LibreChat/api/server/services/AppService.spec.js

const {
  FileSources,
  EModelEndpoint,
  EImageOutputType,
  AgentCapabilities,
  defaultSocialLogins,
  validateAzureGroups,
  defaultAgentCapabilities,
  deprecatedAzureVariables,
  conflictingAzureVariables,
} = require('librechat-data-provider');

const AppService = require('./AppService');

jest.mock('./Config/loadCustomConfig', () => {
  return jest.fn(() =>
    Promise.resolve({
      registration: { socialLogins: ['testLogin'] },
      fileStrategy: 'testStrategy',
      balance: {
        enabled: true,
      },
    }),
  );
});
jest.mock('./Files/Firebase/initialize', () => ({
  initializeFirebase: jest.fn(),
}));
jest.mock('~/models', () => ({
  initializeRoles: jest.fn(),
  seedDefaultRoles: jest.fn(),
  ensureDefaultCategories: jest.fn(),
}));
jest.mock('~/models/Role', () => ({
  updateAccessPermissions: jest.fn(),
}));
jest.mock('./Config', () => ({
  setCachedTools: jest.fn(),
  getCachedTools: jest.fn().mockResolvedValue({
    ExampleTool: {
      type: 'function',
      function: {
        description: 'Example tool function',
        name: 'exampleFunction',
        parameters: {
          type: 'object',
          properties: {
            param1: { type: 'string', description: 'An example parameter' },
          },
          required: ['param1'],
        },
      },
    },
  }),
}));
jest.mock('./ToolService', () => ({
  loadAndFormatTools: jest.fn().mockReturnValue({
    ExampleTool: {
      type: 'function',
      function: {
        description: 'Example tool function',
        name: 'exampleFunction',
        parameters: {
          type: 'object',
          properties: {
            param1: { type: 'string', description: 'An example parameter' },
          },
          required: ['param1'],
        },
      },
    },
  }),
}));
jest.mock('./start/turnstile', () => ({
  loadTurnstileConfig: jest.fn(() => ({
    siteKey: 'default-site-key',
    options: {},
  })),
}));

const azureGroups = [
  {
    group: 'librechat-westus',
    apiKey: '${WESTUS_API_KEY}',
    instanceName: 'librechat-westus',
    version: '2023-12-01-preview',
    models: {
      'gpt-4-vision-preview': {
        deploymentName: 'gpt-4-vision-preview',
        version: '2024-02-15-preview',
      },
      'gpt-3.5-turbo': {
        deploymentName: 'gpt-35-turbo',
      },
      'gpt-3.5-turbo-1106': {
        deploymentName: 'gpt-35-turbo-1106',
      },
      'gpt-4': {
        deploymentName: 'gpt-4',
      },
      'gpt-4-1106-preview': {
        deploymentName: 'gpt-4-1106-preview',
      },
    },
  },
  {
    group: 'librechat-eastus',
    apiKey: '${EASTUS_API_KEY}',
    instanceName: 'librechat-eastus',
    deploymentName: 'gpt-4-turbo',
    version: '2024-02-15-preview',
    models: {
      'gpt-4-turbo': true,
    },
  },
];

describe('AppService', () => {
  let app;
  const mockedTurnstileConfig = {
    siteKey: 'default-site-key',
    options: {},
  };

  beforeEach(() => {
    app = { locals: {} };
    process.env.CDN_PROVIDER = undefined;
  });

  it('should correctly assign process.env and app.locals based on custom config', async () => {
    await AppService(app);

    expect(process.env.CDN_PROVIDER).toEqual('testStrategy');

