fedi-feed-router/backend/app/Services/Auth/LemmyAuthService.php

<?php

namespace App\Services\Auth;

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

class LemmyAuthService
{
    /**
     * @throws PlatformAuthException
     */
    public function getToken(PlatformAccount $account): string
    {
        $cacheKey = "lemmy_jwt_token_$account->id";
        $cachedToken = Cache::get($cacheKey);

        if ($cachedToken) {
            return $cachedToken;
        }

        if (! $account->username || ! $account->password || ! $account->instance_url) {
            throw new PlatformAuthException(PlatformEnum::LEMMY, 'Missing credentials for account: ' . $account->username);
        }

        $api = new LemmyApiService($account->instance_url);
        $token = $api->login($account->username, $account->password);

        if (!$token) {
            throw new PlatformAuthException(PlatformEnum::LEMMY, 'Login failed for account: ' . $account->username);
        }

        // Cache for 50 minutes (3000 seconds) to allow buffer before token expires
        Cache::put($cacheKey, $token, 3000);

        return $token;
    }
}