import { FastMCP } from "fastmcp";
import path from "path";
import dotenv from "dotenv";
import { fileURLToPath } from "url";
import fs from "fs";
import logger from "./logger.js";
import { registerTaskMasterTools } from "./tools/index.js";

// Load environment variables
dotenv.config();

// Constants
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

/**
 * Main MCP server class that integrates with Task Master
 */
class TaskMasterMCPServer {
  constructor() {
    // Get version from package.json using synchronous fs
    const packagePath = path.join(__dirname, "../../package.json");
    const packageJson = JSON.parse(fs.readFileSync(packagePath, "utf8"));

    this.options = {
      name: "Task Master MCP Server",
      version: packageJson.version,
    };

    this.server = new FastMCP(this.options);
    this.initialized = false;

    // this.server.addResource({});

    // this.server.addResourceTemplate({});

    // Bind methods
    this.init = this.init.bind(this);
    this.start = this.start.bind(this);
    this.stop = this.stop.bind(this);

    // Setup logging
    this.logger = logger;
  }

  /**
   * Initialize the MCP server with necessary tools and routes
   */
  async init() {
    if (this.initialized) return;

    // Register Task Master tools
    registerTaskMasterTools(this.server);

    this.initialized = true;

    return this;
  }

  /**
   * Start the MCP server
   */
  async start() {
    if (!this.initialized) {
      await this.init();
    }

    // Start the FastMCP server
    await this.server.start({
      transportType: "stdio",
    });

    return this;
  }

  /**
   * Stop the MCP server
   */
  async stop() {
    if (this.server) {
      await this.server.stop();
    }
  }
}

export default TaskMasterMCPServer;