transmission-rss-manager/server.js

/**
 * Transmission RSS Manager
 * Main Server Application
 */

const express = require('express');
const path = require('path');
const fs = require('fs').promises;
const bodyParser = require('body-parser');
const cors = require('cors');
const morgan = require('morgan');
const http = require('http');
const https = require('https');
const jwt = require('jsonwebtoken');
const bcrypt = require('bcrypt');
const { exec } = require('child_process');
const util = require('util');
const execAsync = util.promisify(exec);
const semver = require('semver'); // For semantic version comparison

// Import custom modules
let RssFeedManager, TransmissionClient, PostProcessor;

/**
 * Helper function to try multiple module paths
 * This function tries to require a module using different naming conventions
 * to work around issues with module resolution in different Node.js environments
 * 
 * @param {string} baseName - The base module name without extension or path
 * @returns {Object} The loaded module
 * @throws {Error} If module cannot be loaded from any path
 */
function loadModule(baseName) {
  // Generate all possible module paths
  const paths = [
    `./modules/${baseName}.js`,             // With extension
    `./modules/${baseName}`,                // Without extension
    
    // Convert hyphenated to camelCase
    `./modules/${baseName.replace(/-([a-z])/g, (_, c) => c.toUpperCase())}.js`,
    `./modules/${baseName.replace(/-([a-z])/g, (_, c) => c.toUpperCase())}`,
    
    // Convert camelCase to hyphenated
    `./modules/${baseName.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase()}.js`,
    `./modules/${baseName.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase()}`
  ];
  
  let lastError = null;
  for (const modulePath of paths) {
    try {
      return require(modulePath);
    } catch (err) {
      if (err.code !== 'MODULE_NOT_FOUND' || !err.message.includes(modulePath)) {
        // This is a real error in the module, not just not finding it
        throw err;
      }
      lastError = err;
    }
  }
  
  // If we get here, we couldn't load the module from any path
  const error = new Error(`Could not load module '${baseName}' from any path. Original error: ${lastError.message}`);
  error.original = lastError;
  throw error;
}

// Try loading modules with improved error reporting
try {
  RssFeedManager = loadModule('rss-feed-manager');
  console.log('Successfully loaded RssFeedManager module');
  
  TransmissionClient = loadModule('transmission-client');
  console.log('Successfully loaded TransmissionClient module');
  
  PostProcessor = loadModule('post-processor');
  console.log('Successfully loaded PostProcessor module');
} catch (err) {
  console.error('Fatal error loading required module:', err.message);
  console.error('Please make sure all module files exist and are valid JavaScript');
  process.exit(1);
}

// Constants and configuration
const DEFAULT_CONFIG_PATH = '/etc/transmission-rss-manager/config.json';
const FALLBACK_CONFIG_PATH = path.join(__dirname, 'config.json');
const DEFAULT_PORT = 3000;
const JWT_SECRET = process.env.JWT_SECRET || 'transmission-rss-manager-secret';
const JWT_EXPIRY = '24h';

// Get the version from package.json (single source of truth)
const PACKAGE_JSON = require('./package.json');
const APP_VERSION = PACKAGE_JSON.version;

// Create Express app
const app = express();

// Middleware
app.use(cors());
app.use(bodyParser.json());
app.use(morgan('combined'));
app.use(express.static(path.join(__dirname, 'public')));

// Application state
let config = null;
let transmissionClient = null;
let rssFeedManager = null;
let postProcessor = null;
let isInitialized = false;
let server = null;

/**
 * Initialize the application with configuration
 */
async function initializeApp() {
  try {
    // Load configuration
    config = await loadConfig();
    console.log('Configuration loaded');
    
    // Initialize transmission client
    transmissionClient = new TransmissionClient(config);
    console.log('Transmission client initialized');
    
    // Initialize RSS feed manager
    // Ensure config has the feeds property (mapped from rssFeeds)
    const rssFeedManagerConfig = {
      ...config,
      feeds: config.rssFeeds || []
    };
    rssFeedManager = new RssFeedManager(rssFeedManagerConfig);
    await rssFeedManager.start();
    console.log('RSS feed manager started');
    
    // Initialize post processor
    postProcessor = new PostProcessor(config, transmissionClient);
    
    // Start post processor if auto-processing is enabled
    if (config.autoProcessing) {
      postProcessor.start();
      console.log('Post-processor auto-started');
    } else {
      console.log('Post-processor not auto-starting (autoProcessing disabled)');
    }
    
    isInitialized = true;
    console.log('Application initialized successfully');
  } catch (error) {
    console.error('Failed to initialize application:', error);
    throw error;
  }
}

