mattermost-mobile/app/screens/more_channels/index.js

// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.

import {bindActionCreators} from 'redux';
import {connect} from 'react-redux';
import {createSelector} from 'reselect';

import {General} from 'mattermost-redux/constants';
import {getChannels, joinChannel, searchChannels} from 'mattermost-redux/actions/channels';
import {getChannelsInCurrentTeam, getMyChannelMemberships} from 'mattermost-redux/selectors/entities/channels';
import {getCurrentUserRoles} from 'mattermost-redux/selectors/entities/users';
import {showCreateOption} from 'mattermost-redux/utils/channel_utils';
import {isAdmin, isSystemAdmin} from 'mattermost-redux/utils/user_utils';

import {handleSelectChannel, setChannelDisplayName} from 'app/actions/views/channel';
import {getTheme} from 'mattermost-redux/selectors/entities/preferences';

import MoreChannels from './more_channels';

const joinableChannels = createSelector(
    getChannelsInCurrentTeam,
    getMyChannelMemberships,
    (channels, myMembers) => {
        return channels.filter((c) => {
            return (!myMembers[c.id] && c.type === General.OPEN_CHANNEL);
        });
    }
);

function mapStateToProps(state) {
    const {currentUserId} = state.entities.users;
    const {currentTeamId} = state.entities.teams;
    const {getChannels: requestStatus} = state.requests.channels;
    const {config, license} = state.entities.general;
    const roles = getCurrentUserRoles(state);
    const channels = joinableChannels(state);

    return {
        canCreateChannels: showCreateOption(config, license, General.OPEN_CHANNEL, isAdmin(roles), isSystemAdmin(roles)),
        currentUserId,
        currentTeamId,
        channels,
        theme: getTheme(state),
        requestStatus,
    };
}

function mapDispatchToProps(dispatch) {
    return {
        actions: bindActionCreators({
            handleSelectChannel,
            joinChannel,
            getChannels,
            searchChannels,
            setChannelDisplayName,
        }, dispatch),
    };
}

export default connect(mapStateToProps, mapDispatchToProps)(MoreChannels);