'use strict';

const { app, BrowserWindow, Tray, Menu, ipcMain, Notification, nativeImage, shell } = require('electron');
const path = require('path');

// electron-store v10 uses ESM — load dynamically
let Store;
let store;

async function loadStore() {
  const mod = await import('electron-store');
  Store = mod.default;
  store = new Store({
    defaults: { serverUrl: '' },
  });
}

let mainWindow = null;
let tray = null;
let setupWindow = null;

// ── Helpers ──────────────────────────────────────────────────────────────────

function getIconPath() {
  if (process.platform === 'darwin') return path.join(__dirname, 'assets', 'icon.icns');
  if (process.platform === 'win32') return path.join(__dirname, 'assets', 'icon.ico');
  return path.join(__dirname, 'assets', 'icon.png');
}

function createTray() {
  const trayImg = nativeImage.createFromPath(
    path.join(__dirname, 'assets', 'tray.png')
  );
  tray = new Tray(trayImg.isEmpty() ? nativeImage.createEmpty() : trayImg);
  tray.setToolTip('CloudLink');

  const menu = Menu.buildFromTemplate([
    { label: 'Open CloudLink', click: () => { mainWindow?.show(); mainWindow?.focus(); } },
    { type: 'separator' },
    {
      label: 'Change server URL…',
      click: () => openSetup(true),
    },
    { type: 'separator' },
    { label: 'Quit', click: () => app.quit() },
  ]);

  tray.setContextMenu(menu);
  tray.on('click', () => { mainWindow?.show(); mainWindow?.focus(); });
}

function openSetup(fromTray = false) {
  if (setupWindow) { setupWindow.focus(); return; }

  setupWindow = new BrowserWindow({
    width: 520,
    height: 340,
    resizable: false,
    title: 'CloudLink — Setup',
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: true,
      nodeIntegration: false,
    },
  });

  const current = store.get('serverUrl');
  const html = `<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<style>
  * { box-sizing: border-box; margin: 0; padding: 0; }
  body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
         background: #0f172a; color: #e2e8f0; display: flex; flex-direction: column;
         align-items: center; justify-content: center; height: 100vh; gap: 24px; padding: 32px; }
  h1 { font-size: 1.25rem; font-weight: 700; }
  p { font-size: 0.875rem; color: #94a3b8; text-align: center; }
  input { width: 100%; padding: 10px 14px; border-radius: 8px; border: 1px solid #334155;
          background: #1e293b; color: #e2e8f0; font-size: 0.9rem; outline: none; }
  input:focus { border-color: #6366f1; }
  button { padding: 10px 24px; background: #6366f1; color: white; border: none;
           border-radius: 8px; font-size: 0.9rem; cursor: pointer; }
  button:hover { background: #4f46e5; }
  .row { display: flex; gap: 12px; }
</style>
</head>
<body>
  <h1>🔗 CloudLink</h1>
  <p>Enter the URL of your CloudLink server.<br>
     For local development use <code style="color:#818cf8">http://localhost:5173</code></p>
  <input id="url" type="url" placeholder="https://cloudlink.yourserver.com"
         value="${current}" />
  <div class="row">
    <button onclick="save()">Connect</button>
  </div>
  <script>
    function save() {
      const v = document.getElementById('url').value.trim().replace(/\\/$/, '');
      if (!v) return;
      window.cloudlink.setServerUrl(v);
    }
  </script>
</body>
</html>`;

  setupWindow.loadURL('data:text/html;charset=utf-8,' + encodeURIComponent(html));
  setupWindow.on('closed', () => { setupWindow = null; });
}

function createMainWindow(serverUrl) {
  mainWindow = new BrowserWindow({
    width: 1280,
    height: 820,
    minWidth: 900,
    minHeight: 600,
    title: 'CloudLink',
    icon: getIconPath(),
    titleBarStyle: process.platform === 'darwin' ? 'hiddenInset' : 'default',
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: true,
      nodeIntegration: false,
      // Allow the web app to use the Web Crypto API and WebSockets
      webSecurity: true,
    },
  });

  mainWindow.loadURL(serverUrl);

  // Open external links in the default browser
  mainWindow.webContents.setWindowOpenHandler(({ url }) => {
    shell.openExternal(url);
    return { action: 'deny' };
  });

  // Hide to tray instead of quitting on close (macOS/Windows convention)
  mainWindow.on('close', (e) => {
    if (process.platform !== 'darwin' && !app.isQuitting) {
      e.preventDefault();
      mainWindow.hide();
    }
  });

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

// ── IPC ───────────────────────────────────────────────────────────────────────

ipcMain.handle('get-server-url', () => store.get('serverUrl'));

ipcMain.handle('set-server-url', (_e, url) => {
  store.set('serverUrl', url);
  setupWindow?.close();
  if (mainWindow) {
    mainWindow.loadURL(url);
  } else {
    createMainWindow(url);
  }
});

ipcMain.handle('show-notification', (_e, { title, body }) => {
  if (Notification.isSupported()) {
    new Notification({ title, body }).show();
  }
});

// ── App lifecycle ─────────────────────────────────────────────────────────────

app.whenReady().then(async () => {
  await loadStore();
  createTray();

  const serverUrl = store.get('serverUrl');
  if (!serverUrl) {
    openSetup();
  } else {
    createMainWindow(serverUrl);
  }

  app.on('activate', () => {
    if (!mainWindow && store.get('serverUrl')) {
      createMainWindow(store.get('serverUrl'));
    } else {
      mainWindow?.show();
    }
  });
});

app.on('before-quit', () => { app.isQuitting = true; });

// Keep running when all windows are closed (show via tray)
app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    // don't quit — user can reopen from tray
  }
});