"use strict";

const Config = require("../src/Config");

var loginWithWrongCredentialsShouldFail = function(username, password) {
  return new Promise((resolve, reject) => {
    Parse.User.logIn(username, password)
    .then(() => reject('login should have failed'))
    .catch(err => {
      if (err.message === 'Invalid username/password.') {
        resolve();
      } else {
        reject(err);
      }
    });
  });
};

var isAccountLockoutError = function(username, password, duration, waitTime) {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      Parse.User.logIn(username, password)
      .then(() => reject('login should have failed'))
      .catch(err => {
        if (err.message === 'Your account is locked due to multiple failed login attempts. Please try again after ' + duration + ' minute(s)') {
          resolve();
        } else {
          reject(err);
        }
      });
    }, waitTime);
  });
};

describe("Account Lockout Policy: ", () => {

  it('account should not be locked even after failed login attempts if account lockout policy is not set', done => {
    reconfigureServer({
      appName: 'unlimited',
      publicServerURL: 'http://localhost:1337/1',
    })
    .then(() => {
      var user = new Parse.User();
      user.setUsername('username1');
      user.setPassword('password');
      return user.signUp(null);
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username1', 'incorrect password 1');
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username1', 'incorrect password 2');
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username1', 'incorrect password 3');
    })
    .then(() => done())
    .catch(err => {
      fail('allow unlimited failed login attempts failed: ' + JSON.stringify(err));
      done();
    });
  });

  it('throw error if duration is set to an invalid number', done => {
    reconfigureServer({
      appName: 'duration',
      accountLockout: {
        duration: 'invalid value',
        threshold: 5
      },
      publicServerURL: "https://my.public.server.com/1"
    })
    .then(() => {
      new Config('test');
      fail('set duration to an invalid number test failed');
      done();
    })
    .catch(err => {
      if (err && err === 'Account lockout duration should be greater than 0 and less than 100000') {
        done();
      } else {
        fail('set duration to an invalid number test failed: ' + JSON.stringify(err));
        done();
      }
    });
  });

  it('throw error if threshold is set to an invalid number', done => {
    reconfigureServer({
      appName: 'threshold',
      accountLockout: {
        duration: 5,
        threshold: 'invalid number'
      },
      publicServerURL: "https://my.public.server.com/1"
    })
    .then(() => {
      new Config('test');
      fail('set threshold to an invalid number test failed');
      done();
    })
    .catch(err => {
      if (err && err === 'Account lockout threshold should be an integer greater than 0 and less than 1000') {
        done();
      } else {
        fail('set threshold to an invalid number test failed: ' + JSON.stringify(err));
        done();
      }
    });
  });

  it('throw error if threshold is < 1', done => {
    reconfigureServer({
      appName: 'threshold',
      accountLockout: {
        duration: 5,
        threshold: 0
      },
      publicServerURL: "https://my.public.server.com/1"
    })
    .then(() => {
      new Config('test');
      fail('threshold value < 1 is invalid test failed');
      done();
    })
    .catch(err => {
      if (err && err === 'Account lockout threshold should be an integer greater than 0 and less than 1000') {
        done();
      } else {
        fail('threshold value < 1 is invalid test failed: ' + JSON.stringify(err));
        done();
      }
    });
  });

  it('throw error if threshold is > 999', done => {
    reconfigureServer({
      appName: 'threshold',
      accountLockout: {
        duration: 5,
        threshold: 1000
      },
      publicServerURL: "https://my.public.server.com/1"
    })
    .then(() => {
      new Config('test');
      fail('threshold value > 999 is invalid test failed');
      done();
    })
    .catch(err => {
      if (err && err === 'Account lockout threshold should be an integer greater than 0 and less than 1000') {
        done();
      } else {
        fail('threshold value > 999 is invalid test failed: ' + JSON.stringify(err));
        done();
      }
    });
  });

