Navidrome-MCP

/** * Navidrome MCP Server - Authentication Manager * Copyright (C) 2025 * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published * by the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ import type { Config } from '../config.js'; import { logger } from '../utils/logger.js'; import { ErrorFormatter } from '../utils/error-formatter.js'; export class AuthManager { private token: string | null = null; private tokenExpiry: Date | null = null; private readonly config: Config; constructor(config: Config) { this.config = config; } async authenticate(): Promise<void> { const response = await fetch(`${this.config.navidromeUrl}/auth/login`, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ username: this.config.navidromeUsername, password: this.config.navidromePassword, }), }); if (!response.ok) { throw new Error(ErrorFormatter.authentication(`${response.status} ${response.statusText}`)); } const data = (await response.json()) as { token: string }; this.token = data.token; this.tokenExpiry = new Date(Date.now() + this.config.tokenExpiry * 1000); // Convert seconds to milliseconds logger.debug('Authentication successful'); } async getToken(): Promise<string> { if (this.token === null || this.token === undefined || this.token === '' || this.tokenExpiry === null || this.tokenExpiry === undefined || this.tokenExpiry <= new Date()) { await this.authenticate(); } if (this.token === null || this.token === undefined || this.token === '') { throw new Error(ErrorFormatter.authentication('token not available after authentication')); } return this.token; } }