Simple Todolist API using NodeJS Native

http.mjs

import http from "http";

class TodoListService {

    todolist = ["Eko", "Kurniawan", "Khannedy"];

    getTodoListAsObject() {
        const result = [];
        for (let i = 0; i < this.todolist.length; i++) {
            result.push({
                id: i, todo: this.todolist[i]
            })
        }
        return result;
    }

    async getTodolist(request, response) {
        console.info("Get todolist");
        response.write(JSON.stringify({
            code: 200, status: "OK", data: this.getTodoListAsObject()
        }))
        response.end();
    }

    async addTodolist(request, response) {
        console.info("Add todolist");
        request.addListener("data", async (data) => {
            console.info(`Receive add todolist with body : ${data.toString()}`);

            const body = JSON.parse(data.toString());
            this.todolist.push(body.todo);

            response.write(JSON.stringify({
                code: 200, status: "OK", data: this.getTodoListAsObject()
            }))
            response.end();
        })
    }

    async updateTodolist(request, response) {
        console.info("Update todolist");
        request.addListener("data", async (data) => {
            console.info(`Receive update todolist with body : ${data.toString()}`);

            const body = JSON.parse(data.toString());
            if (this.todolist[body.id]) {
                this.todolist[body.id] = body.todo;
            }

            response.write(JSON.stringify({
                code: 200, status: "OK", data: this.getTodoListAsObject()
            }))
            response.end();
        })
    }

    async removeTodolist(request, response) {
        console.info("Remove todolist");
        request.addListener("data", async (data) => {
            console.info(`Receive remove todolist with body : ${data.toString()}`);

            const body = JSON.parse(data.toString());
            this.todolist.splice(body.id, 1);

            response.write(JSON.stringify({
                code: 200, status: "OK", data: this.getTodoListAsObject()
            }))
            response.end();
        })
    }

}

const todoListService = new TodoListService();

const server = http.createServer(async (request, response) => {
    response.setHeader('Content-Type', 'application/json');

    if (request.method === "GET") {
        await todoListService.getTodolist(request, response);
    } else if (request.method === "POST") {
        await todoListService.addTodolist(request, response);
    } else if (request.method === "DELETE") {
        await todoListService.removeTodolist(request, response);
    } else if (request.method === "PUT") {
        await todoListService.updateTodolist(request, response);
    }
});

server.listen(3000);