<?php
/**
 * @file mod/profile.php
 */

use Friendica\App;
use Friendica\Content\Nav;
use Friendica\Content\Widget;
use Friendica\Core\ACL;
use Friendica\Core\Addon;
use Friendica\Core\Config;
use Friendica\Core\L10n;
use Friendica\Core\PConfig;
use Friendica\Core\System;
use Friendica\Database\DBM;
use Friendica\Model\Group;
use Friendica\Model\Item;
use Friendica\Model\Profile;
use Friendica\Module\Login;
use Friendica\Protocol\DFRN;
use Friendica\Util\DateTimeFormat;

function profile_init(App $a)
{
	if (!x($a->page, 'aside')) {
		$a->page['aside'] = '';
	}

	if ($a->argc > 1) {
		$which = htmlspecialchars($a->argv[1]);
	} else {
		$r = q("SELECT `nickname` FROM `user` WHERE `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 ORDER BY RAND() LIMIT 1");
		if (DBM::is_result($r)) {
			goaway(System::baseUrl() . '/profile/' . $r[0]['nickname']);
		} else {
			logger('profile error: mod_profile ' . $a->query_string, LOGGER_DEBUG);
			notice(L10n::t('Requested profile is not available.') . EOL);
			$a->error = 404;
			return;
		}
	}

	$profile = 0;
	if (local_user() && $a->argc > 2 && $a->argv[2] === 'view') {
		$which = $a->user['nickname'];
		$profile = htmlspecialchars($a->argv[1]);
	} else {
		DFRN::autoRedir($a, $which);
	}

	Profile::load($a, $which, $profile);

	$blocked   = !local_user() && !remote_user() && Config::get('system', 'block_public');
	$userblock = !local_user() && !remote_user() && $a->profile['hidewall'];

	if (x($a->profile, 'page-flags') && $a->profile['page-flags'] == PAGE_COMMUNITY) {
		$a->page['htmlhead'] .= '<meta name="friendica.community" content="true" />';
	}

	if (x($a->profile, 'openidserver')) {
		$a->page['htmlhead'] .= '<link rel="openid.server" href="' . $a->profile['openidserver'] . '" />' . "\r\n";
	}

	if (x($a->profile, 'openid')) {
		$delegate = strstr($a->profile['openid'], '://') ? $a->profile['openid'] : 'https://' . $a->profile['openid'];
		$a->page['htmlhead'] .= '<link rel="openid.delegate" href="' . $delegate . '" />' . "\r\n";
	}

	// site block
	if (!$blocked && !$userblock) {
		$keywords = str_replace(['#', ',', ' ', ',,'], ['', ' ', ',', ','], defaults($a->profile, 'pub_keywords', ''));
		if (strlen($keywords)) {
			$a->page['htmlhead'] .= '<meta name="keywords" content="' . $keywords . '" />' . "\r\n";
		}
	}

	$a->page['htmlhead'] .= '<meta name="dfrn-global-visibility" content="' . ($a->profile['net-publish'] ? 'true' : 'false') . '" />' . "\r\n";
	$a->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . System::baseUrl() . '/dfrn_poll/' . $which . '" title="' . L10n::t('%s\'s timeline', $a->profile['username']) . '"/>' . "\r\n";
	$a->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . System::baseUrl() . '/feed/' . $which . '/" title="' . L10n::t('%s\'s posts', $a->profile['username']) . '"/>' . "\r\n";
	$a->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . System::baseUrl() . '/feed/' . $which . '/comments" title="' . L10n::t('%s\'s comments', $a->profile['username']) . '"/>' . "\r\n";
	$a->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . System::baseUrl() . '/feed/' . $which . '/activity" title="' . L10n::t('%s\'s timeline', $a->profile['username']) . '"/>' . "\r\n";
	$uri = urlencode('acct:' . $a->profile['nickname'] . '@' . $a->get_hostname() . ($a->path ? '/' . $a->path : ''));
	$a->page['htmlhead'] .= '<link rel="lrdd" type="application/xrd+xml" href="' . System::baseUrl() . '/xrd/?uri=' . $uri . '" />' . "\r\n";
	header('Link: <' . System::baseUrl() . '/xrd/?uri=' . $uri . '>; rel="lrdd"; type="application/xrd+xml"', false);

