/*
 * preload.js — the only bridge between the renderer and Node.
 * Nothing here takes a path or a command from the page; every call is a fixed
 * verb with no free-form arguments beyond a config patch.
 */
'use strict';

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

contextBridge.exposeInMainWorld('engineHost', {
  getConfig:    ()      => ipcRenderer.invoke('config:get'),
  setConfig:    (patch) => ipcRenderer.invoke('config:set', patch),
  micStatus:    ()      => ipcRenderer.invoke('mic:status'),
  askMic:       ()      => ipcRenderer.invoke('mic:ask'),
  openPrivacy:  ()      => ipcRenderer.invoke('app:openPrivacy'),
  cacheInfo:    ()      => ipcRenderer.invoke('app:cacheInfo'),
  revealCache:  ()      => ipcRenderer.invoke('app:revealCache'),
  copyText:     (text)  => ipcRenderer.invoke('app:copy', text),
  setLive:      (live)  => ipcRenderer.send('engine:live', !!live),
  logLine:      (line)  => ipcRenderer.send('log:line', String(line || '')),

  /* Translation lives in the main process; these are its only two verbs. */
  mtEnsure:     ()      => ipcRenderer.invoke('mt:ensure'),
  settingsExport: ()    => ipcRenderer.invoke('settings:export'),
  settingsImport: ()    => ipcRenderer.invoke('settings:import'),
  audioDevices: ()      => ipcRenderer.invoke('audio:devices'),
  modelsCached: (id)    => ipcRenderer.invoke('models:cached', id),
  mtTranslate:  (req)   => ipcRenderer.invoke('mt:translate', req),
  mtTranslateMulti: (req) => ipcRenderer.invoke('mt:translateMulti', req),
  onMtProgress: (fn)    => ipcRenderer.on('mt:progress', (_e, p) => fn(p)),
  onMtDown:     (fn)    => ipcRenderer.on('mt:down', (_e, info) => fn(info)),

  /* The congregation server runs inside this app; these describe it. */
  localInfo:    ()      => ipcRenderer.invoke('local:info'),
  onServerUp:   (fn)    => ipcRenderer.on('server:up', (_e, info) => fn(info)),
  onServerDown: (fn)    => ipcRenderer.on('server:down', () => fn()),

  /* Share to the internet: a Cloudflare quick tunnel for livestream viewers. */
  tunnelStart:   ()   => ipcRenderer.invoke('tunnel:start'),
  tunnelStop:    ()   => ipcRenderer.invoke('tunnel:stop'),
  tunnelStatus:  ()   => ipcRenderer.invoke('tunnel:status'),
  onTunnel:      (fn) => ipcRenderer.on('tunnel:status', (_e, s) => fn(s)),

  /* Built-in voices: this Mac speaks, and the phones play what it sends. */
  ttsInfo:       ()      => ipcRenderer.invoke('tts:info'),
  ttsSpeak:      (req)   => ipcRenderer.invoke('tts:speak', req),
  ttsPreload:    (langs) => ipcRenderer.invoke('tts:preload', langs),
  /* Audition one specific voice, and save the per-language choices. */
  ttsAudition:   (req)   => ipcRenderer.invoke('tts:audition', req),
  ttsSetVoices:  (c)     => ipcRenderer.invoke('tts:setVoices', c),
  ttsSetListenerVoices: (m) => ipcRenderer.invoke('tts:setListenerVoices', m),
  onTtsReady:    (fn)    => ipcRenderer.on('tts:ready', (_e, i) => fn(i)),
  onTtsProgress: (fn)    => ipcRenderer.on('tts:progress', (_e, p) => fn(p)),
  onTtsCloud:    (fn)    => ipcRenderer.on('tts:cloud', (_e, s) => fn(s)),
  onLocalVoices: (fn)    => ipcRenderer.on('localvoices:status', (_e, s) => fn(s)),
  localVoicesStatus: ()  => ipcRenderer.invoke('localvoices:status')
});