import React from 'react';
import _ from 'lodash';
import ReactMDLMenu, {MenuItem} from 'react-mdl/lib/Menu';

import Button from './../../elements/Button/Button';
import PerformanceMixin from './../../mixins/PerformanceMixin';

/**
 * This component provides a context menu
 */
const ContextMenu = React.createClass({
    mixins: [PerformanceMixin],
    displayName: 'ContextMenu',

    propTypes: {
        align: React.PropTypes.string,
        valign: React.PropTypes.string,
        className: React.PropTypes.string,
        ripple: React.PropTypes.bool,
        target: React.PropTypes.string,
        tooltip: React.PropTypes.string,
    },

    getDefaultProps() {
        return {
            align: 'right',
            valign: 'bottom',
            ripple: false,
            tooltip: 'open menu',
        };
    },

    render() {
        const {children, iconName, tooltip, target, ...otherProps} = this.props;

        const menuItemsCopy = Array.isArray(children) ? children : [children];
        const menuId = target || _.uniqueId('app-contextmenu-');

        const menuItems = _.map(menuItemsCopy, (obj, idx) => {
            if (obj) {
                if (_.has(obj, 'props.className') && obj.key) {
                    return obj;
                }

                const objExtension = {};

                // add className if none exist
                if (
                    !_.has(obj, 'props.className') &&
                    _.has(obj, 'props.children')
                ) {
                    objExtension.className = `item-${_.kebabCase(
                        obj.props.children
                    )}`;
                }

                // add key
                if (!obj.key) {
                    objExtension.key = `MenuItem.${idx}`;
                }

                return Object.assign(
                    {},
                    obj,
                    objExtension.key ? {key: objExtension.key} : {key: obj.key},
                    objExtension.className
                        ? {
                              props: Object.assign({}, obj.props, {
                                  className: objExtension.className,
                              }),
                          }
                        : {props: obj.props}
                );
            }
            return null;
        });

        const menulist =
            menuItems.length > 0 ? (
                <ReactMDLMenu target={menuId} {...otherProps}>
                    {menuItems}
                </ReactMDLMenu>
            ) : (
                false
            );

        return menulist ? (
            <div className="contextmenu-container">
                <Button
                    iconName={iconName || 'menu_more'}
                    id={menuId}
                    tooltip={false}
                />
                {menulist}
            </div>
        ) : (
            false
        );
    },
});

export default {
    ContextMenu,
    MenuItem,
};