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<?php
namespace Zotlabs\Module;

use App;
use Zotlabs\Lib\AccessList;
use Zotlabs\Lib\Apps;
use Zotlabs\Lib\Config;
use Zotlabs\Lib\Libsync;
use Zotlabs\Web\Controller;

class Group extends Controller {

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

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

		App::$profile_uid = local_channel();

		nav_set_selected('Privacy Groups');
	}

	function post() {

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

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

		if((argc() == 2) && (argv(1) === 'new')) {
			check_form_security_token_redirectOnErr('/group/new', 'group_edit');

			$name = notags(trim($_POST['groupname']));
			$public = intval($_POST['public']);
			$r = AccessList::add(local_channel(),$name,$public);
			$group_hash = $r;

			if($r) {
				info( t('Privacy group created.') . EOL );
			}
			else {
				notice( t('Could not create privacy group.') . EOL );
			}
		}

		if((argc() == 2) && (intval(argv(1)))) {
			check_form_security_token_redirectOnErr('/group', 'group_edit');

			$r = q("SELECT * FROM pgrp WHERE id = %d AND uid = %d LIMIT 1",
				intval(argv(1)),
				intval(local_channel())
			);
			if(! $r) {
				notice( t('Privacy group not found.') . EOL );
				goaway(z_root() . '/connections');

			}
			$group = $r[0];
			$groupname = notags(trim($_POST['groupname']));
			$group_hash = $group['hash'];
			$public = intval($_POST['public']);

			$hookinfo = [ 'pgrp_extras' => '', 'group'=>$group['id'] ];
			call_hooks('privacygroup_extras_post',$hookinfo);

			if((strlen($groupname))  && (($groupname != $group['gname']) || ($public != $group['visible']))) {
				$r = q("UPDATE pgrp SET gname = '%s', visible = %d  WHERE uid = %d AND id = %d",
					dbesc($groupname),
					intval($public),
					intval(local_channel()),
					intval($group['id'])
				);
				if($r)
					info( t('Privacy group updated.') . EOL );
			}
		}

		$channel = App::get_channel();

		$default_group = ((isset($_POST['set_default_group'])) ? $group_hash : (($channel['channel_default_group'] === $group_hash) ? '' : $channel['channel_default_group']));
		$default_acl = ((isset($_POST['set_default_acl'])) ? '<' . $group_hash . '>' : (($channel['channel_allow_gid'] === '<' . $group_hash . '>') ? '' : $channel['channel_allow_gid']));

		q("update channel set channel_default_group = '%s', channel_allow_gid = '%s'
			where channel_id = %d",
			dbesc($default_group),
			dbesc($default_acl),
			intval(local_channel())
		);

		Libsync::build_sync_packet(local_channel(),null,true);

		goaway(z_root() . '/group/' . argv(1) . ((argv(2)) ? '/' . argv(2) : ''));

		return;
	}

	function get() {

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

		if(! Apps::system_app_installed(local_channel(), 'Privacy Groups')) {
			//Do not display any associated widgets at this point
			App::$pdl = '';
			$papp = Apps::get_papp('Privacy Groups');
			return Apps::app_render($papp, 'module');
		}

		logger('mod_group: ' . App::$cmd,LOGGER_DEBUG);

		$change = false;

		// Switch to text mode interface if we have more than 'n' contacts or group members
		$switchtotext = get_pconfig(local_channel(),'system','groupedit_image_limit');
		if($switchtotext === false)
			$switchtotext = Config::Get('system','groupedit_image_limit');
		if($switchtotext === false)
			$switchtotext = 400;


		if((argc() == 1) || ((argc() == 2) && (argv(1) === 'new'))) {

			$hookinfo = [ 'pgrp_extras' => '', 'group'=>argv(1) ];
			call_hooks ('privacygroup_extras',$hookinfo);
			$pgrp_extras = $hookinfo['pgrp_extras'];

			$is_default_acl = ['set_default_acl', t('Post to this group by default'), 0, '', [t('No'), t('Yes')]];
			$is_default_group = ['set_default_group', t('Add new contacts to this group by default'), 0, '', [t('No'), t('Yes')]];


			$tpl = get_markup_template('privacy_groups.tpl');
			$o = replace_macros($tpl, [
				'$title' => t('Privacy Groups'),

				// new group form
				'$gname' => array('groupname',t('Privacy group name')),
				'$public' => array('public',t('Members are visible to other channels'), 0, '', [t('No'), t('Yes')]),
				'$pgrp_extras' => $pgrp_extras,
				'$form_security_token' => get_form_security_token("group_edit"),
				'$submit' => t('Submit'),
				'$is_default_acl' => $is_default_acl,
				'$is_default_group' => $is_default_group,
			]);

			return $o;

		}

		$context = array('$submit' => t('Submit'));
		$tpl = get_markup_template('group_edit.tpl');

		if((argc() == 3) && (argv(1) === 'drop')) {
			check_form_security_token_redirectOnErr('/group', 'group_drop', 't');

			if(intval(argv(2))) {
				$r = q("SELECT gname FROM pgrp WHERE id = %d AND uid = %d LIMIT 1",
					intval(argv(2)),
					intval(local_channel())
				);
				if($r)
					$result = AccessList::remove(local_channel(),$r[0]['gname']);
				if($result) {
					$hookinfo = [ 'pgrp_extras' => '', 'group' => argv(2) ];
					call_hooks ('privacygroup_extras_drop',$hookinfo);
					info( t('Privacy group removed.') . EOL);
				}
				else
					notice( t('Unable to remove privacy group.') . EOL);
			}
			goaway(z_root() . '/group');
			// NOTREACHED
		}


		if((argc() > 2) && intval(argv(1)) && argv(2)) {

			check_form_security_token_ForbiddenOnErr('group_member_change', 't');

