<?php
/**
 * @copyright Copyright (C) 2010-2022, the Friendica project
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

namespace Friendica\Module;

use Friendica\BaseModule;
use Friendica\Content\ContactSelector;
use Friendica\Content\Nav;
use Friendica\Content\Pager;
use Friendica\Content\Widget;
use Friendica\Core\Protocol;
use Friendica\Core\Renderer;
use Friendica\Core\Theme;
use Friendica\Core\Worker;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model;
use Friendica\Model\User;
use Friendica\Module\Security\Login;
use Friendica\Network\HTTPException\NotFoundException;

/**
 *  Manages and show Contacts and their content
 */
class Contact extends BaseModule
{
	const TAB_CONVERSATIONS = 1;
	const TAB_POSTS = 2;
	const TAB_PROFILE = 3;
	const TAB_CONTACTS = 4;
	const TAB_ADVANCED = 5;
	const TAB_MEDIA = 6;

	private static function batchActions()
	{
		if (empty($_POST['contact_batch']) || !is_array($_POST['contact_batch'])) {
			return;
		}

		$redirectUrl = $_POST['redirect_url'] ?? 'contact';

		self::checkFormSecurityTokenRedirectOnError($redirectUrl, 'contact_batch_actions');

		$orig_records = Model\Contact::selectToArray(['id', 'uid'], ['id' => $_POST['contact_batch'], 'uid' => [0, local_user()], 'self' => false, 'deleted' => false]);

		$count_actions = 0;
		foreach ($orig_records as $orig_record) {
			$cdata = Model\Contact::getPublicAndUserContactID($orig_record['id'], local_user());
			if (empty($cdata) || public_contact() === $cdata['public']) {
				// No action available on your own contact
				continue;
			}

			if (!empty($_POST['contacts_batch_update']) && $cdata['user']) {
				self::updateContactFromPoll($cdata['user']);
				$count_actions++;
			}

			if (!empty($_POST['contacts_batch_block'])) {
				self::toggleBlockContact($cdata['public'], local_user());
				$count_actions++;
			}

			if (!empty($_POST['contacts_batch_ignore'])) {
				self::toggleIgnoreContact($cdata['public']);
				$count_actions++;
			}
		}
		if ($count_actions > 0) {
			info(DI::l10n()->tt('%d contact edited.', '%d contacts edited.', $count_actions));
		}

		DI::baseUrl()->redirect($redirectUrl);
	}

	protected function post(array $request = [])
	{
		if (!local_user()) {
			return;
		}

		// @TODO: Replace with parameter from router
		if (DI::args()->getArgv()[1] === 'batch') {
			self::batchActions();
		}
	}

	/* contact actions */

	/**
	 * @param int $contact_id Id of contact with uid != 0
	 * @throws NotFoundException
	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
	 * @throws \ImagickException
	 */
	public static function updateContactFromPoll(int $contact_id)
	{
		$contact = DBA::selectFirst('contact', ['uid', 'url', 'network'], ['id' => $contact_id, 'uid' => local_user(), 'deleted' => false]);
		if (!DBA::isResult($contact)) {
			return;
		}

		if ($contact['network'] == Protocol::OSTATUS) {
			$result = Model\Contact::createFromProbeForUser($contact['uid'], $contact['url'], $contact['network']);

			if ($result['success']) {
				Model\Contact::update(['subhub' => 1], ['id' => $contact_id]);
			}

			// pull feed and consume it, which should subscribe to the hub.
			Worker::add(PRIORITY_HIGH, 'OnePoll', $contact_id, 'force');
		} else {
			Worker::add(PRIORITY_HIGH, 'UpdateContact', $contact_id);
		}
	}

	/**
	 * Toggles the blocked status of a contact identified by id.
	 *
	 * @param int $contact_id Id of the contact with uid = 0
	 * @param int $owner_id   Id of the user we want to block the contact for
	 * @throws \Exception
	 */
	private static function toggleBlockContact(int $contact_id, int $owner_id)
	{
		$blocked = !Model\Contact\User::isBlocked($contact_id, $owner_id);
		Model\Contact\User::setBlocked($contact_id, $owner_id, $blocked);
	}

