keep-warm.yml

name: Keep backend warm

# Render's free tier spins the service down after ~15 min idle, causing a ~40s
# cold start on the next request (users saw auth timeouts + "cannot reach server").
# This pings the health endpoint on a schedule so the instance stays awake.
on:
  schedule:
    - cron: "*/10 * * * *" # every 10 minutes
  workflow_dispatch: {}

jobs:
  ping:
    runs-on: ubuntu-latest
    steps:
      - name: Ping health endpoint
        run: |
          for i in 1 2 3; do
            STATUS=$(curl -s -m 60 -o /dev/null -w "%{http_code}" https://archmind-ai.onrender.com/api/health)
            if [ "$STATUS" = "200" ]; then
              echo "Backend awake (HTTP $STATUS)"
              exit 0
            fi
            echo "Attempt $i: HTTP $STATUS — retrying in 20s"
            sleep 20
          done
          echo "Backend did not respond 200 after 3 attempts"
          exit 1