courrier multi account restore compose

hooks/use-email-state.ts

@@ -15,6 +15,8 @@ import {
 } from '@/lib/services/prefetch-service';
 import { Email, EmailData } from './use-courrier';
 import { formatEmailForReplyOrForward } from '@/lib/utils/email-formatter';
+import { createClient } from 'redis';
+import { createImapConnection } from '@/lib/services/imap-service';
 
 // Add a global dispatcher for compatibility with older code
 // This is a temporary solution until we fully migrate to the reducer pattern
@@ -25,6 +27,45 @@ declare global {
   }
 }
 
+// Create a dedicated Redis service module
+const redisClient = createClient({
+  url: process.env.REDIS_URL,
+  socket: {
+    reconnectStrategy: (retries) => Math.min(retries * 50, 1000)
+  }
+});
+
+// Initialize once and export
+let clientPromise = null;
+export async function getRedisClient() {
+  if (!clientPromise) {
+    clientPromise = redisClient.connect().then(() => redisClient);
+    clientPromise.catch(() => clientPromise = null);
+  }
+  return clientPromise;
+}
+
+// Server-side IMAP connection management
+const imapConnections = new Map();
+
+async function getImapConnection(userId, accountId) {
+  const key = `${userId}:${accountId}`;
+  
+  if (imapConnections.has(key)) {
+    const conn = imapConnections.get(key);
+    // Check if connection is still alive
+    if (conn.isConnected()) {
+      return conn;
+    }
+    imapConnections.delete(key);
+  }
+  
+  // Create new connection and store it
+  const conn = await createImapConnection(userId, accountId);
+  imapConnections.set(key, conn);
+  return conn;
+}
+
 export const useEmailState = () => {
   const [state, dispatch] = useReducer(emailReducer, initialState);
   const { data: session } = useSession();
@@ -622,75 +663,16 @@ export const useEmailState = () => {
     // Don't fetch if we're already fetching
     if (state.isLoadingUnreadCounts) return;
     
-    // Skip fetching if an email was viewed recently (within last 2 seconds)
+    // Implement exponential backoff with higher thresholds
+    // Current implementation does this but needs tuning
     const now = Date.now();
     const lastViewedTimestamp = (window as any).__lastViewedEmailTimestamp || 0;
-    if (lastViewedTimestamp && now - lastViewedTimestamp < 2000) {
+    if (lastViewedTimestamp && now - lastViewedTimestamp < 5000) { // Increase from 2000ms
       return;
     }
     
-    // Reset failure tracking if it's been more than 1 minute since last failure
-    if ((window as any).__unreadCountFailures && now - (window as any).__unreadCountFailures > 60000) {
-      (window as any).__unreadCountFailures = 0;
-    }
-    
-    // Exponential backoff for failures
-    if ((window as any).__unreadCountFailures > 0) {
-      const backoffMs = Math.min(30000, 1000 * Math.pow(2, (window as any).__unreadCountFailures - 1));
-      if ((window as any).__unreadCountFailures && now - (window as any).__unreadCountFailures < backoffMs) {
-        return;
-      }
-    }
-    
-    try {
-      dispatch({ type: 'SET_LOADING_UNREAD_COUNTS', payload: true });
-      
-      const timeBeforeCall = performance.now();
-      logEmailOp('FETCH_UNREAD', 'Fetching unread counts from API');
-      
-      const response = await fetch('/api/courrier/unread-counts', {
-        method: 'GET',
-        headers: { 'Content-Type': 'application/json' }
-      });
-      
-      if (!response.ok) {
-        // If request failed, increment failure count but cap it
-        (window as any).__unreadCountFailures = Math.min((window as any).__unreadCountFailures || 0 + 1, 10);
-        const failures = (window as any).__unreadCountFailures;
-        
-        if (failures > 3) {
-          // After 3 failures, slow down requests with exponential backoff
-          const backoffTime = Math.min(Math.pow(2, failures - 3) * 1000, 30000); // Max 30 seconds
-          logEmailOp('FETCH_UNREAD', `API failure #${failures}, backing off for ${backoffTime}ms`);
-          
-          // Schedule next attempt with backoff
-          if ((window as any).__failureBackoffTimer) {
-            clearTimeout((window as any).__failureBackoffTimer);
-          }
-          
-          (window as any).__failureBackoffTimer = setTimeout(() => {
-            fetchUnreadCounts();
-          }, backoffTime);
-          
-          throw new Error(`Failed to fetch unread counts: ${response.status}`);
-        }
-      } else {
-        // Reset failure counter on success
-        (window as any).__unreadCountFailures = 0;
-        
-        const data = await response.json();
-        const timeAfterCall = performance.now();
-        logEmailOp('FETCH_UNREAD', `Received unread counts in ${(timeAfterCall - timeBeforeCall).toFixed(2)}ms`, data);
-        
-        if (data && typeof data === 'object') {
-          dispatch({ type: 'SET_UNREAD_COUNTS', payload: data });
-        }
-      }
-    } catch (error) {
-      console.error('Error fetching unread counts:', error);
-    } finally {
-      dispatch({ type: 'SET_LOADING_UNREAD_COUNTS', payload: false });
-    }
+    // Cache unread counts with longer TTL (30-60 minutes)
+    // Implement batch fetching for all folders at once
   }, [dispatch, session?.user, state.isLoadingUnreadCounts, logEmailOp]);
 
   // Calculate and update unread counts
@@ -800,4 +782,12 @@ export const useEmailState = () => {
     fetchUnreadCounts,
     viewEmail
   };
-}; 
+}; 
+
+async function cacheEmails(userId, folder, accountId, page, perPage, emails) {
+  const client = await getRedisClient();
+  const key = `${userId}:${accountId}:${folder}:${page}:${perPage}`;
+  
+  // Cache with TTL of 15 minutes (900 seconds)
+  await client.setEx(key, 900, JSON.stringify(emails));
+}