import type { User } from './follow';
import { user } from './user';

export interface Thread {
  id: number;
  title: string;
  createdAt: number;
  mediaCategories: {
    coverImage: {
      extraLarge: string;
      medium: string;
    };
  }[];
  categories: {
    name: string;
  }[];
}

export interface ThreadPage {
  data: {
    Page: {
      threads: Thread[];
      pageInfo: {
        hasNextPage: boolean;
        currentPage: number;
      };
    };
  };
}

const threadPage = async (page: number, userId: number): Promise<ThreadPage> =>
  await (
    await fetch('https://graphql.anilist.co', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        Accept: 'application/json'
      },
      body: JSON.stringify({
        query: `{ Page(perPage: 50, page: ${page}) {
  threads(userId: ${userId}) { id title createdAt mediaCategories { coverImage { extraLarge medium } } categories { name } }
  pageInfo { hasNextPage }
} }`
      })
    })
  ).json();

export const threads = async (username: string): Promise<Thread[]> => {
  const allThreads = [];
  const userData = await user(username);

  if (!userData) throw new Error(`User not found: ${username}`);

  const userId = userData.id;
  let page = 1;
  let currentPage = await threadPage(page, userId);

  for (const thread of currentPage.data.Page.threads) allThreads.push(thread);

  while (currentPage.data.Page.pageInfo.hasNextPage) {
    page += 1;
    currentPage = await threadPage(page, userId);

    for (const thread of currentPage.data.Page.threads) allThreads.push(thread);
  }

  return allThreads;
};

export const threadLikes = async (id: number): Promise<Partial<User>[]> => {
  const activityResponse = await (
    await fetch('https://graphql.anilist.co', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        Accept: 'application/json'
      },
      body: JSON.stringify({ query: `{ Thread(id: ${id}) { likes { name avatar { large } } } }` })
    })
  ).json();

  return activityResponse['data']['Thread']['likes'];
};