from __future__ import annotations

import jwt
import pytest

from ariadne.auth.keycloak import Authenticator, KeycloakOIDC


def _make_token(kid: str = "test") -> str:
    return jwt.encode(
        {"sub": "user"},
        "secret",
        algorithm="HS256",
        headers={"kid": kid},
    )


def test_keycloak_verify_accepts_matching_audience(monkeypatch) -> None:
    token = _make_token()
    kc = KeycloakOIDC("https://jwks", "https://issuer", "portal")

    monkeypatch.setattr(kc, "_get_jwks", lambda force=False: {"keys": [{"kid": "test"}]})
    monkeypatch.setattr(jwt.algorithms.RSAAlgorithm, "from_jwk", lambda key: "dummy")
    monkeypatch.setattr(
        jwt,
        "decode",
        lambda *args, **kwargs: {"azp": "portal", "preferred_username": "alice", "groups": ["/admin"]},
    )

    claims = kc.verify(token)
    assert claims["preferred_username"] == "alice"


def test_keycloak_verify_rejects_wrong_audience(monkeypatch) -> None:
    token = _make_token()
    kc = KeycloakOIDC("https://jwks", "https://issuer", "portal")

    monkeypatch.setattr(kc, "_get_jwks", lambda force=False: {"keys": [{"kid": "test"}]})
    monkeypatch.setattr(jwt.algorithms.RSAAlgorithm, "from_jwk", lambda key: "dummy")
    monkeypatch.setattr(
        jwt,
        "decode",
        lambda *args, **kwargs: {"azp": "other", "aud": ["other"]},
    )

    with pytest.raises(ValueError):
        kc.verify(token)


def test_keycloak_verify_missing_token() -> None:
    kc = KeycloakOIDC("https://jwks", "https://issuer", "portal")
    with pytest.raises(ValueError):
        kc.verify("")


def test_keycloak_verify_missing_kid(monkeypatch) -> None:
    kc = KeycloakOIDC("https://jwks", "https://issuer", "portal")
    monkeypatch.setattr(jwt, "get_unverified_header", lambda token: {})

    with pytest.raises(ValueError):
        kc.verify("header.payload.sig")


def test_keycloak_verify_refreshes_jwks(monkeypatch) -> None:
    token = _make_token()
    kc = KeycloakOIDC("https://jwks", "https://issuer", "portal")
    calls = {"force": []}

    def fake_get_jwks(force=False):
        calls["force"].append(force)
        if not force:
            return {"keys": [{"kid": "other"}]}
        return {"keys": [{"kid": "test"}]}

    monkeypatch.setattr(kc, "_get_jwks", fake_get_jwks)
    monkeypatch.setattr(jwt.algorithms.RSAAlgorithm, "from_jwk", lambda key: "dummy")
    monkeypatch.setattr(
        jwt,
        "decode",
        lambda *args, **kwargs: {"azp": "other", "aud": "portal", "preferred_username": "alice"},
    )

    claims = kc.verify(token)
    assert calls["force"] == [False, True]
    assert claims["preferred_username"] == "alice"


def test_keycloak_verify_kid_not_found(monkeypatch) -> None:
    token = _make_token()
    kc = KeycloakOIDC("https://jwks", "https://issuer", "portal")
    monkeypatch.setattr(kc, "_get_jwks", lambda force=False: {"keys": []})

    with pytest.raises(ValueError):
        kc.verify(token)


def test_authenticator_normalizes_groups(monkeypatch) -> None:
    token = _make_token()
    auth = Authenticator()

    monkeypatch.setattr(
        auth._oidc,
        "verify",
        lambda token: {"preferred_username": "bob", "groups": ["/admin", 123, "dev"]},
    )

    ctx = auth.authenticate(token)
    assert ctx.username == "bob"
    assert ctx.groups == ["admin", "dev"]


def test_authenticator_normalizes_groups_non_list(monkeypatch) -> None:
    token = _make_token()
    auth = Authenticator()

    monkeypatch.setattr(auth._oidc, "verify", lambda token: {"preferred_username": "bob", "groups": "admin"})

    ctx = auth.authenticate(token)
    assert ctx.groups == []


def test_keycloak_get_jwks_invalid_payload(monkeypatch) -> None:
    kc = KeycloakOIDC("https://jwks", "https://issuer", "portal")

    class DummyClient:
        def __enter__(self):
            return self

        def __exit__(self, exc_type, exc, tb):
            return False

        def get(self, url):
            return type("Resp", (), {"raise_for_status": lambda self: None, "json": lambda self: []})()

    monkeypatch.setattr("ariadne.auth.keycloak.httpx.Client", lambda *args, **kwargs: DummyClient())

    with pytest.raises(ValueError):
        kc._get_jwks(force=True)


def test_keycloak_get_jwks_cached(monkeypatch) -> None:
    kc = KeycloakOIDC("https://jwks", "https://issuer", "portal")
    calls = {"count": 0}

    class DummyClient:
        def __enter__(self):
            return self

        def __exit__(self, exc_type, exc, tb):
            return False

        def get(self, url):
            calls["count"] += 1
            return type("Resp", (), {"raise_for_status": lambda self: None, "json": lambda self: {"keys": []}})()

    monkeypatch.setattr("ariadne.auth.keycloak.httpx.Client", lambda *args, **kwargs: DummyClient())

    kc._get_jwks(force=True)
    kc._get_jwks(force=False)
    assert calls["count"] == 1