initial commit

app/api/chats/route.ts

@@ -0,0 +1,101 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { jwtVerify } from 'jose';
+import { prisma } from '@/lib/prisma';
+
+const JWT_SECRET = new TextEncoder().encode(
+  process.env.JWT_SECRET || 'your-secret-key-at-least-32-chars-long'
+);
+
+export async function GET(request: NextRequest) {
+  const token = request.cookies.get('token')?.value;
+
+  if (!token) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  }
+
+  try {
+    const { payload } = await jwtVerify(token, JWT_SECRET);
+    const userId = payload.userId as string;
+
+    const chats = await prisma.chat.findMany({
+      where: { userId },
+      orderBy: { updatedAt: 'desc' },
+      include: {
+        messages: {
+          orderBy: { createdAt: 'asc' },
+        },
+      },
+    });
+
+    return NextResponse.json(chats, { status: 200 });
+  } catch (error) {
+    console.error('Fetch chats error:', error);
+    return NextResponse.json({ error: 'Internal server error' }, { status: 500 });
+  }
+}
+
+export async function POST(request: NextRequest) {
+  const token = request.cookies.get('token')?.value;
+
+  if (!token) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  }
+
+  try {
+    const { payload } = await jwtVerify(token, JWT_SECRET);
+    const userId = payload.userId as string;
+    const { messages, chatId } = await request.json();
+
+    if (!messages || !Array.isArray(messages) || messages.length === 0) {
+      return NextResponse.json({ error: 'Messages are required' }, { status: 400 });
+    }
+
+    // Determine chat ID or create new
+    let currentChatId = chatId;
+
+    // Use the last message in the array, assuming it's the one to be saved
+    const messageToSave = messages[messages.length - 1];
+
+    if (!currentChatId) {
+      // Create new chat
+      const firstMessageContent = messageToSave.content;
+      const title =
+        firstMessageContent.length > 30
+          ? `${firstMessageContent.substring(0, 30)}...`
+          : firstMessageContent;
+
+      const newChat = await prisma.chat.create({
+        data: {
+          userId,
+          title,
+        },
+      });
+      currentChatId = newChat.id;
+    }
+
+    const { content, role } = messageToSave;
+
+    if (!content || !role) {
+      return NextResponse.json({ error: 'Invalid message format' }, { status: 400 });
+    }
+
+    const message = await prisma.message.create({
+      data: {
+        content,
+        role,
+        chatId: currentChatId,
+      },
+    });
+
+    // Update chat updated_at
+    await prisma.chat.update({
+      where: { id: currentChatId },
+      data: { updatedAt: new Date() },
+    });
+
+    return NextResponse.json({ message, chatId: currentChatId }, { status: 200 });
+  } catch (error) {
+    console.error('Save chat error:', error);
+    return NextResponse.json({ error: 'Internal server error' }, { status: 500 });
+  }
+}