/**
 * Load configuration from file
 * @returns {Promise<Object>} Configuration object
 */
async function loadConfig() {
  try {
    // Define default configuration
    const defaultConfig = {
      version: APP_VERSION, // Use the version from package.json
      installPath: __dirname, // Store the path to the installation directory
      transmissionConfig: {
        host: 'localhost',
        port: 9091,
        username: '',
        password: '',
        path: '/transmission/rpc'
      },
      remoteConfig: {
        isRemote: false,
        directoryMapping: {}
      },
      destinationPaths: {
        movies: '/mnt/media/movies',
        tvShows: '/mnt/media/tvshows',
        music: '/mnt/media/music',
        books: '/mnt/media/books',
        magazines: '/mnt/media/magazines',
        software: '/mnt/media/software'
      },
      seedingRequirements: {
        minRatio: 1.0,
        minTimeMinutes: 60,
        checkIntervalSeconds: 300
      },
      processingOptions: {
        enableBookSorting: true,
        extractArchives: true,
        deleteArchives: true,
        createCategoryFolders: true,
        ignoreSample: true,
        ignoreExtras: true,
        renameFiles: true,
        autoReplaceUpgrades: true,
        removeDuplicates: true,
        keepOnlyBestVersion: true
      },
      rssFeeds: [],
      rssUpdateIntervalMinutes: 60,
      autoProcessing: false,
      securitySettings: {
        authEnabled: false,
        httpsEnabled: false,
        sslCertPath: "",
        sslKeyPath: "",
        users: []
      },
      port: DEFAULT_PORT,
      logLevel: "info"
    };
    
    // Try primary config location first
    try {
      // Try to read existing config from primary location
      console.log(`Trying to load config from: ${DEFAULT_CONFIG_PATH}`);
      const configData = await fs.readFile(DEFAULT_CONFIG_PATH, 'utf8');
      const loadedConfig = JSON.parse(configData);
      
      // Use recursive merge function to merge configs
      const mergedConfig = mergeConfigs(defaultConfig, loadedConfig);
      
      // If version is different, save updated config
      if (loadedConfig.version !== APP_VERSION) {
        console.log(`Updating config from version ${loadedConfig.version || 'unknown'} to ${APP_VERSION}`);
        mergedConfig.version = APP_VERSION;
        await saveConfig(mergedConfig);
      }
      
      console.log(`Config loaded from ${DEFAULT_CONFIG_PATH}`);
      return mergedConfig;
    } catch (primaryError) {
      // If file not found in primary location, try fallback location
      if (primaryError.code === 'ENOENT') {
        console.log(`Config not found at ${DEFAULT_CONFIG_PATH}, trying fallback location...`);
        
        try {
          const fallbackData = await fs.readFile(FALLBACK_CONFIG_PATH, 'utf8');
          const fallbackConfig = JSON.parse(fallbackData);
          
          // Merge configs
          const mergedConfig = mergeConfigs(defaultConfig, fallbackConfig);
          
          // If version is different, save updated config
          if (fallbackConfig.version !== APP_VERSION) {
            console.log(`Updating config from version ${fallbackConfig.version || 'unknown'} to ${APP_VERSION}`);
            mergedConfig.version = APP_VERSION;
          }
          
          // Try to save to primary location, but don't fail if we can't
          try {
            // Create directory if it doesn't exist
            await fs.mkdir(path.dirname(DEFAULT_CONFIG_PATH), { recursive: true });
            await fs.writeFile(DEFAULT_CONFIG_PATH, JSON.stringify(mergedConfig, null, 2), 'utf8');
            console.log(`Migrated config from ${FALLBACK_CONFIG_PATH} to ${DEFAULT_CONFIG_PATH}`);
          } catch (saveError) {
            console.warn(`Could not save config to ${DEFAULT_CONFIG_PATH}: ${saveError.message}`);
            console.warn('Continuing with fallback config location');
          }
          
          console.log(`Config loaded from fallback location: ${FALLBACK_CONFIG_PATH}`);
          return mergedConfig;
        } catch (fallbackError) {
          // If file not found in fallback location, create default config
          if (fallbackError.code === 'ENOENT') {
            console.log('Config file not found in either location, creating default configuration');
            
            // Try to save to primary location first
            try {
              await fs.mkdir(path.dirname(DEFAULT_CONFIG_PATH), { recursive: true });
              await fs.writeFile(DEFAULT_CONFIG_PATH, JSON.stringify(defaultConfig, null, 2), 'utf8');
              console.log(`Created default config at ${DEFAULT_CONFIG_PATH}`);
            } catch (saveError) {
              console.warn(`Could not save config to ${DEFAULT_CONFIG_PATH}: ${saveError.message}`);
              console.warn('Saving to fallback location instead');
              