    expect(app.locals).toEqual({
      socialLogins: ['testLogin'],
      fileStrategy: 'testStrategy',
      interfaceConfig: expect.objectContaining({
        endpointsMenu: true,
        modelSelect: true,
        parameters: true,
        sidePanel: true,
        presets: true,
      }),
      mcpConfig: null,
      turnstileConfig: mockedTurnstileConfig,
      modelSpecs: undefined,
      paths: expect.anything(),
      ocr: expect.anything(),
      imageOutputType: expect.any(String),
      fileConfig: undefined,
      secureImageLinks: undefined,
      balance: { enabled: true },
      filteredTools: undefined,
      includedTools: undefined,
      webSearch: {
        safeSearch: 1,
        jinaApiKey: '${JINA_API_KEY}',
        cohereApiKey: '${COHERE_API_KEY}',
        serperApiKey: '${SERPER_API_KEY}',
        searxngApiKey: '${SEARXNG_API_KEY}',
        firecrawlApiKey: '${FIRECRAWL_API_KEY}',
        firecrawlApiUrl: '${FIRECRAWL_API_URL}',
        searxngInstanceUrl: '${SEARXNG_INSTANCE_URL}',
      },
      memory: undefined,
      agents: {
        disableBuilder: false,
        capabilities: expect.arrayContaining([...defaultAgentCapabilities]),
        maxCitations: 30,
        maxCitationsPerFile: 7,
        minRelevanceScore: 0.45,
      },
    });
  });

  it('should log a warning if the config version is outdated', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        version: '0.9.0', // An outdated version for this test
        registration: { socialLogins: ['testLogin'] },
        fileStrategy: 'testStrategy',
      }),
    );

    await AppService(app);

    const { logger } = require('~/config');
    expect(logger.info).toHaveBeenCalledWith(expect.stringContaining('Outdated Config version'));
  });

  it('should change the `imageOutputType` based on config value', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        version: '0.10.0',
        imageOutputType: EImageOutputType.WEBP,
      }),
    );

    await AppService(app);
    expect(app.locals.imageOutputType).toEqual(EImageOutputType.WEBP);
  });

  it('should default to `PNG` `imageOutputType` with no provided type', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        version: '0.10.0',
      }),
    );

    await AppService(app);
    expect(app.locals.imageOutputType).toEqual(EImageOutputType.PNG);
  });

  it('should default to `PNG` `imageOutputType` with no provided config', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() => Promise.resolve(undefined));

    await AppService(app);
    expect(app.locals.imageOutputType).toEqual(EImageOutputType.PNG);
  });

  it('should initialize Firebase when fileStrategy is firebase', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        fileStrategy: FileSources.firebase,
      }),
    );

    await AppService(app);

    const { initializeFirebase } = require('./Files/Firebase/initialize');
    expect(initializeFirebase).toHaveBeenCalled();

    expect(process.env.CDN_PROVIDER).toEqual(FileSources.firebase);
  });

  it('should load and format tools accurately with defined structure', async () => {
    const { loadAndFormatTools } = require('./ToolService');
    const { setCachedTools, getCachedTools } = require('./Config');

    await AppService(app);

    expect(loadAndFormatTools).toHaveBeenCalledWith({
      adminFilter: undefined,
      adminIncluded: undefined,
      directory: expect.anything(),
    });

    // Verify setCachedTools was called with the tools
    expect(setCachedTools).toHaveBeenCalledWith(
      {
        ExampleTool: {
          type: 'function',
          function: {
            description: 'Example tool function',
            name: 'exampleFunction',
            parameters: {
              type: 'object',
              properties: {
                param1: { type: 'string', description: 'An example parameter' },
              },
              required: ['param1'],
            },
          },
        },
      },
      { isGlobal: true },
    );

