export interface UserIdentity {
	id: number;
	name: string;
	avatar: string;
}

export interface AniListAuthorisation {
	tokenType: string;
	accessToken: string;
	expiresIn: number;
	refreshToken: string;
}

export const userIdentity = async (
	anilistAuthorisation: AniListAuthorisation,
): Promise<UserIdentity> => {
	const userIdResponse = await (
		await fetch("https://graphql.anilist.co", {
			method: "POST",
			headers: {
				Authorization: `${anilistAuthorisation.tokenType} ${anilistAuthorisation.accessToken}`,
				"Content-Type": "application/json",
				Accept: "application/json",
			},
			body: JSON.stringify({
				query: `{ Viewer { id name avatar { large } } }`,
			}),
		})
	).json();

	return {
		id: userIdResponse.data.Viewer.id,
		name: userIdResponse.data.Viewer.name,
		avatar: userIdResponse.data.Viewer.avatar.large,
	};
};

export const safeUserIdentity = async (
	anilistAuthorisation: AniListAuthorisation,
): Promise<UserIdentity | null> => {
	try {
		const identity = await userIdentity(anilistAuthorisation);

		if (!identity.id || !identity.name || !identity.avatar) return null;

		return identity;
	} catch {
		return null;
	}
};