name: refresh event list

on:
  schedule:
    - cron: "17 * * * *"    # hourly at :17
  workflow_dispatch:

permissions:
  contents: write

concurrency:
  group: refresh-events
  cancel-in-progress: true

jobs:
  refresh:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Fetch Polymarket events + extract negRisk
        shell: bash
        run: |
          set -euo pipefail
          mkdir -p docs/data
          curl -sSLf \
            "https://gamma-api.polymarket.com/events?closed=false&archived=false&active=true&limit=25&order=volume24hr&ascending=false" \
            -o /tmp/raw.json
          python3 - <<'PY'
          import json, os, datetime, pathlib
          raw = json.loads(pathlib.Path('/tmp/raw.json').read_text(encoding='utf-8'))
          neg = [e for e in raw if e.get('negRisk')]
          out = []
          for ev in neg:
              markets = ev.get('markets') or []
              if len(markets) < 2:
                  continue
              outcomes = []
              ok = True
              for i, m in enumerate(markets):
                  if m.get('closed') or m.get('archived'):
                      ok = False; break
                  ids = m.get('clobTokenIds')
                  if isinstance(ids, str):
                      try: ids = json.loads(ids)
                      except Exception: ids = None
                  if not isinstance(ids, list) or not ids:
                      ok = False; break
                  name = m.get('groupItemTitle') or m.get('outcome') or m.get('question') or f'Outcome {i+1}'
                  outcomes.append({'token_id': str(ids[0]), 'name': str(name)})
              if not ok or len(outcomes) < 2:
                  continue
              out.append({
                  'id':    ev.get('negRiskMarketID') or str(ev.get('id')),
                  'title': ev.get('title') or ev.get('slug') or 'Event',
                  'slug':  ev.get('slug'),
                  'outcomes': outcomes,
              })
              if len(out) >= 8:
                  break
          payload = {
              'generated_at': datetime.datetime.now(datetime.UTC).isoformat(),
              'events': out,
          }
          pathlib.Path('docs/data/events.json').write_text(
              json.dumps(payload, indent=2, ensure_ascii=False), encoding='utf-8'
          )
          print(f'wrote {len(out)} events')
          PY

      - name: Commit if changed
        run: |
          if git diff --quiet docs/data/events.json; then
            echo "no change"
            exit 0
          fi
          git config user.name  "events-refresh-bot"
          git config user.email "events-refresh-bot@users.noreply.github.com"
          git add docs/data/events.json
          git commit -m "chore(events): refresh snapshot $(date -u +%Y-%m-%dT%H:%MZ)"
          git push