#!/usr/bin/env node

/**
 * Project Mind MCP - Installation Helper
 * 
 * Assists with configuring Claude Desktop for Project Mind MCP.
 */

import * as fs from 'fs';
import * as path from 'path';
import * as os from 'os';

const CONFIG_PATHS = {
  windows: path.join(os.homedir(), 'AppData', 'Roaming', 'Claude', 'claude_desktop_config.json'),
  darwin: path.join(os.homedir(), 'Library', 'Application Support', 'Claude', 'claude_desktop_config.json'),
  linux: path.join(os.homedir(), '.config', 'Claude', 'claude_desktop_config.json'),
};

function getConfigPath(): string {
  const platform = os.platform();
  if (platform === 'win32') return CONFIG_PATHS.windows;
  if (platform === 'darwin') return CONFIG_PATHS.darwin;
  return CONFIG_PATHS.linux;
}

function getCurrentPath(): string {
  return path.resolve(process.cwd(), 'dist', 'index.js');
}

async function main() {
  console.log('🚀 Project Mind MCP - Installation Helper\n');

  // Get config path
  const configPath = getConfigPath();
  console.log(`📍 Configuration file: ${configPath}\n`);

  // Check if config exists
  const configExists = fs.existsSync(configPath);
  
  if (!configExists) {
    console.log('⚠️  Configuration file does not exist. Creating...\n');
    
    // Create directory if needed
    const configDir = path.dirname(configPath);
    if (!fs.existsSync(configDir)) {
      fs.mkdirSync(configDir, { recursive: true });
    }
  }

  // Read existing config or create new
  let config: any = { mcpServers: {} };
  
  if (configExists) {
    try {
      const content = fs.readFileSync(configPath, 'utf8');
      config = JSON.parse(content);
      
      if (!config.mcpServers) {
        config.mcpServers = {};
      }
      
      console.log('✅ Existing configuration found\n');
    } catch (error) {
      console.error('❌ Error reading configuration:', error);
      process.exit(1);
    }
  }

  // Check if Project Mind already configured
  if (config.mcpServers['project-mind']) {
    console.log('⚠️  Project Mind MCP is already configured:\n');
    console.log(JSON.stringify(config.mcpServers['project-mind'], null, 2));
    console.log('\nTo reconfigure, manually edit the config file or remove the existing entry.\n');
    return;
  }

  // Add Project Mind configuration
  const projectMindPath = getCurrentPath();
  config.mcpServers['project-mind'] = {
    command: 'node',
    args: [projectMindPath]
  };

  // Write configuration
  try {
    fs.writeFileSync(configPath, JSON.stringify(config, null, 2), 'utf8');
    console.log('✅ Configuration updated successfully!\n');
    console.log('📝 Project Mind MCP configuration:\n');
    console.log(JSON.stringify(config.mcpServers['project-mind'], null, 2));
    console.log('\n🔄 Next steps:');
    console.log('1. Restart Claude Desktop completely');
    console.log('2. Open a new conversation');
    console.log('3. Type: "Use Project Mind to check connection"\n');
    console.log('📚 For detailed integration guide, see: docs/INTEGRATION.md\n');
  } catch (error) {
    console.error('❌ Error writing configuration:', error);
    process.exit(1);
  }
}

main().catch(console.error);