import {IRequestOptions} from "../IRequestOptions";
import {globalSetupOptions} from "../globalSetup";
import {encodeParam} from "../URLUtils";
import {IParamsObject} from "../IParamsObject";

/**
 *
 * Post
 * Content-Type application/x-www-form-urlencoded
 *
 * */

export function postFormURLEncoded(path: string, data: IParamsObject | null, options?: IRequestOptions): Promise<any> {
	return new Promise((resolve, reject) => {
		const xhr = new XMLHttpRequest();
		xhr.onreadystatechange = function() {
			if(xhr.readyState === 4) {
				if(globalSetupOptions.afterEachRequest) {
					globalSetupOptions.afterEachRequest(xhr);
				}
				if(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304) {
					if(/application\/json/.test(xhr.getResponseHeader('Content-Type'))) {
						resolve(JSON.parse(xhr.responseText));
					} else {
						resolve(xhr.responseText);
					}
				} else {
					reject(new Error('xhr failed: ' + xhr.status));
				}
			}
		}
		xhr.open('POST', path);
		xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		if(globalSetupOptions.beforeEachRequest) {
			globalSetupOptions.beforeEachRequest(xhr);
		}

		if(options) {
			if(options.beforeSend) {
				options.beforeSend(xhr);
			}
		}
		if(!data) {
			data = {};
		}
		xhr.send(encodeParam(data));
	});
}