<?php

declare(strict_types=1);

namespace App\Controllers\Api;

use App\Controllers\BaseController;
use App\Libraries\Pipeline\Youtube as YoutubeLib;

/**
 * Instant YouTube URL analysis used by the paste-a-link UX: returns
 * oEmbed metadata + thumbnail candidates before any job is queued.
 */
final class Youtube extends BaseController
{
    public function info(): \CodeIgniter\HTTP\ResponseInterface
    {
        $payload = $this->request->getJSON(true) ?: $this->request->getPost();
        $url     = (string) ($payload['url'] ?? '');

        $videoId = YoutubeLib::extractId($url);
        if ($videoId === null) {
            return response()->setStatusCode(422)->setJSON([
                'ok' => false, 'error' => 'invalid_url',
                'message' => 'Invalid YouTube URL. Paste a link like https://www.youtube.com/watch?v=…',
            ]);
        }

        service('analytics')->track('tool_start', ['tool' => 'youtube-url-analyzer']);

        return response()->setJSON([
            'ok'         => true,
            'id'         => $videoId,
            'watch_url'  => 'https://www.youtube.com/watch?v=' . $videoId,
            'embed_url'  => 'https://www.youtube-nocookie.com/embed/' . $videoId,
            'thumbnails' => [
                ['label' => 'Max resolution', 'url' => "https://i.ytimg.com/vi/{$videoId}/maxresdefault.jpg"],
                ['label' => 'Standard',       'url' => "https://i.ytimg.com/vi/{$videoId}/sddefault.jpg"],
                ['label' => 'High quality',   'url' => "https://i.ytimg.com/vi/{$videoId}/hqdefault.jpg"],
                ['label' => 'Medium',         'url' => "https://i.ytimg.com/vi/{$videoId}/mqdefault.jpg"],
            ],
            'info' => YoutubeLib::fetchInfo($videoId),
        ]);
    }
}