/** Better Auth requires an email internally; this is never a contact address. */
export const AUTH_EMAIL_DOMAIN = 'identity.invalid';

export function contactEmail(value: string | null | undefined): string | null {
	const email = value?.trim().toLowerCase();
	if (!email || /@(?:osu\.local|discord\.local|identity\.invalid)$/.test(email)) return null;
	return email;
}

export function newAuthIdentity(): string {
	return `${crypto.randomUUID()}@${AUTH_EMAIL_DOMAIN}`;
}

export interface ConnectionProfile {
	username: string;
	image: string | null;
	email: string | null;
	emailVerified: boolean;
	countryCode?: string | null;
	globalRank?: number | null;
}