#!/bin/env -S deno run -A

function main() {
	const input = read_input("./input.csv");

	const MAX_IN_GROUP = 4;
	const groups = Array.from(range(1, 7))
		.map((sujet_no) => ({ sujet_no, members: [] as { login: string; prio: number }[] }));

	for (const prio of range(1, 7)) {
		for (const entry of input) {
			if (entry.placed) continue;
			for (const [index, choice] of enumerate(entry.choices)) {
				if (choice !== prio) continue;
				if (groups[index].members.length >= MAX_IN_GROUP) continue;
				groups[index].members.push({ login: entry.login, prio });
				entry.placed = true;
			}
		}
	}

	let result = "";
	for (const group of groups) {
		const members = group.members.map((item) => `${item.login}(${item.prio})`).join("\t");
		const line = `Sujet ${group.sujet_no}\t${members}`;
		result += line + "\n";
	}
	Deno.writeTextFileSync("./output.csv", result);
}

function read_input(path: string) {
	const content = Deno.readTextFileSync(path);
	const cells = content.split("\n").filter((line) => line !== "").map((line) => line.split("\t"));
	const toint = (n: string) => ((parsed) => isNaN(parsed) ? 0 : parsed)(parseInt(n));
	return cells.map((
		[login, s1, s2, s3, s4, s5, s6],
	) => ({ login, choices: ([s1, s2, s3, s4, s5, s6] as const).map(toint), placed: false }));
}

function* range(from: number, to: number) {
	while (from < to) yield from++;
}

function* enumerate<T>(iterable: Iterable<T>) {
	let index = 0;
	for (const item of iterable) yield [index++, item] as const;
}

if (import.meta.main) main();