              // Save to fallback location instead
              await fs.writeFile(FALLBACK_CONFIG_PATH, JSON.stringify(defaultConfig, null, 2), 'utf8');
              console.log(`Created default config at ${FALLBACK_CONFIG_PATH}`);
            }
            
            return defaultConfig;
          }
          
          // For other errors, rethrow
          throw fallbackError;
        }
      }
      
      // For other errors, rethrow
      throw primaryError;
    }
  } catch (error) {
    console.error('Error loading configuration:', error);
    throw error;
  }
}

/**
 * Recursively merge configurations
 * @param {Object} defaultConfig - Default configuration object
 * @param {Object} userConfig - User configuration object
 * @returns {Object} Merged configuration object
 */
function mergeConfigs(defaultConfig, userConfig) {
  // Create a new object to avoid modifying the originals
  const merged = {};
  
  // Add all properties from default config
  for (const key in defaultConfig) {
    // If property exists in user config
    if (key in userConfig) {
      // If both are objects (not arrays or null), recursively merge
      if (
        typeof defaultConfig[key] === 'object' && 
        defaultConfig[key] !== null && 
        !Array.isArray(defaultConfig[key]) &&
        typeof userConfig[key] === 'object' && 
        userConfig[key] !== null && 
        !Array.isArray(userConfig[key])
      ) {
        merged[key] = mergeConfigs(defaultConfig[key], userConfig[key]);
      } else {
        // Use user value
        merged[key] = userConfig[key];
      }
    } else {
      // Property doesn't exist in user config, use default
      merged[key] = defaultConfig[key];
    }
  }
  
  // Add any properties from user config that aren't in default
  for (const key in userConfig) {
    if (!(key in defaultConfig)) {
      merged[key] = userConfig[key];
    }
  }
  
  return merged;
}

/**
 * Save configuration to file
 * @param {Object} config - Configuration object
 * @returns {Promise<void>}
 */
async function saveConfig(config) {
  try {
    // Always try to save to the primary config location first
    try {
      // Make sure directory exists
      await fs.mkdir(path.dirname(DEFAULT_CONFIG_PATH), { recursive: true });
      await fs.writeFile(DEFAULT_CONFIG_PATH, JSON.stringify(config, null, 2), 'utf8');
      console.log(`Configuration saved to ${DEFAULT_CONFIG_PATH}`);
      return;
    } catch (primaryError) {
      console.warn(`Could not save config to ${DEFAULT_CONFIG_PATH}: ${primaryError.message}`);
      console.warn('Trying fallback location...');
      
      // If we couldn't save to the primary location, try the fallback
      await fs.writeFile(FALLBACK_CONFIG_PATH, JSON.stringify(config, null, 2), 'utf8');
      console.log(`Configuration saved to fallback location: ${FALLBACK_CONFIG_PATH}`);
    }
  } catch (error) {
    console.error('Error saving configuration:', error);
    throw error;
  }
}

/**
 * Start the server
 */
async function startServer() {
  try {
    // Initialize the application
    await initializeApp();
    
    // Determine port
    const port = config.port || process.env.PORT || DEFAULT_PORT;
    
    // Create server based on configuration
    if (config.securitySettings?.httpsEnabled && 
        config.securitySettings?.sslCertPath && 
        config.securitySettings?.sslKeyPath) {
      try {
        const sslOptions = {
          key: await fs.readFile(config.securitySettings.sslKeyPath),
          cert: await fs.readFile(config.securitySettings.sslCertPath)
        };
        
        server = https.createServer(sslOptions, app);
        console.log('HTTPS server created');
      } catch (error) {
        console.error('Error creating HTTPS server, falling back to HTTP:', error);
        server = http.createServer(app);
      }
    } else {
      server = http.createServer(app);
      console.log('HTTP server created');
    }
    
    // Start the server
    server.listen(port, () => {
      console.log(`Transmission RSS Manager server running on port ${port}`);
    });
  } catch (error) {
    console.error('Failed to start server:', error);
    process.exit(1);
  }
}

// Authentication middleware
function authenticateJWT(req, res, next) {
  // Skip authentication if not enabled
  if (!config.securitySettings?.authEnabled) {
    return next();
  }
  
  // Get token from header
  const authHeader = req.headers.authorization;
  if (!authHeader) {
    return res.status(401).json({ success: false, message: 'Authentication required' });
  }
  
  const token = authHeader.split(' ')[1];
  if (!token) {
    return res.status(401).json({ success: false, message: 'Authentication token required' });
  }
  
