from __future__ import annotations

from govoplan_core.core.appearance import resolve_effective_appearance, update_appearance_settings


def test_appearance_precedence_and_inheritance() -> None:
    decision = resolve_effective_appearance(
        system_settings={"appearance": {"default_palette": "civic_blue"}},
        tenant_settings={"appearance": {"default_palette": "forest"}},
        user_settings={"ui": {"palette": "plum"}},
    )
    assert (decision.palette, decision.source, decision.locked) == ("plum", "user", False)

    inherited = resolve_effective_appearance(
        system_settings={"appearance": {"default_palette": "civic_blue"}},
        tenant_settings={"appearance": {"default_palette": "forest"}},
        user_settings={"ui": {"palette": None}},
    )
    assert (inherited.palette, inherited.source) == ("forest", "tenant")


def test_system_lock_wins_and_invalid_values_fail_safe() -> None:
    decision = resolve_effective_appearance(
        system_settings={"appearance": {"default_palette": "civic_blue", "palette_locked": True}},
        tenant_settings={"appearance": {"default_palette": "forest", "palette_locked": True}},
        user_settings={"ui": {"palette": "plum"}},
    )
    assert decision.as_dict() == {
        "palette": "civic_blue",
        "source": "system_lock",
        "locked": True,
        "system_default_palette": "civic_blue",
        "tenant_default_palette": "forest",
        "inherited_palette": "civic_blue",
    }
    fallback = resolve_effective_appearance(
        system_settings={"appearance": {"default_palette": "unsafe"}},
        tenant_settings={},
        user_settings={"ui": {"palette": "unknown"}},
    )
    assert (fallback.palette, fallback.source) == ("default", "system")


def test_appearance_settings_reset_without_touching_neighbors() -> None:
    configured = update_appearance_settings(
        {"neighbor": {"kept": True}},
        default_palette="forest",
        palette_locked=True,
    )
    assert configured["neighbor"] == {"kept": True}
    assert configured["appearance"] == {"default_palette": "forest", "palette_locked": True}
    assert update_appearance_settings(configured, default_palette=None, palette_locked=False) == {
        "neighbor": {"kept": True}
    }