const { contextBridge, ipcRenderer } = require('electron');

contextBridge.exposeInMainWorld('electronAPI', {
  // Platform info (synchronous — available immediately without IPC)
  platform: process.platform,
  arch: process.arch,
  // Persistent config (server URL, session token)
  config: {
    get: (key) => ipcRenderer.invoke('config:get', key),
    set: (key, value) => ipcRenderer.invoke('config:set', key, value),
    delete: (key) => ipcRenderer.invoke('config:delete', key),
  },
  // Text-to-speech via Piper
  tts: {
    speak: (text) => ipcRenderer.invoke('tts:speak', text),
    stop: () => ipcRenderer.invoke('tts:stop'),
  },
  // Speech-to-text via whisper.cpp
  stt: {
    transcribe: (audioBase64) => ipcRenderer.invoke('stt:transcribe', audioBase64),
  },
  // Model downloads
  download: {
    start: (type) => ipcRenderer.invoke('download:start', type),
    check: (type) => ipcRenderer.invoke('download:check', type),
    status: () => ipcRenderer.invoke('download:status'),
    onProgress: (callback) => {
      const listener = (_, data) => callback(data);
      ipcRenderer.on('download:progress', listener);
      // Returns a cleanup function so callers can remove the listener
      return () => ipcRenderer.removeListener('download:progress', listener);
    },
  },
});