<?php

namespace App\Jobs\Product;

use App\Models\Product\Product;
use App\Models\System\SystemOperationLog;
use App\Services\Product\ProductCatalogService;
use App\Traits\ImageHandler;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Http\UploadedFile;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\Storage;

/**
 * 背景處理產品匯入的圖片：將已解壓資料夾中的圖片逐筆轉 WebP 入庫並寫回 image_url。
 * 與商品文字匯入解耦，避免大量圖片同步轉檔導致請求逾時。
 * 完成後重建目錄快取並刪除暫存圖片資料夾。
 */
class AttachProductImagesJob implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels, ImageHandler;

    public int $timeout = 1800;   // 30 分鐘，容納大量圖片轉檔
    public int $tries = 1;        // 圖片步驟不重試整批（避免重複轉檔），失敗以 log 呈現

    /**
     * @param array<int, array{product_id:int, filename:string, row:int}> $pendingImages
     */
    public function __construct(
        protected array $pendingImages,
        protected string $imageDir,
        protected ?int $companyId = null,
        protected ?int $userId = null
    ) {}

    public function handle(ProductCatalogService $catalogService): void
    {
        $success = 0;
        $missing = [];

        try {
            foreach ($this->pendingImages as $item) {
                $product = Product::withoutGlobalScopes()->find($item['product_id']);
                if (!$product) {
                    $missing[] = $item;
                    continue;
                }

                $path = rtrim($this->imageDir, '/') . '/' . basename($item['filename']);
                if (!is_file($path) || getimagesize($path) === false) {
                    $missing[] = $item;
                    continue;
                }

                try {
                    $oldImage = $product->image_url;
                    $file = new UploadedFile($path, basename($path), null, null, true);
                    $storedPath = $this->storeAsWebp($file, 'products', 80, 320, 320);
                    $product->update(['image_url' => Storage::url($storedPath)]);

                    if ($oldImage) {
                        Storage::disk('public')->delete(str_replace('/storage/', '', $oldImage));
                    }
                    $success++;
                } catch (\Throwable $e) {
                    $missing[] = $item;
                }
            }

            // 圖片已更新，重建目錄快取讓機台拿到新圖
            if ($this->companyId) {
                $catalogService->rebuildCache($this->companyId);
            }

            SystemOperationLog::create([
                'company_id' => $this->companyId,
                'user_id' => $this->userId,
                'module' => 'product',
                'action' => 'update',
                'target_type' => Product::class,
                'note' => 'product_import_images_processed',
                'new_values' => [
                    'image_success' => $success,
                    'image_missing' => count($missing),
                    'missing_detail' => $missing,
                ],
            ]);
        } finally {
            // 無論成敗，清掉暫存圖片資料夾
            if (is_dir($this->imageDir)) {
                File::deleteDirectory($this->imageDir);
            }
        }
    }
}