Add a job summary

.github/workflows/test.yml

@@ -15,9 +15,9 @@ jobs:
       - name: Run this action
         uses: ./
         with:
-          fork_repo: thebrowsercompany/firebase-cpp-sdk
-          fork_branch: compnerd/swift
-          upstream_repo: firebase/firebase-cpp-sdk
+          fork_repo: kendalharland/swift-build
+          fork_branch: main
+          upstream_repo: compnerd/swift-build
           upstream_branch: main
           dry_run: true
 

action.yml

@@ -52,6 +52,22 @@ runs:
 
         git remote add upstream https://${{ inputs.upstream_host }}/${{ inputs.upstream_repo }}
         git fetch upstream ${{ inputs.upstream_branch }} 
+
+        # Store the list of commits we're about to rebase as a job summary:
+        $NewCommitsFromUpstream=(git log --format="[%h] %s" --no-merges upstream/${{ inputs.upstream_branch }} ^${{ inputs.fork_branch }})
+        echo "``````mermaid" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+        echo "gitGraph TB:" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+        echo "options" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+        echo "{" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+        echo "  `"mainBranchName`": `"${{ inputs.upstream_repo}}/${{ inputs.upstream_branch }}`"" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+        echo "}" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+        echo "end" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+        foreach ($Commit in $NewCommitsFromUpstream) {
+          $Commit=$Commit -replace "`"","'"
+          echo "commit id: `"${Commit}`"" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+        }
+        echo "``````" | Out-File -Append -Encoding utf8 $env:GITHUB_STEP_SUMMARY
+
         git checkout ${{ inputs.fork_branch }}
         git rebase upstream/${{ inputs.upstream_branch }}