import RequestMethod from "./RequestMethod.js";

export default class ApiRequest
{
	protected static BASE_URL: string = 'api/v1/';

	protected request: XMLHttpRequest;
	protected method: RequestMethod;
	protected url: string;
	protected parameters: Record<string, any> = {};
	protected onSuccess: (responseText: string) => void;
	protected onError: (responseText: string, status: number) => void;

	public constructor(url: string, method: RequestMethod)
	{
		this.url = ApiRequest.BASE_URL + url;
		this.method = method;
		this.request = new XMLHttpRequest();
		this.request.open(this.method, this.url);
		this.onSuccess = () => {};
		this.onError = () => {};
	}

	public addParameter(name: string, value: any): void
	{
		this.parameters[name] = value;
	}

	public submit(): void
	{
		this.request.onreadystatechange = () => {
			if (this.request.readyState === 4) {
				if (this.request.status === 200) {
					this.onSuccess(this.request.responseText);
				} else {
					this.onError(this.request.responseText, this.request.status);
				}
			}
		}

		this.request.setRequestHeader('Content-Type', 'application/json');
		this.request.send(JSON.stringify(this.parameters));
	}

	public setOnSuccess(callback: (responseText: string) => void): void
	{
		this.onSuccess = callback;
	}

	public setOnError(callback: (responseText: string, status: number) => void): void
	{
		this.onError = callback;
	}
}