<?php

namespace App\Services;

use App\Models\Article;

class ArticleIndexingService
{
    public function __construct(
        private readonly EmbeddingService $embeddingService,
        private readonly ArticleChunkerService $chunkerService,
    ) {}

    public function indexArticle(Article $article): void
    {
        $chunks = $this->chunkerService->chunk($article->title."\n\n".$article->content, 100, 20);
        $context = $this->embeddingService->context();

        $article->chunks()->delete();

        foreach ($chunks as $idx => $chunkText) {
            $article->chunks()->create([
                'chunk_index' => $idx,
                'content' => $chunkText,
                'embedding' => $this->embeddingService->embed($chunkText),
                'embedding_provider_instance_id' => $context['provider_instance_id'],
                'embedding_model' => $context['embedding_model'],
                'embedded_at' => now(),
            ]);
        }

        // Keep article-level embedding for backward compatibility/debugging.
        $article->embedding = $this->embeddingService->embed($article->title."\n".$article->content);
        $article->saveQuietly();
    }
}