"""
用户登录 Use Case 测试
"""

from datetime import datetime, timezone
from unittest.mock import Mock

import pytest

from packages.application.auth import (
    LoginRequest,
    LoginUseCase,
    LogoutRequest,
    LogoutUseCase,
)
from packages.domain.auth import password_hasher
from packages.domain.entities import User


class TestLoginUseCase:
    """登录用例测试"""

    @pytest.fixture
    def mock_user_repo(self):
        repo = Mock()
        repo.find_by_email = Mock(return_value=None)
        repo.save = Mock()
        return repo

    @pytest.fixture
    def use_case(self, mock_user_repo):
        session_store = Mock()
        session_store.save_session.return_value = True
        return LoginUseCase(user_repository=mock_user_repo, session_store=session_store)

    @pytest.fixture
    def test_user(self):
        """创建测试用户"""
        password_hash = password_hasher.hash_password("SecurePass123")
        return User(
            id="user-123",
            email="test@example.com",
            username="testuser",
            display_name="Test User",
            password_hash=password_hash,
            email_verified=True,
        )

    def test_login_success(self, use_case, mock_user_repo, test_user):
        """测试登录成功"""
        mock_user_repo.find_by_email.return_value = test_user

        request = LoginRequest(
            email="test@example.com",
            password="SecurePass123",
            device_info="Chrome/Windows",
            ip_address="192.168.1.1",
        )

        response, error = use_case.execute(request)

        assert error is None
        assert response is not None
        assert response.user_id == "user-123"
        assert response.email == "test@example.com"
        assert response.username == "testuser"
        assert response.access_token != ""
        assert response.refresh_token != ""
        assert response.expires_in > 0

        # 验证保存了 session
        use_case.session_store.save_session.assert_called_once()

        # 验证更新了最后登录信息
        mock_user_repo.save.assert_called_once()

    def test_login_invalid_email(self, use_case, mock_user_repo):
        """测试邮箱不存在"""
        mock_user_repo.find_by_email.return_value = None

        request = LoginRequest(
            email="nonexistent@example.com",
            password="SecurePass123",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Invalid email or password"

    def test_login_wrong_password(self, use_case, mock_user_repo, test_user):
        """测试密码错误"""
        mock_user_repo.find_by_email.return_value = test_user

        request = LoginRequest(
            email="test@example.com",
            password="WrongPassword123",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Invalid email or password"

    def test_login_missing_email(self, use_case):
        """测试缺少邮箱"""
        request = LoginRequest(
            email="",
            password="SecurePass123",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Email is required"

    def test_login_missing_password(self, use_case, mock_user_repo, test_user):
        """测试缺少密码"""
        mock_user_repo.find_by_email.return_value = test_user

        request = LoginRequest(
            email="test@example.com",
            password="",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Password is required"


class TestLogoutUseCase:
    """登出用例测试"""

    @pytest.fixture
    def use_case(self):
        session_store = Mock()
        return LogoutUseCase(session_store=session_store)

    def test_logout_current_device(self, use_case):
        """测试登出当前设备"""
        use_case.session_store.delete_session.return_value = True

        request = LogoutRequest(
            user_id="user-123",
            session_id="session-abc",
            logout_all_devices=False,
        )

        success, error = use_case.execute(request)

        assert success is True
        assert error is None

        use_case.session_store.delete_session.assert_called_once_with("session-abc")

    def test_logout_all_devices(self, use_case):
        """测试登出所有设备"""
        use_case.session_store.delete_all_user_sessions.return_value = 3

        request = LogoutRequest(
            user_id="user-123",
            logout_all_devices=True,
        )

        success, error = use_case.execute(request)

        assert success is True
        assert error is None

        use_case.session_store.delete_all_user_sessions.assert_called_once_with("user-123")

    def test_logout_session_not_found(self, use_case):
        """测试 session 不存在"""
        use_case.session_store.delete_session.return_value = False

        request = LogoutRequest(
            user_id="user-123",
            session_id="nonexistent",
            logout_all_devices=False,
        )

        success, error = use_case.execute(request)

        assert success is False
        assert error == "Session not found"

    def test_logout_missing_session_id(self, use_case):
        """测试缺少 session_id"""
        request = LogoutRequest(
            user_id="user-123",
            session_id=None,
            logout_all_devices=False,
        )

        success, error = use_case.execute(request)

        assert success is False
        assert error == "Session ID is required"