name: Keep HF Space Alive

on:
  schedule:
    - cron: "*/20 * * * *"   # every 20 minutes — prevents sleep
    - cron: "0 9 * * 1"      # every Monday 09:00 UTC — heartbeat commit
  workflow_dispatch:           # manual trigger from GitHub UI

permissions:
  contents: write

jobs:
  ping:
    name: Ping HF Space
    runs-on: ubuntu-latest
    steps:
      - name: Wake / keep alive
        run: |
          STATUS=$(curl -o /dev/null -s -w "%{http_code}" \
            --max-time 30 --retry 3 --retry-delay 5 \
            https://irajkoohi-multimodalrag.hf.space)
          echo "Response status: $STATUS"

  heartbeat:
    name: Weekly heartbeat commit
    runs-on: ubuntu-latest
    if: github.event.schedule == '0 9 * * 1'
    steps:
      - uses: actions/checkout@v4
      - name: Write heartbeat timestamp
        run: |
          echo "Last heartbeat: $(date -u '+%Y-%m-%d %H:%M UTC')" > .github/heartbeat.txt
      - name: Commit and push
        run: |
          git config user.name  "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add .github/heartbeat.txt
          git commit -m "chore: weekly heartbeat $(date -u '+%Y-%m-%d')"
          git push