Improved Roster Scraper for Campus Labs

hawklinkrosterscraper.js

var orgID = // Your Organization ID;
    
getOrganization(orgID, 1).then((initialOrg) => {
	getOrganization(orgID, initialOrg.totalItems).then((fullOrg) => {
		let promises = [];
		fullOrg.items.forEach((item) => {
			let memberID = item.account.id;
			let p = getMember(memberID);
			promises.push(p);
		});
		Promise.all(promises.map(reflectPromise)).then((res) => {
			console.log(res);
			res.forEach((res) => {
				if (res.success) {
					let member = res.data;
					if (member.name && member.emailAddress) {
						let out = `${member.name},${member.emailAddress}<br>`;
						document.write(out);
					}
				}
			});
		}).catch(console.error);
	});
}).catch(console.error);

function getOrganization(orgID, take) {
	return new Promise((resolve, reject) => {
		let n = take || 1;
		let orgURL = `https://connection.erau.edu/api/discovery/organization/${orgID}/member?take=${n}`;
		getXHR(orgURL).then(resolve).catch(reject);
	});
}

function getMember(memberID) {
	return new Promise((resolve, reject) => {
		let memberURL = `https://connection.erau.edu/api/discovery/communitymember/${memberID}`;
		getXHR(memberURL).then(resolve).catch(reject);
	});
}

function reflectPromise(promise) {
	return new Promise((resolve, reject) => {
		promise.then((data) => {
			resolve({
				success: true,
				data: data,
				error: {}
			});
		}).catch((error) => {
			resolve({
				success: false,
				data: {},
				error: error
			});
		});
	});
}

function getXHR(url) {
	return new Promise((resolve, reject) => {
		try {
			let data = null;
			let xhr = new XMLHttpRequest();
			xhr.withCredentials = true;
			xhr.addEventListener("readystatechange", function () {
				if (this.readyState === 4) {
					let res = JSON.parse(this.responseText)
					resolve(res);
				}
			});
			xhr.open("GET", url);
			xhr.send(data);
		} catch (err) {
			reject(err);
		}
	});
}