  // Verify token
  jwt.verify(token, JWT_SECRET, (err, user) => {
    if (err) {
      return res.status(403).json({ success: false, message: 'Invalid or expired token' });
    }
    
    req.user = user;
    next();
  });
}

// API Routes

// Status endpoint
app.get('/api/status', authenticateJWT, async (req, res) => {
  try {
    if (!isInitialized) {
      return res.status(503).json({
        success: false,
        message: 'Application is initializing, please try again'
      });
    }
    
    // Get Transmission connection status
    const transmissionStatus = await transmissionClient.getStatus();
    
    // Return status information
    res.json({
      success: true,
      status: 'running',
      version: APP_VERSION, // Use the dynamic APP_VERSION from package.json
      transmissionConnected: transmissionStatus.connected,
      transmissionVersion: transmissionStatus.version,
      transmissionStats: {
        downloadSpeed: transmissionStatus.downloadSpeed,
        uploadSpeed: transmissionStatus.uploadSpeed,
        activeTorrentCount: transmissionStatus.activeTorrentCount,
        torrentCount: transmissionStatus.torrentCount
      },
      rssFeedManagerActive: !!rssFeedManager.updateIntervalId,
      postProcessorActive: !!postProcessor.processIntervalId,
      config: {
        autoProcessing: config.autoProcessing,
        rssEnabled: Array.isArray(config.rssFeeds) && config.rssFeeds.length > 0
      }
    });
  } catch (error) {
    console.error('Error getting status:', error);
    res.status(500).json({
      success: false,
      message: `Error getting status: ${error.message}`
    });
  }
});

// Configuration endpoint
app.get('/api/config', authenticateJWT, (req, res) => {
  // Return configuration (remove sensitive information)
  const sanitizedConfig = { ...config };
  
  // Remove passwords from response
  if (sanitizedConfig.transmissionConfig) {
    delete sanitizedConfig.transmissionConfig.password;
  }
  
  if (sanitizedConfig.securitySettings?.users) {
    sanitizedConfig.securitySettings.users = sanitizedConfig.securitySettings.users.map(user => ({
      ...user,
      password: undefined
    }));
  }
  
  res.json(sanitizedConfig);
});

app.post('/api/config', authenticateJWT, async (req, res) => {
  try {
    // Merge the new config with the existing one
    const newConfig = { ...config, ...req.body };
    
    // Preserve existing Transmission configuration values when not explicitly provided
    if (newConfig.transmissionConfig && config.transmissionConfig) {
      // First create a copy of the existing configuration
      const preservedTransConfig = { ...config.transmissionConfig };
      
      // Only update values that are explicitly provided and not empty
      if (!req.body.transmissionConfig?.host) {
        newConfig.transmissionConfig.host = preservedTransConfig.host;
      }
      
      if (!req.body.transmissionConfig?.port) {
        newConfig.transmissionConfig.port = preservedTransConfig.port;
      }
      
      if (!req.body.transmissionConfig?.path) {
        newConfig.transmissionConfig.path = preservedTransConfig.path;
      }
      
      if (!req.body.transmissionConfig?.username) {
        newConfig.transmissionConfig.username = preservedTransConfig.username;
      }
      
      // Always preserve password if not provided
      if (!newConfig.transmissionConfig.password) {
        newConfig.transmissionConfig.password = preservedTransConfig.password;
      }
    }
    
    // Preserve remote configuration settings if not explicitly provided
    if (newConfig.remoteConfig && config.remoteConfig) {
      // Make sure isRemote setting is preserved if not explicitly set
      if (req.body.remoteConfig?.isRemote === undefined) {
        newConfig.remoteConfig.isRemote = config.remoteConfig.isRemote;
      }
      
      // Preserve directory mappings if not provided
      if (!req.body.remoteConfig?.directoryMapping && config.remoteConfig.directoryMapping) {
        newConfig.remoteConfig.directoryMapping = { ...config.remoteConfig.directoryMapping };
      }
    }
    
    // Keep user passwords
    if (newConfig.securitySettings?.users && config.securitySettings?.users) {
      newConfig.securitySettings.users = newConfig.securitySettings.users.map(newUser => {
        const existingUser = config.securitySettings.users.find(u => u.username === newUser.username);
        
        if (existingUser && !newUser.password) {
          return { ...newUser, password: existingUser.password };
        }
        
        return newUser;
      });
    }
    
    // Save the updated config
    await saveConfig(newConfig);
    
    // Update the application state
    config = newConfig;
    