	/**
	 * Toggles the ignored status of a contact identified by id.
	 *
	 * @param int $contact_id Id of the contact with uid = 0
	 * @throws \Exception
	 */
	private static function toggleIgnoreContact(int $contact_id)
	{
		$ignored = !Model\Contact\User::isIgnored($contact_id, local_user());
		Model\Contact\User::setIgnored($contact_id, local_user(), $ignored);
	}

	protected function content(array $request = []): string
	{
		if (!local_user()) {
			return Login::form($_SERVER['REQUEST_URI']);
		}

		$search = trim($_GET['search'] ?? '');
		$nets   = trim($_GET['nets']   ?? '');
		$rel    = trim($_GET['rel']    ?? '');
		$group  = trim($_GET['group']  ?? '');

		$accounttype = $_GET['accounttype'] ?? '';
		$accounttypeid = User::getAccountTypeByString($accounttype);

		$page = DI::page();

		$page->registerFooterScript(Theme::getPathForFile('asset/typeahead.js/dist/typeahead.bundle.js'));
		$page->registerFooterScript(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.js'));
		$page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput.css'));
		$page->registerStylesheet(Theme::getPathForFile('js/friendica-tagsinput/friendica-tagsinput-typeahead.css'));

		$vcard_widget = '';
		$findpeople_widget = Widget::findPeople();
		if (isset($_GET['add'])) {
			$follow_widget = Widget::follow($_GET['add']);
		} else {
			$follow_widget = Widget::follow();
		}

		$account_widget = Widget::accountTypes($_SERVER['REQUEST_URI'], $accounttype);
		$networks_widget = Widget::networks($_SERVER['REQUEST_URI'], $nets);
		$rel_widget = Widget::contactRels($_SERVER['REQUEST_URI'], $rel);
		$groups_widget = Widget::groups($_SERVER['REQUEST_URI'], $group);

		DI::page()['aside'] .= $vcard_widget . $findpeople_widget . $follow_widget . $account_widget . $groups_widget . $networks_widget . $rel_widget;

		$tpl = Renderer::getMarkupTemplate('contacts-head.tpl');
		DI::page()['htmlhead'] .= Renderer::replaceMacros($tpl, [
			'$baseurl' => DI::baseUrl()->get(true),
		]);

		$o = '';
		Nav::setSelected('contact');

		$_SESSION['return_path'] = DI::args()->getQueryString();

		$sql_values = [local_user()];

		// @TODO: Replace with parameter from router
		$type = DI::args()->getArgv()[1] ?? '';

		switch ($type) {
			case 'blocked':
				$sql_extra = " AND EXISTS(SELECT `id` from `user-contact` WHERE `contact`.`id` = `user-contact`.`cid` and `user-contact`.`uid` = ? and `user-contact`.`blocked`)";
				// This makes the query look for contact.uid = 0
				array_unshift($sql_values, 0);
				break;
			case 'hidden':
				$sql_extra = " AND `hidden` AND NOT `blocked` AND NOT `pending`";
				break;
			case 'ignored':
				$sql_extra = " AND EXISTS(SELECT `id` from `user-contact` WHERE `contact`.`id` = `user-contact`.`cid` and `user-contact`.`uid` = ? and `user-contact`.`ignored`)";
				// This makes the query look for contact.uid = 0
				array_unshift($sql_values, 0);
				break;
			case 'archived':
				$sql_extra = " AND `archive` AND NOT `blocked` AND NOT `pending`";
				break;
			case 'pending':
				$sql_extra = " AND `pending` AND NOT `archive` AND NOT `failed` AND ((`rel` = ?)
					OR EXISTS (SELECT `id` FROM `intro` WHERE `contact-id` = `contact`.`id` AND NOT `ignore`))";
				$sql_values[] = Model\Contact::SHARING;
				break;
			default:
				$sql_extra = " AND NOT `archive` AND NOT `blocked` AND NOT `pending`";
				break;
		}

		if (isset($accounttypeid)) {
			$sql_extra .= " AND `contact-type` = ?";
			$sql_values[] = $accounttypeid;
		}

