/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
/// <reference types="vitest/globals" />
// Mock 'os' first.
import * as osActual from 'node:os'; // Import for type info for the mock factory
vi.mock('os', async (importOriginal) => {
    const actualOs = await importOriginal();
    return {
        ...actualOs,
        homedir: vi.fn(() => '/mock/home/user'),
        platform: vi.fn(() => 'linux'),
    };
});
// Mock './settings.js' to ensure it uses the mocked 'os.homedir()' for its internal constants.
vi.mock('./settings.js', async (importActual) => {
    const originalModule = await importActual();
    return {
        __esModule: true, // Ensure correct module shape
        ...originalModule, // Re-export all original members
        // We are relying on originalModule's USER_SETTINGS_PATH being constructed with mocked os.homedir()
    };
});
// Mock trustedFolders
vi.mock('./trustedFolders.js', () => ({
    isWorkspaceTrusted: vi
        .fn()
        .mockReturnValue({ isTrusted: true, source: 'file' }),
}));
// NOW import everything else, including the (now effectively re-exported) settings.js
import path, * as pathActual from 'node:path'; // Restored for MOCK_WORKSPACE_SETTINGS_PATH
import { describe, it, expect, vi, beforeEach, afterEach, } from 'vitest';
import * as fs from 'node:fs'; // fs will be mocked separately
import stripJsonComments from 'strip-json-comments'; // Will be mocked separately
import { isWorkspaceTrusted } from './trustedFolders.js';
// These imports will get the versions from the vi.mock('./settings.js', ...) factory.
import { loadSettings, USER_SETTINGS_PATH, // This IS the mocked path.
getSystemSettingsPath, getSystemDefaultsPath, migrateSettingsToV1, needsMigration, loadEnvironment, migrateDeprecatedSettings, SettingScope, saveSettings, } from './settings.js';
import { FatalConfigError, GEMINI_DIR } from '@google/gemini-cli-core';
import { ExtensionManager } from './extension-manager.js';
import { updateSettingsFilePreservingFormat } from '../utils/commentJson.js';
const MOCK_WORKSPACE_DIR = '/mock/workspace';
// Use the (mocked) GEMINI_DIR for consistency
const MOCK_WORKSPACE_SETTINGS_PATH = pathActual.join(MOCK_WORKSPACE_DIR, GEMINI_DIR, 'settings.json');
vi.mock('fs', async (importOriginal) => {
    // Get all the functions from the real 'fs' module
    const actualFs = await importOriginal();
    return {
        ...actualFs, // Keep all the real functions
        // Now, just override the ones we need for the test
        existsSync: vi.fn(),
        readFileSync: vi.fn(),
        writeFileSync: vi.fn(),
        mkdirSync: vi.fn(),
        realpathSync: (p) => p,
    };
});
vi.mock('./extension.js');
const mockCoreEvents = vi.hoisted(() => ({
    emitFeedback: vi.fn(),
}));
vi.mock('@google/gemini-cli-core', async (importOriginal) => {
    const actual = await importOriginal();
    return {
        ...actual,
        coreEvents: mockCoreEvents,
    };
});
vi.mock('../utils/commentJson.js', () => ({
    updateSettingsFilePreservingFormat: vi.fn(),
}));
vi.mock('strip-json-comments', () => ({
    default: vi.fn((content) => content),
}));
describe('Settings Loading and Merging', () => {
    let mockFsExistsSync;
    let mockStripJsonComments;
    let mockFsMkdirSync;
    beforeEach(() => {
        vi.resetAllMocks();
        mockFsExistsSync = vi.mocked(fs.existsSync);
        mockFsMkdirSync = vi.mocked(fs.mkdirSync);
        mockStripJsonComments = vi.mocked(stripJsonComments);
        vi.mocked(osActual.homedir).mockReturnValue('/mock/home/user');
        mockStripJsonComments.mockImplementation((jsonString) => jsonString);
        mockFsExistsSync.mockReturnValue(false);
        fs.readFileSync.mockReturnValue('{}'); // Return valid empty JSON
        mockFsMkdirSync.mockImplementation(() => undefined);
        vi.mocked(isWorkspaceTrusted).mockReturnValue({
            isTrusted: true,
            source: 'file',
        });
    });
    afterEach(() => {
        vi.restoreAllMocks();
    });
    describe('loadSettings', () => {
        it('should load empty settings if no files exist', () => {
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.system.settings).toEqual({});
            expect(settings.user.settings).toEqual({});
            expect(settings.workspace.settings).toEqual({});
            expect(settings.merged).toEqual({});
        });
        it('should load system settings if only system file exists', () => {
            mockFsExistsSync.mockImplementation((p) => p === getSystemSettingsPath());
            const systemSettingsContent = {
                ui: {
                    theme: 'system-default',
                },
                tools: {
                    sandbox: false,
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(fs.readFileSync).toHaveBeenCalledWith(getSystemSettingsPath(), 'utf-8');
            expect(settings.system.settings).toEqual(systemSettingsContent);
            expect(settings.user.settings).toEqual({});
            expect(settings.workspace.settings).toEqual({});
            expect(settings.merged).toEqual({
                ...systemSettingsContent,
            });
        });
        it('should load user settings if only user file exists', () => {
            const expectedUserSettingsPath = USER_SETTINGS_PATH; // Use the path actually resolved by the (mocked) module
            mockFsExistsSync.mockImplementation((p) => p === expectedUserSettingsPath);
            const userSettingsContent = {
                ui: {
                    theme: 'dark',
                },
                context: {
                    fileName: 'USER_CONTEXT.md',
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === expectedUserSettingsPath)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(fs.readFileSync).toHaveBeenCalledWith(expectedUserSettingsPath, 'utf-8');
            expect(settings.user.settings).toEqual(userSettingsContent);
            expect(settings.workspace.settings).toEqual({});
            expect(settings.merged).toEqual({
                ...userSettingsContent,
            });
        });
        it('should load workspace settings if only workspace file exists', () => {
            mockFsExistsSync.mockImplementation((p) => p === MOCK_WORKSPACE_SETTINGS_PATH);
            const workspaceSettingsContent = {
                tools: {
                    sandbox: true,
                },
                context: {
                    fileName: 'WORKSPACE_CONTEXT.md',
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(fs.readFileSync).toHaveBeenCalledWith(MOCK_WORKSPACE_SETTINGS_PATH, 'utf-8');
            expect(settings.user.settings).toEqual({});
            expect(settings.workspace.settings).toEqual(workspaceSettingsContent);
            expect(settings.merged).toEqual({
                ...workspaceSettingsContent,
            });
        });
        it('should merge system, user and workspace settings, with system taking precedence over workspace, and workspace over user', () => {
            mockFsExistsSync.mockImplementation((p) => p === getSystemSettingsPath() ||
                p === USER_SETTINGS_PATH ||
                p === MOCK_WORKSPACE_SETTINGS_PATH);
            const systemSettingsContent = {
                ui: {
                    theme: 'system-theme',
                },
                tools: {
                    sandbox: false,
                },
                mcp: {
                    allowed: ['server1', 'server2'],
                },
                telemetry: { enabled: false },
            };
            const userSettingsContent = {
                ui: {
                    theme: 'dark',
                },
                tools: {
                    sandbox: true,
                },
                context: {
                    fileName: 'USER_CONTEXT.md',
                },
            };
            const workspaceSettingsContent = {
                tools: {
                    sandbox: false,
                    core: ['tool1'],
                },
                context: {
                    fileName: 'WORKSPACE_CONTEXT.md',
                },
                mcp: {
                    allowed: ['server1', 'server2', 'server3'],
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.system.settings).toEqual(systemSettingsContent);
            expect(settings.user.settings).toEqual(userSettingsContent);
            expect(settings.workspace.settings).toEqual(workspaceSettingsContent);
            expect(settings.merged).toEqual({
                ui: {
                    theme: 'system-theme',
                },
                tools: {
                    sandbox: false,
