<?php

namespace App\Services\Auth;

use App\Enums\PlatformEnum;
use App\Exceptions\PlatformAuthException;
use App\Modules\Lemmy\Services\LemmyApiService;
use Illuminate\Support\Facades\Cache;

class LemmyAuthService
{
    public static function getToken(): string
    {
        $cachedToken = Cache::get('lemmy_jwt_token');
        
        if ($cachedToken) {
            return $cachedToken;
        }

        $username = config('lemmy.username');
        $password = config('lemmy.password');
        $instance = config('lemmy.instance');

        if (!$username || !$password || !$instance) {
            throw new PlatformAuthException(PlatformEnum::LEMMY, 'Missing credentials or instance');
        }

        $api = new LemmyApiService($instance);
        $token = $api->login($username, $password);
        
        if (!$token) {
            throw new PlatformAuthException(PlatformEnum::LEMMY, 'Login failed');
        }

        // Cache for 50 minutes (3000 seconds) to allow buffer before token expires
        Cache::put('lemmy_jwt_token', $token, config('lemmy.token_ttl', 3000));
        
        return $token;
    }
}