rcube_contacts.php
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rcube_contacts.php
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	<?php

	/*
	+-----------------------------------------------------------------------+
	\| program/include/rcube_contacts.php \|
	\| \|
	\| This file is part of the RoundCube Webmail client \|
	\| Copyright (C) 2006-2010, RoundCube Dev. - Switzerland \|
	\| Licensed under the GNU GPL \|
	\| \|
	\| PURPOSE: \|
	\| Interface to the local address book database \|
	\| \|
	+-----------------------------------------------------------------------+
	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
	+-----------------------------------------------------------------------+

	$Id$

	*/


	/**
	* Model class for the local address book database
	*
	* @package Addressbook
	*/
	class rcube_contacts extends rcube_addressbook
	{
	private $db = null;
	private $db_name = '';
	private $user_id = 0;
	private $filter = null;
	private $result = null;
	private $search_fields;
	private $search_string;
	private $cache;
	private $table_cols = array('name', 'email', 'firstname', 'surname', 'vcard');

	/** public properties */
	var $primary_key = 'contact_id';
	var $readonly = false;
	var $groups = true;
	var $list_page = 1;
	var $page_size = 10;
	var $group_id = 0;
	var $ready = false;


	/**
	* Object constructor
	*
	* @param object Instance of the rcube_db class
	* @param integer User-ID
	*/
	function __construct($dbconn, $user)
	{
	$this->db = $dbconn;
	$this->db_name = get_table_name('contacts');
	$this->user_id = $user;
	$this->ready = $this->db && !$this->db->is_error();
	}


	/**
	* Save a search string for future listings
	*
	* @param string SQL params to use in listing method
	*/
	function set_search_set($filter)
	{
	$this->filter = $filter;
	$this->cache = null;
	}


	/**
	* Getter for saved search properties
	*
	* @return mixed Search properties used by this class
	*/
	function get_search_set()
	{
	return $this->filter;
	}


	/**
	* Setter for the current group
	* (empty, has to be re-implemented by extending class)
	*/
	function set_group($gid)
	{
	$this->group_id = $gid;
	$this->cache = null;
	}


	/**
	* Reset all saved results and search parameters
	*/
	function reset()
	{
	$this->result = null;
	$this->filter = null;
	$this->search_fields = null;
	$this->search_string = null;
	$this->cache = null;
	}


	/**
	* List all active contact groups of this source
	*
	* @param string Search string to match group name
	* @return array Indexed list of contact groups, each a hash array
	*/
	function list_groups($search = null)
	{
	$results = array();

	if (!$this->groups)
	return $results;

	$sql_filter = $search ? "AND " . $this->db->ilike('name', '%'.$search.'%') : '';

	$sql_result = $this->db->query(
	"SELECT * FROM ".get_table_name('contactgroups').
	" WHERE del<>1".
	" AND user_id=?".
	$sql_filter.
	" ORDER BY name",
	$this->user_id);

	while ($sql_result && ($sql_arr = $this->db->fetch_assoc($sql_result))) {
	$sql_arr['ID'] = $sql_arr['contactgroup_id'];
	$results[] = $sql_arr;
	}

	return $results;
	}


	/**
	* List the current set of contact records
	*
	* @param array List of cols to show
	* @param int Only return this number of records, use negative values for tail
	* @param boolean True to skip the count query (select only)
	* @return array Indexed list of contact records, each a hash array
	*/
	function list_records($cols=null, $subset=0, $nocount=false)
	{
	if ($nocount \|\| $this->list_page <= 1) {
	// create dummy result, we don't need a count now
	$this->result = new rcube_result_set();
	} else {
	// count all records
	$this->result = $this->count();
	}

	$start_row = $subset < 0 ? $this->result->first + $this->page_size + $subset : $this->result->first;
	$length = $subset != 0 ? abs($subset) : $this->page_size;

	if ($this->group_id)
	$join = "LEFT JOIN ".get_table_name('contactgroupmembers')." AS m".
	" ON (m.contact_id = c.".$this->primary_key.")";

