const passport = require('passport');
const DiscordStrategy = require('passport-discord').Strategy;
const fs = require('fs');
const path = require('path');

const setupFilePath = path.join(__dirname, '../data', 'setup.json'); 
const setupData = JSON.parse(fs.readFileSync(setupFilePath, 'utf-8'));

passport.use(new DiscordStrategy({
        clientID: setupData[0].discord.clientID,
        clientSecret: setupData[0].discord.clientSecret,
        callbackURL: `http://${setupData[0].domain}/auth/discord/callback`    
      }, (accessToken, refreshToken, profile, done) => {  
      fs.readFile('user.json', 'utf8', (err, data) => {
      if (err) {
        return done(err);
      }
  
      const users = JSON.parse(data);
      const user = users.find(user => user.id === profile.id);

      if (setupData[0].discord.authorizedIDs.length > 0 && !setupData[0].discord.authorizedIDs.includes(profile.id)) {
        return done(null, false, { message: 'L\'utilisateur n\'est pas autorisé.' });
      }

      done(null, user);
    });
  }));
    
passport.serializeUser((user, done) => {
  done(null, user);
});

passport.deserializeUser((id, done) => {
  fs.readFile('/data', 'user.json', 'utf8', (err, data) => {
    if (err) {
      return done(err);
    }

    const users = JSON.parse(data);
    const user = users.find(user => user.id === id);
    done(null, user);
  });
});

module.exports = passport;