Fix timezone mismatch and OAuth profile field access

- Add getLatestDateWithData() helper that queries the most recent date
  with price data instead of using server UTC time
- Cache latest date for 5 minutes to reduce database queries
- Update all date-dependent endpoints to use database-relative dates
- Fix OAuth callback profile field access (use profile.email instead
  of profile.emails[0].value)
- Remove loginCount from $setOnInsert to avoid MongoDB conflict error

middleware/passport.js

@@ -11,9 +11,15 @@ const configurePassport = (passport, db) => {
   },
   async (accessToken, refreshToken, profile, done) => {
     try {
+      // Safely extract email
+      const email = profile.emails?.[0]?.value;
+      if (!email) {
+        return done(new Error('No email found in Google profile'), null);
+      }
+
       const userProfile = {
         googleId: profile.id,
-        email: profile.emails[0].value,
+        email: email,
         name: profile.displayName,
         picture: profile.photos?.[0]?.value || null
       };
@@ -21,6 +27,7 @@ const configurePassport = (passport, db) => {
       const user = await findOrCreateUser(db, userProfile);
       done(null, user);
     } catch (error) {
+      console.error('Passport strategy error:', error);
       done(error, null);
     }
   }));

models/user.js

@@ -18,21 +18,20 @@ async function findOrCreateUser(db, profile) {
   const now = new Date();
 
   const result = await db.collection(USER_COLLECTION).findOneAndUpdate(
-    { googleId: profile.id },
+    { googleId: profile.googleId },
     {
       $set: {
-        email: profile.emails[0].value,
+        email: profile.email,
-        name: profile.displayName,
+        name: profile.name,
-        picture: profile.photos?.[0]?.value || null,
+        picture: profile.picture || null,
         lastLoginAt: now
       },
       $inc: { loginCount: 1 },
       $setOnInsert: {
-        googleId: profile.id,
+        googleId: profile.googleId,
         isActive: true,
         role: 'user',
-        createdAt: now,
+        createdAt: now
-        loginCount: 0 // Will be incremented to 1 by $inc
       }
     },
     {

server.js

@@ -85,14 +85,50 @@ async function connectToMongoDB() {
   }
 }
 
-// Helper function to get today's date
+// Helper function to get today's date in UTC
-const getTodayDate = () => new Date().toISOString().split('T')[0];
+const getTodayDateUTC = () => new Date().toISOString().split('T')[0];
 
-// Helper function to get yesterday's date
+// Cache for the most recent date with data
-const getYesterdayDate = () => {
+let cachedLatestDate = null;
-  const yesterday = new Date();
+let cachedLatestDateTimestamp = 0;
-  yesterday.setDate(yesterday.getDate() - 1);
+const CACHE_TTL = 5 * 60 * 1000; // 5 minutes
-  return yesterday.toISOString().split('T')[0];
+
+// Helper function to get the most recent date with data in the database
+// This handles timezone mismatches between server and data collection
+const getLatestDateWithData = async () => {
+  const now = Date.now();
+
+  // Return cached value if still valid
+  if (cachedLatestDate && (now - cachedLatestDateTimestamp) < CACHE_TTL) {
+    return cachedLatestDate;
+  }
+
+  try {
+    const result = await db.collection(PRICES_COLLECTION)
+      .find({})
+      .sort({ date_checked: -1 })
+      .limit(1)
+      .project({ date_checked: 1 })
+      .toArray();
+
+    if (result.length > 0) {
+      cachedLatestDate = result[0].date_checked;
+      cachedLatestDateTimestamp = now;
+      return cachedLatestDate;
+    }
+  } catch (error) {
+    console.error('Error fetching latest date with data:', error);
+  }
+
+  // Fallback to UTC today if no data found
+  return getTodayDateUTC();
+};
+
+// Helper function to get yesterday relative to the latest date with data
+const getYesterdayDate = (today) => {
+  const todayDate = new Date(today + 'T00:00:00Z');
+  todayDate.setDate(todayDate.getDate() - 1);
+  return todayDate.toISOString().split('T')[0];
 };
 
 // Helper function to validate unit code (prevents NoSQL injection)
@@ -154,7 +190,7 @@ app.get('/last-scrape', requireAuth, async (req, res) => {
 // Get daily summary (matches your daily_summaries collection)
 app.get('/daily-summary', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
     