  it('throw error if duration is <= 0', done => {
    reconfigureServer({
      appName: 'duration',
      accountLockout: {
        duration: 0,
        threshold: 5
      },
      publicServerURL: "https://my.public.server.com/1"
    })
    .then(() => {
      new Config('test');
      fail('duration value < 1 is invalid test failed');
      done();
    })
    .catch(err => {
      if (err && err === 'Account lockout duration should be greater than 0 and less than 100000') {
        done();
      } else {
        fail('duration value < 1 is invalid test failed: ' + JSON.stringify(err));
        done();
      }
    });
  });

  it('throw error if duration is > 99999', done => {
    reconfigureServer({
      appName: 'duration',
      accountLockout: {
        duration: 100000,
        threshold: 5
      },
      publicServerURL: "https://my.public.server.com/1"
    })
    .then(() => {
      new Config('test');
      fail('duration value > 99999 is invalid test failed');
      done();
    })
    .catch(err => {
      if (err && err === 'Account lockout duration should be greater than 0 and less than 100000') {
        done();
      } else {
        fail('duration value > 99999 is invalid test failed: ' + JSON.stringify(err));
        done();
      }
    });
  });

  it('lock account if failed login attempts are above threshold', done => {
    reconfigureServer({
      appName: 'lockout threshold',
      accountLockout: {
        duration: 1,
        threshold: 2
      },
      publicServerURL: "http://localhost:8378/1"
    })
    .then(() => {
      var user = new Parse.User();
      user.setUsername("username2");
      user.setPassword("failedLoginAttemptsThreshold");
      return user.signUp();
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username2', 'wrong password');
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username2', 'wrong password');
    })
    .then(() => {
      return isAccountLockoutError('username2', 'wrong password', 1, 1);
    })
    .then(() => {
      done();
    })
    .catch(err => {
      fail('lock account after failed login attempts test failed: ' + JSON.stringify(err));
      done();
    });
  });

  it('lock account for accountPolicy.duration minutes if failed login attempts are above threshold', done => {
    reconfigureServer({
      appName: 'lockout threshold',
      accountLockout: {
        duration: 0.05, // 0.05*60 = 3 secs
        threshold: 2
      },
      publicServerURL: "http://localhost:8378/1"
    })
    .then(() => {
      var user = new Parse.User();
      user.setUsername("username3");
      user.setPassword("failedLoginAttemptsThreshold");
      return user.signUp();
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username3', 'wrong password');
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username3', 'wrong password');
    })
    .then(() => {
      return isAccountLockoutError('username3', 'wrong password', 0.05, 1);
    })
    .then(() => {
      // account should still be locked even after 2 seconds.
      return isAccountLockoutError('username3', 'wrong password', 0.05, 2000);
    })
    .then(() => {
      done();
    })
    .catch(err => {
      fail('account should be locked for duration mins test failed: ' + JSON.stringify(err));
      done();
    });
  });

  it('allow login for locked account after accountPolicy.duration minutes', done => {
    reconfigureServer({
      appName: 'lockout threshold',
      accountLockout: {
        duration: 0.05, // 0.05*60 = 3 secs
        threshold: 2
      },
      publicServerURL: "http://localhost:8378/1"
    })
    .then(() => {
      var user = new Parse.User();
      user.setUsername("username4");
      user.setPassword("correct password");
      return user.signUp();
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username4', 'wrong password');
    })
    .then(() => {
      return loginWithWrongCredentialsShouldFail('username4', 'wrong password');
    })
    .then(() => {
      // allow locked user to login after 3 seconds with a valid userid and password
      return new Promise((resolve, reject) => {
        setTimeout(() => {
          Parse.User.logIn('username4', 'correct password')
          .then(() => resolve())
          .catch(err => reject(err));
        }, 3001);
      });
    })
    .then(() => {
      done();
    })
    .catch(err => {
      fail('allow login for locked account after accountPolicy.duration minutes test failed: ' + JSON.stringify(err));
      done();
    });
  });

})