// server.js - Main application server file
const express = require('express');
const bodyParser = require('body-parser');
const path = require('path');
const fs = require('fs').promises;
const cors = require('cors');
const Transmission = require('transmission');

// Import custom modules
const PostProcessor = require('./postProcessor');
const RssFeedManager = require('./rssFeedManager');

// Initialize Express app
const app = express();
const PORT = process.env.PORT || 3000;

// Load configuration
let config = {
  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',
    software: '/mnt/media/software'
  },
  seedingRequirements: {
    minRatio: 1.0,
    minTimeMinutes: 60,
    checkIntervalSeconds: 300
  },
  processingOptions: {
    extractArchives: true,
    deleteArchives: true,
    createCategoryFolders: true,
    ignoreSample: true,
    ignoreExtras: true,
    renameFiles: true,
    autoReplaceUpgrades: true,
    removeDuplicates: true,
    keepOnlyBestVersion: true
  },
  rssFeeds: [],
  rssUpdateIntervalMinutes: 60,
  autoProcessing: false
};

// Service instances
let transmissionClient = null;
let postProcessor = null;
let rssFeedManager = null;

// Save config function
async function saveConfig() {
  try {
    await fs.writeFile(
      path.join(__dirname, 'config.json'),
      JSON.stringify(config, null, 2),
      'utf8'
    );
    console.log('Configuration saved');
    return true;
  } catch (err) {
    console.error('Error saving config:', err.message);
    return false;
  }
}

// Load config function
async function loadConfig() {
  try {
    const data = await fs.readFile(path.join(__dirname, 'config.json'), 'utf8');
    const loadedConfig = JSON.parse(data);
    config = { ...config, ...loadedConfig };
    console.log('Configuration loaded');
    return true;
  } catch (err) {
    console.error('Error loading config, using defaults:', err.message);
    // Save default config
    await saveConfig();
    return false;
  }
}

// Initialize Transmission client
function initTransmission() {
  transmissionClient = new Transmission({
    host: config.transmissionConfig.host,
    port: config.transmissionConfig.port,
    username: config.transmissionConfig.username,
    password: config.transmissionConfig.password,
    url: config.transmissionConfig.path
  });
  
  console.log(`Transmission client initialized for ${config.transmissionConfig.host}:${config.transmissionConfig.port}`);
  return transmissionClient;
}

// Initialize post processor
function initPostProcessor() {
  if (postProcessor) {
    postProcessor.stop();
  }
  
  postProcessor = new PostProcessor({
    transmissionConfig: config.transmissionConfig,
    remoteConfig: config.remoteConfig,
    destinationPaths: config.destinationPaths,
    see