const { app, BrowserWindow, ipcMain } = require('electron');
const path = require('path');
const os = require('os');
const spawn = require('child_process').spawn;
const { store: electronStore } = require('./store');
const { setupIpcHandlers } = require('./ipc/handlers');

// Initialize IPC handlers immediately
setupIpcHandlers();

function createWindow() {
  const mainWindow = new BrowserWindow({
    width: 1200,
    height: 800,
    frame: false,
    titleBarStyle: 'hidden',
    webPreferences: {
      nodeIntegration: false,
      contextIsolation: true,
      preload: path.join(__dirname, 'preload.js'),
      sandbox: false,
      webSecurity: true,
    },
  });

  // Enable logging
  mainWindow.webContents.on('did-fail-load', (event, errorCode, errorDescription) => {
    console.error('Failed to load:', errorCode, errorDescription);
  });

  mainWindow.webContents.on('console-message', (event, level, message) => {
    console.log('Renderer Console:', message);
  });

  // In development, use the Vite dev server
  if (process.env.VITE_DEV_SERVER_URL) {
    // Wait for dev server to be ready
    const pollDevServer = async () => {
      try {
        const response = await fetch(process.env.VITE_DEV_SERVER_URL);
        if (response.ok) {
          mainWindow.loadURL(process.env.VITE_DEV_SERVER_URL);
          mainWindow.webContents.openDevTools();
        } else {
          setTimeout(pollDevServer, 500);
        }
      } catch {
        setTimeout(pollDevServer, 500);
      }
    };
    pollDevServer();
  } else {
    // In production, load the built files
    const prodPath = path.join(__dirname, '../dist/index.html');
    console.log('Production mode detected');
    console.log('__dirname:', __dirname);
    console.log('Attempting to load:', prodPath);
    
    // Check if the file exists
    try {
      if (require('fs').existsSync(prodPath)) {
        console.log('Found production build at:', prodPath);
        mainWindow.loadFile(prodPath).catch(err => {
          console.error('Failed to load production file:', err);
          // Try alternative path
          const altPath = path.join(process.cwd(), 'dist/index.html');
          console.log('Trying alternative path:', altPath);
          if (require('fs').existsSync(altPath)) {
            mainWindow.loadFile(altPath).catch(err => {
              console.error('Failed to load alternative path:', err);
            });
          } else {
            console.error('Alternative path does not exist');
          }
        });
      } else {
        console.error('Production build not found at:', prodPath);
        // Try alternative path
        const altPath = path.join(process.cwd(), 'dist/index.html');
        console.log('Trying alternative path:', altPath);
        if (require('fs').existsSync(altPath)) {
          mainWindow.loadFile(altPath).catch(err => {
            console.error('Failed to load alternative path:', err);
          });
        } else {
          console.error('Alternative path does not exist');
        }
      }
    } catch (err) {
      console.error('Error checking file existence:', err);
    }
  }

  mainWindow.once('ready-to-show', () => {
    mainWindow.show();
  });

  // Handle window state
  const windowState = electronStore.get('windowState', {
    width: 1200,
    height: 800
  });
  mainWindow.setSize(windowState.width, windowState.height);

  mainWindow.on('close', () => {
    const { width, height } = mainWindow.getBounds();
    electronStore.set('windowState', { width, height });
  });

  // Set up security headers
  mainWindow.webContents.session.webRequest.onHeadersReceived((details, callback) => {
    callback({
      responseHeaders: {
        ...details.responseHeaders,
        'Content-Security-Policy': [
          "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data:;"
        ]
      }
    });
  });
}

app.whenReady().then(() => {
  createWindow();

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

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

// IPC handlers for file system operations
ipcMain.handle('get-app-path', () => {
  return app.getPath('userData');
});

// Window control handlers
ipcMain.handle('window-minimize', (event) => {
  const window = BrowserWindow.fromWebContents(event.sender);
  window?.minimize();
});

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

ipcMain.handle('window-close', (event) => {
  const window = BrowserWindow.fromWebContents(event.sender);
  window?.close();
});

ipcMain.handle('open-external', (_, url) => {
  return require('electron').shell.openExternal(url);
});

module.exports = app;