<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Http;
use Throwable;

class TranslationApiController extends Controller
{
    public function languages(): JsonResponse
    {
        try {
            $response = Http::connectTimeout(2)->timeout(config('services.translation.timeout'))->get($this->url().'/languages');
            if ($response->successful() && is_array($response->json())) {
                return response()->json($response->json())->header('Cache-Control', 'no-store');
            }
        } catch (Throwable) {
        }

        return response()->json(['message' => 'Serviço de tradução temporariamente indisponível.'], 503);
    }

    public function translate(Request $request): JsonResponse
    {
        $data = $request->validate([
            'text' => 'required|string|max:10000',
            'source_lang' => 'required|string|max:20',
            'target_lang' => 'required|string|max:20',
            'is_html' => 'boolean',
        ]);
        if ($data['source_lang'] === $data['target_lang']) {
            return response()->json(['original_text' => $data['text'], 'translated_text' => $data['text'], 'source_lang' => $data['source_lang'], 'target_lang' => $data['target_lang']])->header('Cache-Control', 'no-store');
        }

        $payload = ['q' => $data['text'], 'source' => $data['source_lang'], 'target' => $data['target_lang'], 'format' => ($data['is_html'] ?? false) ? 'html' : 'text'];
        if (config('services.translation.api_key')) {
            $payload['api_key'] = config('services.translation.api_key');
        }
        try {
            $response = Http::connectTimeout(2)->timeout(config('services.translation.timeout'))->post($this->url().'/translate', $payload);
            $translated = $response->json('translatedText');
            if ($response->successful() && is_string($translated) && $translated !== '') {
                return response()->json(['original_text' => $data['text'], 'translated_text' => $translated, 'source_lang' => $data['source_lang'], 'target_lang' => $data['target_lang']])->header('Cache-Control', 'no-store');
            }
        } catch (Throwable) {
        }

        return response()->json(['message' => 'Serviço de tradução temporariamente indisponível.'], 503)->header('Cache-Control', 'no-store');
    }

    private function url(): string
    {
        return rtrim((string) config('services.translation.url'), '/');
    }
}