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<?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); }

/**
 * Table Definition for user
 */
require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
require_once 'Validate.php';

class User extends Memcached_DataObject 
{
    ###START_AUTOCODE
    /* the code below is auto generated do not remove the above tag */

    public $__table = 'user';                            // table name
    public $id;                              // int(4)  primary_key not_null
    public $nickname;                        // varchar(64)  unique_key
    public $password;                        // varchar(255)  
    public $email;                           // varchar(255)  unique_key
    public $incomingemail;                   // varchar(255)  unique_key
    public $emailnotifysub;                  // tinyint(1)   default_1
    public $emailnotifyfav;                  // tinyint(1)   default_1
    public $emailnotifymsg;                  // tinyint(1)   default_1
    public $emailmicroid;                    // tinyint(1)   default_1
    public $language;                        // varchar(50)  
    public $timezone;                        // varchar(50)  
    public $emailpost;                       // tinyint(1)   default_1
    public $jabber;                          // varchar(255)  unique_key
    public $jabbernotify;                    // tinyint(1)  
    public $jabberreplies;                   // tinyint(1)  
    public $jabbermicroid;                   // tinyint(1)   default_1
    public $updatefrompresence;              // tinyint(1)  
    public $sms;                             // varchar(64)  unique_key
    public $carrier;                         // int(4)  
    public $smsnotify;                       // tinyint(1)  
    public $smsreplies;                      // tinyint(1)  
    public $smsemail;                        // varchar(255)  
    public $uri;                             // varchar(255)  unique_key
    public $autosubscribe;                   // tinyint(1)  
    public $created;                         // datetime()   not_null
    public $modified;                        // timestamp()   not_null default_CURRENT_TIMESTAMP
    public $inboxed;                         // tinyint(1)  
    public $urlshorteningservice;            // varchar(50)   default_ur1.ca

    /* Static get */
    function staticGet($k,$v=NULL) { return Memcached_DataObject::staticGet('User',$k,$v); }

    /* the code above is auto generated do not remove the tag below */
    ###END_AUTOCODE

	function getProfile() {
		return Profile::staticGet('id', $this->id);
	}

	function isSubscribed($other) {
		assert(!is_null($other));
		# XXX: cache results of this query
		$sub = Subscription::pkeyGet(array('subscriber' => $this->id,
										   'subscribed' => $other->id));
		return (is_null($sub)) ? false : true;
	}

	# 'update' won't write key columns, so we have to do it ourselves.

	function updateKeys(&$orig) {
		$parts = array();
		foreach (array('nickname', 'email', 'jabber', 'incomingemail', 'sms', 'carrier', 'smsemail', 'language', 'timezone') as $k) {
			if (strcmp($this->$k, $orig->$k) != 0) {
				$parts[] = $k . ' = ' . $this->_quote($this->$k);
			}
		}
		if (count($parts) == 0) {
			# No changes
			return true;
		}
		$toupdate = implode(', ', $parts);

		$table = $this->tableName();
		if(common_config('db','quote_identifiers')) {
			$table = '"' . $table . '"';
		}
		$qry = 'UPDATE ' . $table . ' SET ' . $toupdate .
		  ' WHERE id = ' . $this->id;
		$orig->decache();
		$result = $this->query($qry);
		if ($result) {
			$this->encache();
		}
		return $result;
	}

	function allowed_nickname($nickname) {
		# XXX: should already be validated for size, content, etc.
		static $blacklist = array('rss', 'xrds', 'doc', 'main',
								  'settings', 'notice', 'user',
								  'search', 'avatar', 'tag', 'tags',
								  'api', 'message');
		$merged = array_merge($blacklist, common_config('nickname', 'blacklist'));
		return !in_array($nickname, $merged);
	}

	function getCurrentNotice($dt=NULL) {
		$profile = $this->getProfile();
		if (!$profile) {
			return NULL;
		}
		return $profile->getCurrentNotice($dt);
	}

	function getCarrier() {
		return Sms_carrier::staticGet('id', $this->carrier);
	}

	function subscribeTo($other) {
		$sub = new Subscription();
		$sub->subscriber = $this->id;
		$sub->subscribed = $other->id;

		$sub->created = common_sql_now(); # current time

		if (!$sub->insert()) {
			return false;
		}

		return true;
	}

	static function register($fields) {

		# MAGICALLY put fields into current scope

		extract($fields);

		$profile = new Profile();

		$profile->query('BEGIN');

		$profile->nickname = $nickname;
		$profile->profileurl = common_profile_url($nickname);

		if ($fullname) {
			$profile->fullname = $fullname;
		}
		if ($homepage) {
			$profile->homepage = $homepage;
		}
		if ($bio) {
			$profile->bio = $bio;
		}
		if ($location) {
			$profile->location = $location;
		}

		$profile->created = common_sql_now();

		$id = $profile->insert();

		if (!$id) {
			common_log_db_error($profile, 'INSERT', __FILE__);
		    return FALSE;
		}

		$user = new User();

		$user->id = $id;
		$user->nickname = $nickname;

		if ($password) { # may not have a password for OpenID users
			$user->password = common_munge_password($password, $id);
		}

		# Users who respond to invite email have proven their ownership of that address

		if ($code) {
			$invite = Invitation::staticGet($code);
			if ($invite && $invite->address && $invite->address_type == 'email' && $invite->address == $email) {
				$user->email = $invite->address;
			}
		}

		$inboxes = common_config('inboxes', 'enabled');
		
		if ($inboxes === true || $inboxes == 'transitional') {
			$user->inboxed = 1;
		}
		
		$user->created = common_sql_now();
		$user->uri = common_user_uri($user);