    // Restart components if necessary
    if (rssFeedManager) {
      rssFeedManager.stop();
      rssFeedManager = new RssFeedManager(config);
      await rssFeedManager.start();
    }
    
    if (transmissionClient) {
      transmissionClient = new TransmissionClient(config);
    }
    
    if (postProcessor) {
      postProcessor.stop();
      postProcessor = new PostProcessor(config, transmissionClient);
      
      if (config.autoProcessing) {
        postProcessor.start();
      }
    }
    
    res.json({
      success: true,
      message: 'Configuration updated successfully'
    });
  } catch (error) {
    console.error('Error updating configuration:', error);
    res.status(500).json({
      success: false,
      message: `Error updating configuration: ${error.message}`
    });
  }
});

// RSS Feed API
app.get('/api/rss/feeds', authenticateJWT, (req, res) => {
  try {
    const feeds = rssFeedManager.getAllFeeds();
    res.json({
      success: true,
      data: feeds
    });
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error getting RSS feeds: ${error.message}`
    });
  }
});

app.post('/api/rss/feeds', authenticateJWT, async (req, res) => {
  try {
    const feed = req.body;
    const newFeed = rssFeedManager.addFeed(feed);
    
    res.json({
      success: true,
      message: 'RSS feed added successfully',
      data: newFeed
    });
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error adding RSS feed: ${error.message}`
    });
  }
});

app.put('/api/rss/feeds/:id', authenticateJWT, async (req, res) => {
  try {
    const feedId = req.params.id;
    const updates = req.body;
    
    const result = rssFeedManager.updateFeedConfig(feedId, updates);
    
    if (result) {
      res.json({
        success: true,
        message: 'RSS feed updated successfully'
      });
    } else {
      res.status(404).json({
        success: false,
        message: 'RSS feed not found'
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error updating RSS feed: ${error.message}`
    });
  }
});

app.delete('/api/rss/feeds/:id', authenticateJWT, async (req, res) => {
  try {
    const feedId = req.params.id;
    const result = rssFeedManager.removeFeed(feedId);
    
    if (result) {
      res.json({
        success: true,
        message: 'RSS feed deleted successfully'
      });
    } else {
      res.status(404).json({
        success: false,
        message: 'RSS feed not found'
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error deleting RSS feed: ${error.message}`
    });
  }
});

app.get('/api/rss/items', authenticateJWT, (req, res) => {
  try {
    let items;
    const filter = req.query.filter;
    
    if (filter === 'undownloaded') {
      items = rssFeedManager.getUndownloadedItems();
    } else {
      items = rssFeedManager.getAllItems();
    }
    
    res.json({
      success: true,
      data: items
    });
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error getting RSS items: ${error.message}`
    });
  }
});

app.post('/api/rss/download', authenticateJWT, async (req, res) => {
  try {
    const { itemId } = req.body;
    
    if (!itemId) {
      return res.status(400).json({
        success: false,
        message: 'Item ID is required'
      });
    }
    
    // Find the item
    const items = rssFeedManager.getAllItems();
    const item = items.find(i => i.id === itemId);
    
    if (!item) {
      return res.status(404).json({
        success: false,
        message: 'Item not found'
      });
    }
    
    // Download the item
    const result = await rssFeedManager.downloadItem(item, transmissionClient.client);
    
    if (result.success) {
      res.json({
        success: true,
        message: 'Item added to Transmission',
        data: result.result
      });
    } else {
      res.status(500).json({
        success: false,
        message: result.message
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error downloading item: ${error.message}`
    });
  }
});

app.post('/api/rss/update', authenticateJWT, async (req, res) => {
  try {
    const result = await rssFeedManager.updateAllFeeds();
    
    res.json({
      success: true,
      message: 'RSS feeds updated successfully',
      data: result
    });
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error updating RSS feeds: ${error.message}`
    });
  }
});

// Transmission API
app.get('/api/transmission/torrents', authenticateJWT, async (req, res) => {
  try {
    const result = await transmissionClient.getTorrents();
    
    if (result.success) {
      res.json({
        success: true,
        data: result.torrents
      });
    } else {
      res.status(500).json({
        success: false,
        message: result.error
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error getting torrents: ${error.message}`
    });
  }
});

app.post('/api/transmission/add', authenticateJWT, async (req, res) => {
  try {
    const { url } = req.body;
    
    if (!url) {
      return res.status(400).json({
        success: false,
        message: 'URL is required'
      });
    }
    
    const result = await transmissionClient.addTorrent(url);
    
    if (result.success) {
      res.json({
        success: true,
        message: 'Torrent added successfully',
        data: result
      });
    } else {
      res.status(500).json({
        success: false,
        message: result.error
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error adding torrent: ${error.message}`
    });
  }
});

