import config from "./config.ts";
import { getUserByEmail } from "./utils/firebase.ts";
import { insertObject, newPostgres, updateObject } from "./utils/postgres.ts";
import { getAllActiveSubscriptions, getAllCustomers } from "./utils/stripe.ts";
import { Client as DiscordClient, IntentsBitField } from "discord.js";

let lastSubs = "";
let currentSubs = "";

const postgres2 = newPostgres();

// set up the Discord admin bot
const discordBot = new DiscordClient({
  intents: [IntentsBitField.Flags.Guilds, IntentsBitField.Flags.GuildMembers],
});
if (config.DISCORD_ADMIN_BOT_TOKEN) {
  discordBot.login(config.DISCORD_ADMIN_BOT_TOKEN);
  // discordBot.once('ready', () => {
  //   console.log(`Discord Bot "${discordBot?.user?.username}" ready`);
  // });
}
if (process.env.NODE_ENV === "development") {
  setTimeout(syncSubscribers, 1000);
}

setInterval(syncSubscribers, 60 * 1000);

async function syncSubscribers() {
  if (!config.STRIPE_SECRET_KEY || !config.FIREBASE_ADMIN_SDK_CONFIG) {
    return;
  }
  console.time("syncSubscribers");
  // Fetch subs, customers from stripe
  const [subs, customers] = await Promise.all([
    getAllActiveSubscriptions(),
    getAllCustomers(),
  ]);

  const emailMap = new Map();
  customers.forEach((cust) => {
    emailMap.set(cust.id, cust.email);
  });

  console.log("%s subs in Stripe", subs.length);

  const uidMap = new Map();
  for (let i = 0; i < subs.length; i += 50) {
    // Batch customers and fetch firebase data
    const batch = subs.slice(i, i + 50);
    const fbUsers = await Promise.all(
      batch
        .map((sub) =>
          emailMap.get(sub.customer)
            ? getUserByEmail(emailMap.get(sub.customer))
            : null,
        )
        .filter(Boolean),
    );
    fbUsers.forEach((user) => {
      uidMap.set(user?.email, user?.uid);
    });
  }

  let noUID = 0;
  // Create sub objects
  let result = subs
    .map((sub) => {
      let uid = uidMap.get(emailMap.get(sub.customer));
      if (!uid) {
        uid = emailMap.get(sub.customer);
        noUID += 1;
      }
      return {
        customerId: sub.customer,
        email: emailMap.get(sub.customer),
        status: sub.status,
        uid,
      };
    })
    .filter((sub) => sub.uid);
  console.log("%s subs to insert", result.length);
  console.log("%s subs do not have UID, using email", noUID);

  const newResult = result.filter(
    (sub, index) =>
      index === result.findIndex((other) => sub.uid === other.uid),
  );
  console.log("%s deduped subs to insert", newResult.length);
  if (result.length !== newResult.length) {
    // Log the difference
    console.log(result.filter((x) => !newResult.includes(x)));
  }
  result = newResult;

  currentSubs = result
    .map((sub) => sub.uid)
    .sort()
    .join();

  // Upsert to DB
  // console.log(result);
  if (currentSubs !== lastSubs) {
    try {
      await postgres2?.query("BEGIN TRANSACTION");
      await postgres2?.query("DELETE FROM subscriber");
      await postgres2?.query('UPDATE room SET "isSubRoom" = false');
      for (let row of result) {
        await insertObject(postgres2, "subscriber", row);
        await updateObject(
          postgres2,
          "room",
          { isSubRoom: true },
          { owner: row.uid },
        );
      }
      await postgres2?.query("COMMIT");
      lastSubs = currentSubs;
    } catch (e) {
      console.error(e);
      await postgres2?.query("ROLLBACK");
    }
  }
  if (
    discordBot.isReady() &&
    config.DISCORD_ADMIN_BOT_SERVER_ID &&
    config.DISCORD_ADMIN_BOT_SUB_ROLE_ID
  ) {
    console.log("setting discord roles");
    // Update the sub status of users in Discord
    // Join the current subs with linked accounts
    const guild = discordBot.guilds.cache.get(
      config.DISCORD_ADMIN_BOT_SERVER_ID,
    );
    const role = guild?.roles.cache.get(config.DISCORD_ADMIN_BOT_SUB_ROLE_ID);
    const toUpdate = (
      await postgres2.query(
        `SELECT la.accountid from subscriber JOIN link_account la ON subscriber.uid = la.uid WHERE la.kind = 'discord'`,
      )
    ).rows;
    console.log("%s users to set sub role", toUpdate.length);
    for (let row of toUpdate) {
      try {
        const user = await guild?.members.fetch(row.accountid);
        if (user && role) {
          console.log("assigning role %s to user %s", role, user.id);

          await user.roles.add(role);
        }
      } catch (e: any) {
        console.log(e.message);
      }
    }
  }

  console.timeEnd("syncSubscribers");
}