<?php

namespace App\Http\Controllers\Api;

use App\Exceptions\OllamaUnavailableException;
use App\Http\Controllers\Controller;
use App\Http\Requests\StoreTicketRequest;
use App\Models\Ticket;
use App\Services\EmbeddingService;
use App\Services\SemanticSearchService;
use Illuminate\Http\JsonResponse;

class TicketController extends Controller
{
    public function __construct(
        private readonly EmbeddingService $embeddingService,
        private readonly SemanticSearchService $semanticSearchService,
    ) {}

    public function store(StoreTicketRequest $request): JsonResponse
    {
        try {
            $embedding = $this->embeddingService->embed($request->string('message')->toString());
        } catch (OllamaUnavailableException $e) {
            return response()->json([
                'message' => 'Ollama is unavailable. Could not generate embedding.',
            ], 503);
        }

        $ticket = Ticket::query()->create([
            'message' => $request->string('message')->toString(),
            'embedding' => $embedding,
        ]);

        try {
            $result = $this->semanticSearchService->findBestArticle($ticket);
        } catch (OllamaUnavailableException $e) {
            return response()->json([
                'message' => 'Ticket saved, but Ollama ranking is unavailable.',
                'ticket_id' => $ticket->id,
            ], 202);
        }

        return response()->json([
            'ticket_id' => $ticket->id,
            'best_article' => $result['best_article'],
            'confidence' => $result['confidence'],
            'explanation' => $result['explanation'],
            'top_3_candidates' => $result['top_3_candidates'],
        ], 201);
    }
}