73 lines
2 KiB
TypeScript
73 lines
2 KiB
TypeScript
import { ensureDir, path, readAll, readLines } from "./deps.ts";
|
|
|
|
export const HOME = Deno.env.get("HOME") || "/tmp";
|
|
export const XDG_CACHE_HOME = Deno.env.get("XDG_CACHE_HOME") ||
|
|
path.join(HOME, ".config");
|
|
|
|
const INPUT_CACHE_DIR = path.join(XDG_CACHE_HOME, "aoc2021");
|
|
|
|
async function fileExists(filePath: string) {
|
|
try {
|
|
await Deno.lstat(filePath);
|
|
return true;
|
|
} catch (e) {
|
|
if (e instanceof Deno.errors.NotFound) {
|
|
return false;
|
|
}
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
function inputFilePath(day: string) {
|
|
return path.join(INPUT_CACHE_DIR, `${day}.input`);
|
|
}
|
|
|
|
async function ensureInput(day: string) {
|
|
const filePath = inputFilePath(day);
|
|
await ensureDir(INPUT_CACHE_DIR);
|
|
if (await fileExists(filePath)) return;
|
|
const cookieFile = path.join(HOME, ".advent-of-code-2021-auth-cookie");
|
|
let cookie = "";
|
|
try {
|
|
cookie = Deno.env.get("ADVENT_OF_CODE_2021_AUTH_COOKIE") ||
|
|
new TextDecoder().decode(
|
|
await readAll(await Deno.open(cookieFile)),
|
|
);
|
|
} catch (e) {
|
|
console.error(
|
|
`Failed to load adventofcode.com cookie from ADVENT_OF_CODE_2021_AUTH_COOKIE environment variable or from file ${cookieFile}`,
|
|
);
|
|
throw e;
|
|
}
|
|
const url = `https://adventofcode.com/2021/day/${day}/input`;
|
|
const response = await fetch(url, { headers: { cookie } });
|
|
await Deno.writeTextFile(filePath, await response.text());
|
|
}
|
|
|
|
async function fileLines(
|
|
filePath: string,
|
|
): Promise<AsyncIterableIterator<string>> {
|
|
return readLines(await Deno.open(filePath));
|
|
}
|
|
|
|
export async function inputLines(
|
|
day: string,
|
|
): Promise<AsyncIterableIterator<string>> {
|
|
await ensureInput(day);
|
|
return fileLines(inputFilePath(day));
|
|
}
|
|
|
|
async function* readStringsAsNumbers(
|
|
input: AsyncIterableIterator<string>,
|
|
): AsyncIterableIterator<number> {
|
|
for await (const s of input) {
|
|
yield parseInt(s);
|
|
}
|
|
}
|
|
|
|
export async function inputNumbers(
|
|
day: string,
|
|
): Promise<AsyncIterableIterator<number>> {
|
|
return readStringsAsNumbers(await inputLines(day));
|
|
}
|