frictionless-browser/js/app.js

let area = document.querySelector('#area-main');
let entries = [];
let users = {};

let fetchData; 

let sum = 0;

async function genTree(treeId) {
	let entry = treeId;

	while (true) {
		let entryDat = fetchData[entry];
		if (!entryDat) break;
		
		entries.push(entry);

		let us = users[entryDat.username];

		console.log(entryDat);

		let s = Math.pow(0.5,(new Date() - new Date(entryDat.datetime_created.$date)) / (1000*60*60*24))
		sum += s;
		users[entryDat.username] = (us ? us : 0) + s;
		entry = entryDat.parent_id;
	}

	return entry;
}

let doThings = false;

async function main() {
	fetchData = await fetch(`https://scratch.mit.edu/projects/1052168454/remixtree/bare/`).then(x => x.json());

	let latestData = await fetch("https://corsproxy.io/?https://api.scratch.mit.edu/studios/34493018/projects").then(x => x.json());

	let lid = latestData[0].id;
	while (fetchData[lid].children.length > 0) {
		let ch = fetchData[lid].children;
		let ch2 = ch.filter(x => fetchData[x].children.length > 0);
		lid = ch2[0] || ch[0];
	}
	await genTree(lid); // latest project
	await genTree("654605857"); // tree bug here, unavoidable without jank
	doThings = true;
	document.querySelector('.contributors').innerHTML = Object.keys(users)
		.sort((x, y) => users[y] - users[x])
		.map(x => `<a href='https://scratch.mit.edu/users/${x}'>${x}</a> <sub>${Math.trunc(users[x] / sum * 100000) / 1000}%</sub>`)
		.join(', '); // Doesn't need to be sanitized (hopefully)
}

main();

let i = 0;

function sanitize(content) {
	const decoder = document.createElement('div');
	decoder.textContent = content;
	return decoder.innerHTML;
}

setInterval(function () {
	if (doThings && (window.innerHeight + window.scrollY) >= document.body.scrollHeight - 25) {
		let h = '';
		for (let j = 0; j < 35; j++) {
			let entry = entries[i];
			if (!entry || !(entry in fetchData)) break;
			h += `<div class='proj'><a href="https://scratch.mit.edu/projects/${entry}"><img src='https://uploads.scratch.mit.edu/get_image/project/${entry}_1920x1080.png'>${sanitize(fetchData[entry].title)}</a> <sub>#${entries.length - i} by ${fetchData[entry].username}</sub></div>`;
			i++;
		}
		area.innerHTML += h;
	}
}, 500);