app.post('/api/transmission/start', authenticateJWT, async (req, res) => {
  try {
    const { ids } = req.body;
    
    if (!ids) {
      return res.status(400).json({
        success: false,
        message: 'Torrent ID(s) required'
      });
    }
    
    const result = await transmissionClient.startTorrents(ids);
    
    if (result.success) {
      res.json({
        success: true,
        message: result.message
      });
    } else {
      res.status(500).json({
        success: false,
        message: result.error
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error starting torrent: ${error.message}`
    });
  }
});

app.post('/api/transmission/stop', authenticateJWT, async (req, res) => {
  try {
    const { ids } = req.body;
    
    if (!ids) {
      return res.status(400).json({
        success: false,
        message: 'Torrent ID(s) required'
      });
    }
    
    const result = await transmissionClient.stopTorrents(ids);
    
    if (result.success) {
      res.json({
        success: true,
        message: result.message
      });
    } else {
      res.status(500).json({
        success: false,
        message: result.error
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error stopping torrent: ${error.message}`
    });
  }
});

app.post('/api/transmission/remove', authenticateJWT, async (req, res) => {
  try {
    const { ids, deleteLocalData } = req.body;
    
    if (!ids) {
      return res.status(400).json({
        success: false,
        message: 'Torrent ID(s) required'
      });
    }
    
    const result = await transmissionClient.removeTorrents(ids, deleteLocalData);
    
    if (result.success) {
      res.json({
        success: true,
        message: result.message
      });
    } else {
      res.status(500).json({
        success: false,
        message: result.error
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error removing torrent: ${error.message}`
    });
  }
});

app.post('/api/transmission/test', authenticateJWT, async (req, res) => {
  try {
    const { host, port, username, password, path: rpcPath } = req.body;
    
    // Debug info
    console.log('Testing Transmission connection with params:', {
      host: host || 'from config',
      port: port || 'from config',
      username: username ? 'provided' : 'from config',
      path: rpcPath || 'from config',
    });
    
    // Create a temporary client for testing
    const testConfig = {
      transmissionConfig: {
        host: host || config.transmissionConfig.host,
        port: port || config.transmissionConfig.port,
        username: username || config.transmissionConfig.username,
        password: password || config.transmissionConfig.password,
        path: rpcPath || config.transmissionConfig.path
      },
      // Also include remoteConfig to ensure proper remote handling
      remoteConfig: {
        // If host is provided and different from localhost, set isRemote to true
        isRemote: host && host !== 'localhost' ? true : config.remoteConfig?.isRemote || false,
        directoryMapping: config.remoteConfig?.directoryMapping || {}
      }
    };
    
    // Log the actual test config (without password)
    console.log('Test configuration:', {
      host: testConfig.transmissionConfig.host,
      port: testConfig.transmissionConfig.port,
      path: testConfig.transmissionConfig.path,
      isRemote: testConfig.remoteConfig.isRemote
    });
    
    try {
      const testClient = new TransmissionClient(testConfig);
      const status = await testClient.getStatus();
      
      if (status.connected) {
        res.json({
          success: true,
          message: 'Successfully connected to Transmission server',
          data: {
            version: status.version,
            rpcVersion: status.rpcVersion
          }
        });
      } else {
        res.status(400).json({
          success: false,
          message: `Failed to connect: ${status.error}`
        });
      }
    } catch (error) {
      console.error('Error testing Transmission connection:', error);
      res.status(500).json({
        success: false,
        message: `Error testing connection: ${error.message}`
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Connection test failed: ${error.message}`
    });
  }
});

// Post-Processor API
app.post('/api/post-processor/start', authenticateJWT, (req, res) => {
  try {
    const result = postProcessor.start();
    
    if (result) {
      res.json({
        success: true,
        message: 'Post-processor started successfully'
      });
    } else {
      res.status(400).json({
        success: false,
        message: 'Post-processor is already running'
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error starting post-processor: ${error.message}`
    });
  }
});

app.post('/api/post-processor/stop', authenticateJWT, (req, res) => {
  try {
    const result = postProcessor.stop();
    
    if (result) {
      res.json({
        success: true,
        message: 'Post-processor stopped successfully'
      });
    } else {
      res.status(400).json({
        success: false,
        message: 'Post-processor is not running'
      });
    }
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error stopping post-processor: ${error.message}`
    });
  }
});

// Media Library API
app.get('/api/media/library', authenticateJWT, async (req, res) => {
  try {
    const query = req.query.query;
    const library = await getMediaLibrary(query);
    
    res.json({
      success: true,
      data: library
    });
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Error getting media library: ${error.message}`
    });
  }
});

