import { app, BrowserWindow } from 'electron';
import path from 'node:path';
import started from 'electron-squirrel-startup';
import { initDb } from './db';
import { appRouter } from './router';
import { createIPCHandler } from './ipc';
import { initAI } from './ai/provider';
import { initVectorDb, migrateNotesIfNeeded } from './db/vectordb';
// Import to trigger provider registration before initAI() runs
import './ai/copilot';

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

const createWindow = (): BrowserWindow => {
  // Create the browser window.
  const mainWindow = new BrowserWindow({
    width: 1280,
    height: 800,
    minWidth: 900,
    minHeight: 600,
    titleBarStyle: 'hiddenInset',
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: true,
      nodeIntegration: false,
    },
  });

  // and load the index.html of the app.
  if (MAIN_WINDOW_VITE_DEV_SERVER_URL) {
    mainWindow.loadURL(MAIN_WINDOW_VITE_DEV_SERVER_URL);
  } else {
    mainWindow.loadFile(
      path.join(__dirname, `../renderer/${MAIN_WINDOW_VITE_NAME}/index.html`),
    );
  }

  // Open DevTools in development.
  if (process.env.NODE_ENV === 'development') {
    mainWindow.webContents.openDevTools();
  }

  return mainWindow;
};

// 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', () => {
  initDb();
  const win = createWindow();
  createIPCHandler({ router: appRouter, windows: [win] });
  // AI init is best-effort — never block window creation
  initAI().catch((err) => console.error('[AI] Init failed:', err));
  // Vector DB init + migration is best-effort — runs after window is shown
  initVectorDb()
    .then(() => migrateNotesIfNeeded())
    .catch((err) => console.error('[VectorDB] Init or migration failed:', err));
});

// 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();
  }
});

// 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.