import { type Job } from 'bullmq';
import { getPocketBaseClient } from '../util/pocketbase';
import { subMinutes } from 'date-fns'; // optional, or use plain JS Date


interface PatreonMember {
  id: string;
  type: 'member';
  attributes: Record<string, unknown>;
  relationships: {
    currently_entitled_tiers: {
      data: PatreonTierRef[];
    };
    user: {
      data: PatreonUserRef;
      links?: {
        related?: string;
      };
    };
  };
}

export interface PatreonTierRef {
  id: string;
  type: 'tier';
}

export interface PatreonUserRef {
  id: string;
  type: 'user';
}

export type PatreonIncluded = PatreonUser | PatreonTier | PatreonMember;

export interface PatreonUser {
  id: string;
  type: 'user';
  attributes: {
    full_name: string;
    vanity: string | null;
  };
}

export interface PatreonTier {
  id: string;
  type: 'tier';
  attributes: Record<string, unknown>;
}


export interface PatreonUserResponse {
  data: PatreonUserData;
  included?: PatreonIncluded[];
  links?: {
    self?: string;
  };
}

export interface PatreonUserData {
  id: string;
  type: 'user';
  attributes: {
    email: string;
    first_name: string;
    last_name: string;
    full_name: string;
    vanity: string | null;
    about: string | null;
    image_url: string;
    thumb_url: string;
    created: string; // ISO date string
    url: string;
  };
  relationships?: {
    memberships?: {
      data: {
        id: string;
        type: 'member';
      }[];
    };
  };
}


export interface PatreonTier {
  id: string;
  type: 'tier';
  attributes: Record<string, unknown>;
  relationships?: {
    benefits?: {
      data: { id: string; type: string }[];
    };
  };
}



export const PatreonTiers = [
  { name: 'ArchiveSupporter', id: '8154170', role: 'supporterTier1' },
  { name: 'StealthSupporter', id: '9561793', role: 'supporterTier1' },
  { name: 'TuneItUp', id: '9184994', role: 'supporterTier2' },
  { name: 'MaxQ', id: '22529959', role: 'supporterTier3' },
  { name: 'ArchiveCollector', id: '8154171', role: 'supporterTier4' },
  { name: 'AdvancedArchiveSupporter', id: '8686045', role: 'supporterTier4' },
  { name: 'QuantumSupporter', id: '8694826', role: 'supporterTier5' },
  { name: 'SneakyQuantumSupporter', id: '9560538', role: 'supporterTier5' },
  { name: 'LuberPlusPlus', id: '8686022', role: 'supporterTier6' }
];



interface PatreonMember {
  userId: string;
}



// small output type
export interface SimplePatreonMember { userId: string }



export async function getPatreonPatronStatus(
  job: Job,
  accessToken: string
): Promise<boolean> {
  const url =
    'https://www.patreon.com/api/oauth2/v2/identity?fields%5Buser%5D=about,created,email,first_name,full_name,image_url,last_name,thumb_url,url,vanity&include=memberships,memberships.currently_entitled_tiers,memberships.currently_entitled_tiers.benefits';

  const res = await fetch(url, {
    headers: {
      Authorization: `Bearer ${accessToken}`,
    },
  });

  if (!res.ok) {
    throw new Error(`Patreon API error: ${res.status} ${res.statusText}`);
  }

  const data = (await res.json()) as PatreonUserResponse;
  const included = data.included ?? [];


  const memberObjects = included.filter((item) => item.type === 'member');
  job.log(`Found ${memberObjects.length} membership(s)`);

  const validTierIds = PatreonTiers.map((tier) => tier.id);

  for (const member of memberObjects) {
    const tiers = member.relationships?.currently_entitled_tiers?.data ?? [];
    job.log(`Membership ${member.id} has tiers: ${tiers.map(t => t.id)}`);

    // Check if any tier is in our whitelist
    const hasValidTier = tiers.some((tier) => validTierIds.includes(tier.id));
    if (hasValidTier) {
      job.log(`User has a valid Patreon tier: ${tiers.map(t => t.id).join(', ')}`);
      return true;
    }
  }

  job.log('No valid Patreon tiers found for this user');
  return false;
}


async function idempotentlySetUserPatronStatus(
  userId: string,
  isPatron: boolean
): Promise<void> {
  const pb = await getPocketBaseClient();
  const presentUser = await pb.collection('users').getOne(userId);

  // Only update if the value is actually different
  if (presentUser.patron !== isPatron) {
    await pb.collection('users').update(userId, {
      patron: isPatron
    });
  }
}

export async function syncronizePatreon(job: Job) {

  const pb = await getPocketBaseClient();
  job.log('WE GOT pb CLIENT, WOOHOO!');

  job.log(`the job '${job.name}' is running`);


  const fewMinutesAgo = subMinutes(new Date(), 1);

  const recentlyLoggedInUsers = await pb.collection('users').getFullList({
    filter: pb.filter('updated>={:since}', { since: fewMinutesAgo })
  });

  job.log(`recentlyLoggedInUsers:${JSON.stringify(recentlyLoggedInUsers)}`);

  let results = []
  for (const user of recentlyLoggedInUsers) {
    const isPatron = await getPatreonPatronStatus(job, user.patreonAccessToken);
    await idempotentlySetUserPatronStatus(user.id, isPatron);
    results.push({ user: user.id, isPatron })
  }



  return { complete: true, results };
}