feat: unified token management with Flow auto-refresh

auth/index.js

@@ -31,6 +31,7 @@ async function ensureAuthenticated(forceNew = false) {
 
 module.exports = {
   tokenManager,
+  tokenStorage,
   authTools,
   ensureAuthenticated
 };

auth/token-manager.js

@@ -1,5 +1,10 @@
 /**
- * Token management for Microsoft Graph API authentication
+ * @deprecated Use TokenStorage (auth/token-storage.js) instead.
+ * TokenStorage provides automatic refresh, unified scope management,
+ * and async file operations. This module is retained only for:
+ *   - Test mode token creation (createTestTokens)
+ *   - Backwards compatibility for legacy imports
+ * Do not add new functionality here. Migrate consumers to TokenStorage.
  */
 const fs = require('fs');
 const config = require('../config');
@@ -84,67 +89,17 @@ function getAccessToken() {
  * Gets the current Flow API access token
  * @returns {string|null} - The Flow access token or null if not available
  */
-function getFlowAccessToken() {
-  const tokens = loadTokenCache();
-  if (!tokens) return null;
-
-  // Check if flow token exists and is not expired
-  if (tokens.flow_access_token && tokens.flow_expires_at) {
-    if (Date.now() < tokens.flow_expires_at) {
-      return tokens.flow_access_token;
-    }
-  }
-
-  return null;
-}
-
-/**
- * Saves Flow API tokens alongside existing Graph tokens
- * @param {object} flowTokens - The Flow tokens to save
- * @returns {boolean} - Whether the save was successful
- */
-function saveFlowTokens(flowTokens) {
-  try {
-    const tokenPath = config.AUTH_CONFIG.tokenStorePath;
-
-    // Load existing tokens
-    let existingTokens = {};
-    if (fs.existsSync(tokenPath)) {
-      const tokenData = fs.readFileSync(tokenPath, 'utf8');
-      existingTokens = JSON.parse(tokenData);
-    }
-
-    // Merge flow tokens
-    const mergedTokens = {
-      ...existingTokens,
-      flow_access_token: flowTokens.access_token,
-      flow_refresh_token: flowTokens.refresh_token,
-      flow_expires_at: flowTokens.expires_at || (Date.now() + (flowTokens.expires_in || 3600) * 1000)
-    };
-
-    fs.writeFileSync(tokenPath, JSON.stringify(mergedTokens, null, 2), { mode: 0o600 });
-    console.log('Flow tokens saved successfully');
-
-    // Update cache
-    cachedTokens = mergedTokens;
-    return true;
-  } catch (error) {
-    console.error('Error saving Flow tokens:', error);
-    return false;
-  }
-}
-
 /**
  * Creates a test access token for use in test mode
  * @returns {object} - The test tokens
  */
 function createTestTokens() {
   const testTokens = {
-    access_token: "test_access_token_" + Date.now(),
-    refresh_token: "test_refresh_token_" + Date.now(),
-    expires_at: Date.now() + (3600 * 1000) // 1 hour
+    access_token: 'test_access_token_' + Date.now(),
+    refresh_token: 'test_refresh_token_' + Date.now(),
+    expires_at: Date.now() + 3600 * 1000, // 1 hour
   };
-  
+
   saveTokenCache(testTokens);
   return testTokens;
 }
@@ -153,7 +108,5 @@ module.exports = {
   loadTokenCache,
   saveTokenCache,
   getAccessToken,
-  getFlowAccessToken,
-  saveFlowTokens,
-  createTestTokens
+  createTestTokens,
 };