	$sql_result = $this->db->limitquery(
	"SELECT * FROM ".$this->db_name." AS c ".$join .
	" WHERE c.del<>1" .
	" AND c.user_id=?" .
	($this->group_id ? " AND m.contactgroup_id=?" : "").
	($this->filter ? " AND (".$this->filter.")" : "") .
	" ORDER BY c.name",
	$start_row,
	$length,
	$this->user_id,
	$this->group_id);

	while ($sql_result && ($sql_arr = $this->db->fetch_assoc($sql_result))) {
	$sql_arr['ID'] = $sql_arr[$this->primary_key];
	// make sure we have a name to display
	if (empty($sql_arr['name']))
	$sql_arr['name'] = $sql_arr['email'];
	$this->result->add($sql_arr);
	}

	$cnt = count($this->result->records);

	// update counter
	if ($nocount)
	$this->result->count = $cnt;
	else if ($this->list_page <= 1) {
	if ($cnt < $this->page_size && $subset == 0)
	$this->result->count = $cnt;
	else
	$this->result->count = $this->_count();
	}

	return $this->result;
	}


	/**
	* Search contacts
	*
	* @param array List of fields to search in
	* @param string Search value
	* @param boolean True for strict (=), False for partial (LIKE) matching
	* @param boolean True if results are requested, False if count only
	* @param boolean True to skip the count query (select only)
	* @return Indexed list of contact records and 'count' value
	*/
	function search($fields, $value, $strict=false, $select=true, $nocount=false)
	{
	if (!is_array($fields))
	$fields = array($fields);

	$add_where = array();
	foreach ($fields as $col) {
	if ($col == 'ID' \|\| $col == $this->primary_key) {
	$ids = !is_array($value) ? explode(',', $value) : $value;
	$ids = join(',', array_map(array($this->db, 'quote'), $ids));
	$add_where[] = 'c.' . $this->primary_key.' IN ('.$ids.')';
	}
	else if ($strict)
	$add_where[] = $this->db->quoteIdentifier($col).'='.$this->db->quote($value);
	else
	$add_where[] = $this->db->ilike($col, '%'.$value.'%');
	}

	if (!empty($add_where)) {
	$this->set_search_set(join(' OR ', $add_where));
	if ($select)
	$this->list_records(null, 0, $nocount);
	else
	$this->result = $this->count();
	}

	return $this->result;
	}


	/**
	* Count number of available contacts in database
	*
	* @return rcube_result_set Result object
	*/
	function count()
	{
	$count = isset($this->cache['count']) ? $this->cache['count'] : $this->_count();

	return new rcube_result_set($count, ($this->list_page-1) * $this->page_size);
	}


	/**
	* Count number of available contacts in database
	*
	* @return int Contacts count
	*/
	private function _count()
	{
	if ($this->group_id)
	$join = "LEFT JOIN ".get_table_name('contactgroupmembers')." AS m".
	" ON (m.contact_id=c.".$this->primary_key.")";

	// count contacts for this user
	$sql_result = $this->db->query(
	"SELECT COUNT(c.contact_id) AS rows".
	" FROM ".$this->db_name." AS c ".$join.
	" WHERE c.del<>1".
	" AND c.user_id=?".
	($this->group_id ? " AND m.contactgroup_id=?" : "").
	($this->filter ? " AND (".$this->filter.")" : ""),
	$this->user_id,
	$this->group_id
	);

	$sql_arr = $this->db->fetch_assoc($sql_result);

	$this->cache['count'] = (int) $sql_arr['rows'];

	return $this->cache['count'];
	}


	/**
	* Return the last result set
	*
	* @return Result array or NULL if nothing selected yet
	*/
	function get_result()
	{
	return $this->result;
	}


