github: additional pre-upload checks for doxygen workflow (#3526)

Co-authored-by: あく <alleteam@gmail.com>

.github/workflows/docs.yml

@@ -11,9 +11,26 @@ env:
   DEFAULT_TARGET: f7
 
 jobs:
-  doxygen:
+  check-secret:
-    if: ${{ !github.event.pull_request.head.repo.fork }}
+    if: ${{ github.event.pull_request.head.repo.fork == false }}
     runs-on: ubuntu-latest
+    outputs:
+      s3-valid-config: ${{ steps.check.outputs.s3-valid-config }}
+
+    steps:
+      - name: 'Check if S3 key exists'
+        id: check
+        run: |
+          if [[ -z "${{ secrets.FW_DOCS_AWS_ACCESS_KEY }}" || -z "${{ secrets.FW_DOCS_AWS_SECRET_KEY }}" || -z "${{ secrets.FW_DOCS_AWS_BUCKET }}" ]]; then
+            echo "s3-valid-config=false" >> $GITHUB_OUTPUT;
+          else
+            echo "s3-valid-config=true" >> $GITHUB_OUTPUT;
+          fi
+
+  doxygen:
+    if: ${{ github.event.pull_request.head.repo.fork == false }}
+    runs-on: ubuntu-latest
+    needs: check-secret
     steps:
       - name: 'Wipe workspace'
         run: find ./ -mount -maxdepth 1 -exec rm -rf {} \;
@@ -48,7 +65,7 @@ jobs:
           doxyfile-path: './doxygen/Doxyfile-awesome.cfg'
 
       - name: 'Upload documentation'
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/dev' }}
+        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/dev' && needs.check-secret.outputs.s3-valid-config == 'true' }}
         uses: jakejarvis/s3-sync-action@v0.5.1
         env:
           AWS_S3_BUCKET: "${{ secrets.FW_DOCS_AWS_BUCKET }}"
@@ -59,4 +76,3 @@ jobs:
           DEST_DIR: "${{steps.names.outputs.branch_name}}"
         with:
           args: "--delete"
-