388 lines
11 KiB
PHP
388 lines
11 KiB
PHP
<?php
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/*
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+-------------------------------------------------------------------------+
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| Database driver for the Calendar Plugin |
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| Version 0.3 beta |
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| This program is free software; you can redistribute it and/or modify |
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| it under the terms of the GNU General Public License version 2 |
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| as published by the Free Software Foundation. |
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| This program is distributed in the hope that it will be useful, |
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| but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| GNU General Public License for more details. |
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| You should have received a copy of the GNU General Public License along |
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| with this program; if not, write to the Free Software Foundation, Inc., |
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| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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| |
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+-------------------------------------------------------------------------+
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| Author: Lazlo Westerhof <hello@lazlo.me> |
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| Thomas Bruederli <roundcube@gmail.com> |
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+-------------------------------------------------------------------------+
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*/
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class database_driver extends calendar_driver
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{
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// features this backend supports
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public $attendees = true;
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public $attachments = true;
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private $rc;
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private $cal;
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private $calendars = array();
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private $calendar_ids = '';
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private $free_busy_map = array('free' => 0, 'busy' => 1, 'out-of-office' => 2, 'outofoffice' => 2);
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/**
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* Default constructor
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*/
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public function __construct($cal)
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{
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$this->cal = $cal;
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$this->rc = $cal->rc;
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$this->_read_calendars();
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}
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/**
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* Read available calendars for the current user and store them internally
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*/
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private function _read_calendars()
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{
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if (!empty($this->rc->user->ID)) {
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$calendar_ids = array();
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$result = $this->rc->db->query(
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"SELECT * FROM calendars
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WHERE user_id=?",
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$this->rc->user->ID
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);
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while ($result && ($arr = $this->rc->db->fetch_assoc($result))) {
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$this->calendars[$arr['calendar_id']] = $arr;
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$calendar_ids[] = $this->rc->db->quote($arr['calendar_id']);
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}
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$this->calendar_ids = join(',', $calendar_ids);
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}
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}
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/**
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* Get a list of available calendars from this source
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*/
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public function list_calendars()
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{
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// attempt to create a default calendar for this user
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if (empty($this->calendars)) {
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if ($this->create_calendar(array('name' => 'Default', 'color' => 'cc0000')))
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$this->_read_calendars();
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}
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return $this->calendars;
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}
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/**
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* Create a new calendar assigned to the current user
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*
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* @param array Hash array with calendar properties
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* name: Calendar name
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* color: The color of the calendar
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* @return mixed ID of the calendar on success, False on error
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*/
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public function create_calendar($prop)
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{
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$result = $this->rc->db->query(
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"INSERT INTO calendars
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(user_id, name, color)
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VALUES (?, ?, ?)",
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$this->rc->user->ID,
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$prop['name'],
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$prop['color']
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);
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if ($result)
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return $this->rc->db->insert_id('calendars');
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return false;
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}
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/**
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* Add a single event to the database
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*
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* @param array Hash array with event properties
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* @see Driver:new_event()
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*/
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public function new_event($event)
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{
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if (!empty($this->calendars)) {
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if ($event['calendar'] && !$this->calendars[$event['calendar']])
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return false;
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if (!$event['calendar'])
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$event['calendar'] = reset(array_keys($this->calendars));
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$event = $this->_save_preprocess($event);
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$query = $this->rc->db->query(sprintf(
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"INSERT INTO events
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(calendar_id, created, changed, uid, start, end, all_day, recurrence, title, description, location, categories, free_busy, priority, alarms)
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VALUES (?, %s, %s, ?, %s, %s, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
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$this->rc->db->now(),
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$this->rc->db->now(),
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$this->rc->db->fromunixtime($event['start']),
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$this->rc->db->fromunixtime($event['end'])
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),
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$event['calendar'],
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strval($event['uid']),
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intval($event['allday']),
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$event['recurrence'],
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strval($event['title']),
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strval($event['description']),
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strval($event['location']),
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strval($event['categories']),
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intval($event['free_busy']),
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intval($event['priority']),
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$event['alarms']
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);
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return $this->rc->db->insert_id('events');
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}
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return false;
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}
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/**
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* Update an event entry with the given data
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*
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* @param array Hash array with event properties
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* @see Driver:new_event()
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*/
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public function edit_event($event)
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{
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if (!empty($this->calendars)) {
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$event = $this->_save_preprocess($event);
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$query = $this->rc->db->query(sprintf(
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"UPDATE events
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SET changed=%s, start=%s, end=%s, all_day=?, recurrence=?, title=?, description=?, location=?, categories=?, free_busy=?, priority=?, alarms=?
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WHERE event_id=?