    // Verify we can retrieve the tools from cache
    const cachedTools = await getCachedTools({ includeGlobal: true });
    expect(cachedTools.ExampleTool).toBeDefined();
    expect(cachedTools.ExampleTool).toEqual({
      type: 'function',
      function: {
        description: 'Example tool function',
        name: 'exampleFunction',
        parameters: {
          type: 'object',
          properties: {
            param1: { type: 'string', description: 'An example parameter' },
          },
          required: ['param1'],
        },
      },
    });
  });

  it('should correctly configure Assistants endpoint based on custom config', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.assistants]: {
            disableBuilder: true,
            pollIntervalMs: 5000,
            timeoutMs: 30000,
            supportedIds: ['id1', 'id2'],
            privateAssistants: false,
          },
        },
      }),
    );

    await AppService(app);

    expect(app.locals).toHaveProperty(EModelEndpoint.assistants);
    expect(app.locals[EModelEndpoint.assistants]).toEqual(
      expect.objectContaining({
        disableBuilder: true,
        pollIntervalMs: 5000,
        timeoutMs: 30000,
        supportedIds: expect.arrayContaining(['id1', 'id2']),
        privateAssistants: false,
      }),
    );
  });

  it('should correctly configure Agents endpoint based on custom config', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.agents]: {
            disableBuilder: true,
            recursionLimit: 10,
            maxRecursionLimit: 20,
            allowedProviders: ['openai', 'anthropic'],
            capabilities: [AgentCapabilities.tools, AgentCapabilities.actions],
          },
        },
      }),
    );

    await AppService(app);

    expect(app.locals).toHaveProperty(EModelEndpoint.agents);
    expect(app.locals[EModelEndpoint.agents]).toEqual(
      expect.objectContaining({
        disableBuilder: true,
        recursionLimit: 10,
        maxRecursionLimit: 20,
        allowedProviders: expect.arrayContaining(['openai', 'anthropic']),
        capabilities: expect.arrayContaining([AgentCapabilities.tools, AgentCapabilities.actions]),
      }),
    );
  });

  it('should configure Agents endpoint with defaults when no config is provided', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() => Promise.resolve({}));

    await AppService(app);

    expect(app.locals).toHaveProperty(EModelEndpoint.agents);
    expect(app.locals[EModelEndpoint.agents]).toEqual(
      expect.objectContaining({
        disableBuilder: false,
        capabilities: expect.arrayContaining([...defaultAgentCapabilities]),
      }),
    );
  });

  it('should configure Agents endpoint with defaults when endpoints exist but agents is not defined', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.openAI]: {
            titleConvo: true,
          },
        },
      }),
    );

    await AppService(app);

    expect(app.locals).toHaveProperty(EModelEndpoint.agents);
    expect(app.locals[EModelEndpoint.agents]).toEqual(
      expect.objectContaining({
        disableBuilder: false,
        capabilities: expect.arrayContaining([...defaultAgentCapabilities]),
      }),
    );
  });

  it('should correctly configure minimum Azure OpenAI Assistant values', async () => {
    const assistantGroups = [azureGroups[0], { ...azureGroups[1], assistants: true }];
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.azureOpenAI]: {
            groups: assistantGroups,
            assistants: true,
          },
        },
      }),
    );

    process.env.WESTUS_API_KEY = 'westus-key';
    process.env.EASTUS_API_KEY = 'eastus-key';

    await AppService(app);
    expect(app.locals).toHaveProperty(EModelEndpoint.azureAssistants);
    expect(app.locals[EModelEndpoint.azureAssistants].capabilities.length).toEqual(3);
  });

  it('should correctly configure Azure OpenAI endpoint based on custom config', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.azureOpenAI]: {
            groups: azureGroups,
          },
        },
      }),
    );

    process.env.WESTUS_API_KEY = 'westus-key';
    process.env.EASTUS_API_KEY = 'eastus-key';

    await AppService(app);

    expect(app.locals).toHaveProperty(EModelEndpoint.azureOpenAI);
    const azureConfig = app.locals[EModelEndpoint.azureOpenAI];
    expect(azureConfig).toHaveProperty('modelNames');
    expect(azureConfig).toHaveProperty('modelGroupMap');
    expect(azureConfig).toHaveProperty('groupMap');

