const { ipcRenderer, webFrame } = require('electron');
const { join } = require('path');
require('module-alias/register');

function exposeGlobal (name, toMainWorld = false) {
  Object.defineProperty(toMainWorld ? webFrame.top.context : window, name, {
    get: () => (toMainWorld ? window : webFrame.top.context)[name],
    set: (v) => (toMainWorld ? window : webFrame.top.context)[name] = v
  });
}

function fixDocument () {
  const realDoc = webFrame.top.context.document;
  let getI = 0;
  let setI = 0;

  /**
   * Allow accessing React root container.
   */
  Object.defineProperty(HTMLElement.prototype, '_reactRootContainer', {
    get () {
      getI++;
      this.setAttribute('vz-react-root-get', getI);
      const elem = realDoc.querySelector(`[vz-react-root-get='${getI}']`);
      elem?.removeAttribute('vz-react-root-get');
      return elem?._reactRootContainer;
    },
    set (prop, value) {
      setI++;
      this.setAttribute('vz-react-root-set', setI);
      const elem = realDoc.querySelector(`[vz-react-root-set='${setI}']`);
      elem?.removeAttribute('vz-react-root-set');
      return elem && (elem[prop] = value);
    }
  });
}

/**
 * Bypass the context isolation.
 */
exposeGlobal('DiscordSentry');
exposeGlobal('__SENTRY__');
exposeGlobal('GLOBAL_ENV');
exposeGlobal('platform');
exposeGlobal('_');
exposeGlobal('webpackChunkdiscord_app');
exposeGlobal('WebSocket', true);

fixDocument();

require('@vizality/compilers');
require('./renderer');

(() => {
  const { Module } = require('module');
  const extensions = [ '.jsx', '.js', '.ts', '.tsx' ];
  for (const ext of extensions) {
    const oldRequireExt = Module._extensions[ext];
    Module._extensions[ext] = (module, filename) => {
      const srcDir = join(__dirname, '..', 'renderer', 'src');
      const addonsDir = join(__dirname, '..', 'addons');
      if ((filename.indexOf(srcDir) &&
          filename.indexOf(addonsDir)) ||
          filename.indexOf('node_modules') !== -1
      ) {
        return oldRequireExt(module, filename);
      }
      const compiler = new (require(`@vizality/compilers/${ext.substring(1).toUpperCase()}`))(filename);
      const compiled = compiler.compile();
      module._compile(compiled, filename);
    };
  }
})();

/**
 * Instantiate Vizality.
 */
const Vizality = require('../renderer/src');
window.vizality = new Vizality();

/**
 * Expose some global objects
 */
exposeGlobal('vizality', true);
exposeGlobal('discord', true);
exposeGlobal('$vz', true);
exposeGlobal('$discord', true);
exposeGlobal('require', true);

// https://github.com/electron/electron/issues/9047
if (process.platform === 'darwin' && !process.env.PATH.includes('/usr/local/bin')) {
  process.env.PATH += ':/usr/local/bin';
}

/**
 * Discord's preload.
 */
const preload = ipcRenderer.sendSync('VIZALITY_GET_PRELOAD');
if (preload) {
  /**
   * Restore original preload for future windows.
   */
  process._linkedBinding('electron_common_command_line').appendSwitch('preload', preload);
  require(preload);
}

/* @todo Add debug logging. */