/*
Copyright 2017, 2018 New Vector 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 PropTypes from 'prop-types';
import { MatrixClient } from 'matrix-js-sdk';
import sdk from '../../../index';
import dis from '../../../dispatcher';
import AccessibleButton from '../elements/AccessibleButton';
import * as ContextualMenu from "../../structures/ContextualMenu";
import classNames from 'classnames';

export default React.createClass({
    displayName: 'GroupInviteTile',

    propTypes: {
        group: PropTypes.object.isRequired,
    },

    contextTypes: {
        matrixClient: PropTypes.instanceOf(MatrixClient),
    },

    getInitialState: function() {
        return ({
            hover: false,
            badgeHover: false,
            menuDisplayed: false,
            selected: this.props.group.groupId === null, // XXX: this needs linking to LoggedInView/GroupView state
        });
    },

    onClick: function(e) {
        dis.dispatch({
            action: 'view_group',
            group_id: this.props.group.groupId,
        });
    },

    onMouseEnter: function() {
        const state = {hover: true};
        // Only allow non-guests to access the context menu
        if (!this.context.matrixClient.isGuest()) {
            state.badgeHover = true;
        }
        this.setState(state);
    },

    onMouseLeave: function() {
        this.setState({
            badgeHover: false,
            hover: false,
        });
    },

    onContextMenu: function(e) {
        this.onBadgeClicked(e);
        e.preventDefault();
    },

    onBadgeClicked: function(e) {
        // Prevent the RoomTile onClick event firing as well
        e.stopPropagation();

        // Only allow none guests to access the context menu
        if (this.context.matrixClient.isGuest()) return;

        // If the badge is clicked, then no longer show tooltip
        if (this.props.collapsed) {
            this.setState({ hover: false });
        }

        const RoomTileContextMenu = sdk.getComponent('context_menus.GroupInviteTileContextMenu');
        const elementRect = this.refs.badge.getBoundingClientRect();

        // The window X and Y offsets are to adjust position when zoomed in to page
        const x = elementRect.right + window.pageXOffset + 3;
        const chevronOffset = 12;
        let y = (elementRect.top + (elementRect.height / 2) + window.pageYOffset);
        y = y - (chevronOffset + 8); // where 8 is half the height of the chevron

        ContextualMenu.createMenu(RoomTileContextMenu, {
            chevronOffset: chevronOffset,
            left: x,
            top: y,
            group: this.props.group,
            onFinished: () => {
                this.setState({ menuDisplayed: false });
            },
        });
        this.setState({ menuDisplayed: true });
    },

    render: function() {
        const BaseAvatar = sdk.getComponent('avatars.BaseAvatar');
        const EmojiText = sdk.getComponent('elements.EmojiText');

        const groupName = this.props.group.name || this.props.group.groupId;
        const httpAvatarUrl = this.props.group.avatarUrl ?
            this.context.matrixClient.mxcUrlToHttp(this.props.group.avatarUrl, 24, 24) : null;

        const av = <BaseAvatar name={groupName} width={24} height={24} url={httpAvatarUrl} />;

        const nameClasses = classNames({
            'mx_RoomTile_name': true,
            'mx_RoomTile_invite': this.props.isInvite,
            'mx_RoomTile_badgeShown': this.state.badgeHover || this.state.menuDisplayed,
        });

        const label = <EmojiText element="div" title={this.props.group.groupId} className={nameClasses} dir="auto">
            { groupName }
        </EmojiText>;

        const badgeEllipsis = this.state.badgeHover || this.state.menuDisplayed;
        const badgeClasses = classNames('mx_RoomSubList_badge mx_RoomSubList_badgeHighlight', {
            'mx_RoomTile_badgeButton': badgeEllipsis,
        });

        const badgeContent = badgeEllipsis ? '\u00B7\u00B7\u00B7' : '!';
        const badge = <div className={badgeClasses} ref="badge" onClick={this.onBadgeClicked}>{ badgeContent }</div>;

        let tooltip;
        if (this.props.collapsed && this.state.hover) {
            const RoomTooltip = sdk.getComponent("rooms.RoomTooltip");
            tooltip = <RoomTooltip className="mx_RoomTile_tooltip" label={groupName} dir="auto" />;
        }

        const classes = classNames('mx_RoomTile mx_RoomTile_highlight', {
            'mx_RoomTile_menuDisplayed': this.state.menuDisplayed,
            'mx_RoomTile_selected': this.state.selected,
        });

        return (
            <AccessibleButton className={classes}
                              onClick={this.onClick}
                              onMouseEnter={this.onMouseEnter}
                              onMouseLeave={this.onMouseLeave}
                              onContextMenu={this.onContextMenu}
            >
                <div className="mx_RoomTile_avatar">
                    { av }
                </div>
                <div className="mx_RoomTile_nameContainer">
                    { label }
                    { badge }
                </div>
                { tooltip }
            </AccessibleButton>
        );
    },
});