fix: Update Discord API integration to use Bot token and channel ID for message handling

src/app/api/upload-part/route.ts

@@ -1,10 +1,12 @@
 import { NextResponse } from 'next/server';
 import pool from '@/lib/db';
 
-if (!process.env.DISCORD_WEBHOOK_URL) {
-  throw new Error('Please define DISCORD_WEBHOOK_URL in .env.local');
+if (!process.env.DISCORD_BOT_TOKEN || !process.env.DISCORD_CHANNEL_ID) {
+  throw new Error('Please define DISCORD_BOT_TOKEN and DISCORD_CHANNEL_ID in .env.local');
 }
 
+const DISCORD_API_URL = `https://discord.com/api/v10/channels/${process.env.DISCORD_CHANNEL_ID}/messages`;
+
 export async function POST(request: Request) {
   try {
     const formData = await request.formData();
@@ -16,14 +18,15 @@ export async function POST(request: Request) {
       return NextResponse.json({ error: 'Missing required form fields' }, { status: 400 });
     }
 
-    // Forward the chunk to Discord
+    // Forward the chunk to Discord via the Bot API
     const discordFormData = new FormData();
     discordFormData.append('file', chunk, `chunk-${partIndex}.bin`);
-    // You can add content to the message if you want
-    // discordFormData.append('content', `File chunk for ${fileId}, part ${partIndex}`);
 
-    const discordRes = await fetch(process.env.DISCORD_WEBHOOK_URL, {
+    const discordRes = await fetch(DISCORD_API_URL, {
       method: 'POST',
+      headers: {
+        'Authorization': `Bot ${process.env.DISCORD_BOT_TOKEN}`,
+      },
       body: discordFormData,
     });
 
@@ -41,7 +44,7 @@ export async function POST(request: Request) {
     }
 
     const discordMessageId = discordData.id;
-    const discordAttachmentUrl = attachment.url;
+    const discordAttachmentUrl = attachment.url; // This URL is temporary
     const partSize = attachment.size;
 
     // Save part metadata to the database