pulls.js

var fetch = require('node-fetch');

/*
 * Gets the name of the user who made a given PR and the repo they made the PR to
 */
function getListOfReposAndPRs(allPRs){
	let listOfPRs = []
	for (var i = 0; i < allPRs.length; i++){
		// each element in allPRs is a list of PRs, sorted ascending
		let currRepo = allPRs[i];

		// iterates through list of pr's for a repo
		for (var j = 0; j < currRepo.length; j++){
			let user = currRepo[j].user.login;
			// get repo url by remove the /pull/{number} at the end
			let repoURL = currRepo[j].html_url.split("/pull/", 2)[0];
			let repoName = repoURL.split("/os-ucsd/", 2)[1];
			let timeOfPR = new Date(currRepo[j].merged_at);

			// processing merged_at time to something readable
			let dateStr = timeOfPR.toDateString();
			let timeStr = timeOfPR.toLocaleTimeString();
			
			// make sure the pr was actually merged in
			if (currRepo[j].merged_at != null){
				listOfPRs.push({
					user: user, 
					repoURL: repoURL,
					repoName: repoName,
					date: dateStr,
					time: timeStr,
				});
			}
		}
	}

	// sorting all of the pr's based on time merged in
	listOfPRs = listOfPRs.sort((a,b) => {
		let dateA = new Date(a.date);
		let dateB = new Date(b.date);

		if (dateA - dateB == 0){	
			let timeA = Date.parse('1/01/2019 ' + a.time);
			let timeB = Date.parse('1/01/2019 ' + b.time);	
			return timeB - timeA;
		}
		return new Date(b.date) - new Date(a.date);
	});

	console.log(listOfPRs);
	return listOfPRs;
}

/*
 * Returns list of all PRs made to a given repo
 */
async function getPullRequests(repo){
	let prResponse = await fetch(repo.pulls_url.replace('{/number}', '?state=closed'));
	let pr = await prResponse.json();
	return pr;
}

/*
 * Make HTTP request to retrieve list of repos from os-ucsd
 */
async function getRepos(){
	let reposResponse = await fetch('https://api.github.com/orgs/os-ucsd/repos')
	let repos = await reposResponse.json();
	
	// get pr's for all repos
	let allPRs = await Promise.all( 
		repos.map(repo => {
			// each pr returned is a list of pr's for a single repo
			return getPullRequests(repo);
		})
	);

	return getListOfReposAndPRs(allPRs);
}

getRepos();