/**
 * Get media library content
 * @param {string} searchQuery - Optional search query
 * @returns {Promise<Object>} Media library content
 */
async function getMediaLibrary(searchQuery) {
  const library = {
    movies: [],
    tvShows: [],
    music: [],
    books: [],
    magazines: [],
    software: []
  };
  
  // Get destination paths from config
  const destinations = config.destinationPaths || {};
  
  // Process each category
  for (const [category, destinationPath] of Object.entries(destinations)) {
    if (!destinationPath || typeof destinationPath !== 'string') {
      continue;
    }
    
    try {
      // Check if directory exists
      await fs.access(destinationPath);
      
      // Get directory listing
      const files = await fs.readdir(destinationPath, { withFileTypes: true });
      
      // Process each file/directory
      for (const file of files) {
        const fullPath = path.join(destinationPath, file.name);
        
        try {
          const stats = await fs.stat(fullPath);
          
          // Create an item object
          const item = {
            name: file.name,
            path: fullPath,
            isDirectory: stats.isDirectory(),
            size: stats.size,
            added: stats.ctime.toISOString()
          };
          
          // Filter by search query if provided
          if (searchQuery && !file.name.toLowerCase().includes(searchQuery.toLowerCase())) {
            continue;
          }
          
          // Add to the appropriate category
          switch (category) {
            case 'movies':
              library.movies.push(item);
              break;
            case 'tvShows':
              library.tvShows.push(item);
              break;
            case 'music':
              library.music.push(item);
              break;
            case 'books':
              library.books.push(item);
              break;
            case 'magazines':
              library.magazines.push(item);
              break;
            case 'software':
              library.software.push(item);
              break;
          }
        } catch (itemError) {
          console.error(`Error processing media library item ${fullPath}:`, itemError);
        }
      }
      
      // Sort by most recently added
      const sortKey = category === 'tvShows' ? 'tvShows' : category;
      if (Array.isArray(library[sortKey])) {
        library[sortKey].sort((a, b) => new Date(b.added) - new Date(a.added));
      }
    } catch (error) {
      console.error(`Error accessing media directory ${destinationPath}:`, error);
    }
  }
  
  return library;
}

// Authentication API
app.post('/api/auth/login', async (req, res) => {
  try {
    // Skip authentication if not enabled
    if (!config.securitySettings?.authEnabled) {
      return res.json({
        success: true,
        token: jwt.sign({ username: 'admin' }, JWT_SECRET, { expiresIn: JWT_EXPIRY }),
        user: { username: 'admin', role: 'admin' }
      });
    }
    
    const { username, password } = req.body;
    
    if (!username || !password) {
      return res.status(400).json({
        success: false,
        message: 'Username and password are required'
      });
    }
    
    // Find user
    const users = config.securitySettings?.users || [];
    const user = users.find(u => u.username === username);
    
    if (!user) {
      return res.status(401).json({
        success: false,
        message: 'Invalid credentials'
      });
    }
    
    // Check password
    let passwordMatch = false;
    
    if (user.password.startsWith('$2')) {
      // Bcrypt hashed password
      passwordMatch = await bcrypt.compare(password, user.password);
    } else {
      // Legacy plain text password
      passwordMatch = password === user.password;
      
      // Update to hashed password
      if (passwordMatch) {
        user.password = await bcrypt.hash(password, 10);
        await saveConfig(config);
      }
    }
    
    if (!passwordMatch) {
      return res.status(401).json({
        success: false,
        message: 'Invalid credentials'
      });
    }
    
    // Generate token
    const token = jwt.sign(
      { username: user.username, role: user.role || 'user' },
      JWT_SECRET,
      { expiresIn: JWT_EXPIRY }
    );
    
    res.json({
      success: true,
      token,
      user: {
        username: user.username,
        role: user.role || 'user'
      }
    });
  } catch (error) {
    res.status(500).json({
      success: false,
      message: `Authentication error: ${error.message}`
    });
  }
});

app.get('/api/auth/validate', authenticateJWT, (req, res) => {
  res.json({
    success: true,
    user: req.user
  });
});

// System status and update endpoints
app.get('/api/system/status', authenticateJWT, async (req, res) => {
  try {
    // Get system uptime
    const uptimeSeconds = Math.floor(process.uptime());
    const hours = Math.floor(uptimeSeconds / 3600);
    const minutes = Math.floor((uptimeSeconds % 3600) / 60);
    const seconds = uptimeSeconds % 60;
    const uptime = `${hours}h ${minutes}m ${seconds}s`;
    
