const db = require('./utils/data');

const blacklistSet = 'blacklisted-packages';

function addPackage(packageName) {
  return new Promise((resolve, reject) => {
    db.sadd(blacklistSet, packageName, (error, value) => {
      if (error) {
        reject(error);
      } else {
        resolve(value === 1);
      }
    });
  });
}

function removePackage(packageName) {
  return new Promise((resolve, reject) => {
    db.srem(blacklistSet, packageName, (error, value) => {
      if (error) {
        reject(error);
      } else {
        resolve(value === 1);
      }
    });
  });
}

function removeAllPackages() {
  return new Promise((resolve, reject) => {
    db.del(blacklistSet, error => {
      if (error) {
        reject(error);
      } else {
        resolve();
      }
    });
  });
}

function getPackages() {
  return new Promise((resolve, reject) => {
    db.smembers(blacklistSet, (error, value) => {
      if (error) {
        reject(error);
      } else {
        resolve(value);
      }
    });
  });
}

function includesPackage(packageName) {
  return new Promise((resolve, reject) => {
    db.sismember(blacklistSet, packageName, (error, value) => {
      if (error) {
        reject(error);
      } else {
        resolve(value === 1);
      }
    });
  });
}

module.exports = {
  addPackage,
  removePackage,
  removeAllPackages,
  getPackages,
  includesPackage
};