	/**
	* Get a specific contact record
	*
	* @param mixed record identifier(s)
	* @return Result object with all record fields or False if not found
	*/
	function get_record($id, $assoc=false)
	{
	// return cached result
	if ($this->result && ($first = $this->result->first()) && $first[$this->primary_key] == $id)
	return $assoc ? $first : $this->result;

	$this->db->query(
	"SELECT * FROM ".$this->db_name.
	" WHERE contact_id=?".
	" AND user_id=?".
	" AND del<>1",
	$id,
	$this->user_id
	);

	if ($sql_arr = $this->db->fetch_assoc()) {
	$sql_arr['ID'] = $sql_arr[$this->primary_key];
	$this->result = new rcube_result_set(1);
	$this->result->add($sql_arr);
	}

	return $assoc && $sql_arr ? $sql_arr : $this->result;
	}


	/**
	* Create a new contact record
	*
	* @param array Assoziative array with save data
	* @return The created record ID on success, False on error
	*/
	function insert($save_data, $check=false)
	{
	if (is_object($save_data) && is_a($save_data, rcube_result_set))
	return $this->insert_recset($save_data, $check);

	$insert_id = $existing = false;

	if ($check)
	$existing = $this->search('email', $save_data['email'], true, false);

	$a_insert_cols = $a_insert_values = array();

	foreach ($this->table_cols as $col)
	if (isset($save_data[$col])) {
	$a_insert_cols[] = $this->db->quoteIdentifier($col);
	$a_insert_values[] = $this->db->quote($save_data[$col]);
	}

	if (!$existing->count && !empty($a_insert_cols)) {
	$this->db->query(
	"INSERT INTO ".$this->db_name.
	" (user_id, changed, del, ".join(', ', $a_insert_cols).")".
	" VALUES (".intval($this->user_id).", ".$this->db->now().", 0, ".join(', ', $a_insert_values).")"
	);

	$insert_id = $this->db->insert_id('contacts');
	}

	// also add the newly created contact to the active group
	if ($insert_id && $this->group_id)
	$this->add_to_group($this->group_id, $insert_id);

	$this->cache = null;

	return $insert_id;
	}


	/**
	* Insert new contacts for each row in set
	*/
	function insert_recset($result, $check=false)
	{
	$ids = array();
	while ($row = $result->next()) {
	if ($insert = $this->insert($row, $check))
	$ids[] = $insert;
	}
	return $ids;
	}


	/**
	* Update a specific contact record
	*
	* @param mixed Record identifier
	* @param array Assoziative array with save data
	* @return True on success, False on error
	*/
	function update($id, $save_cols)
	{
	$updated = false;
	$write_sql = array();

	foreach ($this->table_cols as $col)
	if (isset($save_cols[$col]))
	$write_sql[] = sprintf("%s=%s", $this->db->quoteIdentifier($col),
	$this->db->quote($save_cols[$col]));

	if (!empty($write_sql)) {
	$this->db->query(
	"UPDATE ".$this->db_name.
	" SET changed=".$this->db->now().", ".join(', ', $write_sql).
	" WHERE contact_id=?".
	" AND user_id=?".
	" AND del<>1",
	$id,
	$this->user_id
	);

	$updated = $this->db->affected_rows();
	}

	return $updated;
	}


	/**
	* Mark one or more contact records as deleted
	*
	* @param array Record identifiers
	*/
	function delete($ids)
	{
	if (!is_array($ids))
	$ids = explode(',', $ids);

	$ids = join(',', array_map(array($this->db, 'quote'), $ids));

	// flag record as deleted
	$this->db->query(
	"UPDATE ".$this->db_name.
	" SET del=1, changed=".$this->db->now().
	" WHERE user_id=?".
	" AND contact_id IN ($ids)",
	$this->user_id
	);

	$this->cache = null;

	return $this->db->affected_rows();
	}


	/**
	* Remove all records from the database
	*/
	function delete_all()
	{
	$this->db->query("DELETE FROM {$this->db_name} WHERE user_id=?", $this->user_id);
	$this->cache = null;
	return $this->db->affected_rows();
	}