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AND calendar_id IN (" . $this->calendar_ids . ")",
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$this->rc->db->now(),
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$this->rc->db->fromunixtime($event['start']),
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$this->rc->db->fromunixtime($event['end'])
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),
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intval($event['allday']),
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$event['recurrence'],
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strval($event['title']),
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strval($event['description']),
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strval($event['location']),
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strval($event['categories']),
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intval($event['free_busy']),
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intval($event['priority']),
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$event['alarms'],
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$event['id']
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);
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return $this->rc->db->affected_rows($query);
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}
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return false;
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}
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/**
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* Convert save data to be used in SQL statements
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*/
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private function _save_preprocess($event)
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{
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// compose vcalendar-style recurrencue rule from structured data
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$rrule = '';
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if (is_array($event['recurrence'])) {
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foreach ($event['recurrence'] as $k => $val) {
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$k = strtoupper($k);
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switch ($k) {
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case 'UNTIL':
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$val = gmdate('Ymd\THis', $val);
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break;
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}
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$rrule .= $k . '=' . $val . ';';
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}
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}
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else if (is_string($event['recurrence']))
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$rrule = $event['recurrence'];
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$event['recurrence'] = rtrim($rrule, ';');
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$event['free_busy'] = intval($this->free_busy_map[strtolower($event['free_busy'])]);
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$event['allday'] = $event['allday'] ? 1 : 0;
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return $event;
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}
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/**
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* Move a single event
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*
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* @param array Hash array with event properties
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* @see Driver:move_event()
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*/
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public function move_event($event)
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{
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if (!empty($this->calendars)) {
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$query = $this->rc->db->query(sprintf(
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"UPDATE events
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SET changed=%s, start=%s, end=%s, all_day=?
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WHERE event_id=?
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AND calendar_id IN (" . $this->calendar_ids . ")",
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$this->rc->db->now(),
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$this->rc->db->fromunixtime($event['start']),
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$this->rc->db->fromunixtime($event['end'])
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),
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$event['allday'] ? 1 : 0,
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$event['id']
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);
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return $this->rc->db->affected_rows($query);
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}
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return false;
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}
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/**
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* Resize a single event
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*
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* @param array Hash array with event properties
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* @see Driver:resize_event()
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*/
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public function resize_event($event)
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{
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if (!empty($this->calendars)) {
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$query = $this->rc->db->query(sprintf(
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"UPDATE events
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SET changed=%s, start=%s, end=%s
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WHERE event_id=?
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AND calendar_id IN (" . $this->calendar_ids . ")",
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$this->rc->db->now(),
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$this->rc->db->fromunixtime($event['start']),
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$this->rc->db->fromunixtime($event['end'])
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),
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$event['id']
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);
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return $this->rc->db->affected_rows($query);
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}
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return false;
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}
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/**
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* Remove a single event from the database
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*
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* @param array Hash array with event properties
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* @see Driver:remove_event()
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*/
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public function remove_event($event)
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{
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if (!empty($this->calendars)) {
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$query = $this->rc->db->query(
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"DELETE FROM events
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WHERE event_id=?
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AND calendar_id IN (" . $this->calendar_ids . ")",
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$event['id']
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);
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return $this->rc->db->affected_rows($query);
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}
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return false;
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}
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/**
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* Get event data
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*
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* @see Driver:load_events()
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*/
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public function load_events($start, $end, $calendars = null)
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{
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if (empty($calendars))
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$calendars = array_keys($this->calendars);
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else if (is_string($calendars))
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$calendars = explode(',', $calendars);
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// only allow to select from calendars of this use
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$calendars = array_intersect($calendars, array_keys($this->calendars));
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$events = array();
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$free_busy_map = array_flip($this->free_busy_map);
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if (!empty($calendars)) {
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$result = $this->rc->db->query(sprintf(
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"SELECT * FROM events
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WHERE calendar_id IN (%s)
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AND start >= %s AND end <= %s",
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$this->calendar_ids,
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$this->rc->db->fromunixtime($start),
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$this->rc->db->fromunixtime($end)
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));
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while ($result && ($event = $this->rc->db->fetch_assoc($result))) {
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$event['id'] = $event['event_id'];
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$event['start'] = strtotime($event['start']);
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$event['end'] = strtotime($event['end']);
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$event['free_busy'] = $free_busy_map[$event['free_busy']];
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$event['calendar'] = $event['calendar_id'];
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// parse recurrence rule
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if ($event['recurrence'] && preg_match_all('/([A-Z]+)=([^;]+);?/', $event['recurrence'], $m, PREG_SET_ORDER)) {
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$event['recurrence'] = array();
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foreach ($m as $rr) {
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if (is_numeric($rr[2]))
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$rr[2] = intval($rr[2]);
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else if ($rr[1] == 'UNTIL')
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$rr[2] = strtotime($rr[2]);
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$event['recurrence'][$rr[1]] = $rr[2];
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}
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}
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unset($event['event_id'], $event['calendar_id']);
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$events[] = $event;
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}
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}
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return $events;
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}
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/**
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* Search events
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*
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* @see Driver:search_events()
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*/
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public function search_events($start, $end, $query, $calendars = null)
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{
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}
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/**
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* Save an attachment related to the given event
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*/
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function add_attachment($attachment, $event_id)
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{
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// TBD.
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return false;
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}
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/**
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* Remove a specific attachment from the given event
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*/
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function remove_attachment($attachment, $event_id)
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{
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// TBD.
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return false;
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}
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/**
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* Remove the given category
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*/
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public function remove_category($name)
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{
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// TBD. alter events accordingly
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return false;
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}
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/**
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* Update/replace a category
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*/
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public function replace_category($oldname, $name, $color)
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{
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// TBD. alter events accordingly
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return false;
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}
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}
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