<?php

namespace App\Jobs;

use App\Models\DocumentVersion;
use App\Services\KnowledgeBase\AuditService;
use App\Services\KnowledgeBase\IngestionService;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Log;
use Throwable;

/**
 * ReindexDocumentJob
 *
 * Reindex (reprocess embedding) untuk document version tertentu.
 * Berguna bila:
 * - model embedding ditukar
 * - chunking strategy dikemaskini
 * - Qdrant collection diset semula
 *
 * Proses: Deactivate chunk lama → Delete chunk lama → Re-chunk → Re-embed → Qdrant
 */
class ReindexDocumentJob implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    public int $tries = 2;
    public int $backoff = 60;
    public int $timeout = 600;

    public function __construct(
        private readonly int $documentVersionId
    ) {
        $this->onQueue(config('knowledgebase.queue.ingestion', 'default'));
    }

    public function handle(IngestionService $ingestionService, AuditService $auditService): void
    {
        $version = DocumentVersion::with(['document.category'])->findOrFail($this->documentVersionId);

        Log::info("ReindexDocumentJob mula untuk version {$this->documentVersionId}");

        // Deactivate point lama dalam Qdrant
        $ingestionService->deactivateVersionInQdrant($version);

        // Padam chunk lama dari MySQL untuk reprocess
        $version->chunks()->delete();

        // Reset status dan mula proses semula
        $version->update([
            'processing_status'      => DocumentVersion::STATUS_PENDING,
            'processing_error'       => null,
            'processing_completed_at' => null,
        ]);

        // Reprocess
        $ingestionService->processDocumentVersion($version);

        $auditService->documentReindexed($version->document, $version);

        Log::info("ReindexDocumentJob selesai untuk version {$this->documentVersionId}");
    }

    public function failed(Throwable $exception): void
    {
        Log::error("ReindexDocumentJob GAGAL untuk version {$this->documentVersionId}", [
            'error' => $exception->getMessage(),
        ]);

        $version = DocumentVersion::find($this->documentVersionId);
        $version?->updateStatus(
            DocumentVersion::STATUS_FAILED,
            'Reindex gagal: ' . $exception->getMessage()
        );
    }
}