[diff_headers.yml] Notify to internal chat group

.github/workflows/diff_headers.yml

@@ -15,10 +15,26 @@ on:
 jobs:
   diff-headers:
     runs-on: ubuntu-latest
+    env:
+      DIFF_BOT_NOTIFICATION_URL: ${{ secrets.DIFF_BOT_NOTIFICATION_URL }}
     steps:
       - uses: actions/checkout@v3
 
       - name: Diff headers
         run: |
           bash scripts/diff.sh ${{ inputs.base-version }} ${{ inputs.target-version }}
         shell: bash
+      - name: Notification
+        run: |
+          URL=https://github.com/AgoraIO-Extensions/terra_shared_configs/actions/runs/${{ github.run_id }}
+          MESSAGE="## Diff headers between ${{ inputs.base-version }} and ${{ inputs.target-version }}:\n${URL}"
+
+          curl ${DIFF_BOT_NOTIFICATION_URL} \
+            -H 'Content-Type: application/json' \
+            -d "
+            {
+                  \"msgtype\": \"text\",
+                  \"text\": {
+                      \"content\": \"${MESSAGE}\"
+                  }
+            }"