@lintangoao/soulcode-api-http

Reusable HTTP server wrapper untuk Soulcode API. Package ini menyediakan abstraksi yang mudah untuk membuat HTTP server dengan Express.

Installation

pnpm add @lintangoao/soulcode-api-http

Usage

Basic Server

import { HttpServer } from "@lintangoao/soulcode-api-http";

const server = new HttpServer({
  port: 3000,
  onReady: (port) => {
    console.log(`Server ready on port ${port}`);
  },
});

// Setup routes
server.app.get("/", (req, res) => {
  res.json({ message: "Hello World" });
});

// Start server
await server.start();

Auto-Load Routes

Package ini menyediakan fitur auto-loading untuk routes. Semua file dengan pattern *.routes.ts akan otomatis di-load.

import { HttpServer, autoLoadRoutes } from "@lintangoao/soulcode-api-http";
import { fileURLToPath } from "url";
import { dirname } from "path";

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

const server = new HttpServer({ port: 3000 });

// Auto-load semua routes dari directory
await autoLoadRoutes(server.app, {
  baseDir: __dirname,
  pattern: "**/*.routes.{ts,js}", // optional, default value
});

await server.start();

File structure example:

src/app/http/
├── index.ts
├── home/
│   └── home.routes.ts      -> akan di-load ke "/"
└── users/
    └── users.routes.ts     -> akan di-load ke "/users"

Example route file (home.routes.ts):

import { Router, requestHandler } from "@lintangoao/soulcode-api-http";
import { HomeController } from "@src/app/http/home/home.controller";

const router = Router();
const homeController = new HomeController();

// Gunakan requestHandler untuk auto error handling
router.get("/", requestHandler(homeController.index));

// IMPORTANT: harus export default
export default router;

Example controller (home.controller.ts):

import { TRequest, TRequestFunction } from "@lintangoao/soulcode-api-http";

export class HomeController {
  // Gunakan arrow function untuk auto-bind
  index: TRequestFunction = async (req) => {
    // Tidak perlu try-catch, requestHandler akan handle errors
    const data = await someAsyncOperation();
    
    // Return standard response format
    return {
      // statusCode: 200, // optional, default 200
      // message: "Success", // optional, default "Success"
      result: data,
    };
  };
}

Configuration Options

interface HttpServerConfig {
  port?: number;          // Default: 3000
  host?: string;          // Default: "0.0.0.0"
  cors?: boolean;         // Default: true
  helmet?: boolean;       // Default: true
  onReady?: (port: number) => void;
  onError?: (error: Error) => void;
}

interface AutoLoadOptions {
  baseDir: string;        // Directory untuk search routes
  pattern?: string;       // Glob pattern (default: **/*.routes.{ts,js})
}

Advanced Example

import { HttpServer } from "@lintangoao/soulcode-api-http";
import { log } from "@lintangoao/soulcode-api-core";

const server = new HttpServer({
  port: 8080,
  host: "localhost",
  cors: true,
  helmet: true,
  onReady: (port) => log.info(`Server running on port ${port}`),
  onError: (error) => log.error("Server error:", error),
});

// Access Express app directly
server.app.use((req, res, next) => {
  log.info(`${req.method} ${req.path}`);
  next();
});

// Define routes
server.app.get("/api/users", (req, res) => {
  res.json({ users: [] });
});

server.app.post("/api/users", (req, res) => {
  const user = req.body;
  res.status(201).json({ user });
});

// Start server
await server.start();

// Later, stop the server
await server.stop();

Request Handler

Package ini menyediakan requestHandler (alias: catchAsync) untuk wrap async controller methods dengan automatic error handling.

import { Router, requestHandler, TRequestFunction } from "@lintangoao/soulcode-api-http";

class UserController {
  // Gunakan arrow function untuk auto-bind
  getUsers: TRequestFunction = async (req) => {
    // Jika error, otomatis di-catch dan di-pass ke error middleware
    const users = await db.users.findMany();
    
    return {
      message: "Users retrieved successfully",
      result: users,
    };
  };
}

const controller = new UserController();
const router = Router();

// Wrap dengan requestHandler (tidak perlu .bind lagi)
router.get("/users", requestHandler(controller.getUsers));

Standard Response Format:

{
  "statusCode": 200,
  "message": "Success",
  "result": { ... }
}

Custom Types

Tidak perlu import dari express lagi:

import type { TRequest, TResponse, TNextFunction } from "@lintangoao/soulcode-api-http";
// Bukan: import { Request, Response } from "express";

Features

• ✅ Express.js wrapper dengan konfigurasi yang clean
• ✅ Built-in CORS support
• ✅ Built-in Helmet security headers
• ✅ JSON body parsing
• ✅ URL-encoded body parsing
• ✅ Auto-loading routes dengan glob pattern
• ✅ Request handler wrapper dengan auto error handling
• ✅ Custom types untuk menghindari import express di setiap file
• ✅ Graceful shutdown
• ✅ TypeScript support
• ✅ Logger integration dengan @lintangoao/soulcode-api-core

API Reference

HttpServer

Constructor

new HttpServer(config?: HttpServerConfig)

Properties

• app: Application - Express application instance

Methods

• start(): Promise<void> - Start the HTTP server
• stop(): Promise<void> - Stop the HTTP server gracefully
• getPort(): number - Get the current port number

autoLoadRoutes

async function autoLoadRoutes(
  app: Application,
  options: AutoLoadOptions
): Promise<void>

Auto-load semua file routes berdasarkan pattern. File harus export default router.

requestHandler / catchAsync

function requestHandler(
  handler: TAsyncRequestHandler
): TRequestHandler

Wrap async controller methods untuk automatic error handling. Errors akan otomatis di-catch dan di-pass ke error middleware.

Parameters:

• handler: (req: TRequest, res: TResponse) => Promise<void> - Async controller method

Returns:

• Express-compatible request handler dengan error handling

Example:

router.get("/users", requestHandler(controller.getUsers));

Response Examples:

// Default (statusCode: 200, message: "Success")
return { result: data };

// Custom message
return { 
  message: "User created successfully",
  result: newUser 
};

// Custom status code
return { 
  statusCode: 201,
  message: "Resource created",
  result: newResource 
};

// No data
return { 
  message: "Operation completed" 
};

Tips: Gunakan arrow functions di controller untuk auto-binding:

class MyController {
  // ✅ Arrow function dengan type annotation - auto-bind, clean syntax
  myMethod: TRequestFunction = async (req) => {
    // this.service works!
    return { result: data };
  };
  
  // ❌ Regular method - perlu .bind(this)
  async myMethod2(req: TRequest): Promise<ApiResponse> {
    // this.service might be undefined
  }
}

Types

• TRequest - Alias untuk Express Request
• TResponse - Alias untuk Express Response
• TNextFunction - Alias untuk Express NextFunction
• TRequestFunction<T> - Main type untuk controller methods

  type TRequestFunction<T = any> = (req: TRequest) => Promise<ApiResponse<T>>
    
  // Usage:
  myMethod: TRequestFunction = async (req) => { return {...} }

• TRequestHandler<T> - Alias untuk TRequestFunction
• TAsyncRequestHandler<T> - Alias untuk TRequestFunction
• ApiResponse<T> - Standard response format

  interface ApiResponse<T = any> {
    statusCode?: number;  // default: 200
    message?: string;     // default: "Success"
    result?: T;          // data payload
  }

License

MIT