                    core: ['tool1'],
                },
                telemetry: { enabled: false },
                context: {
                    fileName: 'WORKSPACE_CONTEXT.md',
                },
                mcp: {
                    allowed: ['server1', 'server2'],
                },
            });
        });
        it('should correctly migrate a complex legacy (v1) settings file', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            const legacySettingsContent = {
                theme: 'legacy-dark',
                vimMode: true,
                contextFileName: 'LEGACY_CONTEXT.md',
                model: 'gemini-pro',
                mcpServers: {
                    'legacy-server-1': {
                        command: 'npm',
                        args: ['run', 'start:server1'],
                        description: 'Legacy Server 1',
                    },
                    'legacy-server-2': {
                        command: 'node',
                        args: ['server2.js'],
                        description: 'Legacy Server 2',
                    },
                },
                allowMCPServers: ['legacy-server-1'],
                someUnrecognizedSetting: 'should-be-preserved',
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(legacySettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged).toEqual({
                ui: {
                    theme: 'legacy-dark',
                },
                general: {
                    vimMode: true,
                },
                context: {
                    fileName: 'LEGACY_CONTEXT.md',
                },
                model: {
                    name: 'gemini-pro',
                },
                mcpServers: {
                    'legacy-server-1': {
                        command: 'npm',
                        args: ['run', 'start:server1'],
                        description: 'Legacy Server 1',
                    },
                    'legacy-server-2': {
                        command: 'node',
                        args: ['server2.js'],
                        description: 'Legacy Server 2',
                    },
                },
                mcp: {
                    allowed: ['legacy-server-1'],
                },
                someUnrecognizedSetting: 'should-be-preserved',
            });
        });
        it('should rewrite allowedTools to tools.allowed during migration', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            const legacySettingsContent = {
                allowedTools: ['fs', 'shell'],
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(legacySettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.tools?.allowed).toEqual(['fs', 'shell']);
            expect(settings.merged['allowedTools']).toBeUndefined();
        });
        it('should correctly merge and migrate legacy array properties from multiple scopes', () => {
            mockFsExistsSync.mockReturnValue(true);
            const legacyUserSettings = {
                includeDirectories: ['/user/dir'],
                excludeTools: ['user-tool'],
                excludedProjectEnvVars: ['USER_VAR'],
            };
            const legacyWorkspaceSettings = {
                includeDirectories: ['/workspace/dir'],
                excludeTools: ['workspace-tool'],
                excludedProjectEnvVars: ['WORKSPACE_VAR', 'USER_VAR'],
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(legacyUserSettings);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(legacyWorkspaceSettings);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            // Verify includeDirectories are concatenated
            expect(settings.merged.context?.includeDirectories).toEqual([
                '/user/dir',
                '/workspace/dir',
            ]);
            // Verify excludeTools are concatenated and de-duped
            expect(settings.merged.tools?.exclude).toEqual([
                'user-tool',
                'workspace-tool',
            ]);
            // Verify excludedProjectEnvVars are concatenated and de-duped
            expect(settings.merged.advanced?.excludedEnvVars).toEqual(expect.arrayContaining(['USER_VAR', 'WORKSPACE_VAR']));
            expect(settings.merged.advanced?.excludedEnvVars).toHaveLength(2);
        });
        it('should merge all settings files with the correct precedence', () => {
            mockFsExistsSync.mockReturnValue(true);
            const systemDefaultsContent = {
                ui: {
                    theme: 'default-theme',
                },
                tools: {
                    sandbox: true,
                },
                telemetry: true,
                context: {
                    includeDirectories: ['/system/defaults/dir'],
                },
            };
            const userSettingsContent = {
                ui: {
                    theme: 'user-theme',
                },
                context: {
                    fileName: 'USER_CONTEXT.md',
                    includeDirectories: ['/user/dir1', '/user/dir2'],
                },
            };
            const workspaceSettingsContent = {
                tools: {
                    sandbox: false,
                },
                context: {
                    fileName: 'WORKSPACE_CONTEXT.md',
                    includeDirectories: ['/workspace/dir'],
                },
            };
            const systemSettingsContent = {
                ui: {
                    theme: 'system-theme',
                },
                telemetry: false,
                context: {
                    includeDirectories: ['/system/dir'],
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemDefaultsPath())
                    return JSON.stringify(systemDefaultsContent);
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.systemDefaults.settings).toEqual(systemDefaultsContent);
            expect(settings.system.settings).toEqual(systemSettingsContent);
            expect(settings.user.settings).toEqual(userSettingsContent);
            expect(settings.workspace.settings).toEqual(workspaceSettingsContent);
            expect(settings.merged).toEqual({
                context: {
                    fileName: 'WORKSPACE_CONTEXT.md',
                    includeDirectories: [
                        '/system/defaults/dir',
                        '/user/dir1',
                        '/user/dir2',
                        '/workspace/dir',
                        '/system/dir',
                    ],
                },
                telemetry: false,
                tools: {
                    sandbox: false,
                },
                ui: {
                    theme: 'system-theme',
                },
            });
        });
        it('should use folderTrust from workspace settings when trusted', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                security: {
                    folderTrust: {
                        enabled: true,
                    },
                },
            };
            const workspaceSettingsContent = {
                security: {
                    folderTrust: {
                        enabled: false, // This should be used
                    },
                },
            };
            const systemSettingsContent = {
            // No folderTrust here
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.security?.folderTrust?.enabled).toBe(false); // Workspace setting should be used
        });
        it('should use system folderTrust over user setting', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                security: {
                    folderTrust: {
                        enabled: false,
                    },
                },
            };
            const workspaceSettingsContent = {
                security: {
                    folderTrust: {
                        enabled: true, // This should be ignored
                    },
                },
            };
            const systemSettingsContent = {
                security: {
                    folderTrust: {
                        enabled: true,
                    },
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.security?.folderTrust?.enabled).toBe(true); // System setting should be used
        });
        it('should not allow user or workspace to override system disableYoloMode', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                security: {
                    disableYoloMode: false,
                },
            };
            const workspaceSettingsContent = {