		$searching = false;
		$search_hdr = null;
		if ($search) {
			$searching = true;
			$search_hdr = $search;
			$search_txt = preg_quote($search);
			$sql_extra .= " AND (name REGEXP ? OR url REGEXP ? OR nick REGEXP ?)";
			$sql_values[] = $search_txt;
			$sql_values[] = $search_txt;
			$sql_values[] = $search_txt;
		}

		if ($nets) {
			$sql_extra .= " AND network = ? ";
			$sql_values[] = $nets;
		}

		switch ($rel) {
			case 'followers':
				$sql_extra .= " AND `rel` IN (?, ?)";
				$sql_values[] = Model\Contact::FOLLOWER;
				$sql_values[] = Model\Contact::FRIEND;
				break;
			case 'following':
				$sql_extra .= " AND `rel` IN (?, ?)";
				$sql_values[] = Model\Contact::SHARING;
				$sql_values[] = Model\Contact::FRIEND;
				break;
			case 'mutuals':
				$sql_extra .= " AND `rel` = ?";
				$sql_values[] = Model\Contact::FRIEND;
				break;
		}

		if ($group) {
			$sql_extra .= " AND EXISTS(SELECT `id` FROM `group_member` WHERE `gid` = ? AND `contact`.`id` = `contact-id`)";
			$sql_values[] = $group;
		}

		$networks = Widget::unavailableNetworks();
		$sql_extra .= " AND NOT `network` IN (" . substr(str_repeat("?, ", count($networks)), 0, -2) . ")";
		$sql_values = array_merge($sql_values, $networks);

		$condition = ["`uid` = ? AND NOT `self` AND NOT `deleted`" . $sql_extra];
		$condition = array_merge($condition, $sql_values);

		$total = DBA::count('contact', $condition);

		$pager = new Pager(DI::l10n(), DI::args()->getQueryString());

		$contacts = [];

		$stmt = DBA::select('contact', [], $condition, ['order' => ['name'], 'limit' => [$pager->getStart(), $pager->getItemsPerPage()]]);

		while ($contact = DBA::fetch($stmt)) {
			$contact['blocked'] = Model\Contact\User::isBlocked($contact['id'], local_user());
			$contact['readonly'] = Model\Contact\User::isIgnored($contact['id'], local_user());
			$contacts[] = self::getContactTemplateVars($contact);
		}
		DBA::close($stmt);

		$tabs = [
			[
				'label' => DI::l10n()->t('All Contacts'),
				'url'   => 'contact',
				'sel'   => !$type ? 'active' : '',
				'title' => DI::l10n()->t('Show all contacts'),
				'id'    => 'showall-tab',
				'accesskey' => 'l',
			],
			[
				'label' => DI::l10n()->t('Pending'),
				'url'   => 'contact/pending',
				'sel'   => $type == 'pending' ? 'active' : '',
				'title' => DI::l10n()->t('Only show pending contacts'),
				'id'    => 'showpending-tab',
				'accesskey' => 'p',
			],
			[
				'label' => DI::l10n()->t('Blocked'),
				'url'   => 'contact/blocked',
				'sel'   => $type == 'blocked' ? 'active' : '',
				'title' => DI::l10n()->t('Only show blocked contacts'),
				'id'    => 'showblocked-tab',
				'accesskey' => 'b',
			],
			[
				'label' => DI::l10n()->t('Ignored'),
				'url'   => 'contact/ignored',
				'sel'   => $type == 'ignored' ? 'active' : '',
				'title' => DI::l10n()->t('Only show ignored contacts'),
				'id'    => 'showignored-tab',
				'accesskey' => 'i',
			],
			[
				'label' => DI::l10n()->t('Archived'),
				'url'   => 'contact/archived',
				'sel'   => $type == 'archived' ? 'active' : '',
				'title' => DI::l10n()->t('Only show archived contacts'),
				'id'    => 'showarchived-tab',
				'accesskey' => 'y',
			],
			[
				'label' => DI::l10n()->t('Hidden'),
				'url'   => 'contact/hidden',
				'sel'   => $type == 'hidden' ? 'active' : '',
				'title' => DI::l10n()->t('Only show hidden contacts'),
				'id'    => 'showhidden-tab',
				'accesskey' => 'h',
			],
			[
				'label' => DI::l10n()->t('Groups'),
				'url'   => 'group',
				'sel'   => '',
				'title' => DI::l10n()->t('Organize your contact groups'),
				'id'    => 'contactgroups-tab',
				'accesskey' => 'e',
			],
		];

