<?php
/**
 * EGroupware API - Contacts history and notifications
 *
 * @link http://www.egroupware.org
 * @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
 * @package api
 * @subpackage contacts
 * @copyright (c) 2007-16 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
 * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
 * @version $Id$
 */

namespace EGroupware\Api\Contacts;

use EGroupware\Api;

/**
 * Contacts history and notifications
 */
class Tracking extends Api\Storage\Tracking
{
	/**
	 * Application we are tracking (required!)
	 *
	 * @var string
	 */
	var $app = 'addressbook';
	/**
	 * Name of the id-field, used as id in the history log (required!)
	 *
	 * @var string
	 */
	var $id_field = 'id';
	/**
	 * Name of the field with the creator id, if the creator of an entry should be notified
	 *
	 * @var string
	 */
	var $creator_field = 'creator';
	/**
	 * Name of the field with the id(s) of assinged users, if they should be notified
	 *
	 * @var string
	 */
	var $assigned_field;
	/**
	 * Translate field-name to 2-char history status
	 *
	 * @var array
	 */
	var $field2history = array(
	);

	/**
	 * Should the user (passed to the track method or current user if not passed) be used as sender or get_config('sender')
	 *
	 * @var boolean
	 */
	var $prefer_user_as_sender = false;
	/**
	 * Instance of the bocontacts class calling us
	 *
	 * @access private
	 * @var addressbook_bo
	 */
	var $contacts;

	/**
	 * Constructor
	 *
	 * @param Api\Contacts $bocontacts
	 * @return tracker_tracking
	 */
	function __construct(Api\Contacts $bocontacts)
	{
		$this->contacts = $bocontacts;

		if (is_object($bocontacts->somain) && is_array($bocontacts->somain->db_cols))
		{
			$this->field2history = array_combine($bocontacts->somain->db_cols, $bocontacts->somain->db_cols);

			// no need to store these
			unset($this->field2history['modified']);
			unset($this->field2history['modifier']);
			unset($this->field2history['etag']);
			unset($this->field2history['creator']);
			unset($this->field2history['created']);
			unset($this->field2history['tz']);

			// we currently can only track text
			unset($this->field2history['jpegphoto']);
		}
		// custom fields are now handled by parent::__construct('addressbook')
		parent::__construct('addressbook');
	}

	/**
	 * Get a notification-config value
	 *
	 * @param string $name
	 * 	- 'copy' array of email addresses notifications should be copied too, can depend on $data
	 *  - 'lang' string lang code for copy mail
	 *  - 'sender' string send email address
	 * @param array $data current entry
	 * @param array $old =null old/last state of the entry or null for a new entry
	 * @return mixed
	 */
	function get_config($name,$data,$old=null)
	{
		unset($old);	// not used, but required by function signature

		switch($name)
		{
			case 'copy':
				if ($data['is_contactform'])
				{
					$copy = preg_split('/, ?/',$data['email_contactform']);
					if  ($data['email_copytoreceiver']) $copy[] = $data['email'];
					return $copy;
				}
				break;

			case 'sender':
				if ($data['is_contactform'])
				{
					return $data['email'] ? $data['n_given'].' '.$data['n_family'].' <'.$data['email'].'>' : null;
				}
				break;
		}
		return null;
	}

	/**
	 * Override changes to do some special handling of the text country field vs the country code
	 *
	 * If the country name was changed at all, use the translated name from the country code as the other value.
	 * Otherwise, use country code.
	 *
	 * @internal use only track($data,$old)
	 * @param array $data current entry
	 * @param array $old =null old/last state of the entry or null for a new entry
	 * @param boolean $deleted =null can be set to true to let the tracking know the item got deleted or undelted
	 * @param array $changed_fields =null changed fields from ealier call to $this->changed_fields($data,$old), to not compute it again
	 * @return int number of log-entries made
	 */
	protected function save_history(array $data,array $old=null,$deleted=null,array $changed_fields=null)
	{
		if (is_null($changed_fields))
		{
			$changed_fields = self::changed_fields($data,$old);
		}
		if (!$changed_fields) return 0;

		foreach(array('adr_one_countryname' => 'adr_one_countrycode', 'adr_two_countryname' => 'adr_two_countrycode') as $name => $code)
		{
			// Only codes involved, but old text name is automatically added when loaded
			if($old[$code] && $data[$code] && ($key = array_search($name, $changed_fields)) !== false)
			{
				unset($changed_fields[$key]);
				continue;
			}

