Use gradio-pr-bot to make notebook check comments on PRs (#2925)

* Add new workflow files

* Fix spacing

* Indent

* Single quotes

* indent

* Single quotes

* Reorder steps

* Only comment once

* Comment if true

* Use v2

.github/workflows/check-demo-notebooks.yml

@@ -3,7 +3,7 @@
 name: Check Demos Match Notebooks
 
 on:
-  pull_request_target:
+  pull_request:
     types: [opened, synchronize, reopened]
     paths:
         - 'demo/**'
@@ -26,13 +26,18 @@ jobs:
       - name: Assert Notebooks Match 
         id: assertNotebooksMatch
         run: git status | grep "nothing to commit, working tree clean"
-      - name: Comment On PR
-        uses: thollander/actions-comment-pull-request@v1
-        if: always() && (steps.assertNotebooksMatch.outcome == 'failure')
+      - name: Get PR Number
+        if: always()
+        run: |
+          python -c "import os;print(os.environ['GITHUB_REF'].split('/')[2])" > pr_number.txt
+          echo "PR_NUMBER=$(cat pr_number.txt)" >> $GITHUB_ENV
+      - name: Upload PR Number
+        if: always()
+        run: |
+          python -c "import json; json.dump({'pr_number': ${{ env.PR_NUMBER }}},  open('metadata.json', 'w'))"
+      - name: Upload metadata
+        if: always()
+        uses: actions/upload-artifact@v3
         with:
-          message: |
-            The demo notebooks don't match the run.py files. Please run this command from the root of the repo and then commit the changes:
-            ```bash
-            pip install nbformat && cd demo && python generate_notebooks.py
-            ```
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          name: metadata.json
+          path: metadata.json

.github/workflows/comment-pr.yml

@@ -0,0 +1,44 @@
+on:
+  workflow_run:
+    workflows: [Check Demos Match Notebooks]
+    types: [completed]
+
+jobs:
+  comment-on-failure:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: '3.9'
+      - name: Install pip
+        run: python -m pip install requests
+      - name: Download metadata
+        run: python scripts/download_artifacts.py ${{github.event.workflow_run.id }} metadata.json ${{ secrets.COMMENT_TOKEN }} --owner ${{ github.repository_owner }}
+      - run: unzip metadata.json.zip
+      - name: Pipe metadata to env
+        run: echo "pr_number=$(python -c 'import json; print(json.load(open("metadata.json"))["pr_number"])')" >> $GITHUB_ENV
+      - name: Comment On Notebook check fail
+        if: ${{ github.event.workflow_run.conclusion == 'failure' && github.event.workflow_run.name == 'Check Demos Match Notebooks'}}
+        uses: thollander/actions-comment-pull-request@v2
+        with:
+          message: |
+              The demo notebooks don't match the run.py files. Please run this command from the root of the repo and then commit the changes:
+              ```bash
+              pip install nbformat && cd demo && python generate_notebooks.py
+              ```
+          comment_includes: The demo notebooks don't match the run.py files
+          GITHUB_TOKEN: ${{ secrets.COMMENT_TOKEN }}
+          pr_number: ${{ env.pr_number }}
+          comment_tag: notebook-check
+      - name: Comment On Notebook check fail
+        if: ${{ github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.name == 'Check Demos Match Notebooks'}}
+        uses: thollander/actions-comment-pull-request@v2
+        with:
+          message: |
+              🎉 The demo notebooks match the run.py files! 🎉
+          comment_includes: The demo notebooks match the run.py files!
+          GITHUB_TOKEN: ${{ secrets.COMMENT_TOKEN }}
+          pr_number: ${{ env.pr_number }}
+          comment_tag: notebook-check