import fs from 'node:fs';
import path from 'node:path';
import os from 'node:os';

function flag(value, fallback = true) {
  if (value === undefined || value === null) return fallback;
  if (typeof value === 'string') return !['false', '0', 'off', 'no'].includes(value.trim().toLowerCase());
  return value !== false;
}

export function voiceSettings(source = null) {
  let config = source;
  if (!config) {
    config = {};
    try { config = JSON.parse(fs.readFileSync(path.join(process.env.XDG_CONFIG_HOME || path.join(os.homedir(), '.config'), 'jarvis/config.json'), 'utf8')); } catch {}
  }
  const phrase = config.wakePhrase || config.wake_phrase || 'hey jarvis';
  const aliases = Array.isArray(config.aliases) ? config.aliases : ['jarvis', 'okay jarvis'];
  return {
    command: process.env.JARVIS_WAKE_COMMAND || config.wakeCommand || config.wake_command || '',
    phrases: [phrase, ...aliases].map((item) => String(item || '').trim()).filter(Boolean),
    ttsEnabled: flag(config.ttsEnabled ?? config.tts_enabled, true),
    modelProfile: config.modelProfile || config.model_profile || 'laptop-16gb',
  };
}