    const { modelNames, modelGroupMap, groupMap } = validateAzureGroups(azureGroups);
    expect(azureConfig.modelNames).toEqual(modelNames);
    expect(azureConfig.modelGroupMap).toEqual(modelGroupMap);
    expect(azureConfig.groupMap).toEqual(groupMap);
  });

  it('should not modify FILE_UPLOAD environment variables without rate limits', async () => {
    // Setup initial environment variables
    process.env.FILE_UPLOAD_IP_MAX = '10';
    process.env.FILE_UPLOAD_IP_WINDOW = '15';
    process.env.FILE_UPLOAD_USER_MAX = '5';
    process.env.FILE_UPLOAD_USER_WINDOW = '20';

    const initialEnv = { ...process.env };

    await AppService(app);

    // Expect environment variables to remain unchanged
    expect(process.env.FILE_UPLOAD_IP_MAX).toEqual(initialEnv.FILE_UPLOAD_IP_MAX);
    expect(process.env.FILE_UPLOAD_IP_WINDOW).toEqual(initialEnv.FILE_UPLOAD_IP_WINDOW);
    expect(process.env.FILE_UPLOAD_USER_MAX).toEqual(initialEnv.FILE_UPLOAD_USER_MAX);
    expect(process.env.FILE_UPLOAD_USER_WINDOW).toEqual(initialEnv.FILE_UPLOAD_USER_WINDOW);
  });

  it('should correctly set FILE_UPLOAD environment variables based on rate limits', async () => {
    // Define and mock a custom configuration with rate limits
    const rateLimitsConfig = {
      rateLimits: {
        fileUploads: {
          ipMax: '100',
          ipWindowInMinutes: '60',
          userMax: '50',
          userWindowInMinutes: '30',
        },
      },
    };

    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve(rateLimitsConfig),
    );

    await AppService(app);

    // Verify that process.env has been updated according to the rate limits config
    expect(process.env.FILE_UPLOAD_IP_MAX).toEqual('100');
    expect(process.env.FILE_UPLOAD_IP_WINDOW).toEqual('60');
    expect(process.env.FILE_UPLOAD_USER_MAX).toEqual('50');
    expect(process.env.FILE_UPLOAD_USER_WINDOW).toEqual('30');
  });

  it('should fallback to default FILE_UPLOAD environment variables when rate limits are unspecified', async () => {
    // Setup initial environment variables to non-default values
    process.env.FILE_UPLOAD_IP_MAX = 'initialMax';
    process.env.FILE_UPLOAD_IP_WINDOW = 'initialWindow';
    process.env.FILE_UPLOAD_USER_MAX = 'initialUserMax';
    process.env.FILE_UPLOAD_USER_WINDOW = 'initialUserWindow';

    await AppService(app);

    // Verify that process.env falls back to the initial values
    expect(process.env.FILE_UPLOAD_IP_MAX).toEqual('initialMax');
    expect(process.env.FILE_UPLOAD_IP_WINDOW).toEqual('initialWindow');
    expect(process.env.FILE_UPLOAD_USER_MAX).toEqual('initialUserMax');
    expect(process.env.FILE_UPLOAD_USER_WINDOW).toEqual('initialUserWindow');
  });

  it('should not modify IMPORT environment variables without rate limits', async () => {
    // Setup initial environment variables
    process.env.IMPORT_IP_MAX = '10';
    process.env.IMPORT_IP_WINDOW = '15';
    process.env.IMPORT_USER_MAX = '5';
    process.env.IMPORT_USER_WINDOW = '20';

    const initialEnv = { ...process.env };

    await AppService(app);

