import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { BrowserWindow, app, ipcMain, shell } from 'electron';
import started from 'electron-squirrel-startup';
import { Redis } from 'ioredis';

// Handle creating/removing shortcuts on Windows when installing/uninstalling.
if (started) {
  app.quit();
}

// Redis connection for pubsub
let redisSubscriber: Redis | null = null;

const connectRedis = () => {
  try {
    redisSubscriber = new Redis({
      host: 'bismillahdao-redis',
      port: 6379,
      lazyConnect: true,
    });

    console.log('Redis subscriber connection initialized');
  }
  catch (error) {
    console.error('Failed to initialize Redis subscriber:', error);
  }
};

const createWindow = () => {
  // Create the browser window.
  const mainWindow = new BrowserWindow({
    minHeight: 800,
    minWidth: 1080,
    maxHeight: 1080,
    maxWidth: 1920,
    height: 1024,
    width: 1280,
    titleBarStyle: 'hidden',
    webPreferences: {
      nodeIntegration: false,
      contextIsolation: true,
      preload: path.join(__dirname, 'preload.cjs'),
    },
  });

  mainWindow.setMenuBarVisibility(false);

  // Listen for maximize/unmaximize events
  mainWindow.on('maximize', () => {
    mainWindow.webContents.send('window-maximize-changed', true);
  });

  mainWindow.on('unmaximize', () => {
    mainWindow.webContents.send('window-maximize-changed', false);
  });

  mainWindow.webContents.on('will-navigate', function (event, reqUrl) {
    const requestedHost = new URL(reqUrl).host;
    const currentHost = new URL(mainWindow.webContents.getURL()).host;
    if (requestedHost && requestedHost != currentHost) {
      event.preventDefault();
      shell.openExternal(reqUrl);
    }
  });

  // Set up Redis pubsub when window is ready
  mainWindow.webContents.once('dom-ready', () => {
    setupRedisPubSub(mainWindow);
  });

  const isDev = process.env.NODE_ENV === 'development';
  // and load the index.html of the app.
  if (isDev) {
    mainWindow.setIcon(fileURLToPath(new URL('../../public/favicon.ico', import.meta.url)));
    mainWindow.loadURL('http://localhost:3000');
    mainWindow.webContents.openDevTools();
  }
  else {
    mainWindow.loadFile(path.join(__dirname, '../renderer/index.html'));
  }

  return mainWindow;
};

const setupRedisPubSub = (mainWindow: BrowserWindow) => {
  if (!redisSubscriber) {
    console.error('Redis subscriber not initialized');
    return;
  }

  try {
    // Subscribe to the channels
    redisSubscriber.subscribe('new_token_created', 'token_cex_updated', 'max_depth_reached');

    redisSubscriber.on('message', (channel: string, message: string) => {
      try {
        const data = JSON.parse(message);

        // Send data to renderer process
        mainWindow.webContents.send('redis-data', {
          channel,
          data,
          timestamp: Date.now(),
        });

        console.log(`Received data from channel ${channel}:`, data);
      }
      catch (error) {
        console.error('Error parsing Redis message:', error);
      }
    });

    console.log('Redis pubsub setup complete');
  }
  catch (error) {
    console.error('Error setting up Redis pubsub:', error);
  }
};

// IPC handlers
ipcMain.handle('window-minimize', () => {
  const window = BrowserWindow.getFocusedWindow();
  if (window) window.minimize();
});

ipcMain.handle('window-maximize', () => {
  const window = BrowserWindow.getFocusedWindow();
  if (window) {
    if (window.isMaximized()) {
      window.unmaximize();
    }
    else {
      window.maximize();
    }
  }
});

ipcMain.handle('window-close', () => {
  const window = BrowserWindow.getFocusedWindow();
  if (window) window.close();
});

ipcMain.handle('window-is-maximized', () => {
  const window = BrowserWindow.getFocusedWindow();
  return window ? window.isMaximized() : false;
});

ipcMain.handle('open-external', (event, url: string) => {
  shell.openExternal(url);
});

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', () => {
  connectRedis();
  createWindow();
});

// Quit when all windows are closed, except on macOS. There, it's common
// for applications and their menu bar to stay active until the user quits
// explicitly with Cmd + Q.
app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

app.on('activate', () => {
  // On OS X it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow();
  }
});

// Clean up Redis connection on app quit
app.on('before-quit', () => {
  if (redisSubscriber) {
    redisSubscriber.disconnect();
  }
});

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and import them here.