erium/src/handlers/RequestHandler.ts

Erium is Discord Bot Library made in typescript

import Client from "../structures/Client";
import axios, { AxiosInstance, Method } from "axios";
import { Endpoints } from "../Endpoints";

export class RequestHandler {
    private client: Client;
    private readonly instance: AxiosInstance;
    // @ts-ignore
    private BASE_URL: Endpoints.BASE_URL;

    public constructor(client: Client) {
        this.client = client;
        this.instance = axios.create({
            // @ts-ignore
            baseURL: this.BASE_URL,
            timeout: 1000,
            headers: {
                "Authorization": client.token
            }
        });
    }

    public async request(method: Method, url: string, data?: any): Promise<any> {
        const response = await this.instance({
            url: url,
            method: method,
            data: data
        }).catch(err => {
            switch (err.code) {
                case "400":
                    return new Error("Bad Request (code: 400)" + method + url + data + err.code);
                    break;
                case "401":
                    return new Error("Unauthorized (code: 401)" + method + url + data + err.code);
                    break;
                case "402":
                    break;
                case "403":
                    return new Error("Forbidden  (code: 403)" + method + url + data + err.code);
                    break;
                case "404":
                    return new Error("Not Found (code: 404)" + method + url + data + err.code);
                    break;
                case "405":
                    return new Error("Method not Allowed (code: 405)" + method + url + data + err.code);
                    break;
                case "429":
                    return new Error("Too many Requests (code: 429)" + method + url + data + err.code);
                    break;
                case "502":
                    return new Error("Gateway Unavailable (code: 502)" + method + url + data + err.code);
                    break;
                default:
                    return new Error(`Unknown error Code (code: ${err.code})` + method + url + data + err.code);
                    break;
            }
        });

        if (response instanceof Error) return response;
        if (response) return response.data;
        else return new Error("no response from api" + method + url + data);
    }
}