mattermost-mobile/app/screens/find_channels/quick_options/index.ts

// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

import {withDatabase, withObservables} from '@nozbe/watermelondb/react';
import {combineLatest, of as of$} from 'rxjs';
import {switchMap} from 'rxjs/operators';

import {Permissions} from '@constants';
import {observePermissionForTeam} from '@queries/servers/role';
import {observeCurrentTeam} from '@queries/servers/team';
import {observeCurrentUser} from '@queries/servers/user';

import QuickOptions from './quick_options';

import type {WithDatabaseArgs} from '@typings/database/database';

const enhanced = withObservables([], ({database}: WithDatabaseArgs) => {
    const team = observeCurrentTeam(database);

    const currentUser = observeCurrentUser(database);

    const canJoinChannels = combineLatest([currentUser, team]).pipe(
        switchMap(([u, t]) => observePermissionForTeam(database, t, u, Permissions.JOIN_PUBLIC_CHANNELS, true)),
    );

    const canCreatePublicChannels = combineLatest([currentUser, team]).pipe(
        switchMap(([u, t]) => observePermissionForTeam(database, t, u, Permissions.CREATE_PUBLIC_CHANNEL, true)),
    );

    const canCreatePrivateChannels = combineLatest([currentUser, team]).pipe(
        switchMap(([u, t]) => observePermissionForTeam(database, t, u, Permissions.CREATE_PRIVATE_CHANNEL, false)),
    );

    const canCreateChannels = combineLatest([canCreatePublicChannels, canCreatePrivateChannels]).pipe(
        switchMap(([open, priv]) => of$(open || priv)),
    );

    return {
        canCreateChannels,
        canJoinChannels,
    };
});

export default withDatabase(enhanced(QuickOptions));