smartrequest/ts/core_node/request.ts

import * as plugins from './plugins.js';
import * as types from './types.js';
import { CoreResponse } from './response.js';
import { CoreRequest as AbstractCoreRequest } from '../core_base/request.js';

// Keep-alive agents for connection pooling
const httpAgent = new plugins.agentkeepalive.HttpAgent({
  keepAlive: true,
  maxFreeSockets: 10,
  maxSockets: 100,
  maxTotalSockets: 1000,
});

const httpAgentKeepAliveFalse = new plugins.agentkeepalive.HttpAgent({
  keepAlive: false,
});

const httpsAgent = new plugins.agentkeepalive.HttpsAgent({
  keepAlive: true,
  maxFreeSockets: 10,
  maxSockets: 100,
  maxTotalSockets: 1000,
});

const httpsAgentKeepAliveFalse = new plugins.agentkeepalive.HttpsAgent({
  keepAlive: false,
});

/**
 * Node.js implementation of Core Request class that handles all HTTP/HTTPS requests
 */
export class CoreRequest extends AbstractCoreRequest<types.ICoreRequestOptions, CoreResponse> {
  private requestDataFunc: ((req: plugins.http.ClientRequest) => void) | null;

  constructor(
    url: string,
    options: types.ICoreRequestOptions = {},
    requestDataFunc: ((req: plugins.http.ClientRequest) => void) | null = null
  ) {
    super(url, options);
    this.requestDataFunc = requestDataFunc;
    
    // Check for unsupported fetch-specific options
    if (options.credentials || options.mode || options.cache || options.redirect || 
        options.referrer || options.referrerPolicy || options.integrity) {
      throw new Error('Fetch API specific options (credentials, mode, cache, redirect, referrer, referrerPolicy, integrity) are not supported in Node.js implementation');
    }
  }

  /**
   * Fire the request and return a CoreResponse
   */
  async fire(): Promise<CoreResponse> {
    const incomingMessage = await this.fireCore();
    return new CoreResponse(incomingMessage, this.url);
  }

  /**
   * Fire the request and return the raw IncomingMessage
   */
  async fireCore(): Promise<plugins.http.IncomingMessage> {
    const done = plugins.smartpromise.defer<plugins.http.IncomingMessage>();

    // Parse URL
    const parsedUrl = plugins.smarturl.Smarturl.createFromUrl(this.url, {
      searchParams: this.options.queryParams || {},
    });
    
    this.options.hostname = parsedUrl.hostname;
    if (parsedUrl.port) {
      this.options.port = parseInt(parsedUrl.port, 10);
    }
    this.options.path = parsedUrl.path;

    // Handle unix socket URLs
    if (CoreRequest.isUnixSocket(this.url)) {
      const { socketPath, path } = CoreRequest.parseUnixSocketUrl(this.options.path);
      this.options.socketPath = socketPath;
      this.options.path = path;
    }

    // Determine agent based on protocol and keep-alive setting
    if (!this.options.agent) {
      // Only use keep-alive agents if explicitly requested
      if (this.options.keepAlive === true) {
        this.options.agent = parsedUrl.protocol === 'https:' ? httpsAgent : httpAgent;
      } else if (this.options.keepAlive === false) {
        this.options.agent = parsedUrl.protocol === 'https:' ? httpsAgentKeepAliveFalse : httpAgentKeepAliveFalse;
      }
      // If keepAlive is undefined, don't set any agent (more fetch-like behavior)
    }

    // Determine request module
    const requestModule = parsedUrl.protocol === 'https:' ? plugins.https : plugins.http;

    if (!requestModule) {
      throw new Error(`The request to ${this.url} is missing a viable protocol. Must be http or https`);
    }

    // Perform the request
    const request = requestModule.request(this.options, async (response) => {
      // Handle hard timeout
      if (this.options.hardDataCuttingTimeout) {
        setTimeout(() => {
          response.destroy();
          done.reject(new Error('Request timed out'));
        }, this.options.hardDataCuttingTimeout);
      }

      // Always return the raw stream
      done.resolve(response);
    });

    // Write request body
    if (this.options.requestBody) {
      if (this.options.requestBody instanceof plugins.formData) {
        this.options.requestBody.pipe(request).on('finish', () => {
          request.end();
        });
      } else {
        // Write body as-is - caller is responsible for serialization
        const bodyData = typeof this.options.requestBody === 'string' 
          ? this.options.requestBody 
          : this.options.requestBody instanceof Buffer 
            ? this.options.requestBody
            : JSON.stringify(this.options.requestBody); // Still stringify for backward compatibility
        request.write(bodyData);
        request.end();
      }
    } else if (this.requestDataFunc) {
      this.requestDataFunc(request);
    } else {
      request.end();
    }

    // Handle request errors
    request.on('error', (e) => {
      console.error(e);
      request.destroy();
      done.reject(e);
    });

    // Get response and handle response errors
    const response = await done.promise;
    response.on('error', (err) => {
      console.error(err);
      response.destroy();
    });

    return response;
  }

  /**
   * Static factory method to create and fire a request
   */
  static async create(
    url: string,
    options: types.ICoreRequestOptions = {}
  ): Promise<CoreResponse> {
    const request = new CoreRequest(url, options);
    return request.fire();
  }
}