                security: {
                    disableYoloMode: false, // This should be ignored
                },
            };
            const systemSettingsContent = {
                security: {
                    disableYoloMode: true,
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.security?.disableYoloMode).toBe(true); // System setting should be used
        });
        it('should handle contextFileName correctly when only in user settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            const userSettingsContent = { context: { fileName: 'CUSTOM.md' } };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.context?.fileName).toBe('CUSTOM.md');
        });
        it('should handle contextFileName correctly when only in workspace settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === MOCK_WORKSPACE_SETTINGS_PATH);
            const workspaceSettingsContent = {
                context: { fileName: 'PROJECT_SPECIFIC.md' },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.context?.fileName).toBe('PROJECT_SPECIFIC.md');
        });
        it('should handle excludedProjectEnvVars correctly when only in user settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            const userSettingsContent = {
                general: {},
                advanced: { excludedEnvVars: ['DEBUG', 'NODE_ENV', 'CUSTOM_VAR'] },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.advanced?.excludedEnvVars).toEqual([
                'DEBUG',
                'NODE_ENV',
                'CUSTOM_VAR',
            ]);
        });
        it('should handle excludedProjectEnvVars correctly when only in workspace settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === MOCK_WORKSPACE_SETTINGS_PATH);
            const workspaceSettingsContent = {
                general: {},
                advanced: { excludedEnvVars: ['WORKSPACE_DEBUG', 'WORKSPACE_VAR'] },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.advanced?.excludedEnvVars).toEqual([
                'WORKSPACE_DEBUG',
                'WORKSPACE_VAR',
            ]);
        });
        it('should merge excludedProjectEnvVars with workspace taking precedence over user', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH || p === MOCK_WORKSPACE_SETTINGS_PATH);
            const userSettingsContent = {
                general: {},
                advanced: { excludedEnvVars: ['DEBUG', 'NODE_ENV', 'USER_VAR'] },
            };
            const workspaceSettingsContent = {
                general: {},
                advanced: { excludedEnvVars: ['WORKSPACE_DEBUG', 'WORKSPACE_VAR'] },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings.advanced?.excludedEnvVars).toEqual([
                'DEBUG',
                'NODE_ENV',
                'USER_VAR',
            ]);
            expect(settings.workspace.settings.advanced?.excludedEnvVars).toEqual([
                'WORKSPACE_DEBUG',
                'WORKSPACE_VAR',
            ]);
            expect(settings.merged.advanced?.excludedEnvVars).toEqual([
                'DEBUG',
                'NODE_ENV',
                'USER_VAR',
                'WORKSPACE_DEBUG',
                'WORKSPACE_VAR',
            ]);
        });
        it('should default contextFileName to undefined if not in any settings file', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH || p === MOCK_WORKSPACE_SETTINGS_PATH);
            const userSettingsContent = { ui: { theme: 'dark' } };
            const workspaceSettingsContent = { tools: { sandbox: true } };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.context?.fileName).toBeUndefined();
        });
        it('should load telemetry setting from user settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            const userSettingsContent = { telemetry: { enabled: true } };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.telemetry?.enabled).toBe(true);
        });
        it('should load telemetry setting from workspace settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === MOCK_WORKSPACE_SETTINGS_PATH);
            const workspaceSettingsContent = { telemetry: { enabled: false } };
            fs.readFileSync.mockImplementation((p) => {
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.telemetry?.enabled).toBe(false);
        });
        it('should prioritize workspace telemetry setting over user setting', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = { telemetry: { enabled: true } };
            const workspaceSettingsContent = { telemetry: { enabled: false } };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.telemetry?.enabled).toBe(false);
        });
        it('should have telemetry as undefined if not in any settings file', () => {
            mockFsExistsSync.mockReturnValue(false); // No settings files exist
            fs.readFileSync.mockReturnValue('{}');
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.telemetry).toBeUndefined();
            expect(settings.merged.ui).toBeUndefined();
            expect(settings.merged.mcpServers).toBeUndefined();
        });
        it('should merge MCP servers correctly, with workspace taking precedence', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH || p === MOCK_WORKSPACE_SETTINGS_PATH);
            const userSettingsContent = {
                mcpServers: {
                    'user-server': {
                        command: 'user-command',
                        args: ['--user-arg'],
                        description: 'User MCP server',
                    },
                    'shared-server': {
                        command: 'user-shared-command',
                        description: 'User shared server config',
                    },
                },
            };
            const workspaceSettingsContent = {
                mcpServers: {
                    'workspace-server': {
                        command: 'workspace-command',
                        args: ['--workspace-arg'],
                        description: 'Workspace MCP server',
                    },
                    'shared-server': {
                        command: 'workspace-shared-command',
                        description: 'Workspace shared server config',
                    },
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings).toEqual(userSettingsContent);
            expect(settings.workspace.settings).toEqual(workspaceSettingsContent);
            expect(settings.merged.mcpServers).toEqual({
                'user-server': {
                    command: 'user-command',
                    args: ['--user-arg'],
                    description: 'User MCP server',
                },
                'workspace-server': {
                    command: 'workspace-command',
                    args: ['--workspace-arg'],
                    description: 'Workspace MCP server',
                },
                'shared-server': {
                    command: 'workspace-shared-command',
                    description: 'Workspace shared server config',
                },
            });
        });
        it('should handle MCP servers when only in user settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            const userSettingsContent = {
                mcpServers: {
                    'user-only-server': {
                        command: 'user-only-command',
                        description: 'User only server',
                    },
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.mcpServers).toEqual({
                'user-only-server': {
                    command: 'user-only-command',
                    description: 'User only server',
                },
            });
        });
        it('should handle MCP servers when only in workspace settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === MOCK_WORKSPACE_SETTINGS_PATH);
            const workspaceSettingsContent = {
                mcpServers: {
                    'workspace-only-server': {
                        command: 'workspace-only-command',
                        description: 'Workspace only server',
                    },
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.mcpServers).toEqual({
                'workspace-only-server': {
                    command: 'workspace-only-command',
                    description: 'Workspace only server',
                },
            });
        });
        it('should have mcpServers as undefined if not in any settings file', () => {
            mockFsExistsSync.mockReturnValue(false); // No settings files exist
            fs.readFileSync.mockReturnValue('{}');