    // Expect environment variables to remain unchanged
    expect(process.env.IMPORT_IP_MAX).toEqual(initialEnv.IMPORT_IP_MAX);
    expect(process.env.IMPORT_IP_WINDOW).toEqual(initialEnv.IMPORT_IP_WINDOW);
    expect(process.env.IMPORT_USER_MAX).toEqual(initialEnv.IMPORT_USER_MAX);
    expect(process.env.IMPORT_USER_WINDOW).toEqual(initialEnv.IMPORT_USER_WINDOW);
  });

  it('should correctly set IMPORT environment variables based on rate limits', async () => {
    // Define and mock a custom configuration with rate limits
    const importLimitsConfig = {
      rateLimits: {
        conversationsImport: {
          ipMax: '150',
          ipWindowInMinutes: '60',
          userMax: '50',
          userWindowInMinutes: '30',
        },
      },
    };

    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve(importLimitsConfig),
    );

    await AppService(app);

    // Verify that process.env has been updated according to the rate limits config
    expect(process.env.IMPORT_IP_MAX).toEqual('150');
    expect(process.env.IMPORT_IP_WINDOW).toEqual('60');
    expect(process.env.IMPORT_USER_MAX).toEqual('50');
    expect(process.env.IMPORT_USER_WINDOW).toEqual('30');
  });

  it('should fallback to default IMPORT environment variables when rate limits are unspecified', async () => {
    // Setup initial environment variables to non-default values
    process.env.IMPORT_IP_MAX = 'initialMax';
    process.env.IMPORT_IP_WINDOW = 'initialWindow';
    process.env.IMPORT_USER_MAX = 'initialUserMax';
    process.env.IMPORT_USER_WINDOW = 'initialUserWindow';

    await AppService(app);

    // Verify that process.env falls back to the initial values
    expect(process.env.IMPORT_IP_MAX).toEqual('initialMax');
    expect(process.env.IMPORT_IP_WINDOW).toEqual('initialWindow');
    expect(process.env.IMPORT_USER_MAX).toEqual('initialUserMax');
    expect(process.env.IMPORT_USER_WINDOW).toEqual('initialUserWindow');
  });

  it('should correctly configure endpoint with titlePrompt, titleMethod, and titlePromptTemplate', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.openAI]: {
            titleConvo: true,
            titleModel: 'gpt-3.5-turbo',
            titleMethod: 'structured',
            titlePrompt: 'Custom title prompt for conversation',
            titlePromptTemplate: 'Summarize this conversation: {{conversation}}',
          },
          [EModelEndpoint.assistants]: {
            titleMethod: 'functions',
            titlePrompt: 'Generate a title for this assistant conversation',
            titlePromptTemplate: 'Assistant conversation template: {{messages}}',
          },
          [EModelEndpoint.azureOpenAI]: {
            groups: azureGroups,
            titleConvo: true,
            titleMethod: 'completion',
            titleModel: 'gpt-4',
            titlePrompt: 'Azure title prompt',
            titlePromptTemplate: 'Azure conversation: {{context}}',
          },
        },
      }),
    );

    await AppService(app);

    // Check OpenAI endpoint configuration
    expect(app.locals).toHaveProperty(EModelEndpoint.openAI);
    expect(app.locals[EModelEndpoint.openAI]).toEqual(
      expect.objectContaining({
        titleConvo: true,
        titleModel: 'gpt-3.5-turbo',
        titleMethod: 'structured',
        titlePrompt: 'Custom title prompt for conversation',
        titlePromptTemplate: 'Summarize this conversation: {{conversation}}',
      }),
    );

    // Check Assistants endpoint configuration
    expect(app.locals).toHaveProperty(EModelEndpoint.assistants);
    expect(app.locals[EModelEndpoint.assistants]).toMatchObject({
      titleMethod: 'functions',
      titlePrompt: 'Generate a title for this assistant conversation',
      titlePromptTemplate: 'Assistant conversation template: {{messages}}',
    });

