streams/Code/Module/Invite.php

<?php

namespace Code\Module;

use App;
use Code\Lib\Apps;
use Code\Web\Controller;
use Code\Lib\Navbar;
use Code\Render\Theme;


/**
 * module: invite.php
 *
 * send email invitations to join social network
 *
 */
class Invite extends Controller
{

    public function post()
    {

        if (!local_channel()) {
            return;
        }

        if (!Apps::system_app_installed(local_channel(), 'Invite')) {
            return;
        }

        check_form_security_token_redirectOnErr('/', 'send_invite');

        $max_invites = intval(get_config('system', 'max_invites'), 20);

        $current_invites = intval(get_pconfig(local_channel(), 'system', 'sent_invites'));
        if ($current_invites > $max_invites) {
            notice(t('Total invitation limit exceeded.') . EOL);
            return;
        }


        $recips = ((x($_POST, 'recipients')) ? explode("\n", $_POST['recipients']) : []);
        $message = ((x($_POST, 'message')) ? notags(trim($_POST['message'])) : '');

        $total = 0;

        if (get_config('system', 'invitation_only')) {
            $invonly = true;
            $x = get_pconfig(local_channel(), 'system', 'invites_remaining');
            if ((!$x) && (!is_site_admin())) {
                return;
            }
        }

        foreach ($recips as $recip) {
            $recip = trim($recip);
            if (!$recip) {
                continue;
            }

            if (!validate_email($recip)) {
                notice(sprintf(t('%s : Not a valid email address.'), $recip) . EOL);
                continue;
            } else {
                $nmessage = $message;
            }

            $account = App::get_account();

            $res = z_mail(
                [
                    'toEmail' => $recip,
                    'fromName' => ' ',
                    'fromEmail' => $account['account_email'],
                    'messageSubject' => t('Please join us on $Projectname'),
                    'textVersion' => $nmessage,
                ]
            );

            if ($res) {
                $total++;
                $current_invites++;
                set_pconfig(local_channel(), 'system', 'sent_invites', $current_invites);
                if ($current_invites > $max_invites) {
                    notice(t('Invitation limit exceeded. Please contact your site administrator.') . EOL);
                    return;
                }
            } else {
                notice(sprintf(t('%s : Message delivery failed.'), $recip) . EOL);
            }
        }
        notice(sprintf(tt("%d message sent.", "%d messages sent.", $total), $total) . EOL);
        return;
    }


    public function get()
    {

        if (!local_channel()) {
            notice(t('Permission denied.') . EOL);
            return;
        }

        if (!Apps::system_app_installed(local_channel(), 'Invite')) {
            //Do not display any associated widgets at this point
            App::$pdl = '';

            $o = '<b>Invite App (Not Installed):</b><br>';
            $o .= t('Send email invitations to join this network');
            return $o;
        }

        Navbar::set_selected('Invite');

        $tpl = Theme::get_template('invite.tpl');
        $invonly = false;

        if (get_config('system', 'invitation_only')) {
            $invonly = true;
            $x = get_pconfig(local_channel(), 'system', 'invites_remaining');
            if ((!$x) && (!is_site_admin())) {
                notice(t('You have no more invitations available') . EOL);
                return '';
            }
        }

        if ($invonly && ($x || is_site_admin())) {
            $invite_code = autoname(8) . rand(1000, 9999);
            $nmessage = str_replace('$invite_code', $invite_code, $message);

            $r = q(
                "INSERT INTO register (hash,created,uid,password,lang) VALUES ('%s', '%s',0,'','') ",
                dbesc($invite_code),
                dbesc(datetime_convert())
            );

            if (!is_site_admin()) {
                $x--;
                if ($x >= 0) {
                    set_pconfig(local_channel(), 'system', 'invites_remaining', $x);
                } else {
                    return;
                }
            }
        }

        $ob = App::get_observer();
        if (!$ob) {
            return $o;
        }

        $channel = App::get_channel();

        $o = replace_macros($tpl, array(
            '$form_security_token' => get_form_security_token("send_invite"),
            '$invite' => t('Send invitations'),
            '$addr_text' => t('Enter email addresses, one per line:'),
            '$msg_text' => t('Your message:'),
            '$default_message' => t('Please join my community on $Projectname.') . "\r\n" . "\r\n"
                . $linktxt
                . (($invonly) ? "\r\n" . "\r\n" . t('You will need to supply this invitation code:') . " " . $invite_code . "\r\n" . "\r\n" : '')
                . t('1. Register at any $Projectname location (they are all inter-connected)')
                . "\r\n" . "\r\n" . z_root() . '/register'
                . "\r\n" . "\r\n" . t('2. Enter my $Projectname network address into the site searchbar.')
                . "\r\n" . "\r\n" . $ob['xchan_addr'] . ' (' . t('or visit') . " " . z_root() . '/channel/' . $channel['channel_address'] . ')'
                . "\r\n" . "\r\n"
                . t('3. Click [Connect]')
                . "\r\n" . "\r\n",
            '$submit' => t('Submit')
        ));

        return $o;
    }
}