Remove 3rd party support; only console + 1st party

Author: Daraan

.github/workflows/ci.yml

@@ -92,15 +92,14 @@ jobs:
           python -m unittest test_typing_extensions.py
 
       - name: Archive code coverage results
+        id: archive-coverage
         if: ${{ !startsWith(matrix.python-version, 'pypy') }}
         uses: actions/upload-artifact@v4
         with:
           name: .coverage_${{ matrix.python-version }}
           path: ./src/.coverage*
           include-hidden-files: true
           compression-level: 0 # no compression
-
-
       - name: Test CPython typing test suite
         # Test suite fails on PyPy even without typing_extensions
         if: ${{ !startsWith(matrix.python-version, 'pypy') }}
@@ -109,6 +108,9 @@ jobs:
           # Run the typing test suite from CPython with typing_extensions installed,
           # because we monkeypatch typing under some circumstances.
           python -c 'import typing_extensions; import test.__main__' test_typing -v
+    outputs:
+      # report if coverage was uploaded
+      cov_uploaded: ${{ steps.archive-coverage.outputs.artifact-id }}
 
   create-issue-on-failure:
     name: Create an issue if daily tests failed
@@ -138,14 +140,19 @@ jobs:
               title: `Daily tests failed on ${new Date().toDateString()}`,
               body: "Runs listed here: https://github.com/python/typing_extensions/actions/workflows/ci.yml",
             })
-  prepare-report-coverage:
+
+  report-coverage:
     name: Report coverage
 
     runs-on: ubuntu-latest
 
     needs: [tests]
 
-    if: ${{ always() }}
+    permissions:
+      pull-requests: write
+
+    # Job will run even if tests failed but only if at least one artifact was uploaded
+    if: ${{ always() && needs.tests.outputs.cov_uploaded != '' }}
 
     steps:
       - uses: actions/checkout@v4
@@ -171,12 +178,39 @@ jobs:
           ls -aR .coverage*
           coverage combine .coverage*
           echo "Creating coverage report..."
+          # Create a coverage report (console)
           coverage report
+          # Create xml file for further processing
           coverage xml
 
+      # For future use in case we want to add a PR comment for 3rd party PRs which requires
+      # a workflow with elevated PR write permissions. Move below steps into a separate job.
       - name: Archive code coverage report
         uses: actions/upload-artifact@v4
         with:
           name: coverage
           path: coverage.xml
-          compression-level: 0 # no compression
+
+      - name: Code Coverage Report
+        uses: irongut/CodeCoverageSummary@51cc3a756ddcd398d447c044c02cb6aa83fdae95 # v1.3.0
+        with:
+          filename: coverage.xml
+          badge: true
+          fail_below_min: true
+          format: markdown
+          hide_branch_rate: false
+          hide_complexity: true
+          indicators: true
+          output: both  # console, file or both
+          thresholds: '90 95'
+
+      - name: Add Coverage PR Comment
+        uses: marocchino/sticky-pull-request-comment@52423e01640425a022ef5fd42c6fb5f633a02728  # v2.9.3
+        # Create PR comment when the branch is on the repo, otherwise we lack PR write permissions
+        # -> need another workflow with access to secret token
+        if: >-
+          github.event_name == 'pull_request'
+          && github.event.pull_request.head.repo.full_name == github.repository
+        with:
+          recreate: true
+          path: code-coverage-results.md