		$tabs_tpl = Renderer::getMarkupTemplate('common_tabs.tpl');
		$tabs_html = Renderer::replaceMacros($tabs_tpl, ['$tabs' => $tabs]);

		switch ($rel) {
			case 'followers': $header = DI::l10n()->t('Followers'); break;
			case 'following': $header = DI::l10n()->t('Following'); break;
			case 'mutuals':   $header = DI::l10n()->t('Mutual friends'); break;
			default:          $header = DI::l10n()->t('Contacts');
		}

		switch ($type) {
			case 'pending':	 $header .= ' - ' . DI::l10n()->t('Pending'); break;
			case 'blocked':	 $header .= ' - ' . DI::l10n()->t('Blocked'); break;
			case 'hidden':   $header .= ' - ' . DI::l10n()->t('Hidden'); break;
			case 'ignored':  $header .= ' - ' . DI::l10n()->t('Ignored'); break;
			case 'archived': $header .= ' - ' . DI::l10n()->t('Archived'); break;
		}

		$header .= $nets ? ' - ' . ContactSelector::networkToName($nets) : '';

		$tpl = Renderer::getMarkupTemplate('contacts-template.tpl');
		$o .= Renderer::replaceMacros($tpl, [
			'$header'     => $header,
			'$tabs'       => $tabs_html,
			'$total'      => $total,
			'$search'     => $search_hdr,
			'$desc'       => DI::l10n()->t('Search your contacts'),
			'$finding'    => $searching ? DI::l10n()->t('Results for: %s', $search) : '',
			'$submit'     => DI::l10n()->t('Find'),
			'$cmd'        => DI::args()->getCommand(),
			'$contacts'   => $contacts,
			'$form_security_token'  => BaseModule::getFormSecurityToken('contact_batch_actions'),
			'multiselect' => 1,
			'$batch_actions' => [
				'contacts_batch_update'  => DI::l10n()->t('Update'),
				'contacts_batch_block'   => DI::l10n()->t('Block') . '/' . DI::l10n()->t('Unblock'),
				'contacts_batch_ignore'  => DI::l10n()->t('Ignore') . '/' . DI::l10n()->t('Unignore'),
			],
			'$h_batch_actions' => DI::l10n()->t('Batch Actions'),
			'$paginate'   => $pager->renderFull($total),
		]);

		return $o;
	}

	/**
	 * List of pages for the Contact TabBar
	 *
	 * Available Pages are 'Status', 'Profile', 'Contacts' and 'Common Friends'
	 *
	 * @param array $contact    The contact array
	 * @param int   $active_tab 1 if tab should be marked as active
	 *
	 * @return string HTML string of the contact page tabs buttons.
	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
	 * @throws \ImagickException
	 */
	public static function getTabsHTML(array $contact, int $active_tab)
	{
		$cid = $pcid = $contact['id'];
		$data = Model\Contact::getPublicAndUserContactID($contact['id'], local_user());
		if (!empty($data['user']) && ($contact['id'] == $data['public'])) {
			$cid = $data['user'];
		} elseif (!empty($data['public'])) {
			$pcid = $data['public'];
		}

		// tabs
		$tabs = [
			[
				'label' => DI::l10n()->t('Status'),
				'url'   => 'contact/' . $pcid . '/conversations',
				'sel'   => (($active_tab == self::TAB_CONVERSATIONS) ? 'active' : ''),
				'title' => DI::l10n()->t('Conversations started by this contact'),
				'id'    => 'status-tab',
				'accesskey' => 'm',
			],
			[
				'label' => DI::l10n()->t('Posts and Comments'),
				'url'   => 'contact/' . $pcid . '/posts',
				'sel'   => (($active_tab == self::TAB_POSTS) ? 'active' : ''),
				'title' => DI::l10n()->t('Status Messages and Posts'),
				'id'    => 'posts-tab',
				'accesskey' => 'p',
			],
			[
				'label' => DI::l10n()->t('Media'),
				'url'   => 'contact/' . $pcid . '/media',
				'sel'   => (($active_tab == self::TAB_MEDIA) ? 'active' : ''),
				'title' => DI::l10n()->t('Posts containing media objects'),
				'id'    => 'media-tab',
				'accesskey' => 'd',
			],
			[
				'label' => DI::l10n()->t('Profile'),
				'url'   => 'contact/' . $cid,
				'sel'   => (($active_tab == self::TAB_PROFILE) ? 'active' : ''),
				'title' => DI::l10n()->t('Profile Details'),
				'id'    => 'profile-tab',
				'accesskey' => 'o',
			],
			['label' => DI::l10n()->t('Contacts'),
				'url'   => 'contact/' . $pcid . '/contacts',
				'sel'   => (($active_tab == self::TAB_CONTACTS) ? 'active' : ''),
				'title' => DI::l10n()->t('View all known contacts'),
				'id'    => 'contacts-tab',
				'accesskey' => 't'
			],
		];

