implement schedule fault notification

.github/workflows/ci_tests.yml

@@ -69,3 +69,32 @@ jobs:
         run: |
           docker run ${{ matrix.cfg.id }} ctest --test-dir build -C Release
           docker run ${{ matrix.cfg.id }} ctest --test-dir build -C Debug
+
+  create-issue-when-fault:
+    runs-on: ubuntu-latest
+    needs: [test]
+    if: failure() && github.event_name == 'schedule'
+    steps:
+      - uses: actions/checkout@v4
+      # See https://github.com/cli/cli/issues/5075 
+      - name: Create issue
+        run: |
+          issue_num=$(gh issue list -s open -S "[SCHEDULED-BUILD] Build & Test failure" -L 1 --json number | jq 'if length == 0 then -1 else .[0].number end')
+          
+          body="**Build-and-Test Failure Report**
+          - **Time of Failure**: $(date -u '+%B %d, %Y, %H:%M %Z')
+          - **Commit**: [${{ github.sha }}](${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }})
+          - **Action Run**: [View logs](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})
+          
+          The scheduled build-and-test triggered by cron has failed.
+          Please investigate the logs and recent changes associated with this commit."
+          
+          echo $body
+          
+          if [[ $issue_num -eq -1 ]]; then
+            gh issue create --repo ${{ github.repository }} --title "[SCHEDULED-BUILD] Build & Test failure" --body "$body"
+          else
+            gh issue comment --repo ${{ github.repository }} $issue_num --body "$body"
+          fi
+        env:
+          GH_TOKEN: ${{ github.token }}