refactor(db): streamline model imports and remove unused model exports

- Removed the export of models from the database connection module to simplify the structure.
- Updated various files to import models directly from the new centralized models module.
- Ensured consistency across the codebase by replacing mongoose model references with the new import paths.

api/strategies/appleStrategy.test.js

@@ -7,7 +7,7 @@ const { createSocialUser, handleExistingUser } = require('./process');
 const { isEnabled } = require('~/server/utils');
 const socialLogin = require('./socialLogin');
 
-const User = mongoose.models.User;
+const User = require('~/db/models').User;
 
 // Mocking external dependencies
 jest.mock('jsonwebtoken');

api/strategies/jwtStrategy.js

@@ -3,7 +3,7 @@ const { logger } = require('@librechat/data-schemas');
 const { SystemRoles } = require('librechat-data-provider');
 const { Strategy: JwtStrategy, ExtractJwt } = require('passport-jwt');
 
-const User = mongoose.models.User;
+const User = require('~/db/models').User;
 
 // JWT strategy
 const jwtLogin = () =>

api/strategies/ldapStrategy.js

@@ -7,7 +7,7 @@ const { createUser, findUser, updateUser } = require('~/models');
 const { getBalanceConfig } = require('~/server/services/Config');
 const { isEnabled } = require('~/server/utils');
 
-const User = mongoose.models.User;
+const User = require('~/db/models').User;
 
 const {
   LDAP_URL,

api/strategies/localStrategy.js

@@ -6,7 +6,7 @@ const { isEnabled, checkEmailConfig } = require('~/server/utils');
 const { comparePassword } = require('~/models');
 const { loginSchema } = require('./validators');
 
-const User = mongoose.models.User;
+const User = require('~/db/models').User;
 
 // Unix timestamp for 2024-06-07 15:20:18 Eastern Time
 const verificationEnabledTimestamp = 1717788018;

api/strategies/openidStrategy.js

@@ -11,7 +11,7 @@ const { getStrategyFunctions } = require('~/server/services/Files/strategies');
 const getLogStores = require('~/cache/getLogStores');
 const { isEnabled } = require('~/server/utils');
 
-const User = mongoose.models.User;
+const User = require('~/db/models').User;
 
 /**
  * @typedef {import('openid-client').ClientMetadata} ClientMetadata
@@ -38,7 +38,6 @@ class CustomOpenIDStrategy extends OpenIDStrategy {
   }
 }
 
-const db = require('db/connect');
 const { getBalanceConfig } = require('~/server/services/Config');
 
 let crypto;

api/strategies/openidStrategy.spec.js

@@ -17,16 +17,6 @@ const mockModels = {
   },
 };
 
-jest.mock('~/db/connect', () => {
-  return {
-    getModels: jest.fn(() => mockModels),
-    connectDb: jest.fn(),
-    get models() {
-      return mockModels;
-    },
-  };
-});
-
 jest.mock('~/server/services/Config', () => ({
   getBalanceConfig: jest.fn(),
 }));
@@ -132,7 +122,7 @@ describe('setupOpenId', () => {
       picture: 'https://example.com/avatar.png',
     }),
   };
-  const User = mongoose.models.User;
+  const User = require('~/db/models').User;
   beforeEach(async () => {
     // Clear previous mock calls and reset implementations
     jest.clearAllMocks();