    // Check Azure OpenAI endpoint configuration
    expect(app.locals).toHaveProperty(EModelEndpoint.azureOpenAI);
    expect(app.locals[EModelEndpoint.azureOpenAI]).toEqual(
      expect.objectContaining({
        titleConvo: true,
        titleMethod: 'completion',
        titleModel: 'gpt-4',
        titlePrompt: 'Azure title prompt',
        titlePromptTemplate: 'Azure conversation: {{context}}',
      }),
    );
  });

  it('should configure Agent endpoint with title generation settings', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.agents]: {
            disableBuilder: false,
            titleConvo: true,
            titleModel: 'gpt-4',
            titleMethod: 'structured',
            titlePrompt: 'Generate a descriptive title for this agent conversation',
            titlePromptTemplate: 'Agent conversation summary: {{content}}',
            recursionLimit: 15,
            capabilities: [AgentCapabilities.tools, AgentCapabilities.actions],
          },
        },
      }),
    );

    await AppService(app);

    expect(app.locals).toHaveProperty(EModelEndpoint.agents);
    expect(app.locals[EModelEndpoint.agents]).toMatchObject({
      disableBuilder: false,
      titleConvo: true,
      titleModel: 'gpt-4',
      titleMethod: 'structured',
      titlePrompt: 'Generate a descriptive title for this agent conversation',
      titlePromptTemplate: 'Agent conversation summary: {{content}}',
      recursionLimit: 15,
      capabilities: expect.arrayContaining([AgentCapabilities.tools, AgentCapabilities.actions]),
    });
  });

  it('should handle missing title configuration options with defaults', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.openAI]: {
            titleConvo: true,
            // titlePrompt and titlePromptTemplate are not provided
          },
        },
      }),
    );

    await AppService(app);

    expect(app.locals).toHaveProperty(EModelEndpoint.openAI);
    expect(app.locals[EModelEndpoint.openAI]).toMatchObject({
      titleConvo: true,
    });
    // Check that the optional fields are undefined when not provided
    expect(app.locals[EModelEndpoint.openAI].titlePrompt).toBeUndefined();
    expect(app.locals[EModelEndpoint.openAI].titlePromptTemplate).toBeUndefined();
    expect(app.locals[EModelEndpoint.openAI].titleMethod).toBeUndefined();
  });

  it('should correctly configure titleEndpoint when specified', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.openAI]: {
            titleConvo: true,
            titleModel: 'gpt-3.5-turbo',
            titleEndpoint: EModelEndpoint.anthropic,
            titlePrompt: 'Generate a concise title',
          },
          [EModelEndpoint.agents]: {
            titleEndpoint: 'custom-provider',
            titleMethod: 'structured',
          },
        },
      }),
    );

    await AppService(app);

    // Check OpenAI endpoint has titleEndpoint
    expect(app.locals).toHaveProperty(EModelEndpoint.openAI);
    expect(app.locals[EModelEndpoint.openAI]).toMatchObject({
      titleConvo: true,
      titleModel: 'gpt-3.5-turbo',
      titleEndpoint: EModelEndpoint.anthropic,
      titlePrompt: 'Generate a concise title',
    });

    // Check Agents endpoint has titleEndpoint
    expect(app.locals).toHaveProperty(EModelEndpoint.agents);
    expect(app.locals[EModelEndpoint.agents]).toMatchObject({
      titleEndpoint: 'custom-provider',
      titleMethod: 'structured',
    });
  });

  it('should correctly configure all endpoint when specified', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          all: {
            titleConvo: true,
            titleModel: 'gpt-4o-mini',
            titleMethod: 'structured',
            titlePrompt: 'Default title prompt for all endpoints',
            titlePromptTemplate: 'Default template: {{conversation}}',
            titleEndpoint: EModelEndpoint.anthropic,
            streamRate: 50,
          },
          [EModelEndpoint.openAI]: {
            titleConvo: true,
            titleModel: 'gpt-3.5-turbo',
          },
        },
      }),
    );

    await AppService(app);

