"""Desktop Settings → Model → Auxiliary can set a task's reasoning effort (#89259, salvage #90649).

``POST /api/model/set`` carries ``reasoning_effort`` for an auxiliary task: omitted → the task's
override is left alone; explicit null → cleared (inherit); a level → set. Runtime reads it from
``auxiliary.<task>.reasoning_effort`` (``agent/auxiliary_client.py``).
"""

import pytest
from fastapi import HTTPException

from hermes_cli.web_server_config import _UNSET, _apply_aux_assignment_sync


@pytest.fixture
def saved(monkeypatch):
    store: dict = {}
    monkeypatch.setattr("hermes_cli.config.save_config", lambda cfg: store.update(cfg))
    return store


def test_reasoning_effort_field_semantics_omitted_null_and_level(saved):
    cfg = {"auxiliary": {"vision": {"provider": "openrouter", "model": "m1", "reasoning_effort": "low"}}}

    # A plain provider/model re-assignment leaves an existing override alone.
    _apply_aux_assignment_sync(cfg, "openrouter", "m2", "vision", "", "")
    assert cfg["auxiliary"]["vision"] == {"provider": "openrouter", "model": "m2", "reasoning_effort": "low"}

    # A level sets it (canonicalised) and the response echoes it; a disable is stored as the explicit "none".
    out = _apply_aux_assignment_sync(cfg, "openrouter", "m2", "vision", "", "", reasoning_effort="HIGH")
    assert cfg["auxiliary"]["vision"]["reasoning_effort"] == "high" and out["reasoning_effort"] == "high"
    _apply_aux_assignment_sync(cfg, "openrouter", "m2", "vision", "", "", reasoning_effort="disabled")
    assert cfg["auxiliary"]["vision"]["reasoning_effort"] == "none"

    # Explicit null clears only this task's key; siblings and the pick survive.
    cfg["auxiliary"]["compression"] = {"provider": "openrouter", "model": "m3", "reasoning_effort": "max"}
    _apply_aux_assignment_sync(cfg, "openrouter", "m2", "vision", "", "", reasoning_effort=None)
    assert "reasoning_effort" not in cfg["auxiliary"]["vision"]
    assert cfg["auxiliary"]["vision"]["model"] == "m2"
    assert cfg["auxiliary"]["compression"]["reasoning_effort"] == "max"
    assert saved["auxiliary"] == cfg["auxiliary"]


def test_unknown_level_is_rejected_and_reset_clears_overrides(saved):
    cfg = {"auxiliary": {"vision": {"provider": "openrouter", "model": "m1"}}}
    with pytest.raises(HTTPException) as exc:
        _apply_aux_assignment_sync(cfg, "openrouter", "m1", "vision", "", "", reasoning_effort="turbo")
    assert exc.value.status_code == 400 and "reasoning_effort" in exc.value.detail
    assert "reasoning_effort" not in cfg["auxiliary"]["vision"]

    cfg["auxiliary"]["vision"]["reasoning_effort"] = "high"
    _apply_aux_assignment_sync(cfg, "", "", "__reset__", "", "", reasoning_effort=_UNSET)
    assert all("reasoning_effort" not in slot for slot in cfg["auxiliary"].values())