const { Strategy: DiscordStrategy } = require('passport-discord');
const User = require('../models/User');
const config = require('../../config/loader');
const domains = config.domains;

const discordLogin = async () =>
  new DiscordStrategy(
    {
      clientID: process.env.DISCORD_CLIENT_ID,
      clientSecret: process.env.DISCORD_CLIENT_SECRET,
      callbackURL: `${domains.server}${process.env.DISCORD_CALLBACK_URL}`,
      scope: ['identify', 'email'], // Request scopes
      authorizationURL: 'https://discord.com/api/oauth2/authorize?prompt=none', // Add the prompt query parameter
    },
    async (accessToken, refreshToken, profile, cb) => {
      try {
        const email = profile.email;
        const discordId = profile.id;

        const oldUser = await User.findOne({ email });
        if (oldUser) {
          return cb(null, oldUser);
        }

        let avatarURL;
        if (profile.avatar) {
          const format = profile.avatar.startsWith('a_') ? 'gif' : 'png';
          avatarURL = `https://cdn.discordapp.com/avatars/${profile.id}/${profile.avatar}.${format}`;
        } else {
          const defaultAvatarNum = Number(profile.discriminator) % 5;
          avatarURL = `https://cdn.discordapp.com/embed/avatars/${defaultAvatarNum}.png`;
        }

        const newUser = await User.create({
          provider: 'discord',
          discordId,
          username: profile.username,
          email,
          name: profile.global_name,
          avatar: avatarURL,
        });

        cb(null, newUser);
      } catch (err) {
        console.error(err);
        cb(err);
      }
    },
  );

module.exports = discordLogin;