant['product_title']})");
                $skipped++;
                continue;
            }

            if ($size->shopify_variant_id === $variant['id']) {
                continue; // already correct
            }

            if (!$dryRun) {
                $size->update(['shopify_variant_id' => $variant['id']]);
            }

            $this->line("  {$variant['sku']} → Variant-ID {$variant['id']}");
            $mapped++;
        }

        $this->info("✓ {$mapped} verknüpft" . ($dryRun ? ' (dry-run)' : ''));
        if ($skipped) $this->warn("⚠ {$skipped} SKUs lokal nicht gefunden");
        if ($noSku)   $this->warn("⚠ {$noSku} Shopify-Varianten ohne SKU übersprungen");

        return self::SUCCESS;
    }
}