    // Check that 'all' endpoint config is loaded
    expect(app.locals).toHaveProperty('all');
    expect(app.locals.all).toMatchObject({
      titleConvo: true,
      titleModel: 'gpt-4o-mini',
      titleMethod: 'structured',
      titlePrompt: 'Default title prompt for all endpoints',
      titlePromptTemplate: 'Default template: {{conversation}}',
      titleEndpoint: EModelEndpoint.anthropic,
      streamRate: 50,
    });

    // Check that OpenAI endpoint has its own config
    expect(app.locals).toHaveProperty(EModelEndpoint.openAI);
    expect(app.locals[EModelEndpoint.openAI]).toMatchObject({
      titleConvo: true,
      titleModel: 'gpt-3.5-turbo',
    });
  });
});

describe('AppService updating app.locals and issuing warnings', () => {
  let app;
  let initialEnv;

  beforeEach(() => {
    // Store initial environment variables to restore them after each test
    initialEnv = { ...process.env };

    app = { locals: {} };
    process.env.CDN_PROVIDER = undefined;
  });

  afterEach(() => {
    // Restore initial environment variables
    process.env = { ...initialEnv };
  });

  it('should update app.locals with default values if loadCustomConfig returns undefined', async () => {
    // Mock loadCustomConfig to return undefined
    require('./Config/loadCustomConfig').mockImplementationOnce(() => Promise.resolve(undefined));

    await AppService(app);

    expect(app.locals).toBeDefined();
    expect(app.locals.paths).toBeDefined();
    expect(app.locals.fileStrategy).toEqual(FileSources.local);
    expect(app.locals.socialLogins).toEqual(defaultSocialLogins);
    expect(app.locals.balance).toEqual(
      expect.objectContaining({
        enabled: false,
        startBalance: undefined,
      }),
    );
  });

  it('should update app.locals with values from loadCustomConfig', async () => {
    // Mock loadCustomConfig to return a specific config object with a complete balance config
    const customConfig = {
      fileStrategy: 'firebase',
      registration: { socialLogins: ['testLogin'] },
      balance: {
        enabled: false,
        startBalance: 5000,
        autoRefillEnabled: true,
        refillIntervalValue: 15,
        refillIntervalUnit: 'hours',
        refillAmount: 5000,
      },
    };
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve(customConfig),
    );

    await AppService(app);

    expect(app.locals).toBeDefined();
    expect(app.locals.paths).toBeDefined();
    expect(app.locals.fileStrategy).toEqual(customConfig.fileStrategy);
    expect(app.locals.socialLogins).toEqual(customConfig.registration.socialLogins);
    expect(app.locals.balance).toEqual(customConfig.balance);
  });

  it('should apply the assistants endpoint configuration correctly to app.locals', async () => {
    const mockConfig = {
      endpoints: {
        assistants: {
          disableBuilder: true,
          pollIntervalMs: 5000,
          timeoutMs: 30000,
          supportedIds: ['id1', 'id2'],
        },
      },
    };
    require('./Config/loadCustomConfig').mockImplementationOnce(() => Promise.resolve(mockConfig));

    const app = { locals: {} };
    await AppService(app);

    expect(app.locals).toHaveProperty('assistants');
    const { assistants } = app.locals;
    expect(assistants.disableBuilder).toBe(true);
    expect(assistants.pollIntervalMs).toBe(5000);
    expect(assistants.timeoutMs).toBe(30000);
    expect(assistants.supportedIds).toEqual(['id1', 'id2']);
    expect(assistants.excludedIds).toBeUndefined();
  });

  it('should log a warning when both supportedIds and excludedIds are provided', async () => {
    const mockConfig = {
      endpoints: {
        assistants: {
          disableBuilder: false,
          pollIntervalMs: 3000,
          timeoutMs: 20000,
          supportedIds: ['id1', 'id2'],
          excludedIds: ['id3'],
        },
      },
    };
    require('./Config/loadCustomConfig').mockImplementationOnce(() => Promise.resolve(mockConfig));

    const app = { locals: {} };
    await require('./AppService')(app);