	$dfrn_pages = ['request', 'confirm', 'notify', 'poll'];
	foreach ($dfrn_pages as $dfrn) {
		$a->page['htmlhead'] .= "<link rel=\"dfrn-{$dfrn}\" href=\"" . System::baseUrl() . "/dfrn_{$dfrn}/{$which}\" />\r\n";
	}
	$a->page['htmlhead'] .= '<link rel="dfrn-poco" href="' . System::baseUrl() . "/poco/{$which}\" />\r\n";
}

function profile_content(App $a, $update = 0)
{
	$category = $datequery = $datequery2 = '';

	if ($a->argc > 2) {
		for ($x = 2; $x < $a->argc; $x ++) {
			if (is_a_date_arg($a->argv[$x])) {
				if ($datequery) {
					$datequery2 = escape_tags($a->argv[$x]);
				} else {
					$datequery = escape_tags($a->argv[$x]);
				}
			} else {
				$category = $a->argv[$x];
			}
		}
	}

	if (!x($category)) {
		$category = defaults($_GET, 'category', '');
	}

	$hashtags = defaults($_GET, 'tag', '');

	if (Config::get('system', 'block_public') && !local_user() && !remote_user()) {
		return Login::form();
	}

	require_once 'include/security.php';
	require_once 'include/conversation.php';
	require_once 'include/items.php';

	$groups = [];

	$tab = 'posts';
	$o = '';

	if ($update) {
		// Ensure we've got a profile owner if updating.
		$a->profile['profile_uid'] = $update;
	} elseif ($a->profile['profile_uid'] == local_user()) {
		Nav::setSelected('home');
	}

	$contact = null;
	$remote_contact = false;

	$contact_id = 0;

	if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
		foreach ($_SESSION['remote'] as $v) {
			if ($v['uid'] == $a->profile['profile_uid']) {
				$contact_id = $v['cid'];
				break;
			}
		}
	}

	if ($contact_id) {
		$groups = Group::getIdsByContactId($contact_id);
		$r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
			intval($contact_id),
			intval($a->profile['profile_uid'])
		);
		if (DBM::is_result($r)) {
			$contact = $r[0];
			$remote_contact = true;
		}
	}

	if (!$remote_contact) {
		if (local_user()) {
			$contact_id = $_SESSION['cid'];
			$contact = $a->contact;
		}
	}

	$is_owner = local_user() == $a->profile['profile_uid'];
	$last_updated_key = "profile:" . $a->profile['profile_uid'] . ":" . local_user() . ":" . remote_user();

	if (x($a->profile, 'hidewall') && !$is_owner && !$remote_contact) {
		notice(L10n::t('Access to this profile has been restricted.') . EOL);
		return;
	}

	if (!$update) {
		$tab = false;
		if (x($_GET, 'tab')) {
			$tab = notags(trim($_GET['tab']));
		}

		$o .= Profile::getTabs($a, $is_owner, $a->profile['nickname']);

		if ($tab === 'profile') {
			$o .= Profile::getAdvanced($a);
			Addon::callHooks('profile_advanced', $o);
			return $o;
		}

		$o .= Widget::commonFriendsVisitor($a->profile['profile_uid']);

		if (x($_SESSION, 'new_member') && $is_owner) {
			$o .= '<div id="newmember-tips"><a href="newmember"><b>' . L10n::t('Tips for New Members') . '</b></a></div>';
		}

		$commpage = $a->profile['page-flags'] == PAGE_COMMUNITY;
		$commvisitor = $commpage && $remote_contact;

