refactor: split main file into smaller modules for better maintainability

backend/services/versionManager.js

@@ -0,0 +1,82 @@
+const axios = require('axios');
+
+async function getLatestClientVersion() {
+  try {
+    console.log('Fetching latest client version from API...');
+    const response = await axios.get('http://3.10.208.30:3002/api/version_client', {
+      timeout: 5000,
+      headers: {
+        'User-Agent': 'Hytale-F2P-Launcher'
+      }
+    });
+
+    if (response.data && response.data.client_version) {
+      const version = response.data.client_version;
+      console.log(`Latest client version: ${version}`);
+      return version;
+    } else {
+      console.log('Warning: Invalid API response, falling back to default version');
+      return '4.pwr';
+    }
+  } catch (error) {
+    console.error('Error fetching client version:', error.message);
+    console.log('Warning: API unavailable, falling back to default version');
+    return '4.pwr';
+  }
+}
+
+async function getInstalledClientVersion() {
+  try {
+    console.log('Fetching installed client version from API...');
+    const response = await axios.get('http://3.10.208.30:3002/api/clientCheck', {
+      timeout: 5000,
+      headers: {
+        'User-Agent': 'Hytale-F2P-Launcher'
+      }
+    });
+
+    if (response.data && response.data.client_version) {
+      const version = response.data.client_version;
+      console.log(`Installed client version: ${version}`);
+      return version;
+    } else {
+      console.log('Warning: Invalid clientCheck API response');
+      return null;
+    }
+  } catch (error) {
+    console.error('Error fetching installed client version:', error.message);
+    console.log('Warning: clientCheck API unavailable');
+    return null;
+  }
+}
+
+async function getMultiClientVersion() {
+  try {
+    console.log('Fetching Multiplayer version from API...');
+    const response = await axios.get('http://3.10.208.30:3002/api/multi', {
+      timeout: 5000,
+      headers: {
+        'User-Agent': 'Hytale-F2P-Launcher'
+      }
+    });
+
+    if (response.data && response.data.multi_version) {
+      const version = response.data.multi_version;
+      console.log(`Multiplayer version: ${version}`);
+      return version;
+    } else {
+      console.log('Warning: Invalid multi API response');
+      return null;
+    }
+  } catch (error) {
+    console.error('Error fetching Multiplayer version:', error.message);
+    console.log('Multiplayer not available');
+    return null;
+  }
+}
+
+module.exports = {
+  getLatestClientVersion,
+  getInstalledClientVersion,
+  getMultiClientVersion
+};