📦 refactor: Consolidate DB models, encapsulating Mongoose usage in data-schemas (#11830)

* chore: move database model methods to /packages/data-schemas

* chore: add TypeScript ESLint rule to warn on unused variables

* refactor: model imports to streamline access

- Consolidated model imports across various files to improve code organization and reduce redundancy.
- Updated imports for models such as Assistant, Message, Conversation, and others to a unified import path.
- Adjusted middleware and service files to reflect the new import structure, ensuring functionality remains intact.
- Enhanced test files to align with the new import paths, maintaining test coverage and integrity.

* chore: migrate database models to packages/data-schemas and refactor all direct Mongoose Model usage outside of data-schemas

* test: update agent model mocks in unit tests

- Added `getAgent` mock to `client.test.js` to enhance test coverage for agent-related functionality.
- Removed redundant `getAgent` and `getAgents` mocks from `openai.spec.js` and `responses.unit.spec.js` to streamline test setup and reduce duplication.
- Ensured consistency in agent mock implementations across test files.

* fix: update types in data-schemas

* refactor: enhance type definitions in transaction and spending methods

- Updated type definitions in `checkBalance.ts` to use specific request and response types.
- Refined `spendTokens.ts` to utilize a new `SpendTxData` interface for better clarity and type safety.
- Improved transaction handling in `transaction.ts` by introducing `TransactionResult` and `TxData` interfaces, ensuring consistent data structures across methods.
- Adjusted unit tests in `transaction.spec.ts` to accommodate new type definitions and enhance robustness.

* refactor: streamline model imports and enhance code organization

- Consolidated model imports across various controllers and services to a unified import path, improving code clarity and reducing redundancy.
- Updated multiple files to reflect the new import structure, ensuring all functionalities remain intact.
- Enhanced overall code organization by removing duplicate import statements and optimizing the usage of model methods.

* feat: implement loadAddedAgent and refactor agent loading logic

- Introduced `loadAddedAgent` function to handle loading agents from added conversations, supporting multi-convo parallel execution.
- Created a new `load.ts` file to encapsulate agent loading functionalities, including `loadEphemeralAgent` and `loadAgent`.
- Updated the `index.ts` file to export the new `load` module instead of the deprecated `loadAgent`.
- Enhanced type definitions and improved error handling in the agent loading process.
- Adjusted unit tests to reflect changes in the agent loading structure and ensure comprehensive coverage.

* refactor: enhance balance handling with new update interface

- Introduced `IBalanceUpdate` interface to streamline balance update operations across the codebase.
- Updated `upsertBalanceFields` method signatures in `balance.ts`, `transaction.ts`, and related tests to utilize the new interface for improved type safety.
- Adjusted type imports in `balance.spec.ts` to include `IBalanceUpdate`, ensuring consistency in balance management functionalities.
- Enhanced overall code clarity and maintainability by refining type definitions related to balance operations.

* feat: add unit tests for loadAgent functionality and enhance agent loading logic

- Introduced comprehensive unit tests for the `loadAgent` function, covering various scenarios including null and empty agent IDs, loading of ephemeral agents, and permission checks.
- Enhanced the `initializeClient` function by moving `getConvoFiles` to the correct position in the database method exports, ensuring proper functionality.
- Improved test coverage for agent loading, including handling of non-existent agents and user permissions.

* chore: reorder memory method exports for consistency

- Moved `deleteAllUserMemories` to the correct position in the exported memory methods, ensuring a consistent and logical order of method exports in `memory.ts`.

