cancel_on_merged.yml

name: Cancel Workflows on PR Merge

on:
  pull_request:
    types: [closed]

jobs:
  cancel_workflows:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest
    steps:
      - name: Cancel Related Workflow Runs
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const { owner, repo } = context.repo;
            const prNumber = context.payload.pull_request.number;
            const headSha = context.payload.pull_request.head.sha;

            console.log(`Cancelling workflows related to PR #${prNumber} (SHA: ${headSha})`);

            // Retrieve all workflow runs associated with the head SHA of the PR.
            const runs = await github.rest.actions.listWorkflowRunsForRepo({
              owner,
              repo,
              head_sha: headSha,
              status: 'in_progress',
            });

            if (runs.data.workflow_runs.length === 0) {
              console.log('No workflow runs found to cancel.');
              return;
            }

            // Cancel all related workflow runs.
            for (const run of runs.data.workflow_runs) {
              console.log(`Cancel workflow run: ${run.id} (${run.name})`);
              await github.rest.actions.cancelWorkflowRun({
                owner,
                repo,
                run_id: run.id,
              });
            }

            console.log('All related workflow runs have been canceled.');