			// Code and a text name
			if(in_array($name, $changed_fields) && in_array($code, $changed_fields))
			{
				if($data[$code])
				{
					$data[$name] = $GLOBALS['egw']->country->get_full_name($data[$code], true);
				}
				unset($changed_fields[array_search($code, $changed_fields)]);
			}
		}
		//error_log(__METHOD__.__LINE__.' ChangedFields:'.array2string($changed_fields));
		return parent::save_history($data,$old,$deleted,$changed_fields);
	}

	/**
	 * Get the modified / new message (1. line of mail body) for a given entry, can be reimplemented
	 *
	 * @param array $data
	 * @param array $old
	 * @param int|string $receiver nummeric account_id or email address
	 * @return string
	 */
	protected function get_message($data,$old,$receiver=null)
	{
		unset($receiver);	// not used, but required by function signature

		if (!$data['modified'] || !$old)
		{
			return lang('New contact submitted by %1 at %2',
				Api\Accounts::username($data['creator']),
				$this->datetime($data['created']));
		}
		return lang('Contact modified by %1 at %2',
			Api\Accounts::username($data['modifier']),
			$this->datetime($data['modified']));
	}

	/**
	 * Get the subject of the notification
	 *
	 * @param array $data
	 * @param array $old
	 * @param boolean $deleted =null can be set to true to let the tracking know the item got deleted or undelted
	 * @param int|string $receiver nummeric account_id or email address
	 * @return string
	 */
	protected function get_subject($data,$old,$deleted=null,$receiver=null)
	{
		unset($old, $deleted, $receiver);	// not used, but required by function signature

		if ($data['is_contactform'])
		{
			$prefix = ($data['subject_contactform'] ? $data['subject_contactform'] : lang('Contactform')).': ';
		}
		return $prefix.$this->contacts->link_title($data);
	}

	/**
	 * Get the details of an entry
	 *
	 * @param array|object $data
	 * @param int|string $receiver nummeric account_id or email address
	 * @return array of details as array with values for keys 'label','value','type'
	 */
	function get_details($data,$receiver=null)
	{
		unset($receiver);	// not used, but required by function signature

		foreach($this->contacts->contact_fields as $name => $label)
		{
			if (!$data[$name] && $name != 'owner') continue;

			switch($name)
			{
				case 'n_prefix': case 'n_given': case 'n_middle': case 'n_family': case 'n_suffix':	// already in n_fn
				case 'n_fileas': case 'id': case 'tid':
					break;
				case 'created': case 'modified':
					$details[$name] = array(
						'label' => $label,
						'value' => $this->datetime($data[$name]),
					);
					break;
				case 'bday':
					if ($data[$name])
					{
						$details[$name] = array(
							'label' => $label,
							'value' => Api\DateTime::to($data[$name], true),
						);
					}
					break;
				case 'owner': case 'creator': case 'modifier':
					$details[$name] = array(
						'label' => $label,
						'value' => Api\Accounts::username($data[$name]),
					);
					break;
				case 'cat_id':
					if ($data[$name])
					{
						$cats = array();
						foreach(is_array($data[$name]) ? $data[$name] : explode(',',$data[$name]) as $cat_id)
						{
							$cats[] = $GLOBALS['egw']->cats->id2name($cat_id);
						}
						$details[$name] = array(
							'label' => $label,
							'value' => explode(', ',$cats),
						);
					}
				case 'note':
					$details[$name] = array(
						'label' => $label,
						'value' => $data[$name],
						'type'  => 'multiline',
					);
					break;
				default:
					$details[$name] = array(
						'label' => $label,
						'value' => $data[$name],
					);
					break;
			}
		}
		// add custom fields for given type
		$details += $this->get_customfields($data, $data['tid']);

		return $details;
	}
}