"""Tests for the config endpoint and stage palette."""

from detect.stages import list_stages, get_palette


def test_stage_palette_has_config_fields():
    """Every stage with config fields should be servable by the endpoint."""
    stages = list_stages()
    stages_with_config = [s for s in stages if s.config_fields]

    assert len(stages_with_config) > 0

    for stage in stages_with_config:
        for field in stage.config_fields:
            assert field.name
            assert field.type
            assert field.default is not None or field.type == "bool"


def test_palette_categories():
    palette = get_palette()

    expected_categories = {"preprocessing", "detection", "resolution", "escalation", "output"}
    actual_categories = set(palette.keys())

    assert actual_categories == expected_categories


def test_stage_config_serializable():
    """Config fields should be JSON-serializable for the API response."""
    import json

    stages = list_stages()
    for stage in stages:
        data = {
            "name": stage.name,
            "label": stage.label,
            "config_fields": [
                {"name": f.name, "type": f.type, "default": f.default}
                for f in stage.config_fields
            ],
        }
        json_str = json.dumps(data)
        assert len(json_str) > 0