name: HF Space keep-warm

# Periodic ping of the deployed HF Space so judges hitting it during
# the hackathon window land on a warm container, not a 30-60s cold-start.
# GitHub Actions free-tier cron has best-effort scheduling (may drift
# 5-15 min); for judging mornings, supplement with a manual run via
# workflow_dispatch.

on:
  schedule:
    - cron: "*/12 * * * *"
  workflow_dispatch:

jobs:
  ping:
    runs-on: ubuntu-latest
    timeout-minutes: 3
    steps:
      - name: Ping HF Space surface
        run: |
          set -u
          BASE=https://ujjwalpardeshi-chakravyuh.hf.space
          UA="Chakravyuh-KeepWarm/1.0 (+https://github.com/UjjwalPardeshi/Chakravyuh)"
          fail=0
          for path in / /health /demo/ /eval; do
            code=$(curl -sw '%{http_code}' -o /dev/null --max-time 30 \
              -H "User-Agent: $UA" "$BASE$path")
            echo "$path -> $code"
            case "$code" in
              2*|301|302|307|308|405) ;;
              *) echo "::warning::Space returned $code on $path"; fail=$((fail+1)) ;;
            esac
          done
          # Treat as soft signal — keep-warm is best-effort, never fail the action.
          echo "fail count: $fail"