"""
Subscription 管理 Use Case 测试
"""

from unittest.mock import Mock

import pytest

from packages.application.workspace.subscription_use_case import (
    CancelSubscriptionRequest,
    CancelSubscriptionUseCase,
    UpgradeSubscriptionRequest,
    UpgradeSubscriptionUseCase,
)
from packages.domain.entities import Workspace, WorkspaceMember, WorkspaceMemberRole


class TestUpgradeSubscriptionUseCase:
    """升级订阅测试"""

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

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

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

    def test_upgrade_from_free_to_pro(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
    ):
        """测试从 Free 升级到 Pro"""
        workspace = Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
            subscription_plan="free",
        )
        mock_workspace_repo.find_by_id.return_value = workspace

        owner_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="owner-id",
            role=WorkspaceMemberRole.OWNER,
        )
        mock_member_repo.find_by_workspace_and_user.return_value = owner_member

        request = UpgradeSubscriptionRequest(
            workspace_id="workspace-123",
            requester_user_id="owner-id",
            new_plan="pro",
        )

        response, error = use_case.execute(request)

        assert error is None
        assert response is not None
        assert response.old_plan == "free"
        assert response.new_plan == "pro"
        assert response.max_projects == 999999
        assert response.max_storage_gb == 100

        # 验证更新了 workspace
        assert workspace.subscription_plan == "pro"
        assert workspace.max_projects == 999999
        assert workspace.subscription_expires_at is not None

    def test_upgrade_from_pro_to_enterprise(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
    ):
        """测试从 Pro 升级到 Enterprise"""
        workspace = Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
            subscription_plan="pro",
            max_projects=999999,
            max_storage_gb=100,
        )
        mock_workspace_repo.find_by_id.return_value = workspace

        owner_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="owner-id",
            role=WorkspaceMemberRole.OWNER,
        )
        mock_member_repo.find_by_workspace_and_user.return_value = owner_member

        request = UpgradeSubscriptionRequest(
            workspace_id="workspace-123",
            requester_user_id="owner-id",
            new_plan="enterprise",
        )

        response, error = use_case.execute(request)

        assert error is None
        assert response is not None
        assert response.old_plan == "pro"
        assert response.new_plan == "enterprise"
        assert response.max_storage_gb == 1000

    def test_upgrade_cannot_downgrade(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
    ):
        """测试不能降级"""
        workspace = Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
            subscription_plan="pro",
        )
        mock_workspace_repo.find_by_id.return_value = workspace

        owner_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="owner-id",
            role=WorkspaceMemberRole.OWNER,
        )
        mock_member_repo.find_by_workspace_and_user.return_value = owner_member

        request = UpgradeSubscriptionRequest(
            workspace_id="workspace-123",
            requester_user_id="owner-id",
            new_plan="free",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert "Cannot downgrade" in error

    def test_upgrade_already_on_plan(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
    ):
        """测试已经是该计划"""
        workspace = Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
            subscription_plan="pro",
        )
        mock_workspace_repo.find_by_id.return_value = workspace

        owner_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="owner-id",
            role=WorkspaceMemberRole.OWNER,
        )
        mock_member_repo.find_by_workspace_and_user.return_value = owner_member

        request = UpgradeSubscriptionRequest(
            workspace_id="workspace-123",
            requester_user_id="owner-id",
            new_plan="pro",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert "already on pro plan" in error

    def test_upgrade_only_owner_can_upgrade(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
    ):
        """测试只有 Owner 可以升级"""
        workspace = Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
            subscription_plan="free",
        )
        mock_workspace_repo.find_by_id.return_value = workspace

        admin_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 = admin_member

        request = UpgradeSubscriptionRequest(
            workspace_id="workspace-123",
            requester_user_id="admin-id",
            new_plan="pro",
        )

        response, error = use_case.execute(request)

        assert response is None
        assert "Only workspace owner" in error


class TestCancelSubscriptionUseCase:
    """取消订阅测试"""

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

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

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

    def test_cancel_subscription_success(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
    ):
        """测试取消订阅成功"""
        workspace = Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
            subscription_plan="pro",
            max_projects=999999,
            max_storage_gb=100,
        )
        mock_workspace_repo.find_by_id.return_value = workspace

        owner_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="owner-id",
            role=WorkspaceMemberRole.OWNER,
        )
        mock_member_repo.find_by_workspace_and_user.return_value = owner_member

        request = CancelSubscriptionRequest(
            workspace_id="workspace-123",
            requester_user_id="owner-id",
        )

        success, error = use_case.execute(request)

        assert success is True
        assert error is None

        # 验证降级到 free
        assert workspace.subscription_plan == "free"
        assert workspace.max_projects == 3
        assert workspace.max_storage_gb == 10
        assert workspace.subscription_expires_at is None

    def test_cancel_already_free(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
    ):
        """测试已经是免费计划"""
        workspace = Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
            subscription_plan="free",
        )
        mock_workspace_repo.find_by_id.return_value = workspace

        owner_member = WorkspaceMember(
            id="member-1",
            workspace_id="workspace-123",
            user_id="owner-id",
            role=WorkspaceMemberRole.OWNER,
        )
        mock_member_repo.find_by_workspace_and_user.return_value = owner_member

        request = CancelSubscriptionRequest(
            workspace_id="workspace-123",
            requester_user_id="owner-id",
        )

        success, error = use_case.execute(request)

        assert success is False
        assert "already on free plan" in error

    def test_cancel_only_owner_can_cancel(
        self,
        use_case,
        mock_workspace_repo,
        mock_member_repo,
    ):
        """测试只有 Owner 可以取消"""
        workspace = Workspace(
            id="workspace-123",
            name="Test Workspace",
            owner_user_id="owner-id",
            subscription_plan="pro",
        )
        mock_workspace_repo.find_by_id.return_value = workspace

        admin_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 = admin_member

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

        success, error = use_case.execute(request)

        assert success is False
        assert "Only workspace owner" in error