    // Check transmission connection
    let transmissionStatus = 'Connected';
    try {
      const status = await transmissionClient.getStatus();
      if (!status.connected) {
        transmissionStatus = 'Disconnected';
      }
    } catch (err) {
      transmissionStatus = 'Disconnected';
    }
    
    res.json({
      status: 'success',
      data: {
        version: APP_VERSION,
        uptime,
        transmissionStatus
      }
    });
  } catch (error) {
    console.error('Error getting system status:', error);
    res.status(500).json({
      status: 'error',
      message: 'Failed to get system status'
    });
  }
});

// Check for updates
app.get('/api/system/check-updates', authenticateJWT, async (req, res) => {
  try {
    // Check if git is available and if this is a git repository
    const isGitRepo = fs.existsSync(path.join(__dirname, '.git'));
    if (!isGitRepo) {
      return res.json({
        status: 'error',
        message: 'This installation is not set up for updates. Please use the bootstrap installer.'
      });
    }
    
    // Get current version
    const currentVersion = APP_VERSION;
    
    // Check for test mode flag which forces update availability for testing
    const testMode = req.query.test === 'true';
    
    if (testMode) {
      // In test mode, always return that an update is available
      return res.json({
        status: 'success',
        data: {
          updateAvailable: true,
          currentVersion,
          remoteVersion: '2.1.0-test',
          commitsBehind: 1,
          testMode: true
        }
      });
    }
    
    try {
      // Normal mode - fetch latest updates without applying them
      await execAsync('git fetch');
      
      // Check if we're behind the remote repository
      const { stdout } = await execAsync('git rev-list HEAD..origin/main --count');
      const behindCount = parseInt(stdout.trim());
      
      if (behindCount > 0) {
        // Get the new version from the remote package.json
        const { stdout: remotePackageJson } = await execAsync('git show origin/main:package.json');
        const remotePackage = JSON.parse(remotePackageJson);
        const remoteVersion = remotePackage.version;
        
        // Compare versions semantically - only consider it an update if remote version is higher
        const isNewerVersion = semver.gt(remoteVersion, currentVersion);
        
        return res.json({
          status: 'success',
          data: {
            updateAvailable: isNewerVersion,
            currentVersion,
            remoteVersion,
            commitsBehind: behindCount,
            newerVersion: isNewerVersion
          }
        });
      } else {
        return res.json({
          status: 'success',
          data: {
            updateAvailable: false,
            currentVersion
          }
        });
      }
    } catch (gitError) {
      console.error('Git error checking for updates:', gitError);
      
      // Even if git commands fail, return a valid response with error information
      return res.json({
        status: 'error',
        message: 'Error checking git repository: ' + gitError.message,
        data: {
          updateAvailable: false,
          currentVersion,
          error: true,
          errorDetails: gitError.message
        }
      });
    }
  } catch (error) {
    console.error('Error checking for updates:', error);
    res.status(500).json({
      status: 'error',
      message: 'Failed to check for updates: ' + error.message
    });
  }
});

// Apply updates
app.post('/api/system/update', authenticateJWT, async (req, res) => {
  try {
    // Check if git is available and if this is a git repository
    const isGitRepo = fs.existsSync(path.join(__dirname, '.git'));
    if (!isGitRepo) {
      return res.status(400).json({
        status: 'error',
        message: 'This installation is not set up for updates. Please use the bootstrap installer.'
      });
    }
    
    // Run the update script
    const updateScriptPath = path.join(__dirname, 'scripts', 'update.sh');
    
    // Make sure the update script is executable
    await execAsync(`chmod +x ${updateScriptPath}`);
    
    // Execute the update script
    const { stdout, stderr } = await execAsync(updateScriptPath);
    
    // If we get here, the update was successful
    // The service will be restarted by the update script
    res.json({
      status: 'success',
      message: 'Update applied successfully. The service will restart.',
      data: {
        output: stdout,
        errors: stderr
      }
    });
  } catch (error) {
    console.error('Error applying update:', error);
    res.status(500).json({
      status: 'error',
      message: 'Failed to apply update: ' + error.message
    });
  }
});

// Catch-all route for SPA
app.get('*', (req, res) => {
  res.sendFile(path.join(__dirname, 'public', 'index.html'));
});

// Start the server
startServer();

// Handle process termination
process.on('SIGTERM', () => {
  console.log('SIGTERM received, shutting down gracefully');
  
  if (server) {
    server.close(() => {
      console.log('Server closed');
      process.exit(0);
    });
  } else {
    process.exit(0);
  }
});

process.on('SIGINT', () => {
  console.log('SIGINT received, shutting down gracefully');
  
  if (server) {
    server.close(() => {
      console.log('Server closed');
      process.exit(0);
    });
  } else {
    process.exit(0);
  }
});

module.exports = app;