var app = angular.module('autome', ['ui.router']);

app.config(['$stateProvider', '$urlRouterProvider',function($stateProvider, $urlRouterProvider) {
  
  $stateProvider
    .state('home', { 
             url: '/home',
             templateUrl: '/home.html',
             controller: 'MainCtrl',
             onEnter: ['$state', 'auth', function ($state, auth) {
                  if (!auth.isLoggedIn()) {
                    $state.go('login');
                  }
                }],
            resolve: {
              postPromise: ['arduino', function(arduino) {
                return arduino.getRCs();
              }]
             }
             
    })
    .state('login', {
              url: '/login',
              templateUrl: '/login.html',
              controller: 'AuthCtrl',
              onEnter: ['$state', 'auth', function ($state, auth) {
                if (auth.isLoggedIn()) {
                  $state.go('home');
                }
              }]
    })
    .state('register', {
                url: '/register',
                templateUrl: '/register.html',
                controller: 'AuthCtrl',
                onEnter: ['$state', 'auth', function ($state, auth) {
                  if (!auth.isLoggedIn()) {
                    $state.go('home');
                  }
                }]
    });

  $urlRouterProvider.otherwise('home');

}]);
app.factory('auth', ['$http', '$window', function ($http, $window) {
  var auth = {};

  auth.saveToken = function (token) {
    $window.localStorage['autohome-token'] = token;
  };

  auth.getToken = function () {
    return $window.localStorage['autohome-token'];
  };

  auth.isLoggedIn = function () {
    var token = auth.getToken();

    if (token) { 
      var payload = JSON.parse($window.atob(token.split('.')[1]));

      return payload.exp > Date.now() / 1000;
    } 

    return false;
  };

  auth.currentUser = function () {
    if (auth.isLoggedIn()) {
      var token = auth.getToken();
      var payload = JSON.parse($window.atob(token.split('.')[1]));

      return payload.username;
    }
  };

  auth.register = function (user) {
    return $http.post('/register', user, {
        headers: {Authorization: 'Bearer '+auth.getToken()}
      }).success(function (data) {
      auth.saveToken(data.token);
    });
  };

  auth.logIn = function (user) {
    return $http.post('/login', user).success(function (data) {
      auth.saveToken(data.token);
    });
  };

  auth.logOut = function () {
    $window.localStorage.removeItem('autohome-token');  
  };

  return auth;  
}]);

app.factory('arduino', ['$http', 'auth', function($http, auth){
    var o = {
      RCs: []
    };

    o.getRCs = function ( ) {
      return $http.get('/getRCs',{
        headers: {Authorization: 'Bearer '+auth.getToken()}
      }).success(function(data) {
        angular.copy(data, o.RCs);
      });
    }

    o.sendRC = function (RC) {  
      var code = (RC.state) ? RC.off_value : RC.on_value;
      return $http.post('/sendRC', {code}, {
        headers: {Authorization: 'Bearer '+auth.getToken()}
      }).success(function (data) {
        RC.state = (RC.state) ? false : true;
      });
    }

    o.irTest = function ( ) {
      return $http.get('/irTest',{
        headers: {Authorization: 'Bearer '+auth.getToken()}
      });
    }

    return o;
}]);

app.controller('MainCtrl', [
  '$scope', 
  'arduino', 
  function ($scope, arduino){
  
  $scope.RCs = arduino.RCs;

  $scope.sendRC = function(RC){
    arduino.sendRC(RC);
  };

  $scope.irTest = function(){
      arduino.irTest();
  };

}]);

app.controller('AuthCtrl', [
'$scope',
'$state',
'auth',
function($scope, $state, auth){
  $scope.user = {};

  $scope.register = function(){
    auth.register($scope.user).error(function(error){
      $scope.error = error;
    }).then(function(){
      $state.go('home');
    });
  };

  $scope.logIn = function(){
    auth.logIn($scope.user).error(function(error){
      $scope.error = error;
    }).then(function(){
      $state.go('home');
    });
  };
}]);

app.controller('NavCtrl', [
'$scope',
'auth',
function($scope, auth){
  $scope.isLoggedIn = auth.isLoggedIn;
  $scope.currentUser = auth.currentUser;
  $scope.logOut = auth.logOut;
}]);