Move app to apps/web-react in pnpm workspace layout

apps/web-react/app/utils/users.ts

@@ -0,0 +1,69 @@
+import { logger } from "./logger";
+import { isCustomUrl } from "./urls";
+
+const longUrlRegExp = /(https:\/\/)?sendou\.ink\/u\/([^/?#]+)/;
+const shortUrlRegExp = /(https:\/\/)?snd\.ink\/([^/?#]+)/;
+const DISCORD_ID_MIN_LENGTH = 17;
+export function queryToUserIdentifier(
+	query: string,
+): { id: number } | { discordId: string } | { customUrl: string } | null {
+	const longUrlMatch = query.match(longUrlRegExp);
+	const shortUrlMatch = query.match(shortUrlRegExp);
+
+	if (longUrlMatch || shortUrlMatch) {
+		const [, , identifier] = (longUrlMatch ?? shortUrlMatch)!;
+
+		if (isCustomUrl(identifier)) {
+			return { customUrl: identifier };
+		}
+
+		if (identifier.length >= DISCORD_ID_MIN_LENGTH) {
+			return { discordId: identifier };
+		}
+
+		return { id: Number(identifier) };
+	}
+
+	// = it's numeric
+	if (!isCustomUrl(query)) {
+		if (query.length >= DISCORD_ID_MIN_LENGTH) {
+			return { discordId: query };
+		}
+
+		return { id: Number(query) };
+	}
+
+	return null;
+}
+
+// snowflake logic from https://github.dev/vegeta897/snow-stamp/blob/main/src/util.js
+const DISCORD_EPOCH = 1420070400000;
+
+// Converts a snowflake ID string into a JS Date object using the provided epoch (in ms), or Discord's epoch if not provided
+export function convertSnowflakeToDate(snowflake: string) {
+	// Convert snowflake to BigInt to extract timestamp bits
+	// https://discord.com/developers/docs/reference#snowflakes
+	const milliseconds = BigInt(snowflake) >> 22n;
+	return new Date(Number(milliseconds) + DISCORD_EPOCH);
+}
+
+const AGED_CRITERIA = 1000 * 60 * 60 * 24 * 30 * 3; // 3 months
+export function userDiscordIdIsAged(user: { discordId: string }) {
+	if (!user.discordId || user.discordId.length < DISCORD_ID_MIN_LENGTH) {
+		logger.error("Invalid or missing discord id", {
+			discordId: user.discordId,
+		});
+
+		return false;
+	}
+
+	const timestamp = convertSnowflakeToDate(user.discordId).getTime();
+
+	return Date.now() - timestamp > AGED_CRITERIA;
+}
+
+export function accountCreatedInTheLastSixMonths(discordId: string) {
+	const timestamp = convertSnowflakeToDate(discordId).getTime();
+
+	return Date.now() - timestamp < 1000 * 60 * 60 * 24 * 30 * 6;
+}