name: Cleanup stuck workflow runs

on:
  schedule:
    - cron: '*/30 * * * *'
  workflow_dispatch:

permissions:
  actions: write

jobs:
  cleanup:
    runs-on: ubuntu-latest
    steps:
      - name: Cancel stuck workflow runs
        uses: actions/github-script@v7
        env:
          STALE_THRESHOLD_HOURS: '2'
        with:
          script: |
            const thresholdHours = Number(process.env.STALE_THRESHOLD_HOURS || 2);
            const thresholdMs = thresholdHours * 60 * 60 * 1000;
            const now = Date.now();

            const statuses = ['queued', 'in_progress'];
            const owner = context.repo.owner;
            const repo = context.repo.repo;
            const staleRuns = [];

            for (const status of statuses) {
              const runs = await github.paginate(github.rest.actions.listWorkflowRunsForRepo, {
                owner,
                repo,
                status,
                per_page: 100,
              });

              for (const run of runs) {
                const createdAt = Date.parse(run.created_at);
                if (Number.isNaN(createdAt)) {
                  core.warning(`Skipping run ${run.id} (${run.name}) due to invalid created_at.`);
                  continue;
                }

                const ageMs = now - createdAt;
                if (ageMs > thresholdMs) {
                  staleRuns.push({
                    id: run.id,
                    name: run.name,
                    status: run.status,
                    created_at: run.created_at,
                    html_url: run.html_url,
                  });
                }
              }
            }

            if (staleRuns.length === 0) {
              core.info(`No runs older than ${thresholdHours} hours found in queued/in_progress.`);
              return;
            }

            core.info(`Found ${staleRuns.length} stale runs older than ${thresholdHours} hours.`);

            for (const run of staleRuns) {
              core.info(`Canceling run ${run.id} (${run.name}) status=${run.status} created_at=${run.created_at} url=${run.html_url}`);
              await github.request('POST /repos/{owner}/{repo}/actions/runs/{run_id}/force-cancel', {
                owner,
                repo,
                run_id: run.id,
              });
            }