export interface Character {
	name: {
		full: string;
	};
	id: number;
	image: {
		large: string;
		medium: string;
	};
}

export interface CharactersPage {
	data: {
		Page: {
			characters: Character[];
			pageInfo: {
				hasNextPage: boolean;
				currentPage: number;
			};
		};
	};
}

const charactersPage = async (page: number): Promise<CharactersPage> =>
	await (
		await fetch("https://graphql.anilist.co", {
			method: "POST",
			headers: {
				"Content-Type": "application/json",
				Accept: "application/json",
			},
			body: JSON.stringify({
				query: `{ Page(page: ${page}, perPage: 50) {
				characters(isBirthday: true) { name { full } id image { large medium } }
				pageInfo { hasNextPage currentPage }
			} }`,
			}),
		})
	).json();

export const todaysCharacterBirthdays = async (): Promise<Character[]> => {
	const characters = [];
	let page = 1;
	let currentPage = await charactersPage(page);

	for (const character of currentPage.data.Page.characters)
		characters.push({
			id: character.id,
			name: {
				full: character.name.full,
			},
			image: {
				large: character.image.large,
				medium: character.image.medium,
			},
		});

	while (currentPage.data.Page.pageInfo.hasNextPage) {
		for (const character of currentPage.data.Page.characters)
			characters.push({
				id: character.id,
				name: {
					full: character.name.full,
				},
				image: {
					large: character.image.large,
					medium: character.image.medium,
				},
			});

		page += 1;
		currentPage = await charactersPage(page);
	}

	for (const character of currentPage.data.Page.characters)
		characters.push({
			id: character.id,
			name: {
				full: character.name.full,
			},
			image: {
				large: character.image.large,
				medium: character.image.medium,
			},
		});

	return characters;
};