"""Regression coverage for implicit live-runtime auxiliary cache keys.

#49151/#49156 is specifically the ``provider='auto'`` path where callers omit
``main_runtime`` after a mid-session model switch.  This is distinct from
#56889, which isolates callers that pass different explicit ``model=`` values.
"""

import asyncio
from concurrent.futures import ThreadPoolExecutor
from threading import Barrier
from types import SimpleNamespace
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

import agent.auxiliary_client as aux


@pytest.fixture(autouse=True)
def _clean_aux_state():
    aux.shutdown_cached_clients()
    aux.clear_runtime_main()
    yield
    aux.shutdown_cached_clients()
    aux.clear_runtime_main()


def _runtime(model: str, *, provider: str = "custom:llama-swap") -> dict:
    return {
        "provider": provider,
        "model": model,
        "base_url": "http://llama-swap.test/v1",
        "api_key": "local-key",
        "api_mode": "chat_completions",
        "auth_mode": "api_key",
    }




def test_implicit_runtime_cache_key_covers_full_connection_and_auth_surface():
    """Provider/endpoint/credential/wire/auth changes all isolate auto clients."""
    base = _runtime("same-model")
    variants = [
        {**base, "provider": "custom:other"},
        {**base, "base_url": "https://other.test/v1"},
        {**base, "api_key": "other-key"},
        {**base, "api_mode": "codex_responses"},
        {**base, "auth_mode": "entra_id", "api_key": lambda: "token"},
    ]

    aux.set_runtime_main(**base)
    baseline = aux._client_cache_key("auto", async_mode=False)
    keys = []
    for variant in variants:
        aux.set_runtime_main(**variant)
        keys.append(aux._client_cache_key("auto", async_mode=False))

    assert all(key != baseline for key in keys)
    assert len(set(keys)) == len(keys)






def test_runtime_context_token_restores_previous_value_after_turn():
    """Turn-scoped runtime binding must not leak into later work in the same context."""
    token = aux.set_runtime_main(**_runtime("turn-model"))
    assert aux._normalize_main_runtime(None)["model"] == "turn-model"

    aux.reset_runtime_main(token)

    assert aux._normalize_main_runtime(None) == {}








def test_explicit_model_cache_isolation_remains_independent_of_runtime_key():
    """#56889 remains covered: explicit model values isolate non-auto clients."""
    first = aux._client_cache_key(
        "openrouter", async_mode=False, model="anthropic/claude-opus-4.8"
    )
    second = aux._client_cache_key(
        "openrouter", async_mode=False, model="openai/gpt-5.5"
    )

    assert first != second










def test_unhashable_callable_runtime_api_keys_are_safe_secret_free_discriminators():
    """Callable token providers remain cacheable without leaking returned tokens."""

    class TokenProvider(list):
        def __init__(self, token: str):
            super().__init__()
            self.token = token

        def __call__(self) -> str:
            return self.token

    first_provider = TokenProvider("first-super-secret-token")
    second_provider = TokenProvider("second-super-secret-token")

    first = aux._client_cache_key(
        "auto", async_mode=False, main_runtime={**_runtime("same"), "api_key": first_provider}
    )
    second = aux._client_cache_key(
        "auto", async_mode=False, main_runtime={**_runtime("same"), "api_key": second_provider}
    )

    hash(first)
    hash(second)
    assert first != second
    rendered = repr((first, second))
    assert "first-super-secret-token" not in rendered
    assert "second-super-secret-token" not in rendered


def test_string_api_keys_are_not_retained_in_cache_key_repr():
    """String credentials discriminate clients without living in cache-key memory."""
    first_secret = "first-literal-super-secret"
    second_secret = "second-literal-super-secret"
    first = aux._client_cache_key(
        "auto",
        async_mode=False,
        api_key=first_secret,
        main_runtime={**_runtime("same"), "api_key": first_secret},
    )
    second = aux._client_cache_key(
        "auto",
        async_mode=False,
        api_key=second_secret,
        main_runtime={**_runtime("same"), "api_key": second_secret},
    )

    assert first != second
    rendered = repr((first, second))
    assert first_secret not in rendered
    assert second_secret not in rendered