		$a->page['aside'] .= posted_date_widget(System::baseUrl(true) . '/profile/' . $a->profile['nickname'], $a->profile['profile_uid'], true);
		$a->page['aside'] .= Widget::categories(System::baseUrl(true) . '/profile/' . $a->profile['nickname'], (x($category) ? xmlify($category) : ''));
		$a->page['aside'] .= Widget::tagCloud();

		if (can_write_wall($a->profile['profile_uid'])) {
			$x = [
				'is_owner' => $is_owner,
				'allow_location' => ($is_owner || $commvisitor) && $a->profile['allow_location'],
				'default_location' => $is_owner ? $a->user['default-location'] : '',
				'nickname' => $a->profile['nickname'],
				'lockstate' => is_array($a->user)
					&& (strlen($a->user['allow_cid'])
						|| strlen($a->user['allow_gid'])
						|| strlen($a->user['deny_cid'])
						|| strlen($a->user['deny_gid'])
					) ? 'lock' : 'unlock',
				'acl' => $is_owner ? ACL::getFullSelectorHTML($a->user, true) : '',
				'bang' => '',
				'visitor' => $is_owner || $commvisitor ? 'block' : 'none',
				'profile_uid' => $a->profile['profile_uid'],
			];

			$o .= status_editor($a, $x);
		}
	}


	// Get permissions SQL - if $remote_contact is true, our remote user has been pre-verified and we already have fetched his/her groups
	$sql_extra = item_permissions_sql($a->profile['profile_uid'], $remote_contact, $groups);
	$sql_extra2 = '';

	if ($update) {
		$last_updated = (x($_SESSION['last_updated'], $last_updated_key) ? $_SESSION['last_updated'][$last_updated_key] : 0);

		// If the page user is the owner of the page we should query for unseen
		// items. Otherwise use a timestamp of the last succesful update request.
		if ($is_owner || !$last_updated) {
			$sql_extra4 = " AND `item`.`unseen`";
		} else {
			$gmupdate = gmdate(DateTimeFormat::MYSQL, $last_updated);
			$sql_extra4 = " AND `item`.`received` > '" . $gmupdate . "'";
		}

		$r = q("SELECT distinct(parent) AS `item_id`, `item`.`network` AS `item_network`, `item`.`created`
			FROM `item` INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
			AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
			WHERE `item`.`uid` = %d AND `item`.`visible` = 1 AND
			(`item`.`deleted` = 0 OR item.verb = '" . ACTIVITY_LIKE . "'
			OR item.verb = '" . ACTIVITY_DISLIKE . "' OR item.verb = '" . ACTIVITY_ATTEND . "'
			OR item.verb = '" . ACTIVITY_ATTENDNO . "' OR item.verb = '" . ACTIVITY_ATTENDMAYBE . "')
			AND `item`.`moderated` = 0
			AND `item`.`wall` = 1
			$sql_extra4
			$sql_extra
			ORDER BY `item`.`created` DESC",
			intval($a->profile['profile_uid'])
		);

		if (!DBM::is_result($r)) {
			return '';
		}
	} else {
		$sql_post_table = "";

		if (x($category)) {
			$sql_post_table = sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ",
				dbesc(protect_sprintf($category)), intval(TERM_OBJ_POST), intval(TERM_CATEGORY), intval($a->profile['profile_uid']));
		}

		if (x($hashtags)) {
			$sql_post_table .= sprintf("INNER JOIN (SELECT `oid` FROM `term` WHERE `term` = '%s' AND `otype` = %d AND `type` = %d AND `uid` = %d ORDER BY `tid` DESC) AS `term` ON `item`.`id` = `term`.`oid` ",
				dbesc(protect_sprintf($hashtags)), intval(TERM_OBJ_POST), intval(TERM_HASHTAG), intval($a->profile['profile_uid']));
		}

		if ($datequery) {
			$sql_extra2 .= protect_sprintf(sprintf(" AND `thread`.`created` <= '%s' ", dbesc(DateTimeFormat::convert($datequery, 'UTC', date_default_timezone_get()))));
		}
		if ($datequery2) {
			$sql_extra2 .= protect_sprintf(sprintf(" AND `thread`.`created` >= '%s' ", dbesc(DateTimeFormat::convert($datequery2, 'UTC', date_default_timezone_get()))));
		}