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.mcpServers).toBeUndefined();
        });
        it('should merge MCP servers from system, user, and workspace with system taking precedence', () => {
            mockFsExistsSync.mockReturnValue(true);
            const systemSettingsContent = {
                mcpServers: {
                    'shared-server': {
                        command: 'system-command',
                        args: ['--system-arg'],
                    },
                    'system-only-server': {
                        command: 'system-only-command',
                    },
                },
            };
            const userSettingsContent = {
                mcpServers: {
                    'user-server': {
                        command: 'user-command',
                    },
                    'shared-server': {
                        command: 'user-command',
                        description: 'from user',
                    },
                },
            };
            const workspaceSettingsContent = {
                mcpServers: {
                    'workspace-server': {
                        command: 'workspace-command',
                    },
                    'shared-server': {
                        command: 'workspace-command',
                        args: ['--workspace-arg'],
                    },
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.mcpServers).toEqual({
                'user-server': {
                    command: 'user-command',
                },
                'workspace-server': {
                    command: 'workspace-command',
                },
                'system-only-server': {
                    command: 'system-only-command',
                },
                'shared-server': {
                    command: 'system-command',
                    args: ['--system-arg'],
                },
            });
        });
        it('should merge mcp allowed/excluded lists with system taking precedence over workspace', () => {
            mockFsExistsSync.mockReturnValue(true);
            const systemSettingsContent = {
                mcp: {
                    allowed: ['system-allowed'],
                },
            };
            const userSettingsContent = {
                mcp: {
                    allowed: ['user-allowed'],
                    excluded: ['user-excluded'],
                },
            };
            const workspaceSettingsContent = {
                mcp: {
                    allowed: ['workspace-allowed'],
                    excluded: ['workspace-excluded'],
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.mcp).toEqual({
                allowed: ['system-allowed'],
                excluded: ['workspace-excluded'],
            });
        });
        it('should merge compressionThreshold settings, with workspace taking precedence', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                general: {},
                model: { compressionThreshold: 0.5 },
            };
            const workspaceSettingsContent = {
                general: {},
                model: { compressionThreshold: 0.8 },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings.model?.compressionThreshold).toEqual(0.5);
            expect(settings.workspace.settings.model?.compressionThreshold).toEqual(0.8);
            expect(settings.merged.model?.compressionThreshold).toEqual(0.8);
        });
        it('should merge output format settings, with workspace taking precedence', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                output: { format: 'text' },
            };
            const workspaceSettingsContent = {
                output: { format: 'json' },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.output?.format).toBe('json');
        });
        it('should handle compressionThreshold when only in user settings', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            const userSettingsContent = {
                general: {},
                model: { compressionThreshold: 0.5 },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.model?.compressionThreshold).toEqual(0.5);
        });
        it('should have model as undefined if not in any settings file', () => {
            mockFsExistsSync.mockReturnValue(false); // No settings files exist
            fs.readFileSync.mockReturnValue('{}');
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.model).toBeUndefined();
        });
        it('should use user compressionThreshold if workspace does not define it', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                general: {},
                model: { compressionThreshold: 0.5 },
            };
            const workspaceSettingsContent = {
                general: {},
                model: {},
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.model?.compressionThreshold).toEqual(0.5);
        });
        it('should merge includeDirectories from all scopes', () => {
            mockFsExistsSync.mockReturnValue(true);
            const systemSettingsContent = {
                context: { includeDirectories: ['/system/dir'] },
            };
            const systemDefaultsContent = {
                context: { includeDirectories: ['/system/defaults/dir'] },
            };
            const userSettingsContent = {
                context: { includeDirectories: ['/user/dir1', '/user/dir2'] },
            };
            const workspaceSettingsContent = {
                context: { includeDirectories: ['/workspace/dir'] },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath())
                    return JSON.stringify(systemSettingsContent);
                if (p === getSystemDefaultsPath())
                    return JSON.stringify(systemDefaultsContent);
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.context?.includeDirectories).toEqual([
                '/system/defaults/dir',
                '/user/dir1',
                '/user/dir2',
                '/workspace/dir',
                '/system/dir',
            ]);
        });
        it('should handle JSON parsing errors gracefully', () => {
            mockFsExistsSync.mockReturnValue(true); // Both files "exist"
            const invalidJsonContent = 'invalid json';
            const userReadError = new SyntaxError("Expected ',' or '}' after property value in JSON at position 10");
            const workspaceReadError = new SyntaxError('Unexpected token i in JSON at position 0');
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH) {
                    // Simulate JSON.parse throwing for user settings
                    vi.spyOn(JSON, 'parse').mockImplementationOnce(() => {
                        throw userReadError;
                    });
                    return invalidJsonContent; // Content that would cause JSON.parse to throw
                }
                if (p === MOCK_WORKSPACE_SETTINGS_PATH) {
                    // Simulate JSON.parse throwing for workspace settings
                    vi.spyOn(JSON, 'parse').mockImplementationOnce(() => {
                        throw workspaceReadError;
                    });
                    return invalidJsonContent;
                }
                return '{}'; // Default for other reads
            });
            try {
                loadSettings(MOCK_WORKSPACE_DIR);
                throw new Error('loadSettings should have thrown a FatalConfigError');
            }
            catch (e) {
                expect(e).toBeInstanceOf(FatalConfigError);
                const error = e;
                expect(error.message).toContain(`Error in ${USER_SETTINGS_PATH}: ${userReadError.message}`);
                expect(error.message).toContain(`Error in ${MOCK_WORKSPACE_SETTINGS_PATH}: ${workspaceReadError.message}`);
                expect(error.message).toContain('Please fix the configuration file(s) and try again.');
            }
            // Restore JSON.parse mock if it was spied on specifically for this test
            vi.restoreAllMocks(); // Or more targeted restore if needed
        });
        it('should resolve environment variables in user settings', () => {
            process.env['TEST_API_KEY'] = 'user_api_key_from_env';
            const userSettingsContent = {
                apiKey: '$TEST_API_KEY',
                someUrl: 'https://test.com/${TEST_API_KEY}',
            };
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings['apiKey']).toBe('user_api_key_from_env');
            expect(settings.user.settings['someUrl']).toBe('https://test.com/user_api_key_from_env');
