/*
Copyright 2017 Vector Creations Ltd

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://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.
*/

import React from 'react';
import classNames from 'classnames';
import sdk from 'matrix-react-sdk';
import { formatCount } from 'matrix-react-sdk/lib/utils/FormattingUtils';
import AccessibleButton from 'matrix-react-sdk/lib/components/views/elements/AccessibleButton';

module.exports = React.createClass({
    displayName: 'RoomSubListHeader',

    propTypes: {
        label: React.PropTypes.string.isRequired,
        tagName: React.PropTypes.string,
        roomCount: React.PropTypes.oneOfType([
            React.PropTypes.string,
            React.PropTypes.number
        ]),
        collapsed: React.PropTypes.bool.isRequired, // is LeftPanel collapsed?
        incomingCall: React.PropTypes.object,
        isIncomingCallRoom: React.PropTypes.bool,
        roomNotificationCount: React.PropTypes.array,
        hidden: React.PropTypes.bool,
        onClick: React.PropTypes.func,
        onHeaderClick: React.PropTypes.func,
        headerItems: React.PropTypes.node, // content shown in the sublist header
    },

    getDefaultProps: function() {
        return {
            onHeaderClick: function() {}, // NOP
        };
    },

    componentWillMount: function() {
        // constantTimeDispatcher.register("RoomSubList.refreshHeader", this.props.tagName, this.onRefresh);
    },

    componentWillUnmount: function() {
        // constantTimeDispatcher.unregister("RoomSubList.refreshHeader", this.props.tagName, this.onRefresh);
    },

    // onRefresh: function() {
    //     this.forceUpdate();
    // },

    render: function() {
        const TintableSvg = sdk.getComponent("elements.TintableSvg");

        const subListNotifications = this.props.roomNotificationCount;
        const subListNotifCount = subListNotifications[0];
        const subListNotifHighlight = subListNotifications[1];

        const chevronClasses = classNames({
            'mx_RoomSubList_chevron': true,
            'mx_RoomSubList_chevronRight': this.props.hidden,
            'mx_RoomSubList_chevronDown': !this.props.hidden,
        });

        const badgeClasses = classNames({
            'mx_RoomSubList_badge': true,
            'mx_RoomSubList_badgeHighlight': subListNotifHighlight,
        });

        let badge;
        if (subListNotifCount > 0) {
            badge = <div className={badgeClasses}>{ formatCount(subListNotifCount) }</div>;
        } else if (subListNotifHighlight) {
            badge = <div className={badgeClasses}>!</div>;   
        }

        // When collapsed, allow a long hover on the header to show user
        // the full tag name and room count
        let title;
        const roomCount = this.props.roomCount;
        if (this.props.collapsed) {
            title = this.props.label;
            if (roomCount !== '') {
                title += " [" + roomCount + "]";
            }
        }

        let incomingCall;
        if (this.props.isIncomingCallRoom) {
            const IncomingCallBox = sdk.getComponent("voip.IncomingCallBox");
            incomingCall = <IncomingCallBox className="mx_RoomSubList_incomingCall" incomingCall={ this.props.incomingCall }/>;
        }

        return (
            <div className="mx_RoomSubList_labelContainer" title={ title } ref="header">
                <AccessibleButton onClick={ this.props.onClick } className="mx_RoomSubList_label" tabIndex="0">
                    { this.props.collapsed ? '' : this.props.label }
                    {this.props.headerItems}
                    <div className="mx_RoomSubList_roomCount">{ roomCount }</div>
                    <div className={chevronClasses}></div>
                    { badge }
                </AccessibleButton>
                { incomingCall }
            </div>
        );
    },
});