Repository: danny-avila/LibreChat
File: api/app/clients/BaseClient.js (JavaScript)

Code before:
      mergedContent[lastIndex] = {
        ...mergedContent[lastIndex],
        [ContentTypes.THINK]:
          (mergedContent[lastIndex][ContentTypes.THINK] || '') +
          (firstNew[ContentTypes.THINK] || ''),
      };
    }

    // Add remaining completion items
    return mergedContent.concat(newCompletion.slice(1));
  }

  async sendPayload(payload, opts = {}) {
    if (opts && typeof opts === 'object') {
      this.setOptions(opts);
    }

    return await this.sendCompletion(payload, opts);
  }

  async addDocuments(message, attachments) {
    const documentResult = await encodeAndFormatDocuments(
      this.options.req,
      attachments,
      {
        provider: this.options.agent?.provider,
        endpoint: this.options.agent?.endpoint,
        useResponsesApi: this.options.agent?.model_parameters?.useResponsesApi,
      },
      getStrategyFunctions,
    );
    message.documents =
      documentResult.documents && documentResult.documents.length
        ? documentResult.documents
        : undefined;
    return documentResult.files;
  }

  async addVideos(message, attachments) {
    const videoResult = await encodeAndFormatVideos(
      this.options.req,
      attachments,
      {
        provider: this.options.agent?.provider,
        endpoint: this.options.agent?.endpoint,
      },
      getStrategyFunctions,
    );
    message.videos =
      videoResult.videos && videoResult.videos.length ? videoResult.videos : undefined;
    return videoResult.files;

Review comment (suggestion):
@dustinhealy I think this shouldn't even use client properties at all and instead have this happen at some different point of the pipeline. To start, the provider can be passed explicitly to the method. 

Think forward with multi-agents, as is already an issue: https://github.com/danny-avila/LibreChat/issues/10569

Code after:
      mergedContent[lastIndex] = {
        ...mergedContent[lastIndex],
        [ContentTypes.THINK]:
          (mergedContent[lastIndex][ContentTypes.THINK] || '') +
          (firstNew[ContentTypes.THINK] || ''),
      };
    }

    // Add remaining completion items
    return mergedContent.concat(newCompletion.slice(1));
  }

  async sendPayload(payload, opts = {}) {
    if (opts && typeof opts === 'object') {
      this.setOptions(opts);
    }

    return await this.sendCompletion(payload, opts);
  }

  async addDocuments(message, attachments) {
    const documentResult = await encodeAndFormatDocuments(
      this.options.req,
      attachments,
      {
        provider: this.options.agent?.provider ?? this.options.endpoint,
        endpoint: this.options.agent?.endpoint ?? this.options.endpoint,
        useResponsesApi: this.options.agent?.model_parameters?.useResponsesApi,
      },
      getStrategyFunctions,
    );
    message.documents =
      documentResult.documents && documentResult.documents.length
        ? documentResult.documents
        : undefined;
    return documentResult.files;
  }

  async addVideos(message, attachments) {
    const videoResult = await encodeAndFormatVideos(
      this.options.req,
      attachments,
      {
        provider: this.options.agent?.provider ?? this.options.endpoint,
        endpoint: this.options.agent?.endpoint ?? this.options.endpoint,
      },
      getStrategyFunctions,
    );
    message.videos =
      videoResult.videos && videoResult.videos.length ? videoResult.videos : undefined;
    return videoResult.files;