#!/usr/bin/env node
/**
 * Memento MCP Server - Stdio Transport
 *
 * For local CLI usage. Connects directly to the SQLite database.
 *
 * Environment variables:
 *   DATABASE_URL  - Prisma database URL (default: ../../keep-notes/prisma/dev.db)
 *   USER_ID       - Optional user ID to filter data
 *   APP_BASE_URL  - Optional Next.js app URL for AI features (default: http://localhost:3000)
 */

import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import { PrismaClient } from '../keep-notes/prisma/client-generated/index.js';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';
import { registerTools } from './tools.js';

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

// Database - requires DATABASE_URL environment variable
const databaseUrl = process.env.DATABASE_URL;
if (!databaseUrl) throw new Error('DATABASE_URL is required');

const prisma = new PrismaClient({
  datasources: {
    db: { url: databaseUrl },
  },
});

const server = new Server(
  {
    name: 'memento-mcp-server',
    version: '3.0.0',
  },
  {
    capabilities: { tools: {} },
  },
);

const appBaseUrl = process.env.APP_BASE_URL || 'http://localhost:3000';

registerTools(server, prisma, {
  userId: process.env.USER_ID || null,
  appBaseUrl,
});

async function main() {
  const transport = new StdioServerTransport();
  await server.connect(transport);
  console.error(`Memento MCP Server v3.0.0 (stdio)`);
  console.error(`Database: ${databaseUrl}`);
  console.error(`App URL: ${appBaseUrl}`);
  console.error(`User filter: ${process.env.USER_ID || 'none (all data)'}`);
}

main().catch((error) => {
  console.error('Server error:', error);
  process.exit(1);
});

process.on('SIGINT', async () => {
  await prisma.$disconnect();
  process.exit(0);
});