            expect(settings.merged['apiKey']).toBe('user_api_key_from_env');
            delete process.env['TEST_API_KEY'];
        });
        it('should resolve environment variables in workspace settings', () => {
            process.env['WORKSPACE_ENDPOINT'] = 'workspace_endpoint_from_env';
            const workspaceSettingsContent = {
                endpoint: '${WORKSPACE_ENDPOINT}/api',
                nested: { value: '$WORKSPACE_ENDPOINT' },
            };
            mockFsExistsSync.mockImplementation((p) => p === MOCK_WORKSPACE_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.workspace.settings['endpoint']).toBe('workspace_endpoint_from_env/api');
            const nested = settings.workspace.settings['nested'];
            expect(nested['value']).toBe('workspace_endpoint_from_env');
            expect(settings.merged['endpoint']).toBe('workspace_endpoint_from_env/api');
            delete process.env['WORKSPACE_ENDPOINT'];
        });
        it('should correctly resolve and merge env variables from different scopes', () => {
            process.env['SYSTEM_VAR'] = 'system_value';
            process.env['USER_VAR'] = 'user_value';
            process.env['WORKSPACE_VAR'] = 'workspace_value';
            process.env['SHARED_VAR'] = 'final_value';
            const systemSettingsContent = {
                configValue: '$SHARED_VAR',
                systemOnly: '$SYSTEM_VAR',
            };
            const userSettingsContent = {
                configValue: '$SHARED_VAR',
                userOnly: '$USER_VAR',
                ui: {
                    theme: 'dark',
                },
            };
            const workspaceSettingsContent = {
                configValue: '$SHARED_VAR',
                workspaceOnly: '$WORKSPACE_VAR',
                ui: {
                    theme: 'light',
                },
            };
            mockFsExistsSync.mockReturnValue(true);
            fs.readFileSync.mockImplementation((p) => {
                if (p === getSystemSettingsPath()) {
                    return JSON.stringify(systemSettingsContent);
                }
                if (p === USER_SETTINGS_PATH) {
                    return JSON.stringify(userSettingsContent);
                }
                if (p === MOCK_WORKSPACE_SETTINGS_PATH) {
                    return JSON.stringify(workspaceSettingsContent);
                }
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            // Check resolved values in individual scopes
            expect(settings.system.settings['configValue']).toBe('final_value');
            expect(settings.system.settings['systemOnly']).toBe('system_value');
            expect(settings.user.settings['configValue']).toBe('final_value');
            expect(settings.user.settings['userOnly']).toBe('user_value');
            expect(settings.workspace.settings['configValue']).toBe('final_value');
            expect(settings.workspace.settings['workspaceOnly']).toBe('workspace_value');
            // Check merged values (system > workspace > user)
            expect(settings.merged['configValue']).toBe('final_value');
            expect(settings.merged['systemOnly']).toBe('system_value');
            expect(settings.merged['userOnly']).toBe('user_value');
            expect(settings.merged['workspaceOnly']).toBe('workspace_value');
            expect(settings.merged.ui?.theme).toBe('light'); // workspace overrides user
            delete process.env['SYSTEM_VAR'];
            delete process.env['USER_VAR'];
            delete process.env['WORKSPACE_VAR'];
            delete process.env['SHARED_VAR'];
        });
        it('should correctly merge dnsResolutionOrder with workspace taking precedence', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                advanced: { dnsResolutionOrder: 'ipv4first' },
            };
            const workspaceSettingsContent = {
                advanced: { dnsResolutionOrder: 'verbatim' },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.advanced?.dnsResolutionOrder).toBe('verbatim');
        });
        it('should use user dnsResolutionOrder if workspace is not defined', () => {
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            const userSettingsContent = {
                advanced: { dnsResolutionOrder: 'verbatim' },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.advanced?.dnsResolutionOrder).toBe('verbatim');
        });
        it('should leave unresolved environment variables as is', () => {
            const userSettingsContent = { apiKey: '$UNDEFINED_VAR' };
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings['apiKey']).toBe('$UNDEFINED_VAR');
            expect(settings.merged['apiKey']).toBe('$UNDEFINED_VAR');
        });
        it('should resolve multiple environment variables in a single string', () => {
            process.env['VAR_A'] = 'valueA';
            process.env['VAR_B'] = 'valueB';
            const userSettingsContent = {
                path: '/path/$VAR_A/${VAR_B}/end',
            };
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings['path']).toBe('/path/valueA/valueB/end');
            delete process.env['VAR_A'];
            delete process.env['VAR_B'];
        });
        it('should resolve environment variables in arrays', () => {
            process.env['ITEM_1'] = 'item1_env';
            process.env['ITEM_2'] = 'item2_env';
            const userSettingsContent = {
                list: ['$ITEM_1', '${ITEM_2}', 'literal'],
            };
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings['list']).toEqual([
                'item1_env',
                'item2_env',
                'literal',
            ]);
            delete process.env['ITEM_1'];
            delete process.env['ITEM_2'];
        });
        it('should correctly pass through null, boolean, and number types, and handle undefined properties', () => {
            process.env['MY_ENV_STRING'] = 'env_string_value';
            process.env['MY_ENV_STRING_NESTED'] = 'env_string_nested_value';
            const userSettingsContent = {
                nullVal: null,
                trueVal: true,
                falseVal: false,
                numberVal: 123.45,
                stringVal: '$MY_ENV_STRING',
                nestedObj: {
                    nestedNull: null,
                    nestedBool: true,
                    nestedNum: 0,
                    nestedString: 'literal',
                    anotherEnv: '${MY_ENV_STRING_NESTED}',
                },
            };
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings['nullVal']).toBeNull();
            expect(settings.user.settings['trueVal']).toBe(true);
            expect(settings.user.settings['falseVal']).toBe(false);
            expect(settings.user.settings['numberVal']).toBe(123.45);
            expect(settings.user.settings['stringVal']).toBe('env_string_value');
            expect(settings.user.settings['undefinedVal']).toBeUndefined();
            const nestedObj = settings.user.settings['nestedObj'];
            expect(nestedObj['nestedNull']).toBeNull();
            expect(nestedObj['nestedBool']).toBe(true);
            expect(nestedObj['nestedNum']).toBe(0);
            expect(nestedObj['nestedString']).toBe('literal');
            expect(nestedObj['anotherEnv']).toBe('env_string_nested_value');
            delete process.env['MY_ENV_STRING'];
            delete process.env['MY_ENV_STRING_NESTED'];
        });
        it('should resolve multiple concatenated environment variables in a single string value', () => {
            process.env['TEST_HOST'] = 'myhost';
            process.env['TEST_PORT'] = '9090';
            const userSettingsContent = {
                serverAddress: '${TEST_HOST}:${TEST_PORT}/api',
            };
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings['serverAddress']).toBe('myhost:9090/api');
            delete process.env['TEST_HOST'];
            delete process.env['TEST_PORT'];
        });
        describe('when GEMINI_CLI_SYSTEM_SETTINGS_PATH is set', () => {
            const MOCK_ENV_SYSTEM_SETTINGS_PATH = '/mock/env/system/settings.json';
            beforeEach(() => {
                process.env['GEMINI_CLI_SYSTEM_SETTINGS_PATH'] =
                    MOCK_ENV_SYSTEM_SETTINGS_PATH;
            });
            afterEach(() => {
                delete process.env['GEMINI_CLI_SYSTEM_SETTINGS_PATH'];
            });
            it('should load system settings from the path specified in the environment variable', () => {
                mockFsExistsSync.mockImplementation((p) => p === MOCK_ENV_SYSTEM_SETTINGS_PATH);
                const systemSettingsContent = {
