"use strict";

const Promise = require("bluebird");

module.exports = function createApiRequester(apiUrl) {
	return function apiRequest(path, body) {
		return Promise.try(() => {
			let targetUrl = apiUrl + path;
	
			return Promise.try(() => {
				return fetch(targetUrl, {
					body: JSON.stringify(body),
					headers: {
						'content-type': 'application/json'
					},
					method: 'POST',
				});
			}).then((response) => {
				if (response.status >= 200 && response.status < 400) {
					return response.json();
				} else {
					throw new Error(`Non-200 response code for ${targetUrl}: ${response.status}`);
				}
			});
		});
	};
};