import type { User } from '$lib/types';

export const getCookieValue = (name: string): string =>
	document.cookie.match('(^|;)\\s*' + name + '\\s*=\\s*([^;]+)')?.pop() || '';

export const getUserFromJWT = (jwt: string): User => JSON.parse(atob(jwt.split('.')[1]));

// export const userData = () => {
// 	let userData: User | null = null;
// 	const cookieValue = getCookieValue('jwt');
// 	if (cookieValue) {
// 		userData = getUserFromJWT(cookieValue);
// 	}
// 	return userData;
// };

export function getFormString(data: FormData, key: string): string | undefined {
	const value = data.get(key);
	if (value === null) {
		return undefined;
	}

	if (typeof value !== 'string') {
		throw Error(`Incorrect input in field ${key}.`);
	}
	return value.trim();
}

export function getRequiredFormString(data: FormData, key: string) {
	const value = data.get(key);
	if (typeof value !== 'string') {
		throw Error(`Missing required field ${key}.`);
	}
	return value.trim();
}

export const dateFormatOptions: Intl.DateTimeFormatOptions = {
	year: 'numeric',
	month: 'short',
	day: 'numeric'
};