		if (!empty($contact['network']) && in_array($contact['network'], [Protocol::FEED, Protocol::MAIL]) && ($cid != $pcid)) {
			$tabs[] = ['label' => DI::l10n()->t('Advanced'),
				'url'   => 'contact/' . $cid . '/advanced/',
				'sel'   => (($active_tab == self::TAB_ADVANCED) ? 'active' : ''),
				'title' => DI::l10n()->t('Advanced Contact Settings'),
				'id'    => 'advanced-tab',
				'accesskey' => 'r'
			];
		}

		$tab_tpl = Renderer::getMarkupTemplate('common_tabs.tpl');
		$tab_str = Renderer::replaceMacros($tab_tpl, ['$tabs' => $tabs]);

		return $tab_str;
	}

	/**
	 * Return the fields for the contact template
	 *
	 * @param array $contact Contact array
	 * @return array Template fields
	 */
	public static function getContactTemplateVars(array $contact)
	{
		$alt_text = '';

		if (!empty($contact['url']) && isset($contact['uid']) && ($contact['uid'] == 0) && local_user()) {
			$personal = Model\Contact::getByURL($contact['url'], false, ['uid', 'rel', 'self'], local_user());
			if (!empty($personal)) {
				$contact['uid'] = $personal['uid'];
				$contact['rel'] = $personal['rel'];
				$contact['self'] = $personal['self'];
			}
		}

		if (!empty($contact['uid']) && !empty($contact['rel']) && local_user() == $contact['uid']) {
			switch ($contact['rel']) {
				case Model\Contact::FRIEND:
					$alt_text = DI::l10n()->t('Mutual Friendship');
					break;

				case Model\Contact::FOLLOWER;
					$alt_text = DI::l10n()->t('is a fan of yours');
					break;

				case Model\Contact::SHARING;
					$alt_text = DI::l10n()->t('you are a fan of');
					break;

				default:
					break;
			}
		}

		$url = Model\Contact::magicLinkByContact($contact);

		if (strpos($url, 'redir/') === 0) {
			$sparkle = ' class="sparkle" ';
		} else {
			$sparkle = '';
		}

		if ($contact['pending']) {
			if (in_array($contact['rel'], [Model\Contact::FRIEND, Model\Contact::SHARING])) {
				$alt_text = DI::l10n()->t('Pending outgoing contact request');
			} else {
				$alt_text = DI::l10n()->t('Pending incoming contact request');
			}
		}

		if ($contact['self']) {
			$alt_text = DI::l10n()->t('This is you');
			$url = $contact['url'];
			$sparkle = '';
		}

		return [
			'id'           => $contact['id'],
			'url'          => $url,
			'img_hover'    => DI::l10n()->t('Visit %s\'s profile [%s]', $contact['name'], $contact['url']),
			'photo_menu'   => Model\Contact::photoMenu($contact),
			'thumb'        => Model\Contact::getThumb($contact, true),
			'alt_text'     => $alt_text,
			'name'         => $contact['name'],
			'nick'         => $contact['nick'],
			'details'      => $contact['location'],
			'tags'         => $contact['keywords'],
			'about'        => $contact['about'],
			'account_type' => Model\Contact::getAccountType($contact['contact-type']),
			'sparkle'      => $sparkle,
			'itemurl'      => ($contact['addr'] ?? '') ?: $contact['url'],
			'network'      => ContactSelector::networkToName($contact['network'], $contact['url'], $contact['protocol'], $contact['gsid']),
		];
	}
}