name: CI

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

jobs:
  smoke:
    name: Syntax + Import Smoke Test
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

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

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

      - name: Python syntax check (all tracked .py files)
        run: |
          python -m compileall -q env api server app.py colab_submission_script.py

      - name: Import environment modules
        run: |
          python -c "from env.cache import CDNCacheEnv, TASK_CONFIGS; print('env.cache OK, tasks:', list(TASK_CONFIGS.keys()))"
          python -c "from env.models import Action, Observation, FileEntry, Reward, StepResult, TaskConfig; print('env.models OK')"

      - name: One-episode baseline smoke run
        run: |
          python - <<'PY'
          from env.cache import CDNCacheEnv
          from env.models import Action
          env = CDNCacheEnv(task_id="task_easy", seed=0)
          env.reset()
          total = 0.0
          for _ in range(20):
              result = env.step(Action(evict_file_id=None))
              total += result.reward.total
              if result.done:
                  break
          print(f"Smoke OK - 20 steps, reward sum={total:.3f}")
          PY

      - name: Reproducible evaluator (quick)
        run: python scripts/eval.py --quick