from __future__ import annotations

import sys
import types
from datetime import datetime, timezone
from types import SimpleNamespace
from typing import Any

import pytest

from src.services.provider import auth as module


class _FakeQuery:
    def __init__(self, row: Any | None) -> None:
        self._row = row

    def filter(self, *_args: Any, **_kwargs: Any) -> "_FakeQuery":
        return self

    def first(self) -> Any | None:
        return self._row


class _FakeDB:
    def __init__(self, row: Any | None) -> None:
        self.row = row
        self.committed = False

    def query(self, _model: Any) -> _FakeQuery:
        return _FakeQuery(self.row)

    def commit(self) -> None:
        self.committed = True


class _FakeSessionCtx:
    def __init__(self, db: _FakeDB) -> None:
        self.db = db

    def __enter__(self) -> _FakeDB:
        return self.db

    def __exit__(self, exc_type: Any, exc: Any, tb: Any) -> bool:
        _ = exc_type, exc, tb
        return False


def _install_module(monkeypatch: pytest.MonkeyPatch, name: str, attrs: dict[str, Any]) -> None:
    fake_module = types.ModuleType(name)
    for key, value in attrs.items():
        setattr(fake_module, key, value)
    monkeypatch.setitem(sys.modules, name, fake_module)


def test_persist_refreshed_token_detached_key_does_not_raise(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    key = SimpleNamespace(
        id="key-1",
        api_key="old-api",
        auth_config="old-config",
        oauth_invalid_at=datetime.now(timezone.utc),
        oauth_invalid_reason="[REFRESH_FAILED] stale",
    )

    monkeypatch.setattr(
        module, "object_session", lambda _key: (_ for _ in ()).throw(RuntimeError())
    )
    monkeypatch.setattr(module.crypto_service, "encrypt", lambda value: f"enc:{value}")

    module._persist_refreshed_token(key, "new-token", {"refresh_token": "rt-2"})

    assert key.api_key == "enc:new-token"
    assert key.auth_config == 'enc:{"refresh_token": "rt-2"}'
    assert key.oauth_invalid_at is None
    assert key.oauth_invalid_reason is None


def test_mark_refresh_token_invalid_persists_detached_key(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    key = SimpleNamespace(id="key-1")
    row = SimpleNamespace(id="key-1", oauth_invalid_at=None, oauth_invalid_reason=None)
    fake_db = _FakeDB(row)

    monkeypatch.setattr(
        module, "object_session", lambda _key: (_ for _ in ()).throw(RuntimeError())
    )
    _install_module(
        monkeypatch, "src.database", {"create_session": lambda: _FakeSessionCtx(fake_db)}
    )
    _install_module(
        monkeypatch,
        "src.models.database",
        {"ProviderAPIKey": type("ProviderAPIKey", (), {"id": "id"})},
    )

    module._mark_refresh_token_invalid(
        key,
        401,
        '{"error": {"code": "refresh_token_reused", "message": "used"}}',
    )

    assert fake_db.committed is True
    assert key.oauth_invalid_at is not None
    assert row.oauth_invalid_at is not None
    assert str(key.oauth_invalid_reason).startswith("[REFRESH_FAILED] Token 续期失败 (401)")
    assert "refresh_token_reused" in str(row.oauth_invalid_reason)


def test_account_block_token_invalidated_is_refresh_recoverable() -> None:
    from src.services.provider.oauth_token import is_account_level_block

    assert (
        is_account_level_block(
            "[ACCOUNT_BLOCK] Authentication token has been invalidated. Please sign in again."
        )
        is False
    )


def test_persist_refreshed_token_clears_legacy_token_invalidated_account_block(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    key = SimpleNamespace(
        id="key-1",
        api_key="old-api",
        auth_config="old-config",
        oauth_invalid_at=datetime.now(timezone.utc),
        oauth_invalid_reason=(
            "[ACCOUNT_BLOCK] Authentication token has been invalidated. Please sign in again."
        ),
    )

    monkeypatch.setattr(
        module, "object_session", lambda _key: (_ for _ in ()).throw(RuntimeError())
    )
    monkeypatch.setattr(module.crypto_service, "encrypt", lambda value: f"enc:{value}")

    module._persist_refreshed_token(key, "new-token", {"refresh_token": "rt-2"})

    assert key.api_key == "enc:new-token"
    assert key.auth_config == 'enc:{"refresh_token": "rt-2"}'
    assert key.oauth_invalid_at is None
    assert key.oauth_invalid_reason is None