     // Try to get today's summary first
     let summary = await db.collection(DAILY_SUMMARIES_COLLECTION)
@@ -194,11 +230,13 @@ app.get('/daily-summary', requireAuth, async (req, res) => {
 app.get('/price-history', requireAuth, async (req, res) => {
   try {
     const days = parseInt(req.query.days) || 15;
-    
+    const latestDate = await getLatestDateWithData();
-    // Generate date range
+
+    // Generate date range ending at the latest date with data
     const dates = [];
+    const baseDate = new Date(latestDate + 'T00:00:00Z');
     for (let i = days - 1; i >= 0; i--) {
-      const date = new Date();
+      const date = new Date(baseDate);
       date.setDate(date.getDate() - i);
       dates.push(date.toISOString().split('T')[0]);
     }
@@ -248,7 +286,7 @@ app.get('/price-history', requireAuth, async (req, res) => {
 // Get available units with current prices
 app.get('/available-units', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
     
     // Get units that have prices today (excluding furnished units)
     const availableUnits = await db.collection(UNITS_COLLECTION).aggregate([
@@ -428,7 +466,7 @@ app.get('/unit/:unitCode/price-history', requireAuth, async (req, res) => {
 // Get comprehensive analytics data
 app.get('/analytics', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
 
     // 1. Monthly Price Trends - aggregate all prices by month
     const monthlyTrends = await db.collection(PRICES_COLLECTION).aggregate([
@@ -670,8 +708,8 @@ app.get('/analytics', requireAuth, async (req, res) => {
 // Get recent activity (new units, rented units, price changes)
 app.get('/recent-activity', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
-    const yesterday = getYesterdayDate();
+    const yesterday = getYesterdayDate(today);
     
     // Get today's summary for new/rented units
     const todaySummary = await db.collection(DAILY_SUMMARIES_COLLECTION)
@@ -799,7 +837,7 @@ app.get('/recent-activity', requireAuth, async (req, res) => {
 // Get plan statistics
 app.get('/plan-stats', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
     
     const planStats = await db.collection(UNITS_COLLECTION).aggregate([
       {
@@ -862,7 +900,7 @@ app.get('/plan-stats', requireAuth, async (req, res) => {
 // Get best deals (units priced below their historical average)
 app.get('/best-deals', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
     const limit = parseInt(req.query.limit) || 5;
 
     const bestDeals = await db.collection(UNITS_COLLECTION).aggregate([
@@ -987,14 +1025,15 @@ app.get('/best-deals', requireAuth, async (req, res) => {
 // Get price drops (units with recent price decreases)
 app.get('/price-drops', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
     const daysBack = parseInt(req.query.days) || 7;
     const limit = parseInt(req.query.limit) || 10;
 
-    // Generate date range for the last N days
+    // Generate date range for the last N days relative to latest data date
     const dates = [];
+    const baseDate = new Date(today + 'T00:00:00Z');
     for (let i = 0; i < daysBack; i++) {
-      const date = new Date();
+      const date = new Date(baseDate);
       date.setDate(date.getDate() - i);
       dates.push(date.toISOString().split('T')[0]);
     }
@@ -1084,7 +1123,7 @@ app.get('/price-drops', requireAuth, async (req, res) => {
 // Get stale inventory (units on market for a long time)
 app.get('/stale-inventory', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
     const minDays = parseInt(req.query.minDays) || 10;
     const limit = parseInt(req.query.limit) || 10;
 
@@ -1210,7 +1249,7 @@ app.get('/stale-inventory', requireAuth, async (req, res) => {
 // Get market insights and predictions
 app.get('/market-insights', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
 
     // Get various market metrics
     const [
@@ -1420,8 +1459,8 @@ app.get('/market-insights', requireAuth, async (req, res) => {
 // Enhanced available units with more details
 app.get('/available-units-enhanced', requireAuth, async (req, res) => {
   try {
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
-    const yesterday = getYesterdayDate();
+    const yesterday = getYesterdayDate(today);
 
     const availableUnits = await db.collection(UNITS_COLLECTION).aggregate([
       {
@@ -1613,7 +1652,7 @@ app.get('/unit/:unitCode', requireAuth, async (req, res) => {
       return res.status(400).json({ error: 'Invalid unit code format' });
     }
 
-    const today = getTodayDate();
+    const today = await getLatestDateWithData();
 
     const unit = await db.collection(UNITS_COLLECTION).aggregate([
       { $match: { unit_code: unitCode } },