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/*******************************************************************************
 * Copyright (c) 2015-2018 Skymind, Inc.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 which is available at
 * https://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 ******************************************************************************/

/*jshint quotmark:false */
/*jshint white:false */
/*jshint trailing:false */
/*jshint newcap:false */
/*global React, Router*/
var app = app || {};

(function () {
	'use strict';

	app.ALL_TODOS = 'all';
	app.ACTIVE_TODOS = 'active';
	app.COMPLETED_TODOS = 'completed';
	var TodoFooter = app.TodoFooter;
	var TodoItem = app.TodoItem;

	var ENTER_KEY = 13;

	var TodoApp = React.createClass({
		getInitialState: function () {
			return {
				nowShowing: app.ALL_TODOS,
				editing: null
			};
		},

		componentDidMount: function () {
			var setState = this.setState;
			var router = Router({
				'/': setState.bind(this, {nowShowing: app.ALL_TODOS}),
				'/active': setState.bind(this, {nowShowing: app.ACTIVE_TODOS}),
				'/completed': setState.bind(this, {nowShowing: app.COMPLETED_TODOS})
			});
			router.init('/');
		},

		handleNewTodoKeyDown: function (event) {
			if (event.which !== ENTER_KEY) {
				return;
			}

			event.preventDefault();

			var val = this.refs.newField.getDOMNode().value.trim();

			if (val) {
				this.props.model.addTodo(val);
				this.refs.newField.getDOMNode().value = '';
			}
		},

		toggleAll: function (event) {
			var checked = event.target.checked;
			this.props.model.toggleAll(checked);
		},

		toggle: function (todoToToggle) {
			this.props.model.toggle(todoToToggle);
		},

		destroy: function (todo) {
			this.props.model.destroy(todo);
		},

		edit: function (todo) {
			this.setState({editing: todo.id});
		},

		save: function (todoToSave, text) {
			this.props.model.save(todoToSave, text);
			this.setState({editing: null});
		},

		cancel: function () {
			this.setState({editing: null});
		},

		clearCompleted: function () {
			this.props.model.clearCompleted();
		},

		render: function () {
			var footer;
			var main;
			var todos = this.props.model.todos;

			var shownTodos = todos.filter(function (todo) {
				switch (this.state.nowShowing) {
				case app.ACTIVE_TODOS:
					return !todo.completed;
				case app.COMPLETED_TODOS:
					return todo.completed;
				default:
					return true;
				}
			}, this);

			var todoItems = shownTodos.map(function (todo) {
				return (
					
				);
			}, this);

			var activeTodoCount = todos.reduce(function (accum, todo) {
				return todo.completed ? accum : accum + 1;
			}, 0);

			var completedCount = todos.length - activeTodoCount;

			if (activeTodoCount || completedCount) {
				footer =
					;
			}

			if (todos.length) {
				main = (
					
						
						
							{todoItems}
						
					
				);
			}

			return (
				
					
						todos
						
					
					{main}
					{footer}
				
			);
		}
	});

	var model = new app.TodoModel('react-todos');

	function render() {
		React.render(
			,
			document.getElementById('todoapp')
		);
	}

	model.subscribe(render);
	render();
})();