import json
from pathlib import Path

from midnight_static.pipeline import run_fixture_pipeline


def test_fixture_pipeline_writes_script_and_audio(tmp_path: Path):
    result = run_fixture_pipeline("a lighthouse that broadcasts dreams", tmp_path)

    script_path = Path(result["script"])
    audio_path = Path(result["audio"])

    assert result["mode"] == "placeholder"
    assert result["writer"] == "fixture"
    assert script_path.exists()
    assert audio_path.exists()
    assert audio_path.stat().st_size > 10_000
    assert '"title"' in script_path.read_text(encoding="utf-8")


def test_fixture_pipeline_accepts_genre(tmp_path: Path):
    result = run_fixture_pipeline(
        "a honeymoon hotel room that keeps checking in new guests",
        tmp_path,
        genre="romance",
    )

    payload = json.loads(Path(result["script"]).read_text(encoding="utf-8"))

    assert payload["genre"] == "romance"
    assert payload["music"]["genre"] == "romance"


def test_fixture_pipeline_rejects_unknown_mode(tmp_path: Path):
    try:
        run_fixture_pipeline("static", tmp_path, mode="missing")
    except ValueError as exc:
        assert "unknown pipeline mode" in str(exc)
    else:
        raise AssertionError("expected unknown mode to fail")