daniellmb/AQUA

/*global define*/
'use strict';

/**
 * The main controller for the app. The controller:
 * - retrieves and persist the model via the todoStorage service
 * - exposes the model to the template and provides event handlers
 */

define(['app', 'services/todoStorage'], function (app) {
    return app.controller('TodoController', ['$scope', '$location', 'todoStorage', 'filterFilter',
        function TodoController($scope, $location, todoStorage, filterFilter) {
            var todos = $scope.todos = todoStorage.get();

            $scope.newTodo = '';
            $scope.editedTodo = null;

            $scope.$watch('todos', function () {
                $scope.remainingCount = filterFilter(todos, { completed: false }).length;
                $scope.doneCount = todos.length - $scope.remainingCount;
                $scope.allChecked = !$scope.remainingCount;
                todoStorage.put(todos);
            }, true);

            if ($location.path() === '') {
                $location.path('/');
            }

            $scope.location = $location;

            $scope.$watch('location.path()', function (path) {
                $scope.statusFilter = (path === '/active') ?
                    { completed: false } : (path === '/completed') ?
                    { completed: true } : null;
            });


            $scope.addTodo = function () {
                var newTodo = $scope.newTodo.trim();
                if (!newTodo.length) {
                    return;
                }

                todos.push({
                    title: newTodo,
                    completed: false
                });

                $scope.newTodo = '';
            };


            $scope.editTodo = function (todo) {
                $scope.editedTodo = todo;
            };


            $scope.doneEditing = function (todo) {
                $scope.editedTodo = null;
                todo.title = todo.title.trim();

                if (!todo.title) {
                    $scope.removeTodo(todo);
                }
            };


            $scope.removeTodo = function (todo) {
                todos.splice(todos.indexOf(todo), 1);
            };


            $scope.clearDoneTodos = function () {
                $scope.todos = todos = todos.filter(function (val) {
                    return !val.completed;
                });
            };


            $scope.markAll = function (done) {
                todos.forEach(function (todo) {
                    todo.completed = done;
                });
            };
        }
    ]);
});