"""
获取成员列表 Use Case 测试
"""

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

import pytest

from packages.application.workspace.list_members_use_case import (
    ListMembersRequest,
    ListMembersUseCase,
)
from packages.domain.entities import (
    User,
    Workspace,
    WorkspaceMember,
    WorkspaceMemberRole,
)


class TestListMembersUseCase:
    """获取成员列表测试"""

    @pytest.fixture
    def mock_workspace_repo(self):
        repo = Mock()
        repo.find_by_id = Mock(return_value=None)
        return repo

    @pytest.fixture
    def mock_member_repo(self):
        repo = Mock()
        repo.find_by_workspace_and_user = Mock(return_value=None)
        repo.find_by_workspace = Mock(return_value=[])
        return repo

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

    @pytest.fixture
    def use_case(self, mock_workspace_repo, mock_member_repo, mock_user_repo):
        return ListMembersUseCase(
            workspace_repository=mock_workspace_repo,
            workspace_member_repository=mock_member_repo,
            user_repository=mock_user_repo,
        )

    @pytest.fixture
    def test_workspace(self):
        return Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
        )

    def test_list_members_success(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
        mock_user_repo,
        test_workspace,
    ):
        """测试获取成员列表成功"""
        mock_workspace_repo.find_by_id.return_value = test_workspace

        # 请求者是 Admin
        requester_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="admin-id",
            role=WorkspaceMemberRole.ADMIN,
        )
        mock_member_repo.find_by_workspace_and_user.return_value = requester_member

        # 3 个成员
        member1 = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="owner-id",
            role=WorkspaceMemberRole.OWNER,
            invited_by=None,
        )

        member2 = WorkspaceMember(
            id="member-2",
            workspace_id="workspace-123",
            user_id="admin-id",
            role=WorkspaceMemberRole.ADMIN,
            invited_by="owner-id",
        )

        member3 = WorkspaceMember(
            id="member-3",
            workspace_id="workspace-123",
            user_id="user-id",
            role=WorkspaceMemberRole.MEMBER,
            invited_by="admin-id",
        )

        mock_member_repo.find_by_workspace.return_value = [member1, member2, member3]

        # 用户信息
        user1 = User(
            id="owner-id",
            email="owner@test.com",
            username="owner",
            display_name="Owner User",
        )

        user2 = User(
            id="admin-id",
            email="admin@test.com",
            username="admin",
            display_name="Admin User",
        )

        user3 = User(
            id="user-id",
            email="user@test.com",
            username="user",
            display_name="Regular User",
        )

        mock_user_repo.find_by_id.side_effect = [user1, user2, user3]

        request = ListMembersRequest(
            workspace_id="workspace-123",
            requester_user_id="admin-id",
        )

        response, error = use_case.execute(request)

        assert error is None
        assert response is not None
        assert len(response.members) == 3

        # 验证第一个成员（Owner）
        m1 = response.members[0]
        assert m1.user_id == "owner-id"
        assert m1.username == "owner"
        assert m1.email == "owner@test.com"
        assert m1.role == "owner"
        assert m1.invited_by is None

        # 验证第二个成员（Admin）
        m2 = response.members[1]
        assert m2.user_id == "admin-id"
        assert m2.role == "admin"
        assert m2.invited_by == "owner-id"

        # 验证第三个成员（Member）
        m3 = response.members[2]
        assert m3.user_id == "user-id"
        assert m3.role == "member"
        assert m3.invited_by == "admin-id"

    def test_list_members_workspace_not_found(
        self,
        use_case,
        mock_workspace_repo,
    ):
        """测试工作空间不存在"""
        mock_workspace_repo.find_by_id.return_value = None

        request = ListMembersRequest(
            workspace_id="nonexistent",
            requester_user_id="user-id",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Workspace not found"

    def test_list_members_requester_not_member(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
        test_workspace,
    ):
        """测试请求者不是成员"""
        mock_workspace_repo.find_by_id.return_value = test_workspace
        mock_member_repo.find_by_workspace_and_user.return_value = None

        request = ListMembersRequest(
            workspace_id="workspace-123",
            requester_user_id="outsider-id",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "You are not a member of this workspace"

    def test_list_members_empty_workspace(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
        test_workspace,
    ):
        """测试空工作空间（理论上不应该发生）"""
        mock_workspace_repo.find_by_id.return_value = test_workspace

        requester_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="user-id",
            role=WorkspaceMemberRole.MEMBER,
        )
        mock_member_repo.find_by_workspace_and_user.return_value = requester_member
        mock_member_repo.find_by_workspace.return_value = []

        request = ListMembersRequest(
            workspace_id="workspace-123",
            requester_user_id="user-id",
        )

        response, error = use_case.execute(request)

        assert error is None
        assert response is not None
        assert len(response.members) == 0

    def test_list_members_missing_workspace_id(self, use_case):
        """测试缺少工作空间 ID"""
        request = ListMembersRequest(
            workspace_id="",
            requester_user_id="user-id",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Workspace ID is required"

    def test_list_members_missing_requester_id(self, use_case):
        """测试缺少请求者 ID"""
        request = ListMembersRequest(
            workspace_id="workspace-123",
            requester_user_id="",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Requester user ID is required"