name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        python-version: ["3.9", "3.11", "3.12"]

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}
          cache: pip

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt
          pip install httpx

      - name: Lint
        run: |
          pip install ruff
          ruff check .

      - name: Byte-compile every module
        run: python -m compileall -q ashvale scripts run.py

      - name: Import check
        run: python -c "import ashvale.api; print('imports ok')"

      - name: Seed synthetic history
        run: python scripts/simulate.py --days 10 --wipe

      # The backtest is the real test: it exercises features, the RLS heads,
      # climatology and conformal calibration end to end, and fails loudly if
      # any of them stop producing finite numbers.
      - name: Walk-forward backtest
        run: python scripts/evaluate.py --train-frac 0.6 --hours 300

      - name: Exercise the API surface
        run: |
          python - <<'PY'
          from fastapi.testclient import TestClient
          import ashvale.api as api
          with TestClient(api.app) as c:
              for ep in ["/api/telemetry", "/api/status", "/api/forecast",
                         "/api/outlook", "/api/precipitation", "/api/anomaly",
                         "/api/models", "/api/scorecard", "/api/records",
                         "/api/storage", "/api/methods",
                         "/api/history/range?hours=24",
                         "/api/history/daily?days=5", "/"]:
                  r = c.get(ep)
                  assert r.status_code == 200, (ep, r.status_code, r.text[:200])
              assert c.post("/api/train").json()["trained"] is True
              assert len(c.get("/api/export.csv?hours=6").text.splitlines()) > 1
          print("api surface ok")
          PY