    const { logger } = require('~/config');
    expect(logger.warn).toHaveBeenCalledWith(
      expect.stringContaining(
        "The 'assistants' endpoint has both 'supportedIds' and 'excludedIds' defined.",
      ),
    );
  });

  it('should log a warning when privateAssistants and supportedIds or excludedIds are provided', async () => {
    const mockConfig = {
      endpoints: {
        assistants: {
          privateAssistants: true,
          supportedIds: ['id1'],
        },
      },
    };
    require('./Config/loadCustomConfig').mockImplementationOnce(() => Promise.resolve(mockConfig));

    const app = { locals: {} };
    await require('./AppService')(app);

    const { logger } = require('~/config');
    expect(logger.warn).toHaveBeenCalledWith(
      expect.stringContaining(
        "The 'assistants' endpoint has both 'privateAssistants' and 'supportedIds' or 'excludedIds' defined.",
      ),
    );
  });

  it('should issue expected warnings when loading Azure Groups with deprecated Environment Variables', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.azureOpenAI]: {
            groups: azureGroups,
          },
        },
      }),
    );

    deprecatedAzureVariables.forEach((varInfo) => {
      process.env[varInfo.key] = 'test';
    });

    const app = { locals: {} };
    await require('./AppService')(app);

    const { logger } = require('~/config');
    deprecatedAzureVariables.forEach(({ key, description }) => {
      expect(logger.warn).toHaveBeenCalledWith(
        `The \`${key}\` environment variable (related to ${description}) should not be used in combination with the \`azureOpenAI\` endpoint configuration, as you will experience conflicts and errors.`,
      );
    });
  });

  it('should issue expected warnings when loading conflicting Azure Envrionment Variables', async () => {
    require('./Config/loadCustomConfig').mockImplementationOnce(() =>
      Promise.resolve({
        endpoints: {
          [EModelEndpoint.azureOpenAI]: {
            groups: azureGroups,
          },
        },
      }),
    );

    conflictingAzureVariables.forEach((varInfo) => {
      process.env[varInfo.key] = 'test';
    });

    const app = { locals: {} };
    await require('./AppService')(app);

    const { logger } = require('~/config');
    conflictingAzureVariables.forEach(({ key }) => {
      expect(logger.warn).toHaveBeenCalledWith(
        `The \`${key}\` environment variable should not be used in combination with the \`azureOpenAI\` endpoint configuration, as you may experience with the defined placeholders for mapping to the current model grouping using the same name.`,
      );
    });
  });

  it('should not parse environment variable references in OCR config', async () => {
    // Mock custom configuration with env variable references in OCR config
    const mockConfig = {
      ocr: {
        apiKey: '${OCR_API_KEY_CUSTOM_VAR_NAME}',
        baseURL: '${OCR_BASEURL_CUSTOM_VAR_NAME}',
        strategy: 'mistral_ocr',
        mistralModel: 'mistral-medium',
      },
    };

    require('./Config/loadCustomConfig').mockImplementationOnce(() => Promise.resolve(mockConfig));

    // Set actual environment variables with different values
    process.env.OCR_API_KEY_CUSTOM_VAR_NAME = 'actual-api-key';
    process.env.OCR_BASEURL_CUSTOM_VAR_NAME = 'https://actual-ocr-url.com';

    // Initialize app
    const app = { locals: {} };
    await AppService(app);

    // Verify that the raw string references were preserved and not interpolated
    expect(app.locals.ocr).toBeDefined();
    expect(app.locals.ocr.apiKey).toEqual('${OCR_API_KEY_CUSTOM_VAR_NAME}');
    expect(app.locals.ocr.baseURL).toEqual('${OCR_BASEURL_CUSTOM_VAR_NAME}');
    expect(app.locals.ocr.strategy).toEqual('mistral_ocr');
    expect(app.locals.ocr.mistralModel).toEqual('mistral-medium');
  });
});