"""
接受/拒绝邀请 Use Case 测试
"""

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

import pytest

from packages.application.workspace.accept_invitation_use_case import (
    AcceptInvitationRequest,
    AcceptInvitationUseCase,
    DeclineInvitationRequest,
    DeclineInvitationUseCase,
)
from packages.domain.entities import (
    InvitationStatus,
    User,
    Workspace,
    WorkspaceInvitation,
    WorkspaceMember,
)


class TestAcceptInvitationUseCase:
    """接受邀请测试"""

    @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.save = Mock()
        return repo

    @pytest.fixture
    def mock_invitation_repo(self):
        repo = Mock()
        repo.find_by_token = Mock(return_value=None)
        repo.save = Mock()
        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_invitation_repo,
        mock_user_repo,
    ):
        return AcceptInvitationUseCase(
            workspace_repository=mock_workspace_repo,
            workspace_member_repository=mock_member_repo,
            workspace_invitation_repository=mock_invitation_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",
        )

    @pytest.fixture
    def test_user(self):
        return User(
            id="user-123",
            email="invitee@test.com",
            username="invitee",
            display_name="Invitee User",
        )

    @pytest.fixture
    def valid_invitation(self):
        return WorkspaceInvitation(
            id="invitation-1",
            workspace_id="workspace-123",
            inviter_user_id="inviter-id",
            invitee_email="invitee@test.com",
            role="member",
            invitation_token="valid-token",
            status=InvitationStatus.PENDING,
            expires_at=datetime.now(timezone.utc) + timedelta(days=7),
        )

    def test_accept_invitation_success(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
        mock_invitation_repo,
        mock_user_repo,
        test_workspace,
        test_user,
        valid_invitation,
    ):
        """测试接受邀请成功"""
        mock_invitation_repo.find_by_token.return_value = valid_invitation
        mock_user_repo.find_by_id.return_value = test_user
        mock_workspace_repo.find_by_id.return_value = test_workspace
        mock_member_repo.find_by_workspace_and_user.return_value = None

        request = AcceptInvitationRequest(
            invitation_token="valid-token",
            user_id="user-123",
        )

        response, error = use_case.execute(request)

        assert error is None
        assert response is not None
        assert response.workspace_id == "workspace-123"
        assert response.workspace_name == "Test Workspace"
        assert response.role == "member"

        # 验证创建了成员记录
        mock_member_repo.save.assert_called_once()
        member = mock_member_repo.save.call_args[0][0]
        assert member.user_id == "user-123"
        assert member.role == "member"
        assert member.invited_by == "inviter-id"

        # 验证更新了邀请状态
        assert valid_invitation.status == InvitationStatus.ACCEPTED
        assert valid_invitation.accepted_at is not None

    def test_accept_invitation_success_with_naive_database_datetime(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
        mock_invitation_repo,
        mock_user_repo,
        test_workspace,
        test_user,
        valid_invitation,
    ):
        """测试数据库返回 naive datetime 时仍可接受邀请"""
        valid_invitation.expires_at = (datetime.now(timezone.utc) + timedelta(days=7)).replace(tzinfo=None)
        mock_invitation_repo.find_by_token.return_value = valid_invitation
        mock_user_repo.find_by_id.return_value = test_user
        mock_workspace_repo.find_by_id.return_value = test_workspace
        mock_member_repo.find_by_workspace_and_user.return_value = None

        response, error = use_case.execute(AcceptInvitationRequest(invitation_token="valid-token", user_id="user-123"))

        assert error is None
        assert response is not None
        assert response.workspace_id == "workspace-123"

    def test_accept_invitation_invalid_token(self, use_case, mock_invitation_repo):
        """测试无效令牌"""
        mock_invitation_repo.find_by_token.return_value = None

        request = AcceptInvitationRequest(
            invitation_token="invalid-token",
            user_id="user-123",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Invalid invitation token"

    def test_accept_invitation_already_accepted(
        self,
        use_case,
        mock_invitation_repo,
        valid_invitation,
    ):
        """测试邀请已被接受"""
        valid_invitation.status = InvitationStatus.ACCEPTED
        mock_invitation_repo.find_by_token.return_value = valid_invitation

