<?php
/*
 * Laconica - a distributed open-source microblogging tool
 * Copyright (C) 2008, Controlez-Vous, Inc.
 *
 * 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 <http://www.gnu.org/licenses/>.
 */

if (!defined('LACONICA')) { exit(1); }

require_once(INSTALLDIR.'/lib/settingsaction.php');

class TagotherAction extends Action {
	
	function handle($args) {
		
		parent::handle($args);

		if (!common_logged_in()) {
			$this->client_error(_('Not logged in'), 403);
			return;
		}
		
		if ($_SERVER['REQUEST_METHOD'] == 'POST') {
			$this->save_tags();
		} else {
			$id = $this->trimmed('id');
			if (!$id) {
				$this->client_error(_('No id argument.'));
				return;
			}
			$profile = Profile::staticGet('id', $id);
			if (!$profile) {
				$this->client_error(_('No profile with that ID.'));
				return;
			}
			$this->show_form($profile);
		}
	}
	
	function show_form($profile, $error=NULL) {
		
		$user = common_current_user();
		
		common_show_header(_('Tag a person'),
						   NULL, array($profile, $error), array($this, 'show_top'));

		$avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
		
		if ($avatar) {
			common_element('img', array('src' => $avatar->url,
										'class' => 'avatar profile',
										'width' => AVATAR_PROFILE_SIZE,
										'height' => AVATAR_PROFILE_SIZE,
										'alt' => $profile->nickname));
		}
		
		common_element('a', array('href' => $profile->profileurl,
								  'class' => 'external profile nickname'),
					   $nickname);
		
		if ($profile->fullname) {
			common_element_start('div', 'fullname');
			if ($profile->homepage) {
				common_element('a', array('href' => $profile->homepage),
							   $profile->fullname);
			} else {
				common_text($profile->fullname);
			}
			common_element_end('div');
		}
		if ($profile->location) {
			common_element('div', 'location', $profile->location);
		}
		if ($profile->bio) {
			common_element('div', 'bio', $profile->bio);
		}
		
		common_element_start('form', array('method' => 'post',
										   'id' => 'tagother',
										   'name' => 'tagother',
										   'action' => $this->self_url()));
		common_hidden('token', common_session_token());
		common_hidden('id', $profile->id);
		common_input('tags', _('Tags'),
					 ($this->arg('tags')) ? $this->arg('tags') : implode(' ', Profile_tag::getTags($user->id, $profile->id)),
					 _('Tags for this user (letters, numbers, -, ., and _), comma- or space- separated'));

		common_submit('save', _('Save'));
		common_element_end('form');
		common_show_footer();
		
	}

	function save_tags() {
		
		$id = $this->trimmed('id');
		$tagstring = $this->trimmed('tags');
		$token = $this->trimmed('token');
		
		if (!$token || $token != common_session_token()) {
			$this->show_form(_('There was a problem with your session token. Try again, please.'));
			return;
		}
		
		$profile = Profile::staticGet('id', $id);
		
		if (!$profile) {
			$this->client_error(_('No such profile.'));
			return;
		}

		$tags = array_map('common_canonical_tag', preg_split('/[\s,]+/', $tagstring));

		foreach ($tags as $tag) {
			if (!common_valid_profile_tag($tag)) {
				$this->show_form($profile, sprintf(_('Invalid tag: "%s"'), $tag));
				return;
			}
		}
		
		$user = common_current_user();
		
		if (!Subscription::pkeyGet(array('subscriber' => $user->id,
										 'subscribed' => $profile->id)) &&
			!Subscription::pkeyGet(array('subscriber' => $profile->id,
										 'subscribed' => $user->id)))
		{
			$this->client_error(_('You can only tag people you are subscribed to or who are subscribed to you.'));
			return;
		}
		
		$result = Profile_tag::setTags($user->id, $profile->id);
		
		if (!$result) {
			$this->client_error(_('Could not save tags.'));
			return;
		}

		$action = $user->isSubscribed($profile) ? 'subscriptions' : 'subscribers';
		
		if ($this->boolean('ajax')) {
			common_start_html('text/xml');
			common_element_start('head');
			common_element('title', null, _('Tags'));
			common_element_end('head');
			common_element_start('body');
			common_element_start('p', 'subtags');
			foreach ($tags as $tag) {
				common_element('a', array('href' => common_local_url($action,
																	 array('nickname' => $user->nickname,
																		   'tag' => $tag))),
							   $tag);
			}
			common_element_end('p');
			common_element_end('body');
			common_element_end('html');
		} else {
			common_redirect(common_local_url($action, array('nickname' =>
															$user->nickname)));
        }
	}
	
	function show_top($arr = NULL) {
		list($profile, $error) = $arr;
		if ($error) {
			common_element('p', 'error', $error);
		} else {
			common_element_start('div', 'instructions');
			common_element('p', NULL,
						   _('Use this form to add tags to your subscribers or subscriptions.'));
			common_element_end('div');
		}
	}
}