			$r = q("SELECT abook_xchan from abook left join xchan on abook_xchan = xchan_hash where abook_xchan = '%s' and abook_channel = %d and xchan_deleted = 0 and abook_self = 0 and abook_blocked = 0 and abook_pending = 0 limit 1",
				dbesc(base64url_decode(argv(2))),
				intval(local_channel())
			);
			if(count($r))
				$change = base64url_decode(argv(2));

		}

		if((argc() > 1) && (intval(argv(1)))) {

			require_once('include/acl_selectors.php');
			$r = q("SELECT * FROM pgrp WHERE id = %d AND uid = %d AND deleted = 0 LIMIT 1",
				intval(argv(1)),
				intval(local_channel())
			);
			if(! $r) {
				notice( t('Privacy group not found.') . EOL );
				goaway(z_root() . '/connections');
			}
			$group = $r[0];


			$members = AccessList::members(local_channel(), $group['id']);

			$preselected = array();
			if(count($members))	{
				foreach($members as $member)
					if(! in_array($member['xchan_hash'],$preselected))
						$preselected[] = $member['xchan_hash'];
			}

			if($change) {

				if(in_array($change,$preselected)) {
					AccessList::member_remove(local_channel(),$group['gname'],$change);
				}
				else {
					AccessList::member_add(local_channel(),$group['gname'],$change);
				}

				$members = AccessList::members(local_channel(), $group['id']);

				$preselected = array();
				if(count($members))	{
					foreach($members as $member)
						$preselected[] = $member['xchan_hash'];
				}
			}

			$hookinfo = [ 'pgrp_extras' => '', 'group'=>$group['id'] ];
			call_hooks ('privacygroup_extras',$hookinfo);
			$pgrp_extras = $hookinfo['pgrp_extras'];

			$context = $context + array(
				'$title' => sprintf(t('Privacy Group: %s'), $group['gname']),
				'$details_label' => t('Edit'),
				'$gname' => array('groupname',t('Privacy group name: '),$group['gname'], ''),
				'$gid' => $group['id'],
				'$drop' => $drop_txt,
				'$public' => array('public',t('Members are visible to other channels'), $group['visible'], '', [t('No'), t('Yes')]),
				'$form_security_token_edit' => get_form_security_token('group_edit'),
				'$delete' => t('Delete'),
				'$form_security_token_drop' => get_form_security_token("group_drop"),
				'$pgrp_extras' => $pgrp_extras,
			);

		}

		if(! isset($group))
			return;

		$groupeditor = array(
			'label_members' => t('Group members'),
			'members' => array(),
			'label_contacts' => t('Not in this group'),
			'contacts' => array(),
		);

		$sec_token = addslashes(get_form_security_token('group_member_change'));
		$textmode = (($switchtotext && (count($members) > $switchtotext)) ? true : 'card');
		foreach($members as $member) {
			if($member['xchan_url']) {
				$member['archived'] = (intval($member['abook_archived']) ? true : false);
				$member['click'] = 'groupChangeMember(' . $group['id'] . ',\'' . base64url_encode($member['xchan_hash']) . '\',\'' . $sec_token . '\'); return false;';
				$groupeditor['members'][] = micropro($member,true,'mpgroup', $textmode);
			}
			else
				AccessList::member_remove(local_channel(),$group['gname'],$member['xchan_hash']);
		}

		$r = q("SELECT abook.*, xchan.* FROM abook left join xchan on abook_xchan = xchan_hash WHERE abook_channel = %d AND abook_self = 0 and abook_blocked = 0 and abook_pending = 0 and xchan_deleted = 0 order by xchan_name asc",
			intval(local_channel())
		);

		if(count($r)) {
			$textmode = (($switchtotext && (count($r) > $switchtotext)) ? true : 'card');
			foreach($r as $member) {
				if(! in_array($member['xchan_hash'],$preselected)) {
					$member['archived'] = (intval($member['abook_archived']) ? true : false);
					$member['click'] = 'groupChangeMember(' . $group['id'] . ',\'' . base64url_encode($member['xchan_hash']) . '\',\'' . $sec_token . '\'); return false;';
					$groupeditor['contacts'][] = micropro($member,true,'mpall', $textmode);
				}
			}
		}

		$context['$groupeditor'] = $groupeditor;
		$context['$desc'] = t('Click a channel to toggle membership');
		$context['$pgrp_extras'] = $pgrp_extras;

		$channel = App::get_channel();

		$context['$is_default_acl'] = ['set_default_acl', t('Post to this group by default'), intval($group['hash'] === trim($channel['channel_allow_gid'], '<>')), '', [t('No'), t('Yes')]];
		$context['$is_default_group'] = ['set_default_group', t('Add new contacts to this group by default'), intval($group['hash'] === $channel['channel_default_group']), '', [t('No'), t('Yes')]];


		if($change) {
			$tpl = get_markup_template('groupeditor.tpl');
			echo replace_macros($tpl, $context);
			killme();
		}

		return replace_macros($tpl, $context);

	}


}