const { execFile, execFileSync, execSync } = require('child_process');
const util = require('util');
const fs = require('fs');
const execFileAsync = util.promisify(execFile);

const SCRIPTS = {
  spotify_play:  'tell application "Spotify" to play',
  spotify_pause: 'tell application "Spotify" to pause',
  spotify_next:  'tell application "Spotify" to next track',
  spotify_prev:  'tell application "Spotify" to previous track',
  music_play:    'tell application "Music" to play',
  music_pause:   'tell application "Music" to pause',
  music_next:    'tell application "Music" to next track',
  mail_open:     'tell application "Mail" to activate',
  mail_unread:   'tell application "Mail" to return (count of (messages of inbox whose read status is false))',
  calendar_open: 'tell application "Calendar" to activate',
  notes_open:    'tell application "Notes" to activate',
  volume_up:     'set volume output volume (output volume of (get volume settings) + 10)',
  volume_down:   'set volume output volume (output volume of (get volume settings) - 10)',
  volume_mute:   'set volume output muted true',
  volume_unmute: 'set volume output muted false',
  dark_mode_on:  'tell app "System Events" to tell appearance preferences to set dark mode to true',
  dark_mode_off: 'tell app "System Events" to tell appearance preferences to set dark mode to false',
  screenshot:    'do shell script "screencapture -x ~/Desktop/fox-screenshot-$(date +%Y%m%d-%H%M%S).png"',
};

function resolveCommand(command) {
  if (SCRIPTS[command]) {
    return { type: 'applescript', script: SCRIPTS[command] };
  }
  if (command.startsWith('script:')) {
    return { type: 'applescript', script: command.slice(7) };
  }
  if (command.startsWith('open:')) {
    return { type: 'open', url: command.slice(5) };
  }
  if (command.startsWith('app:')) {
    return { type: 'app', name: command.slice(4) };
  }
  if (command.startsWith('save:')) {
    try {
      return { type: 'save', ...JSON.parse(command.slice(5)) };
    } catch {
      return { type: 'unknown' };
    }
  }
  return { type: 'unknown' };
}

async function executeMacCommand(command) {
  try {
    const resolved = resolveCommand(command);

    if (resolved.type === 'applescript') {
      const { stdout } = await execFileAsync('osascript', ['-e', resolved.script]);
      return { success: true, output: stdout.trim() };
    }
    if (resolved.type === 'open') {
      execFileSync('open', [resolved.url]);
      return { success: true, output: 'Geöffnet' };
    }
    if (resolved.type === 'app') {
      execFileSync('open', ['-a', resolved.name]);
      return { success: true, output: `${resolved.name} geöffnet` };
    }
    if (resolved.type === 'save') {
      if (resolved.filename.includes('/') || resolved.filename.includes('\\')) {
        return { success: false, output: 'Ungültiger Dateiname' };
      }
      const filePath = `${process.env.HOME}/Desktop/${resolved.filename}`;
      fs.writeFileSync(filePath, resolved.content, 'utf8');
      return { success: true, output: `Gespeichert: ${filePath}` };
    }
    return { success: false, output: 'Unbekannter Befehl' };

  } catch (err) {
    return { success: false, output: err.message };
  }
}

module.exports = { executeMacCommand, resolveCommand, SCRIPTS };