api/app/clients/BaseClient.js

@@ -3,6 +3,7 @@ const fetch = require('node-fetch');
 const { logger } = require('@librechat/data-schemas');
 const {
   countTokens,
+  checkBalance,
   getBalanceConfig,
   extractFileContext,
   encodeAndFormatAudios,
@@ -21,18 +22,11 @@ const {
   isEphemeralAgentId,
   supportsBalanceCheck,
 } = require('librechat-data-provider');
-const {
-  updateMessage,
-  getMessages,
-  saveMessage,
-  saveConvo,
-  getConvo,
-  getFiles,
-} = require('~/models');
 const { getStrategyFunctions } = require('~/server/services/Files/strategies');
-const { checkBalance } = require('~/models/balanceMethods');
 const { truncateToolCallOutputs } = require('./prompts');
+const { logViolation } = require('~/cache');
 const TextStream = require('./TextStream');
+const db = require('~/models');
 
 class BaseClient {
   constructor(apiKey, options = {}) {
@@ -683,18 +677,26 @@ class BaseClient {
       balanceConfig?.enabled &&
       supportsBalanceCheck[this.options.endpointType ?? this.options.endpoint]
     ) {
-      await checkBalance({
-        req: this.options.req,
-        res: this.options.res,
-        txData: {
-          user: this.user,
-          tokenType: 'prompt',
-          amount: promptTokens,
-          endpoint: this.options.endpoint,
-          model: this.modelOptions?.model ?? this.model,
-          endpointTokenConfig: this.options.endpointTokenConfig,
+      await checkBalance(
+        {
+          req: this.options.req,
+          res: this.options.res,
+          txData: {
+            user: this.user,
+            tokenType: 'prompt',
+            amount: promptTokens,
+            endpoint: this.options.endpoint,
+            model: this.modelOptions?.model ?? this.model,
+            endpointTokenConfig: this.options.endpointTokenConfig,
+          },
         },
-      });
+        {
+          logViolation,
+          getMultiplier: db.getMultiplier,
+          findBalanceByUser: db.findBalanceByUser,
+          createAutoRefillTransaction: db.createAutoRefillTransaction,
+        },
+      );
     }
 
     const { completion, metadata } = await this.sendCompletion(payload, opts);
@@ -883,7 +885,7 @@ class BaseClient {
   async loadHistory(conversationId, parentMessageId = null) {
     logger.debug('[BaseClient] Loading history:', { conversationId, parentMessageId });
 
-    const messages = (await getMessages({ conversationId })) ?? [];
+    const messages = (await db.getMessages({ conversationId })) ?? [];
 
     if (messages.length === 0) {
       return [];
@@ -939,8 +941,13 @@ class BaseClient {
     }
 
     const hasAddedConvo = this.options?.req?.body?.addedConvo != null;
-    const savedMessage = await saveMessage(
-      this.options?.req,
+    const reqCtx = {
+      userId: this.options?.req?.user?.id,
+      isTemporary: this.options?.req?.body?.isTemporary,
+      interfaceConfig: this.options?.req?.config?.interfaceConfig,
+    };
+    const savedMessage = await db.saveMessage(
+      reqCtx,
       {
         ...message,
         endpoint: this.options.endpoint,
@@ -965,7 +972,7 @@ class BaseClient {
     const existingConvo =
       this.fetchedConvo === true
         ? null
-        : await getConvo(this.options?.req?.user?.id, message.conversationId);
+        : await db.getConvo(this.options?.req?.user?.id, message.conversationId);
 
     const unsetFields = {};
     const exceptions = new Set(['spec', 'iconURL']);
@@ -992,7 +999,7 @@ class BaseClient {
       }
     }
 
-    const conversation = await saveConvo(this.options?.req, fieldsToKeep, {
+    const conversation = await db.saveConvo(reqCtx, fieldsToKeep, {
       context: 'api/app/clients/BaseClient.js - saveMessageToDatabase #saveConvo',
       unsetFields,
     });
@@ -1005,7 +1012,7 @@ class BaseClient {
    * @param {Partial<TMessage>} message
    */
   async updateMessageInDatabase(message) {
-    await updateMessage(this.options.req, message);
+    await db.updateMessage(this.options?.req?.user?.id, message);
   }
 
   /**
@@ -1399,7 +1406,7 @@ class BaseClient {
         return message;
       }
 
-      const files = await getFiles(
+      const files = await db.getFiles(
         {
           file_id: { $in: fileIds },
         },