import { app, BrowserWindow, ipcMain, dialog } from 'electron';
import path from 'path';
import { fileURLToPath } from 'url';
import http from 'http';
import fs from 'fs';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

let mainWindow = null;
let docsPath = '';
let port = 3001;

const DEFAULT_PORT = 3001;

function parseArgs() {
  const args = { port: DEFAULT_PORT, docs: null, headless: false };
  const portIndex = process.argv.indexOf('--port');
  if (portIndex !== -1 && process.argv[portIndex + 1]) {
    args.port = parseInt(process.argv[portIndex + 1], 10);
  }
  
  const docsIndex = process.argv.indexOf('--docs');
  if (docsIndex !== -1 && process.argv[docsIndex + 1]) {
    args.docs = process.argv[docsIndex + 1];
  }
  
  if (process.argv.includes('--headless')) {
    args.headless = true;
  }
  
  return args;
}

const args = parseArgs();
port = args.port;
docsPath = args.docs || path.join(process.cwd(), 'src', 'docs');

function getDistPath() {
  if (app.isPackaged) {
    return path.join(__dirname, '..', 'dist');
  }
  return path.join(__dirname, '..', 'dist');
}

function loadDistServer() {
  const distPath = getDistPath();
  
  const server = http.createServer((req, res) => {
    let filePath = path.join(distPath, req.url === '/' ? 'index.html' : req.url);
    
    if (!filePath.startsWith(distPath)) {
      res.writeHead(403);
      res.end('Forbidden');
      return;
    }
    
    const ext = path.extname(filePath);
    const contentTypes = {
      '.html': 'text/html',
      '.js': 'application/javascript',
      '.css': 'text/css',
      '.json': 'application/json',
      '.png': 'image/png',
      '.jpg': 'image/jpeg',
      '.svg': 'image/svg+xml',
      '.md': 'text/markdown',
    };
    
    if (fs.existsSync(filePath)) {
      const contentType = contentTypes[ext] || 'application/octet-stream';
      res.writeHead(200, { 'Content-Type': contentType });
      res.end(fs.readFileSync(filePath));
    } else {
      res.writeHead(404);
      res.end('Not Found');
    }
  });
  
  server.listen(port, () => {
    console.log(`XCSDD Server running on http://localhost:${port}`);
    console.log(`Docs path: ${docsPath}`);
    if (args.headless) {
      console.log(`Headless mode: enabled`);
    }
  });
  
  return server;
}

function createWindow() {
  if (args.headless) {
    loadDistServer();
    return;
  }
  
  loadDistServer();
  
  mainWindow = new BrowserWindow({
    width: 1200,
    height: 800,
    webPreferences: {
      preload: path.join(__dirname, 'preload.mjs'),
      contextIsolation: true,
      nodeIntegration: false,
    },
  });
  
  mainWindow.loadURL(`http://localhost:${port}`);
  
  mainWindow.on('closed', () => {
    mainWindow = null;
  });
}

ipcMain.handle('select-folder', async () => {
  if (!mainWindow) return null;
  
  const result = await dialog.showOpenDialog(mainWindow, {
    properties: ['openDirectory'],
  });
  
  if (result.canceled || result.filePaths.length === 0) {
    return null;
  }
  
  docsPath = result.filePaths[0];
  mainWindow.webContents.send('docs-path-changed', docsPath);
  return docsPath;
});

ipcMain.handle('get-docs-path', () => {
  return docsPath;
});

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

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