name: Keep HF Space Alive

on:
  schedule:
    - cron: '0 5 * * *'   # Daily at 05:00 UTC
  workflow_dispatch:       # Allow manual trigger

permissions:
  contents: write

jobs:
  heartbeat:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Install pandas
        run: pip install pandas

      - name: Refresh FRED demo data
        continue-on-error: true   # Don't break heartbeat if FRED is down
        run: python scripts/download_fred_data.py

      - name: Generate heartbeat CSV
        run: |
          APP_LIVE_DATE="2026-02-11"
          TODAY=$(date -u +%Y-%m-%d)
          DAYS=$(( ( $(date -u -d "$TODAY" +%s) - $(date -u -d "$APP_LIVE_DATE" +%s) ) / 86400 ))
          echo "date,days_since_app_went_live" > data/heartbeat.csv
          echo "${TODAY},${DAYS}" >> data/heartbeat.csv
          cat data/heartbeat.csv

      - name: Commit and push to GitHub
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add data/
          git diff --staged --quiet || git commit -m "Daily heartbeat + FRED refresh: $(date -u +%Y-%m-%d)"
          git push

      - name: Sync to HF Spaces
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
        run: |
          git remote add hf "https://fmegahed:${HF_TOKEN}@huggingface.co/spaces/fmegahed/timeseries_visualization" || \
            git remote set-url hf "https://fmegahed:${HF_TOKEN}@huggingface.co/spaces/fmegahed/timeseries_visualization"
          git push hf HEAD:main --force