/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { vi, describe, it, expect, beforeEach } from 'vitest';
import { mcpCommand } from './mcpCommand.js';
import { createMockCommandContext } from '../../test-utils/mockCommandContext.js';
import { MCPServerStatus, MCPDiscoveryState, getMCPServerStatus, getMCPDiscoveryState, DiscoveredMCPTool, } from '@google/gemini-cli-core';
import { MessageType } from '../types.js';
vi.mock('@google/gemini-cli-core', async (importOriginal) => {
    const actual = await importOriginal();
    const mockAuthenticate = vi.fn();
    return {
        ...actual,
        getMCPServerStatus: vi.fn(),
        getMCPDiscoveryState: vi.fn(),
        MCPOAuthProvider: vi.fn(() => ({
            authenticate: mockAuthenticate,
        })),
        MCPOAuthTokenStorage: vi.fn(() => ({
            getToken: vi.fn(),
            isTokenExpired: vi.fn(),
        })),
    };
});
const mockMessageBus = {
    publish: vi.fn(),
    subscribe: vi.fn(),
    unsubscribe: vi.fn(),
};
// Helper function to create a mock DiscoveredMCPTool
const createMockMCPTool = (name, serverName, description) => new DiscoveredMCPTool({
    callTool: vi.fn(),
    tool: vi.fn(),
}, serverName, name, description || 'Mock tool description', { type: 'object', properties: {} }, mockMessageBus, undefined, // trust
undefined, // isReadOnly
undefined, // nameOverride
undefined, // cliConfig
undefined, // extensionName
undefined);
describe('mcpCommand', () => {
    let mockContext;
    let mockConfig;
    beforeEach(() => {
        vi.clearAllMocks();
        // Set up default mock environment
        vi.unstubAllEnvs();
        // Default mock implementations
        vi.mocked(getMCPServerStatus).mockReturnValue(MCPServerStatus.CONNECTED);
        vi.mocked(getMCPDiscoveryState).mockReturnValue(MCPDiscoveryState.COMPLETED);
        // Create mock config with all necessary methods
        mockConfig = {
            getToolRegistry: vi.fn().mockReturnValue({
                getAllTools: vi.fn().mockReturnValue([]),
            }),
            getMcpServers: vi.fn().mockReturnValue({}),
            getBlockedMcpServers: vi.fn().mockReturnValue([]),
            getPromptRegistry: vi.fn().mockReturnValue({
                getAllPrompts: vi.fn().mockReturnValue([]),
                getPromptsByServer: vi.fn().mockReturnValue([]),
            }),
            getGeminiClient: vi.fn(),
            getMcpClientManager: vi.fn().mockImplementation(() => ({
                getBlockedMcpServers: vi.fn(),
                getMcpServers: vi.fn(),
            })),
            getResourceRegistry: vi.fn().mockReturnValue({
                getAllResources: vi.fn().mockReturnValue([]),
            }),
        };
        mockContext = createMockCommandContext({
            services: {
                config: mockConfig,
            },
        });
    });
    describe('basic functionality', () => {
        it('should show an error if config is not available', async () => {
            const contextWithoutConfig = createMockCommandContext({
                services: {
                    config: null,
                },
            });
            const result = await mcpCommand.action(contextWithoutConfig, '');
            expect(result).toEqual({
                type: 'message',
                messageType: 'error',
                content: 'Config not loaded.',
            });
        });
        it('should show an error if tool registry is not available', async () => {
            mockConfig.getToolRegistry = vi.fn().mockReturnValue(undefined);
            const result = await mcpCommand.action(mockContext, '');
            expect(result).toEqual({
                type: 'message',
                messageType: 'error',
                content: 'Could not retrieve tool registry.',
            });
        });
    });
    describe('with configured MCP servers', () => {
        beforeEach(() => {
            const mockMcpServers = {
                server1: { command: 'cmd1' },
                server2: { command: 'cmd2' },
                server3: { command: 'cmd3' },
            };
            mockConfig.getMcpServers = vi.fn().mockReturnValue(mockMcpServers);
            mockConfig.getMcpClientManager = vi.fn().mockReturnValue({
                getMcpServers: vi.fn().mockReturnValue(mockMcpServers),
                getBlockedMcpServers: vi.fn().mockReturnValue([]),
            });
        });
        it('should display configured MCP servers with status indicators and their tools', async () => {
            // Setup getMCPServerStatus mock implementation
            vi.mocked(getMCPServerStatus).mockImplementation((serverName) => {
                if (serverName === 'server1')
                    return MCPServerStatus.CONNECTED;
                if (serverName === 'server2')
                    return MCPServerStatus.CONNECTED;
                return MCPServerStatus.DISCONNECTED; // server3
            });
            // Mock tools from each server using actual DiscoveredMCPTool instances
            const mockServer1Tools = [
                createMockMCPTool('server1_tool1', 'server1'),
                createMockMCPTool('server1_tool2', 'server1'),
            ];
            const mockServer2Tools = [createMockMCPTool('server2_tool1', 'server2')];
            const mockServer3Tools = [createMockMCPTool('server3_tool1', 'server3')];
            const allTools = [
                ...mockServer1Tools,
                ...mockServer2Tools,
                ...mockServer3Tools,
            ];
            mockConfig.getToolRegistry = vi.fn().mockReturnValue({
                getAllTools: vi.fn().mockReturnValue(allTools),
            });
            const resourcesByServer = {
                server1: [
                    {
                        name: 'Server1 Resource',
                        uri: 'file:///server1/resource1.txt',
                    },
                ],
                server2: [],
                server3: [],
            };
            mockConfig.getResourceRegistry = vi.fn().mockReturnValue({
                getAllResources: vi.fn().mockReturnValue(Object.entries(resourcesByServer).flatMap(([serverName, resources]) => resources.map((entry) => ({
                    serverName,
                    ...entry,
                })))),
            });
            await mcpCommand.action(mockContext, '');
            expect(mockContext.ui.addItem).toHaveBeenCalledWith(expect.objectContaining({
                type: MessageType.MCP_STATUS,
                tools: allTools.map((tool) => ({
                    serverName: tool.serverName,
                    name: tool.name,
                    description: tool.description,
                    schema: tool.schema,
                })),
                resources: expect.arrayContaining([
                    expect.objectContaining({
                        serverName: 'server1',
                        uri: 'file:///server1/resource1.txt',
                    }),
                ]),
            }));
        });
        it('should display tool descriptions when desc argument is used', async () => {
            const descSubCommand = mcpCommand.subCommands.find((c) => c.name === 'desc');
            await descSubCommand.action(mockContext, '');
            expect(mockContext.ui.addItem).toHaveBeenCalledWith(expect.objectContaining({
                type: MessageType.MCP_STATUS,
                showDescriptions: true,
            }));
        });
        it('should not display descriptions when nodesc argument is used', async () => {
            const listSubCommand = mcpCommand.subCommands.find((c) => c.name === 'list');
            await listSubCommand.action(mockContext, '');
            expect(mockContext.ui.addItem).toHaveBeenCalledWith(expect.objectContaining({
                type: MessageType.MCP_STATUS,
                showDescriptions: false,
            }));
        });
    });
});
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