                    ui: { theme: 'env-var-theme' },
                    tools: { sandbox: true },
                };
                fs.readFileSync.mockImplementation((p) => {
                    if (p === MOCK_ENV_SYSTEM_SETTINGS_PATH)
                        return JSON.stringify(systemSettingsContent);
                    return '{}';
                });
                const settings = loadSettings(MOCK_WORKSPACE_DIR);
                expect(fs.readFileSync).toHaveBeenCalledWith(MOCK_ENV_SYSTEM_SETTINGS_PATH, 'utf-8');
                expect(settings.system.path).toBe(MOCK_ENV_SYSTEM_SETTINGS_PATH);
                expect(settings.system.settings).toEqual(systemSettingsContent);
                expect(settings.merged).toEqual({
                    ...systemSettingsContent,
                });
            });
        });
    });
    describe('excludedProjectEnvVars integration', () => {
        const originalEnv = { ...process.env };
        beforeEach(() => {
            process.env = { ...originalEnv };
        });
        afterEach(() => {
            process.env = originalEnv;
        });
        it('should exclude DEBUG and DEBUG_MODE from project .env files by default', () => {
            // Create a workspace settings file with excludedProjectEnvVars
            const workspaceSettingsContent = {
                general: {},
                advanced: { excludedEnvVars: ['DEBUG', 'DEBUG_MODE'] },
            };
            mockFsExistsSync.mockImplementation((p) => p === MOCK_WORKSPACE_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            // Mock findEnvFile to return a project .env file
            const originalFindEnvFile = loadSettings.findEnvFile;
            loadSettings.findEnvFile =
                () => '/mock/project/.env';
            // Mock fs.readFileSync for .env file content
            const originalReadFileSync = fs.readFileSync;
            fs.readFileSync.mockImplementation((p) => {
                if (p === '/mock/project/.env') {
                    return 'DEBUG=true\nDEBUG_MODE=1\nGEMINI_API_KEY=test-key';
                }
                if (p === MOCK_WORKSPACE_SETTINGS_PATH) {
                    return JSON.stringify(workspaceSettingsContent);
                }
                return '{}';
            });
            try {
                // This will call loadEnvironment internally with the merged settings
                const settings = loadSettings(MOCK_WORKSPACE_DIR);
                // Verify the settings were loaded correctly
                expect(settings.merged.advanced?.excludedEnvVars).toEqual([
                    'DEBUG',
                    'DEBUG_MODE',
                ]);
                // Note: We can't directly test process.env changes here because the mocking
                // prevents the actual file system operations, but we can verify the settings
                // are correctly merged and passed to loadEnvironment
            }
            finally {
                loadSettings.findEnvFile =
                    originalFindEnvFile;
                fs.readFileSync.mockImplementation(originalReadFileSync);
            }
        });
        it('should respect custom excludedProjectEnvVars from user settings', () => {
            const userSettingsContent = {
                general: {},
                advanced: { excludedEnvVars: ['NODE_ENV', 'DEBUG'] },
            };
            mockFsExistsSync.mockImplementation((p) => p === USER_SETTINGS_PATH);
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings.advanced?.excludedEnvVars).toEqual([
                'NODE_ENV',
                'DEBUG',
            ]);
            expect(settings.merged.advanced?.excludedEnvVars).toEqual([
                'NODE_ENV',
                'DEBUG',
            ]);
        });
        it('should merge excludedProjectEnvVars with workspace taking precedence', () => {
            const userSettingsContent = {
                general: {},
                advanced: { excludedEnvVars: ['DEBUG', 'NODE_ENV', 'USER_VAR'] },
            };
            const workspaceSettingsContent = {
                general: {},
                advanced: { excludedEnvVars: ['WORKSPACE_DEBUG', 'WORKSPACE_VAR'] },
            };
            mockFsExistsSync.mockReturnValue(true);
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.user.settings.advanced?.excludedEnvVars).toEqual([
                'DEBUG',
                'NODE_ENV',
                'USER_VAR',
            ]);
            expect(settings.workspace.settings.advanced?.excludedEnvVars).toEqual([
                'WORKSPACE_DEBUG',
                'WORKSPACE_VAR',
            ]);
            expect(settings.merged.advanced?.excludedEnvVars).toEqual([
                'DEBUG',
                'NODE_ENV',
                'USER_VAR',
                'WORKSPACE_DEBUG',
                'WORKSPACE_VAR',
            ]);
        });
    });
    describe('with workspace trust', () => {
        it('should merge workspace settings when workspace is trusted', () => {
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                ui: { theme: 'dark' },
                tools: { sandbox: false },
            };
            const workspaceSettingsContent = {
                tools: { sandbox: true },
                context: { fileName: 'WORKSPACE.md' },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.tools?.sandbox).toBe(true);
            expect(settings.merged.context?.fileName).toBe('WORKSPACE.md');
            expect(settings.merged.ui?.theme).toBe('dark');
        });
        it('should NOT merge workspace settings when workspace is not trusted', () => {
            vi.mocked(isWorkspaceTrusted).mockReturnValue({
                isTrusted: false,
                source: 'file',
            });
            mockFsExistsSync.mockReturnValue(true);
            const userSettingsContent = {
                ui: { theme: 'dark' },
                tools: { sandbox: false },
                context: { fileName: 'USER.md' },
            };
            const workspaceSettingsContent = {
                tools: { sandbox: true },
                context: { fileName: 'WORKSPACE.md' },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const settings = loadSettings(MOCK_WORKSPACE_DIR);
            expect(settings.merged.tools?.sandbox).toBe(false); // User setting
            expect(settings.merged.context?.fileName).toBe('USER.md'); // User setting
            expect(settings.merged.ui?.theme).toBe('dark'); // User setting
        });
    });
    describe('migrateSettingsToV1', () => {
        it('should handle an empty object', () => {
            const v2Settings = {};
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({});
        });
        it('should migrate a simple v2 settings object to v1', () => {
            const v2Settings = {
                general: {
                    preferredEditor: 'vscode',
                    vimMode: true,
                },
                ui: {
                    theme: 'dark',
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                preferredEditor: 'vscode',
                vimMode: true,
                theme: 'dark',
            });
        });
        it('should handle nested properties correctly', () => {
            const v2Settings = {
                security: {
                    folderTrust: {
                        enabled: true,
                    },
                    auth: {
                        selectedType: 'oauth',
                    },
                },
                advanced: {
                    autoConfigureMemory: true,
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                folderTrust: true,
                selectedAuthType: 'oauth',
                autoConfigureMaxOldSpaceSize: true,
            });
        });
        it('should preserve mcpServers at the top level', () => {
            const v2Settings = {
                general: {
                    preferredEditor: 'vscode',
                },
                mcpServers: {
                    'my-server': {
                        command: 'npm start',
                    },
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                preferredEditor: 'vscode',
                mcpServers: {
                    'my-server': {
                        command: 'npm start',
                    },
                },
            });
        });
        it('should carry over unrecognized top-level properties', () => {
            const v2Settings = {
                general: {
                    vimMode: false,
                },
