"""Settings metadata retains platform choices, numeric bounds and scope dependencies."""

import pytest
from fastapi import HTTPException

from app.catalog.research_metadata import ResearchMetadata, setting_rows
from tests.catalog_fake import platform_response


def settings_response():
    data = platform_response()
    children = data["actions"]["POST"]["settings"]["children"]
    children["neutralization"] = {"choices": [{"value": "INDUSTRY"}, {"value": "NONE"}]}
    children["decay"] = {"min_value": 0, "max_value": 500}
    children["truncation"] = {"choices": [{"value": 0.05}, {"value": 0.08}]}
    children["visualization"] = {"choices": [{"value": False}, {"value": True}]}
    children["nanHandling"] = {"choices": {"instrumentType": {"EQUITY": {"region": {
        region: {"delay": {str(delay): [{"value": "OFF" if delay == 0 else "ON"}] for delay in [0, 1]}}
        for region in ["USA", "CHN", "IND"]
    }}}}}
    return data


def test_metadata_preserves_types_and_resolves_delay():
    rows = setting_rows(settings_response())
    first = next(r for r in rows if r["region"] == "USA" and r["delay"] == 0)
    second = next(r for r in rows if r["region"] == "USA" and r["delay"] == 1)
    assert first["fields"]["decay"] == {"minimum": 0, "maximum": 500}
    assert first["fields"]["truncation"]["choices"] == [0.05, 0.08]
    assert first["fields"]["visualization"]["choices"] == [False, True]
    assert first["fields"]["nanHandling"]["choices"] == ["OFF"]
    assert second["fields"]["nanHandling"]["choices"] == ["ON"]
    assert first["neutralizations"] == ["INDUSTRY", "NONE"]


async def test_refresh_publishes_fields_and_keeps_previous_snapshot_on_invalid_options(app):
    class Client:
        async def research_setting_options(self):
            return settings_response()

    async with app.state.sessions.begin() as db:
        service = ResearchMetadata(db, Client())
        previous = await service.refresh_settings()
        assert previous["content"]["items"][0]["fields"]["visualization"]["choices"] == [False, True]

        class InvalidClient:
            async def research_setting_options(self):
                data = settings_response()
                data["actions"]["POST"]["settings"]["children"]["nanHandling"]["choices"] = {"unsupported": []}
                return data

        service.client = InvalidClient()
        with pytest.raises(HTTPException) as error:
            await service.refresh_settings()
        assert error.value.status_code == 502
        assert (await service.get("settings"))["content"] == previous["content"]