const { app, BrowserWindow, session, ipcMain } = require('electron');
const path = require('node:path');
const { ElectronBlocker } = require('@ghostery/adblocker-electron');
const fetch = require('cross-fetch');

const androidUA = 'Mozilla/5.0 (Linux; Android 14; Pixel 7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.164 Mobile Safari/537.36';

let historyWindow = null;

async function setupBlocker(sess) {
  try {
    const blocker = await ElectronBlocker.fromPrebuiltAdsAndTracking(fetch);
    blocker.enableBlockingInSession(sess);
    console.log('Adblocker enabled');
  } catch (err) {
    console.error('Failed to load adblocker:', err);
  }
}

const createWindow = () => {
  const win = new BrowserWindow({
    width: 1280,
    height: 800,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: false, 
      nodeIntegration: true,
      webSecurity: false,      
      webviewTag: true, 
    }
  });

  win.maximize();
  win.loadFile('src/index.html');
};

function createHistoryWindow() {
  // Focus if already opened
  if (historyWindow) {
    historyWindow.focus();
    return;
  }

  historyWindow = new BrowserWindow({
    width: 500,
    height: 650,
    title: 'Browsing History',
    autoHideMenuBar: true,
    webPreferences: {
      contextIsolation: false,
      nodeIntegration: true,
    }
  });

  historyWindow.loadFile('src/history.html');

  historyWindow.on('closed', () => {
    historyWindow = null;
  });
}

// IPC Listener to handle popup creation
ipcMain.on('open-history-window', () => {
  createHistoryWindow();
});

app.whenReady().then(async () => {
  const sess = session.defaultSession;

  sess.setUserAgent(androidUA);
  await setupBlocker(sess);

  sess.webRequest.onBeforeSendHeaders((details, callback) => {
    details.requestHeaders['User-Agent'] = androidUA;
    details.requestHeaders['Sec-CH-UA-Mobile'] = '?1';
    details.requestHeaders['Sec-CH-UA-Platform'] = '"Android"';
    callback({ requestHeaders: details.requestHeaders });
  });

  sess.webRequest.onHeadersReceived((details, callback) => {
    const responseHeaders = { ...details.responseHeaders };
    
    Object.keys(responseHeaders).forEach((key) => {
      if (['x-frame-options', 'content-security-policy'].includes(key.toLowerCase())) {
        delete responseHeaders[key];
      }
    });

    callback({
      cancel: false,
      responseHeaders: responseHeaders
    });
  });

  createWindow();

  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) createWindow();
  });
});

app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') app.quit();
});