<?php

namespace Zotlabs\Module\Admin;

use App;
use Zotlabs\Daemon\Run;

/**
 * @brief Admin Module for Channels.
 *
 */
class Channels
{

    /**
     * @brief Handle POST actions on channels admin page.
     *
     */
    public function post()
    {

        $channels = (x($_POST, 'channel') ? $_POST['channel'] : array());

        check_form_security_token_redirectOnErr('/admin/channels', 'admin_channels');

        $xor = db_getfunc('^');

        if (x($_POST, 'page_channels_block')) {
            foreach ($channels as $uid) {
                q(
                    "UPDATE channel SET channel_pageflags = ( channel_pageflags $xor %d ) where channel_id = %d",
                    intval(PAGE_CENSORED),
                    intval($uid)
                );
                Run::Summon(['Directory', $uid, 'nopush']);
            }
            notice(sprintf(tt("%s channel censored/uncensored", "%s channels censored/uncensored", count($channels)), count($channels)));
        }
        if (x($_POST, 'page_channels_code')) {
            foreach ($channels as $uid) {
                q(
                    "UPDATE channel SET channel_pageflags = ( channel_pageflags $xor %d ) where channel_id = %d",
                    intval(PAGE_ALLOWCODE),
                    intval($uid)
                );
            }
            notice(sprintf(tt("%s channel code allowed/disallowed", "%s channels code allowed/disallowed", count($channels)), count($channels)));
        }
        if (x($_POST, 'page_channels_delete')) {
            foreach ($channels as $uid) {
                channel_remove($uid, true);
            }
            notice(sprintf(tt("%s channel deleted", "%s channels deleted", count($channels)), count($channels)));
        }

        goaway(z_root() . '/admin/channels');
    }

    /**
     * @brief Generate channels admin page and handle single item operations.
     *
     * @return string with parsed HTML
     */
    public function get()
    {
        if (argc() > 2) {
            $uid = argv(3);
            $channel = q(
                "SELECT * FROM channel WHERE channel_id = %d",
                intval($uid)
            );

            if (!$channel) {
                notice(t('Channel not found') . EOL);
                goaway(z_root() . '/admin/channels');
            }

            switch (argv(2)) {
                case "delete":
                    {
                        check_form_security_token_redirectOnErr('/admin/channels', 'admin_channels', 't');
                        // delete channel
                        channel_remove($uid, true);

                        notice(sprintf(t("Channel '%s' deleted"), $channel[0]['channel_name']) . EOL);
                }
                    break;

                case "block":
                    {
                        check_form_security_token_redirectOnErr('/admin/channels', 'admin_channels', 't');
                        $pflags = $channel[0]['channel_pageflags'] ^ PAGE_CENSORED;
                        q(
                            "UPDATE channel SET channel_pageflags = %d where channel_id = %d",
                            intval($pflags),
                            intval($uid)
                        );
                        Run::Summon(['Directory', $uid, 'nopush']);

                        notice(sprintf((($pflags & PAGE_CENSORED) ? t("Channel '%s' censored") : t("Channel '%s' uncensored")), $channel[0]['channel_name'] . ' (' . $channel[0]['channel_address'] . ')') . EOL);
                }
                    break;

                case "code":
                    {
                        check_form_security_token_redirectOnErr('/admin/channels', 'admin_channels', 't');
                        $pflags = $channel[0]['channel_pageflags'] ^ PAGE_ALLOWCODE;
                        q(
                            "UPDATE channel SET channel_pageflags = %d where channel_id = %d",
                            intval($pflags),
                            intval($uid)
                        );

                        notice(sprintf((($pflags & PAGE_ALLOWCODE) ? t("Channel '%s' code allowed") : t("Channel '%s' code disallowed")), $channel[0]['channel_name'] . ' (' . $channel[0]['channel_address'] . ')') . EOL);
                }
                    break;

                default:
                    break;
            }
            goaway(z_root() . '/admin/channels');
        }

        $key = (($_REQUEST['key']) ? dbesc($_REQUEST['key']) : 'channel_id');
        $dir = 'asc';
        if (array_key_exists('dir', $_REQUEST)) {
            $dir = ((intval($_REQUEST['dir'])) ? 'asc' : 'desc');
        }

        $base = z_root() . '/admin/channels?f=';
        $odir = (($dir === 'asc') ? '0' : '1');

        /* get channels */

        $total = q("SELECT count(*) as total FROM channel where channel_removed = 0 and channel_system = 0");
        if ($total) {
            App::set_pager_total($total[0]['total']);
            App::set_pager_itemspage(100);
        }

        $channels = q(
            "SELECT * from channel where channel_removed = 0 and channel_system = 0 order by $key $dir limit %d offset %d ",
            intval(App::$pager['itemspage']),
            intval(App::$pager['start'])
        );

        if ($channels) {
            for ($x = 0; $x < count($channels); $x++) {
                if ($channels[$x]['channel_pageflags'] & PAGE_CENSORED) {
                    $channels[$x]['blocked'] = true;
                } else {
                    $channels[$x]['blocked'] = false;
                }

                if ($channels[$x]['channel_pageflags'] & PAGE_ALLOWCODE) {
                    $channels[$x]['allowcode'] = true;
                } else {
                    $channels[$x]['allowcode'] = false;
                }

                $channels[$x]['channel_link'] = z_root() . '/channel/' . $channels[$x]['channel_address'];
            }
        }

        call_hooks('admin_channels', $channels);

        $o = replace_macros(get_markup_template('admin_channels.tpl'), [
            // strings //
            '$title' => t('Administration'),
            '$page' => t('Channels'),
            '$submit' => t('Submit'),
            '$select_all' => t('select all'),
            '$delete' => t('Delete'),
            '$block' => t('Censor'),
            '$unblock' => t('Uncensor'),
            '$code' => t('Allow Code'),
            '$uncode' => t('Disallow Code'),
            '$h_channels' => t('Channel'),
            '$base' => $base,
            '$odir' => $odir,
            '$th_channels' => array(
                [t('UID'), 'channel_id'],
                [t('Name'), 'channel_name'],
                [t('Address'), 'channel_address']),

            '$confirm_delete_multi' => t('Selected channels will be deleted!\n\nEverything that was posted in these channels on this site will be permanently deleted!\n\nAre you sure?'),
            '$confirm_delete' => t('The channel {0} will be deleted!\n\nEverything that was posted in this channel on this site will be permanently deleted!\n\nAre you sure?'),

            '$form_security_token' => get_form_security_token('admin_channels'),

            // values //
            '$baseurl' => z_root(),
            '$channels' => $channels,
        ]);
        $o .= paginate($a);

        return $o;
    }
}