x

apps/backend/src/routes/line.ts

@@ -0,0 +1,49 @@
+import { Elysia } from 'elysia';
+import * as line from '@line/bot-sdk';
+import { lineConfig, lineClient } from '../lib/lineClient';
+import crypto from 'crypto';
+
+export const lineRoutes = new Elysia({ prefix: '/line' })
+  .post('/webhook', async ({ request, body, set }) => {
+    // 1. Verify Signature
+    const signature = request.headers.get('x-line-signature');
+    if (!signature) {
+      set.status = 400;
+      return { error: 'Missing Signature' };
+    }
+    
+    // get raw body string
+    const rawBody = await request.clone().text();
+
+    const hash = crypto
+      .createHmac('SHA256', lineConfig.channelSecret)
+      .update(rawBody)
+      .digest('base64');
+
+    if (hash !== signature) {
+      set.status = 401;
+      return { error: 'Invalid Signature' };
+    }
+
+    try {
+      const events: line.WebhookEvent[] = (body as any).events || [];
+      
+      for (const event of events) {
+        if (event.type === 'message' && event.message.type === 'text') {
+          // Simple echo bot for now
+          await lineClient.replyMessage({
+            replyToken: event.replyToken,
+            messages: [{
+              type: 'text',
+              text: `คุณส่งข้อความว่า: ${event.message.text}`
+            }]
+          });
+        }
+      }
+      return { success: true };
+    } catch (err) {
+      console.error('[LINE Webhook] Error:', err);
+      set.status = 500;
+      return { error: 'Webhook processing failed' };
+    }
+  });