        request = AcceptInvitationRequest(
            invitation_token="valid-token",
            user_id="user-123",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Invitation has already been accepted"

    def test_accept_invitation_expired(
        self,
        use_case,
        mock_invitation_repo,
        valid_invitation,
    ):
        """测试邀请已过期"""
        valid_invitation.expires_at = datetime.now(timezone.utc) - timedelta(days=1)
        mock_invitation_repo.find_by_token.return_value = valid_invitation

        request = AcceptInvitationRequest(
            invitation_token="valid-token",
            user_id="user-123",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "Invitation has expired"
        assert valid_invitation.status == InvitationStatus.EXPIRED

    def test_accept_invitation_email_mismatch(
        self,
        use_case,
        mock_invitation_repo,
        mock_user_repo,
        valid_invitation,
    ):
        """测试邮箱不匹配"""
        mock_invitation_repo.find_by_token.return_value = valid_invitation

        different_user = User(
            id="user-123",
            email="different@test.com",
            username="different",
            display_name="Different User",
        )
        mock_user_repo.find_by_id.return_value = different_user

        request = AcceptInvitationRequest(
            invitation_token="valid-token",
            user_id="user-123",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert error == "This invitation is for a different email address"

    def test_accept_invitation_already_member(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
        mock_invitation_repo,
        mock_user_repo,
        test_workspace,
        test_user,
        valid_invitation,
    ):
        """测试用户已经是成员"""
        mock_invitation_repo.find_by_token.return_value = valid_invitation
        mock_user_repo.find_by_id.return_value = test_user
        mock_workspace_repo.find_by_id.return_value = test_workspace

        existing_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="user-123",
            role="admin",
        )
        mock_member_repo.find_by_workspace_and_user.return_value = existing_member

        request = AcceptInvitationRequest(
            invitation_token="valid-token",
            user_id="user-123",
        )

        response, error = use_case.execute(request)

        assert error is None
        assert response is not None
        assert response.role == "admin"  # 返回现有角色

        # 不创建新成员记录
        mock_member_repo.save.assert_not_called()

        # 但仍标记邀请为已接受
        assert valid_invitation.status == InvitationStatus.ACCEPTED


class TestDeclineInvitationUseCase:
    """拒绝邀请测试"""

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

    @pytest.fixture
    def use_case(self, mock_invitation_repo):
        return DeclineInvitationUseCase(
            workspace_invitation_repository=mock_invitation_repo,
        )

    @pytest.fixture
    def valid_invitation(self):
        return WorkspaceInvitation(
            id="invitation-1",
            workspace_id="workspace-123",
            inviter_user_id="inviter-id",
            invitee_email="invitee@test.com",
            role="member",
            invitation_token="valid-token",
            status=InvitationStatus.PENDING,
            expires_at=datetime.now(timezone.utc) + timedelta(days=7),
        )

    def test_decline_invitation_success(self, use_case, mock_invitation_repo, valid_invitation):
        """测试拒绝邀请成功"""
        mock_invitation_repo.find_by_token.return_value = valid_invitation

        request = DeclineInvitationRequest(invitation_token="valid-token")
        success, error = use_case.execute(request)

        assert success is True
        assert error is None
        assert valid_invitation.status == InvitationStatus.DECLINED

    def test_decline_invitation_invalid_token(self, use_case, mock_invitation_repo):
        """测试无效令牌"""
        mock_invitation_repo.find_by_token.return_value = None

        request = DeclineInvitationRequest(invitation_token="invalid-token")
        success, error = use_case.execute(request)

        assert success is False
        assert error == "Invalid invitation token"

    def test_decline_invitation_already_accepted(self, use_case, mock_invitation_repo, valid_invitation):
        """测试邀请已被接受"""
        valid_invitation.status = InvitationStatus.ACCEPTED
        mock_invitation_repo.find_by_token.return_value = valid_invitation

        request = DeclineInvitationRequest(invitation_token="valid-token")
        success, error = use_case.execute(request)

        assert success is False
        assert error == "Invitation has already been accepted"