/.github/workflows/cleanup-runs.yml

name: Cleanup Workflow Runs
run-name: |
  Cleanup: ${{
    github.event_name == 'schedule' && 'Weekly scheduled cleanup' ||
    format('Manual cleanup by @{0}', github.actor)
  }}

on:
  schedule:
    # Run every Thursday at midnight UTC
    - cron: "0 0 * * 4"
  workflow_dispatch:

jobs:
  cleanup:
    name: Delete Non-Release Runs
    runs-on: ubuntu-latest
    permissions:
      actions: write

    steps:
      - name: Delete old workflow runs not tied to release tags
        env:
          GH_TOKEN: ${{ github.token }}
          GH_REPO: ${{ github.repository }}
        run: |
          echo "Fetching workflow runs..."

          # Calculate cutoff date (3 days ago)
          cutoff=$(date -u -d '3 days ago' '+%Y-%m-%dT%H:%M:%SZ')
          echo "Deleting non-release runs older than: $cutoff"

          # Get all runs where:
          # - headBranch doesn't start with "v" (not a release tag)
          # - createdAt is older than 3 days
          runs_to_delete=$(gh run list --json databaseId,headBranch,createdAt --limit 1000 | \
            jq -r --arg cutoff "$cutoff" \
            '.[] | select((.headBranch | startswith("v") | not) and (.createdAt < $cutoff)) | .databaseId')

          if [ -z "$runs_to_delete" ]; then
            echo "No old non-release runs to delete."
            exit 0
          fi

          count=$(echo "$runs_to_delete" | wc -l)
          echo "Found $count runs to delete..."

          # Delete each run
          echo "$runs_to_delete" | while read -r run_id; do
            echo "Deleting run $run_id..."
            gh run delete "$run_id" || echo "Failed to delete run $run_id (may already be deleted)"
          done

          echo "Cleanup complete!"