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<?php
/**
* SeparableRoom.class.php - model class for a separable room
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* @author Moritz Strohm <strohm@data-quest.de>
* @copyright 2018-2019
* @license http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
* @category Stud.IP
* @package resources
* @since 4.5
*
* @property int $id database column
* @property string $building_id database column
* @property string $name database column
* @property int $mkdate database column
* @property int $chdate database column
* @property SimpleORMapCollection|SeparableRoomPart[] $parts has_many SeparableRoomPart
* @property Building $building belongs_to Building
*/
class SeparableRoom extends SimpleORMap
{
protected static function configure($config = [])
{
$config['db_table'] = 'separable_rooms';
$config['belongs_to']['building'] = [
'class_name' => Building::class,
'foreign_key' => 'building_id',
'assoc_func' => 'find'
];
$config['has_many']['parts'] = [
'class_name' => SeparableRoomPart::class,
'assoc_foreign_key' => 'separable_room_id',
'on_store' => 'store',
'on_delete' => 'delete'
];
parent::configure($config);
}
/**
* Creates a SeparableRoom object from a list of room objects.
* @param string $building_id
* @param array $rooms
* @param string $name
* @return SeparableRoom|null
*/
public static function createFromRooms(string $building_id, array $rooms = [], $name = '')
{
if (count($rooms) === 0) {
return null;
}
//Check if all array items are room objects:
$room_names = [];
foreach ($rooms as $room) {
if (!($room instanceof Room)) {
throw new InvalidArgumentException(
_('Teilbare Räume dürfen nur aus Raum-Objekten bestehen!')
);
}
$room_names[] = $room->name;
}
//Now we can create the separable room:
if (!$name) {
//First we create a common name from all the room names.
$common_name = '';
if (count($room_names) > 1) {
$name_position = 0;
$current_character = '';
//Loop over all rooms until $common_name doesn't grow anymore
while ($current_character !== null) {
$current_character = $room_names[0][$name_position];
foreach ($room_names as $room_name) {
if ($room_name[$name_position] != $current_character) {
//At this point the name is diverting.
break 2;
}
}
//The current character is the same for all room names.
$common_name .= $current_character;
$name_position++;
}
} else {
$common_name = $room_names[0];
}
$name = $common_name;
}
//At this point we have either found the common name
//or $common_name is empty.
$separable_room = new SeparableRoom();
$separable_room->building_id = $building_id;
if ($name) {
$separable_room->name = $name;
} else {
$separable_room->name = _('Teilbarer Raum');
}
if (!$separable_room->store()) {
throw new SeparableRoomException(
_('Fehler beim Speichern des teilbaren Raumes!')
);
}
$successfully_stored = 0;
foreach ($rooms as $room) {
$part = new SeparableRoomPart();
$part->separable_room_id = $separable_room->id;
$part->room_id = $room->id;
if ($part->store()) {
$successfully_stored++;
}
}
if ($successfully_stored < count($rooms)) {
throw new SeparableRoomException(
sprintf(
_('Nur %1$d von %2$d Räumen konnten dem teilbaren Raum zugeordnet werden!'),
$successfully_stored,
count($rooms)
)
);
}
return $separable_room;
}
public static function findByRoomPart(Room $room)
{
return self::findOneBySql(
'INNER JOIN separable_room_parts
ON separable_room_parts.separable_room_id = separable_rooms.id
WHERE
separable_room_parts.room_id = :room_id',
[
'room_id' => $room->id
]
);
}
public function findOtherRoomParts(array $known_parts = [])
{
$known_part_ids = [];
foreach ($known_parts as $known_part) {
if ($known_part instanceof Room) {
$known_part_ids[] = $known_part->id;
}
}
$resources = Resource::findBySql(
'INNER JOIN separable_room_parts
ON resources.id = separable_room_parts.room_id
WHERE
room_id NOT IN ( :known_part_ids )
AND
separable_room_id = :separable_room_id',
[
'known_part_ids' => $known_part_ids,
'separable_room_id' => $this->id
]
);
if (!$resources) {
//There are no other room parts.
return [];
}
$room_parts = [];
foreach ($resources as $resource) {
$resource = $resource->getDerivedClassInstance();
if ($resource instanceof Room) {
$room_parts[] = $resource;
}
}
return $room_parts;
}
}
|