		// Belongs the profile page to a forum?
		// If not then we can improve the performance with an additional condition
		$r = q("SELECT `uid` FROM `user` WHERE `uid` = %d AND `page-flags` IN (%d, %d)",
			intval($a->profile['profile_uid']),
			intval(PAGE_COMMUNITY),
			intval(PAGE_PRVGROUP)
		);

		if (!DBM::is_result($r)) {
			$sql_extra3 = sprintf(" AND `thread`.`contact-id` = %d ", intval(intval($a->profile['contact_id'])));
		}

		//  check if we serve a mobile device and get the user settings
		//  accordingly
		if ($a->is_mobile) {
			$itemspage_network = PConfig::get(local_user(), 'system', 'itemspage_mobile_network', 10);
		} else {
			$itemspage_network = PConfig::get(local_user(), 'system', 'itemspage_network', 20);
		}

		//  now that we have the user settings, see if the theme forces
		//  a maximum item number which is lower then the user choice
		if (($a->force_max_items > 0) && ($a->force_max_items < $itemspage_network)) {
			$itemspage_network = $a->force_max_items;
		}

		$a->set_pager_itemspage($itemspage_network);

		$pager_sql = sprintf(" LIMIT %d, %d ", intval($a->pager['start']), intval($a->pager['itemspage']));

		$r = q("SELECT `thread`.`iid` AS `item_id`, `thread`.`network` AS `item_network`
			FROM `thread`
			STRAIGHT_JOIN `item` ON `item`.`id` = `thread`.`iid`
			$sql_post_table
			STRAIGHT_JOIN `contact` ON `contact`.`id` = `thread`.`contact-id`
				AND NOT `contact`.`blocked` AND NOT `contact`.`pending`
			WHERE `thread`.`uid` = %d AND `thread`.`visible`
				AND NOT `thread`.`deleted`
				AND NOT `thread`.`moderated`
				AND `thread`.`wall`
				$sql_extra3 $sql_extra $sql_extra2
			ORDER BY `thread`.`created` DESC $pager_sql",
			intval($a->profile['profile_uid'])
		);
	}

	$parents_arr = [];
	$parents_str = '';

	// Set a time stamp for this page. We will make use of it when we
	// search for new items (update routine)
	$_SESSION['last_updated'][$last_updated_key] = time();

	if (DBM::is_result($r)) {
		foreach ($r as $rr) {
			$parents_arr[] = $rr['item_id'];
		}

		$parents_str = implode(', ', $parents_arr);

		$items = q(item_query($a->profile['profile_uid']) . " AND `item`.`uid` = %d
			AND `item`.`parent` IN (%s)
			$sql_extra ",
			intval($a->profile['profile_uid']),
			dbesc($parents_str)
		);

		$items = conv_sort($items, 'created');
	} else {
		$items = [];
	}

	if ($is_owner && !$update && !Config::get('theme', 'hide_eventlist')) {
		$o .= Profile::getBirthdays();
		$o .= Profile::getEventsReminderHTML();
	}


	if ($is_owner) {
		$unseen = dba::exists('item', ['wall' => true, 'unseen' => true, 'uid' => local_user()]);
		if ($unseen) {
			$r = Item::update(['unseen' => false],
					['wall' => true, 'unseen' => true, 'uid' => local_user()]);
		}
	}

	$o .= conversation($a, $items, 'profile', $update, false, 'commented', local_user());

	if (!$update) {
		$o .= alt_pager($a, count($items));
	}

	return $o;
}
