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

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if (!defined('LACONICA')) { exit(1); }
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class SubscribeAction extends Action {
	function handle($args) {
		parent::handle($args);
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		if (!common_logged_in()) {
			common_user_error(_t('Not logged in.'));
			return;
		}
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		$user = common_current_user();

		if ($_SERVER['REQUEST_METHOD'] != 'POST') {
			common_redirect(common_local_url('subscriptions', array('nickname' => $user->nickname)));
			return;
		}
		
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		$other_nickname = $this->arg('subscribeto');

		$other = User::staticGet('nickname', $other_nickname);
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		if (!$other) {
			common_user_error(_t('No such user.'));
			return;
		}
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		if ($user->isSubscribed($other)) {
			common_user_error(_t('Already subscribed!.'));
			return;
		}
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		$sub = new Subscription();
		$sub->subscriber = $user->id;
		$sub->subscribed = $other->id;
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		$sub->created = DB_DataObject_Cast::dateTime(); # current time
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		if (!$sub->insert()) {
			common_server_error(_t('Couldn\'t create subscription.'));
			return;
		}
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		$this->notify($other, $user);

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		common_redirect(common_local_url('subscriptions', array('nickname' =>
																$user->nickname)));
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	}
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	function notify($listenee, $listener) {
		# XXX: add other notifications (Jabber, SMS) here
		# XXX: queue this and handle it offline
		$this->notify_email($listenee, $listener);
	}
	
	function notify_email($listenee, $listener) {
		if ($listenee->email) {
			global $config;
			$profile = $listenee->getProfile();
			$other = $listener->getProfile();
			$name = $profile->getBestName();
			$other_name = $other->getBestName();
			$recipients = $listenee->email;
			$headers['From'] = mail_notify_from();
			$headers['To'] = $name . ' <' . $listenee->email . '>';
			$headers['Subject'] = $other_name . _t(' is now listening to your notices on ') . $config['site']['name'];

			$body = 
			  ($other->fullname) ? 
			  ($other->fullname . ' (' . $other->nickname . ')') : $other->nickname;

			$body .= _t(' is now listening to your notices on ') . $config['site']['name'] . '.';
			$body .= "\n\n";
			$body .= "\t".$other->profileurl;
			$body .= "\n\n";
			$body .= _t('Faithfully yours, ');
			$body .= "\n";
			$body .= $config['site']['name'];
			$body .= "\n";

			mail_send($recipients, $headers, $body);
		}
	}
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}