From b24e266187320bda15e4b645fbcd789fc5d2126b Mon Sep 17 00:00:00 2001
From: alma <alma@governance-labs.org>
Date: Fri, 25 Apr 2025 16:28:28 +0200
Subject: [PATCH] panel 2 courier api

---
 app/api/courrier/[id]/route.ts | 147 +++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 app/api/courrier/[id]/route.ts

diff --git a/app/api/courrier/[id]/route.ts b/app/api/courrier/[id]/route.ts
new file mode 100644
index 00000000..bd846eb8
--- /dev/null
+++ b/app/api/courrier/[id]/route.ts
@@ -0,0 +1,147 @@
+import { NextResponse } from 'next/server';
+import { ImapFlow } from 'imapflow';
+import { getServerSession } from 'next-auth';
+import { authOptions } from '@/app/api/auth/[...nextauth]/route';
+import { prisma } from '@/lib/prisma';
+import { parseEmail } from '@/lib/server/email-parser';
+import { LRUCache } from 'lru-cache';
+
+// Simple in-memory cache for email content
+const emailContentCache = new LRUCache<string, any>({
+  max: 100, 
+  ttl: 1000 * 60 * 15, // 15 minutes
+});
+
+export async function GET(
+  request: Request,
+  { params }: { params: { id: string } }
+) {
+  try {
+    // 1. Get email ID from params
+    const { id } = params;
+    
+    // 2. Authentication check
+    const session = await getServerSession(authOptions);
+    if (!session?.user?.id) {
+      return NextResponse.json(
+        { error: 'Unauthorized' },
+        { status: 401 }
+      );
+    }
+
+    // 3. Check cache first
+    const cacheKey = `email:${session.user.id}:${id}`;
+    const cachedEmail = emailContentCache.get(cacheKey);
+    if (cachedEmail) {
+      return NextResponse.json(cachedEmail);
+    }
+
+    // 4. Get credentials from database
+    const credentials = await prisma.mailCredentials.findUnique({
+      where: {
+        userId: session.user.id
+      }
+    });
+
+    if (!credentials) {
+      return NextResponse.json(
+        { error: 'No mail credentials found. Please configure your email account.' },
+        { status: 401 }
+      );
+    }
+
+    // 5. Get the current folder from the request URL
+    const url = new URL(request.url);
+    const folder = url.searchParams.get('folder') || 'INBOX';
+
+    // 6. Create IMAP client
+    const client = new ImapFlow({
+      host: credentials.host,
+      port: credentials.port,
+      secure: true,
+      auth: {
+        user: credentials.email,
+        pass: credentials.password,
+      },
+      logger: false,
+      emitLogs: false,
+      tls: {
+        rejectUnauthorized: false
+      },
+      disableAutoIdle: true
+    });
+    
+    try {
+      await client.connect();
+      
+      // 7. Open the folder
+      await client.mailboxOpen(folder);
+      
+      // 8. Fetch the email with UID
+      const options = {
+        uid: true,  // This is crucial - we must specify uid:true to fetch by UID
+        source: true,
+        envelope: true,
+        bodyStructure: true,
+        flags: true
+      };
+      
+      // Fetch by UID
+      const message = await client.fetchOne(id, options);
+      
+      if (!message) {
+        return NextResponse.json(
+          { error: 'Email not found' },
+          { status: 404 }
+        );
+      }
+
+      // 9. Parse the email content
+      const parsedEmail = await parseEmail(message.source.toString());
+      
+      // 10. Prepare the full email object with all needed data
+      const fullEmail = {
+        id: message.uid.toString(),
+        from: message.envelope.from?.[0]?.address || '',
+        fromName: message.envelope.from?.[0]?.name || 
+                 message.envelope.from?.[0]?.address?.split('@')[0] || '',
+        to: message.envelope.to?.map((addr: any) => addr.address).join(', ') || '',
+        subject: message.envelope.subject || '(No subject)',
+        date: message.envelope.date?.toISOString() || new Date().toISOString(),
+        content: parsedEmail.html || parsedEmail.text || '',
+        textContent: parsedEmail.text || '',
+        read: message.flags.has('\\Seen'),
+        starred: message.flags.has('\\Flagged'),
+        folder: folder,
+        hasAttachments: message.bodyStructure?.type === 'multipart',
+        attachments: parsedEmail.attachments || [],
+        flags: Array.from(message.flags),
+        headers: parsedEmail.headers || {}
+      };
+
+      // 11. Mark as read if not already
+      if (!message.flags.has('\\Seen')) {
+        await client.messageFlagsAdd(id, ['\\Seen'], { uid: true });
+      }
+
+      // 12. Cache the email content
+      emailContentCache.set(cacheKey, fullEmail);
+
+      // 13. Return the full email
+      return NextResponse.json(fullEmail);
+    } finally {
+      // 14. Close the connection
+      try {
+        await client.logout();
+      } catch (e) {
+        console.error('Error during IMAP logout:', e);
+      }
+    }
+  } catch (error) {
+    console.error('Error fetching email:', error);
+    return NextResponse.json(
+      { error: 'Failed to fetch email' },
+      { status: 500 }
+    );
+  }
+} 
\ No newline at end of file