                unrecognized: 'value',
                another: {
                    nested: true,
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                vimMode: false,
                unrecognized: 'value',
                another: {
                    nested: true,
                },
            });
        });
        it('should handle a complex object with mixed properties', () => {
            const v2Settings = {
                general: {
                    disableAutoUpdate: true,
                },
                ui: {
                    hideBanner: true,
                    customThemes: {
                        myTheme: {},
                    },
                },
                model: {
                    name: 'gemini-pro',
                },
                mcpServers: {
                    'server-1': {
                        command: 'node server.js',
                    },
                },
                unrecognized: {
                    should: 'be-preserved',
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                disableAutoUpdate: true,
                hideBanner: true,
                customThemes: {
                    myTheme: {},
                },
                model: 'gemini-pro',
                mcpServers: {
                    'server-1': {
                        command: 'node server.js',
                    },
                },
                unrecognized: {
                    should: 'be-preserved',
                },
            });
        });
        it('should not migrate a v1 settings object', () => {
            const v1Settings = {
                preferredEditor: 'vscode',
                vimMode: true,
                theme: 'dark',
            };
            const migratedSettings = migrateSettingsToV1(v1Settings);
            expect(migratedSettings).toEqual({
                preferredEditor: 'vscode',
                vimMode: true,
                theme: 'dark',
            });
        });
        it('should migrate a full v2 settings object to v1', () => {
            const v2Settings = {
                general: {
                    preferredEditor: 'code',
                    vimMode: true,
                },
                ui: {
                    theme: 'dark',
                },
                privacy: {
                    usageStatisticsEnabled: false,
                },
                model: {
                    name: 'gemini-pro',
                },
                context: {
                    fileName: 'CONTEXT.md',
                    includeDirectories: ['/src'],
                },
                tools: {
                    sandbox: true,
                    exclude: ['toolA'],
                },
                mcp: {
                    allowed: ['server1'],
                },
                security: {
                    folderTrust: {
                        enabled: true,
                    },
                },
                advanced: {
                    dnsResolutionOrder: 'ipv4first',
                    excludedEnvVars: ['SECRET'],
                },
                mcpServers: {
                    'my-server': {
                        command: 'npm start',
                    },
                },
                unrecognizedTopLevel: {
                    value: 'should be preserved',
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                preferredEditor: 'code',
                vimMode: true,
                theme: 'dark',
                usageStatisticsEnabled: false,
                model: 'gemini-pro',
                contextFileName: 'CONTEXT.md',
                includeDirectories: ['/src'],
                sandbox: true,
                excludeTools: ['toolA'],
                allowMCPServers: ['server1'],
                folderTrust: true,
                dnsResolutionOrder: 'ipv4first',
                excludedProjectEnvVars: ['SECRET'],
                mcpServers: {
                    'my-server': {
                        command: 'npm start',
                    },
                },
                unrecognizedTopLevel: {
                    value: 'should be preserved',
                },
            });
        });
        it('should handle partial v2 settings', () => {
            const v2Settings = {
                general: {
                    vimMode: false,
                },
                ui: {},
                model: {
                    name: 'gemini-2.5-pro',
                },
                unrecognized: 'value',
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                vimMode: false,
                model: 'gemini-2.5-pro',
                unrecognized: 'value',
            });
        });
        it('should handle settings with different data types', () => {
            const v2Settings = {
                general: {
                    vimMode: false,
                },
                model: {
                    maxSessionTurns: -1,
                },
                context: {
                    includeDirectories: [],
                },
                security: {
                    folderTrust: {
                        enabled: undefined,
                    },
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                vimMode: false,
                maxSessionTurns: -1,
                includeDirectories: [],
                security: {
                    folderTrust: {
                        enabled: undefined,
                    },
                },
            });
        });
        it('should preserve unrecognized top-level keys', () => {
            const v2Settings = {
                general: {
                    vimMode: true,
                },
                customTopLevel: {
                    a: 1,
                    b: [2],
                },
                anotherOne: 'hello',
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                vimMode: true,
                customTopLevel: {
                    a: 1,
                    b: [2],
                },
                anotherOne: 'hello',
            });
        });
        it('should handle an empty v2 settings object', () => {
            const v2Settings = {};
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({});
        });
        it('should correctly handle mcpServers at the top level', () => {
            const v2Settings = {
                mcpServers: {
                    serverA: { command: 'a' },
                },
                mcp: {
                    allowed: ['serverA'],
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                mcpServers: {
                    serverA: { command: 'a' },
                },
                allowMCPServers: ['serverA'],
            });
        });
        it('should correctly migrate customWittyPhrases', () => {
            const v2Settings = {
                ui: {
                    customWittyPhrases: ['test phrase'],
                },
            };
            const v1Settings = migrateSettingsToV1(v2Settings);
            expect(v1Settings).toEqual({
                customWittyPhrases: ['test phrase'],
            });
        });
    });
    describe('loadEnvironment', () => {
        function setup({ isFolderTrustEnabled = true, isWorkspaceTrustedValue = true, }) {
            delete process.env['TESTTEST']; // reset
            const geminiEnvPath = path.resolve(path.join(GEMINI_DIR, '.env'));
            vi.mocked(isWorkspaceTrusted).mockReturnValue({
                isTrusted: isWorkspaceTrustedValue,
                source: 'file',
            });
            mockFsExistsSync.mockImplementation((p) => [USER_SETTINGS_PATH, geminiEnvPath].includes(p.toString()));
            const userSettingsContent = {
                ui: {
                    theme: 'dark',
                },
                security: {
                    folderTrust: {
                        enabled: isFolderTrustEnabled,
                    },
                },
                context: {
                    fileName: 'USER_CONTEXT.md',
                },
            };
            fs.readFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === geminiEnvPath)
                    return 'TESTTEST=1234';
                return '{}';
            });
        }
        it('sets environment variables from .env files', () => {
            setup({ isFolderTrustEnabled: false, isWorkspaceTrustedValue: true });
            loadEnvironment(loadSettings(MOCK_WORKSPACE_DIR).merged);
            expect(process.env['TESTTEST']).toEqual('1234');
        });