	/**
	* Create a contact group with the given name
	*
	* @param string The group name
	* @return False on error, array with record props in success
	*/
	function create_group($name)
	{
	$result = false;

	// make sure we have a unique name
	$name = $this->unique_groupname($name);

	$this->db->query(
	"INSERT INTO ".get_table_name('contactgroups').
	" (user_id, changed, name)".
	" VALUES (".intval($this->user_id).", ".$this->db->now().", ".$this->db->quote($name).")"
	);

	if ($insert_id = $this->db->insert_id('contactgroups'))
	$result = array('id' => $insert_id, 'name' => $name);

	return $result;
	}


	/**
	* Delete the given group (and all linked group members)
	*
	* @param string Group identifier
	* @return boolean True on success, false if no data was changed
	*/
	function delete_group($gid)
	{
	// flag group record as deleted
	$sql_result = $this->db->query(
	"UPDATE ".get_table_name('contactgroups').
	" SET del=1, changed=".$this->db->now().
	" WHERE contactgroup_id=?",
	$gid
	);

	$this->cache = null;

	return $this->db->affected_rows();
	}


	/**
	* Rename a specific contact group
	*
	* @param string Group identifier
	* @param string New name to set for this group
	* @return boolean New name on success, false if no data was changed
	*/
	function rename_group($gid, $newname)
	{
	// make sure we have a unique name
	$name = $this->unique_groupname($newname);

	$sql_result = $this->db->query(
	"UPDATE ".get_table_name('contactgroups').
	" SET name=?, changed=".$this->db->now().
	" WHERE contactgroup_id=?",
	$name, $gid
	);

	return $this->db->affected_rows() ? $name : false;
	}


	/**
	* Add the given contact records the a certain group
	*
	* @param string Group identifier
	* @param array List of contact identifiers to be added
	* @return int Number of contacts added
	*/
	function add_to_group($group_id, $ids)
	{
	if (!is_array($ids))
	$ids = explode(',', $ids);

	$added = 0;

	foreach ($ids as $contact_id) {
	$sql_result = $this->db->query(
	"SELECT 1 FROM ".get_table_name('contactgroupmembers').
	" WHERE contactgroup_id=?".
	" AND contact_id=?",
	$group_id,
	$contact_id
	);

	if (!$this->db->num_rows($sql_result)) {
	$this->db->query(
	"INSERT INTO ".get_table_name('contactgroupmembers').
	" (contactgroup_id, contact_id, created)".
	" VALUES (?, ?, ".$this->db->now().")",
	$group_id,
	$contact_id
	);

	if (!$this->db->db_error)
	$added++;
	}
	}

	return $added;
	}


	/**
	* Remove the given contact records from a certain group
	*
	* @param string Group identifier
	* @param array List of contact identifiers to be removed
	* @return int Number of deleted group members
	*/
	function remove_from_group($group_id, $ids)
	{
	if (!is_array($ids))
	$ids = explode(',', $ids);

	$ids = join(',', array_map(array($this->db, 'quote'), $ids));

	$sql_result = $this->db->query(
	"DELETE FROM ".get_table_name('contactgroupmembers').
	" WHERE contactgroup_id=?".
	" AND contact_id IN ($ids)",
	$group_id
	);

	return $this->db->affected_rows();
	}


	/**
	* Check for existing groups with the same name
	*
	* @param string Name to check
	* @return string A group name which is unique for the current use
	*/
	private function unique_groupname($name)
	{
	$checkname = $name;
	$num = 2; $hit = false;

	do {
	$sql_result = $this->db->query(
	"SELECT 1 FROM ".get_table_name('contactgroups').
	" WHERE del<>1".
	" AND user_id=?".
	" AND name=?",
	$this->user_id,
	$checkname);

	// append number to make name unique
	if ($hit = $this->db->num_rows($sql_result))
	$checkname = $name . ' ' . $num++;
	} while ($hit > 0);

	return $checkname;
	}

	}

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