Delete-Old-Workflow-Runs.yml

name: Delete Old Workflow Runs

on:
  schedule:
    # Run every 20th of the month at 08:00
    - cron: '0 8 20 * *'
  workflow_dispatch:
    inputs:
      retain_days:
        description: 'Days of workflow runs to keep'
        required: true
        default: '180'
      retain_runs:
        description: 'Minimum number of workflow runs to keep'
        required: true
        default: '10'

jobs:
  delete_old_workflow_runs:
    name: Delete Old Workflow Runs
    runs-on: ubuntu-latest
    steps:
      - name: Set environment variables
        env:
          DEFAULT_RETAIN_DAYS: '180'
          DEFAULT_RETAIN_RUNS: '10'
        run: |
          echo "RETAIN_DAYS=${{ github.event.inputs.retain_days || env.DEFAULT_RETAIN_DAYS }}" >> $GITHUB_ENV
          echo "RETAIN_RUNS=${{ github.event.inputs.retain_runs || env.DEFAULT_RETAIN_RUNS }}" >> $GITHUB_ENV
      - name: Delete workflow runs older than ${{ env.RETAIN_DAYS }} days, keeping ${{ env.RETAIN_RUNS }} runs
        uses: Mattraks/delete-workflow-runs@v2.0.2
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          repository: ${{ github.repository }}
          retain_days: ${{ env.RETAIN_DAYS }}
          keep_minimum_runs: ${{ env.RETAIN_RUNS }}