        it('does not load env files from untrusted spaces', () => {
            setup({ isFolderTrustEnabled: true, isWorkspaceTrustedValue: false });
            loadEnvironment(loadSettings(MOCK_WORKSPACE_DIR).merged);
            expect(process.env['TESTTEST']).not.toEqual('1234');
        });
    });
    describe('needsMigration', () => {
        it('should return false for an empty object', () => {
            expect(needsMigration({})).toBe(false);
        });
        it('should return false for settings that are already in V2 format', () => {
            const v2Settings = {
                ui: {
                    theme: 'dark',
                },
                tools: {
                    sandbox: true,
                },
            };
            expect(needsMigration(v2Settings)).toBe(false);
        });
        it('should return true for settings with a V1 key that needs to be moved', () => {
            const v1Settings = {
                theme: 'dark', // v1 key
            };
            expect(needsMigration(v1Settings)).toBe(true);
        });
        it('should return true for settings with a mix of V1 and V2 keys', () => {
            const mixedSettings = {
                theme: 'dark', // v1 key
                tools: {
                    sandbox: true, // v2 key
                },
            };
            expect(needsMigration(mixedSettings)).toBe(true);
        });
        it('should return false for settings with only V1 keys that are the same in V2', () => {
            const v1Settings = {
                mcpServers: {},
                telemetry: {},
                extensions: [],
            };
            expect(needsMigration(v1Settings)).toBe(false);
        });
        it('should return true for settings with a mix of V1 keys that are the same in V2 and V1 keys that need moving', () => {
            const v1Settings = {
                mcpServers: {}, // same in v2
                theme: 'dark', // needs moving
            };
            expect(needsMigration(v1Settings)).toBe(true);
        });
        it('should return false for settings with unrecognized keys', () => {
            const settings = {
                someUnrecognizedKey: 'value',
            };
            expect(needsMigration(settings)).toBe(false);
        });
        it('should return false for settings with v2 keys and unrecognized keys', () => {
            const settings = {
                ui: { theme: 'dark' },
                someUnrecognizedKey: 'value',
            };
            expect(needsMigration(settings)).toBe(false);
        });
    });
    describe('migrateDeprecatedSettings', () => {
        let mockFsExistsSync;
        let mockFsReadFileSync;
        beforeEach(() => {
            vi.resetAllMocks();
            mockFsExistsSync = vi.mocked(fs.existsSync);
            mockFsExistsSync.mockReturnValue(true);
            mockFsReadFileSync = vi.mocked(fs.readFileSync);
            mockFsReadFileSync.mockReturnValue('{}');
            vi.mocked(isWorkspaceTrusted).mockReturnValue({
                isTrusted: true,
                source: undefined,
            });
        });
        afterEach(() => {
            vi.restoreAllMocks();
        });
        it('should migrate disabled extensions from user and workspace settings', () => {
            const userSettingsContent = {
                extensions: {
                    disabled: ['user-ext-1', 'shared-ext'],
                },
            };
            const workspaceSettingsContent = {
                extensions: {
                    disabled: ['workspace-ext-1', 'shared-ext'],
                },
            };
            mockFsReadFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const loadedSettings = loadSettings(MOCK_WORKSPACE_DIR);
            const setValueSpy = vi.spyOn(loadedSettings, 'setValue');
            const extensionManager = new ExtensionManager({
                settings: loadedSettings.merged,
                workspaceDir: MOCK_WORKSPACE_DIR,
                requestConsent: vi.fn(),
                requestSetting: vi.fn(),
            });
            const mockDisableExtension = vi.spyOn(extensionManager, 'disableExtension');
            mockDisableExtension.mockImplementation(async () => { });
            migrateDeprecatedSettings(loadedSettings, extensionManager);
            // Check user settings migration
            expect(mockDisableExtension).toHaveBeenCalledWith('user-ext-1', SettingScope.User);
            expect(mockDisableExtension).toHaveBeenCalledWith('shared-ext', SettingScope.User);
            // Check workspace settings migration
            expect(mockDisableExtension).toHaveBeenCalledWith('workspace-ext-1', SettingScope.Workspace);
            expect(mockDisableExtension).toHaveBeenCalledWith('shared-ext', SettingScope.Workspace);
            // Check that setValue was called to remove the deprecated setting
            expect(setValueSpy).toHaveBeenCalledWith(SettingScope.User, 'extensions', {
                disabled: undefined,
            });
            expect(setValueSpy).toHaveBeenCalledWith(SettingScope.Workspace, 'extensions', {
                disabled: undefined,
            });
        });
        it('should not do anything if there are no deprecated settings', () => {
            const userSettingsContent = {
                extensions: {
                    enabled: ['user-ext-1'],
                },
            };
            const workspaceSettingsContent = {
                someOtherSetting: 'value',
            };
            mockFsReadFileSync.mockImplementation((p) => {
                if (p === USER_SETTINGS_PATH)
                    return JSON.stringify(userSettingsContent);
                if (p === MOCK_WORKSPACE_SETTINGS_PATH)
                    return JSON.stringify(workspaceSettingsContent);
                return '{}';
            });
            const loadedSettings = loadSettings(MOCK_WORKSPACE_DIR);
            const setValueSpy = vi.spyOn(loadedSettings, 'setValue');
            const extensionManager = new ExtensionManager({
                settings: loadedSettings.merged,
                workspaceDir: MOCK_WORKSPACE_DIR,
                requestConsent: vi.fn(),
                requestSetting: vi.fn(),
            });
            const mockDisableExtension = vi.spyOn(extensionManager, 'disableExtension');
            mockDisableExtension.mockImplementation(async () => { });
            migrateDeprecatedSettings(loadedSettings, extensionManager);
            expect(mockDisableExtension).not.toHaveBeenCalled();
            expect(setValueSpy).not.toHaveBeenCalled();
        });
    });
    describe('saveSettings', () => {
        it('should save settings using updateSettingsFilePreservingFormat', () => {
            const mockUpdateSettings = vi.mocked(updateSettingsFilePreservingFormat);
            const settingsFile = {
                path: '/mock/settings.json',
                settings: { ui: { theme: 'dark' } },
                originalSettings: { ui: { theme: 'dark' } },
            };
            saveSettings(settingsFile);
            expect(mockUpdateSettings).toHaveBeenCalledWith('/mock/settings.json', {
                ui: { theme: 'dark' },
            });
        });
        it('should create directory if it does not exist', () => {
            const mockFsExistsSync = vi.mocked(fs.existsSync);
            const mockFsMkdirSync = vi.mocked(fs.mkdirSync);
            mockFsExistsSync.mockReturnValue(false);
            const settingsFile = {
                path: '/mock/new/dir/settings.json',
                settings: {},
                originalSettings: {},
            };
            saveSettings(settingsFile);
            expect(mockFsExistsSync).toHaveBeenCalledWith('/mock/new/dir');
            expect(mockFsMkdirSync).toHaveBeenCalledWith('/mock/new/dir', {
                recursive: true,
            });
        });
        it('should emit error feedback if saving fails', () => {
            const mockUpdateSettings = vi.mocked(updateSettingsFilePreservingFormat);
            const error = new Error('Write failed');
            mockUpdateSettings.mockImplementation(() => {
                throw error;
            });
            const settingsFile = {
                path: '/mock/settings.json',
                settings: {},
                originalSettings: {},
            };
            saveSettings(settingsFile);
            expect(mockCoreEvents.emitFeedback).toHaveBeenCalledWith('error', 'There was an error saving your latest settings changes.', error);
        });
    });
});
//# sourceMappingURL=settings.test.js.map