import root from '$lib/Utility/root';

export interface aniSearchBirthday {
  name: string;
  image: string;
}

const isAniSearchBirthday = (entry: unknown): entry is aniSearchBirthday =>
  typeof entry === 'object' &&
  entry !== null &&
  typeof (entry as { name?: unknown }).name === 'string' &&
  typeof (entry as { image?: unknown }).image === 'string';

export const aniSearchBirthdays = async (
  month: number,
  day: number
): Promise<aniSearchBirthday[]> => {
  const response = await fetch(root(`/api/birthdays/primary?month=${month}&day=${day}`), {});

  if (!response.ok) throw new Error(`Primary birthdays request failed with ${response.status}.`);

  const data: unknown = await response.json();

  if (!Array.isArray(data)) throw new Error('Primary birthdays response was not an array.');

  return data.filter(isAniSearchBirthday);
};