refactor: split main file into smaller modules for better maintainability

backend/utils/fileManager.js

@@ -0,0 +1,103 @@
+const fs = require('fs');
+const path = require('path');
+const axios = require('axios');
+
+async function downloadFile(url, dest, progressCallback) {
+  const response = await axios({
+    method: 'GET',
+    url: url,
+    responseType: 'stream',
+    headers: {
+      'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
+      'Accept': '*/*',
+      'Accept-Language': 'en-US,en;q=0.9',
+      'Referer': 'https://launcher.hytale.com/'
+    }
+  });
+
+  const totalSize = parseInt(response.headers['content-length'], 10);
+  let downloaded = 0;
+  const startTime = Date.now();
+
+  const writer = fs.createWriteStream(dest);
+
+  response.data.on('data', (chunk) => {
+    downloaded += chunk.length;
+    if (progressCallback && totalSize > 0) {
+      const percent = Math.min(100, Math.max(0, (downloaded / totalSize) * 100));
+      const elapsed = (Date.now() - startTime) / 1000;
+      const speed = elapsed > 0 ? downloaded / elapsed : 0;
+      progressCallback(null, percent, speed, downloaded, totalSize);
+    }
+  });
+
+  response.data.pipe(writer);
+
+  return new Promise((resolve, reject) => {
+    writer.on('finish', resolve);
+    writer.on('error', reject);
+    response.data.on('error', reject);
+  });
+}
+
+function findHomePageUIPath(gameLatest) {
+  function searchDirectory(dir) {
+    try {
+      const items = fs.readdirSync(dir, { withFileTypes: true });
+      
+      for (const item of items) {
+        if (item.isFile() && item.name === 'HomePage.ui') {
+          return path.join(dir, item.name);
+        } else if (item.isDirectory()) {
+          const found = searchDirectory(path.join(dir, item.name));
+          if (found) {
+            return found;
+          }
+        }
+      }
+    } catch (error) {
+    }
+    
+    return null;
+  }
+  
+  if (!fs.existsSync(gameLatest)) {
+    return null;
+  }
+  
+  return searchDirectory(gameLatest);
+}
+
+function findLogoPath(gameLatest) {
+  function searchDirectory(dir) {
+    try {
+      const items = fs.readdirSync(dir, { withFileTypes: true });
+      
+      for (const item of items) {
+        if (item.isFile() && item.name === 'Logo@2x.png') {
+          return path.join(dir, item.name);
+        } else if (item.isDirectory()) {
+          const found = searchDirectory(path.join(dir, item.name));
+          if (found) {
+            return found;
+          }
+        }
+      }
+    } catch (error) {
+    }
+    
+    return null;
+  }
+  
+  if (!fs.existsSync(gameLatest)) {
+    return null;
+  }
+  
+  return searchDirectory(gameLatest);
+}
+
+module.exports = {
+  downloadFile,
+  findHomePageUIPath,
+  findLogoPath
+};

backend/utils/platformUtils.js

@@ -0,0 +1,73 @@
+const { execSync } = require('child_process');
+
+function getOS() {
+  if (process.platform === 'win32') return 'windows';
+  if (process.platform === 'darwin') return 'darwin';
+  if (process.platform === 'linux') return 'linux';
+  return 'unknown';
+}
+
+function getArch() {
+  return process.arch === 'x64' ? 'amd64' : process.arch;
+}
+
+function isWaylandSession() {
+  if (process.platform !== 'linux') {
+    return false;
+  }
+  
+  const sessionType = process.env.XDG_SESSION_TYPE;
+  if (sessionType && sessionType.toLowerCase() === 'wayland') {
+    return true;
+  }
+  
+  if (process.env.WAYLAND_DISPLAY) {
+    return true;
+  }
+  
+  try {
+    const sessionId = process.env.XDG_SESSION_ID;
+    if (sessionId) {
+      const output = execSync(`loginctl show-session ${sessionId} -p Type`, { encoding: 'utf8' });
+      if (output && output.toLowerCase().includes('wayland')) {
+        return true;
+      }
+    }
+  } catch (err) {
+  }
+  
+  return false;
+}
+
+function setupWaylandEnvironment() {
+  if (process.platform !== 'linux') {
+    return {};
+  }
+  
+  if (!isWaylandSession()) {
+    console.log('Detected X11 session, using default environment');
+    return {};
+  }
+  
+  console.log('Detected Wayland session, configuring environment...');
+  
+  const envVars = {
+    SDL_VIDEODRIVER: 'wayland',
+    GDK_BACKEND: 'wayland',
+    QT_QPA_PLATFORM: 'wayland',
+    MOZ_ENABLE_WAYLAND: '1',
+    _JAVA_AWT_WM_NONREPARENTING: '1'
+  };
+  
+  envVars.ELECTRON_OZONE_PLATFORM_HINT = 'wayland';
+  
+  console.log('Wayland environment variables:', envVars);
+  return envVars;
+}
+
+module.exports = {
+  getOS,
+  getArch,
+  isWaylandSession,
+  setupWaylandEnvironment
+};