*
 * Module dependencies
 */

var User = require('../models/user')
  , UserValidator = require('../validators/user-validator')
  , Promise = require('everyauth').Promise;

//Everyauth configuration
module.exports = function(everyauth, repository){

    var validator = new UserValidator(repository);

    everyauth.everymodule.logoutPath('/user/logout');
    everyauth.everymodule.logoutRedirectPath('/');
    everyauth.everymodule.findUserById( function (userId, callback) {
      repository.get(userId, callback);
      // callback has the signature, function (err, user) {...}
    });
    everyauth.password
        .getLoginPath('/user/login') //Uri of path to login page
        .postLoginPath('/user/login') //Uri of path to login page form submission
        .loginView('user/login.jade')
        .loginLocals({
          title: 'Login'
        })
        .authenticate(function(login, password){
            var promise = this.Promise();
            validator.validateLoginForm(login, password, function(error){
                if(error) promise.fulfill(error);

                repository.get(login, function(error, user){
                    //Fail the promise if we get an error or can't find the user
                   if(error) return promise.fail(error);
                   if(!user) return promise.fulfill(['user _'+ login + '_ does not exist.']);
                   User.verifyPassword(user.password, user.salt, password, function(error){
                        //Fail if we get an error during password validation
                       if(error) return promise.fail(error);
                       //Otherwise, we can fulfill our promise
                       promise.fulfill(user);
                   });
                });
            });

            return promise;
        })
        .loginSuccessRedirect('/')
        .getRegisterPath('/user/register') //Uri of path to registration
        .postRegisterPath('/user/register') //Uri of path for registration form submission
        .registerView('user/register.jade')
        .registerLocals({
          title: 'Register'
        })
        .extractExtraRegistrationParams(function(req){
          return{
            email:req.body.email,
            confirmPassword:req.body.confirmPassword
          };
        })
        .validateRegistration(function(newUserAttributes){
            var promise = this.Promise();
            validator.validateRegistrationForm(convertNewUserAttributes(newUserAttributes), function(error){
              if(error) return promise.fulfill(error);
              promise.fulfill();
            });

            return promise;
        })
        .registerUser( function (newUserAttributes) {
          var promise = this.Promise();
          repository.save(convertToUserObject(newUserAttributes), function(error, data){
            if(error) return promise.fail(error);
            if(!data) return promise.fulfill(['Unable to save registration']);
            promise.fulfill(data);
          });
          return promise;
        })
        .registerSuccessRedirect('/'); // Where to redirect to after a successful registration
};

function convertNewUserAttributes(newUserAttributes){
  return {username:newUserAttributes.login, email:newUserAttributes.email, password:newUserAttributes.password, confirmPassword:newUserAttributes.confirmPassword};
}

function convertToUserObject(newUserAttributes){
 var user = new User(newUserAttributes.login, newUserAttributes.email, newUserAttributes.password);
 user.password = User.encryptPassword(user.password, user.salt);
 return user;
}