		$result = $user->insert();

		if (!$result) {
			common_log_db_error($user, 'INSERT', __FILE__);
			return FALSE;
		}

		# Everyone is subscribed to themself

		$subscription = new Subscription();
		$subscription->subscriber = $user->id;
		$subscription->subscribed = $user->id;
		$subscription->created = $user->created;

		$result = $subscription->insert();

		if (!$result) {
			common_log_db_error($subscription, 'INSERT', __FILE__);
			return FALSE;
		}

		if ($email && !$user->email) {

			$confirm = new Confirm_address();
			$confirm->code = common_confirmation_code(128);
			$confirm->user_id = $user->id;
			$confirm->address = $email;
			$confirm->address_type = 'email';

			$result = $confirm->insert();
			if (!$result) {
				common_log_db_error($confirm, 'INSERT', __FILE__);
				return FALSE;
			}
		}

		if ($code && $user->email) {
			$user->emailChanged();
		}

		$profile->query('COMMIT');

		if ($email && !$user->email) {
			mail_confirm_address($confirm->code,
								 $profile->nickname,
								 $email);
		}

		return $user;
	}

	# Things we do when the email changes

	function emailChanged() {

		$invites = new Invitation();
		$invites->address = $this->email;
		$invites->address_type = 'email';

		if ($invites->find()) {
			while ($invites->fetch()) {
				$other = User::staticGet($invites->user_id);
				subs_subscribe_to($other, $this);
			}
		}
	}

	function hasFave($notice) {
		$cache = common_memcache();

		# XXX: Kind of a hack.
		
		if ($cache) {
			# This is the stream of favorite notices, in rev chron
			# order. This forces it into cache.
			$faves = $this->favoriteNotices(0, NOTICE_CACHE_WINDOW);
			
			while ($faves->fetch()) {
				if ($faves->id > $notice->id) {
					# If we passed it, it's not a fave
					return false;
				} else if ($faves->id == $notice->id) {
					# If it matches a cached notice, then it's a fave
					return true;
				}
			}
			# If it's past the end of the cache window,
			# fall through to the default
		}
		
		$fave = Fave::pkeyGet(array('user_id' => $this->id,
									'notice_id' => $notice->id));
		return ((is_null($fave)) ? false : true);
	}
	
	function mutuallySubscribed($other) {
		return $this->isSubscribed($other) &&
		  $other->isSubscribed($this);
	}
	
	function mutuallySubscribedUsers() {

		# 3-way join; probably should get cached
		
		$qry = 'SELECT user.* ' .
		  'FROM subscription sub1 JOIN user ON sub1.subscribed = user.id ' .
		  'JOIN subscription sub2 ON user.id = sub2.subscriber ' .
		  'WHERE sub1.subscriber = %d and sub2.subscribed = %d ' .
		  'ORDER BY user.nickname';
		
		$user = new User();
		$user->query(sprintf($qry, $this->id, $this->id));

		return $user;
	}

	function getReplies($offset=0, $limit=NOTICES_PER_PAGE, $since_id=0, $before_id=0) {
		$qry =
		  'SELECT notice.* ' .
		  'FROM notice JOIN reply ON notice.id = reply.notice_id ' .
		  'WHERE reply.profile_id = %d ';
		
		return Notice::getStream(sprintf($qry, $this->id),
								 'user:replies:'.$this->id,
								 $offset, $limit, $since_id, $before_id);
	}
	
	function getNotices($offset=0, $limit=NOTICES_PER_PAGE, $since_id=0, $before_id=0) {
		$qry =
		  'SELECT * ' .
		  'FROM notice ' .
		  'WHERE profile_id = %d ';
		
		return Notice::getStream(sprintf($qry, $this->id),
								 'user:notices:'.$this->id,
								 $offset, $limit, $since_id, $before_id);
	}
	
	function favoriteNotices($offset=0, $limit=NOTICES_PER_PAGE) {
		$qry =
		  'SELECT notice.* ' .
		  'FROM notice JOIN fave ON notice.id = fave.notice_id ' .
		  'WHERE fave.user_id = %d ';
		
		return Notice::getStream(sprintf($qry, $this->id),
								 'user:faves:'.$this->id,
								 $offset, $limit);
	}
	
	function noticesWithFriends($offset=0, $limit=NOTICES_PER_PAGE, $since_id=0, $before_id=0) {
		$enabled = common_config('inboxes', 'enabled');

		# Complicated code, depending on whether we support inboxes yet
		# XXX: make this go away when inboxes become mandatory
		
		if ($enabled === false || 
			($enabled == 'transitional' && $this->inboxed == 0)) {
			$qry =
			  'SELECT notice.* ' .
			  'FROM notice JOIN subscription ON notice.profile_id = subscription.subscribed ' .
			  'WHERE subscription.subscriber = %d ';
			$order = NULL;
		} else if ($enabled === true ||
				   ($enabled == 'transitional' && $this->inboxed == 1)) {				   
			$qry =
			  'SELECT notice.* ' .
			  'FROM notice JOIN notice_inbox ON notice.id = notice_inbox.notice_id ' .
			  'WHERE notice_inbox.user_id = %d ';
			# NOTE: we override ORDER
			$order = 'ORDER BY notice_inbox.created DESC, notice_inbox.notice_id DESC ';
		}
		
		return Notice::getStream(sprintf($qry, $this->id),
								 'user:notices_with_friends:' . $this->id,
								 $offset, $limit, $since_id, $before_id,
								 $order);
	}
	
	function blowFavesCache() {
		$cache = common_memcache();
		if ($cache) {
			$cache->delete(common_cache_key('user:faves:'.$this->id));
		}
	}
}