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<?php
namespace App\Model;
use App\Model\Model;
use ArrayAccess;
use Exception;
use Iterator;
use App\Script\Input;
use DateTime;
use Countable;
/**
* A collection of models
*
* @author Phil Burton <phil@pgburton.com>
*/
class Collection implements ArrayAccess, Iterator, Countable
{
/**
* Raw array of models
*
* @var Model[]
*/
protected $models;
/**
* Current index of array
*
* @var int
*/
protected $position;
/**
* Initalise the collection
*
* @author Phil Burton <phil@pgburton.com>
* @param $array
*/
public function __construct($array = [])
{
// Initalise Index
$this->position = 0;
// Initalise empty array
$this->setFromArray($array);
}
/**
* Reset array to a new array of models
*
* @author Phil Burton <phil@pgburton.com>
* @param array $array
*/
public function setFromArray(array $array)
{
$this->models = [];
foreach ($array as $model) {
$this->models[] = $model;
}
}
/**
* Set the offset
* Only allow values that are an instance of User
*
* @author Phil Burton <phil@pgburton.com>
* @param mixed $offset
* @param mixed $value
*/
public function offsetSet($offset, $value)
{
if (!$value instanceof Model) {
throw new Exception(
'Collection expects a value of type ' . Model::class . ', ' . gettype($value) . ' given'
);
}
if (is_null($offset)) {
$this->models[] = $value;
} else {
$this->models[$offset] = $value;
}
}
/**
* Return true if the given offset exists
* Otherwise return false
*
* @author Phil Burton <phil@pgburton.com>
* @param mixed $offset
*/
public function offsetExists($offset)
{
return isset($this->models[$offset]);
}
/**
* Unset a given offset
*
* @author Phil Burton <phil@pgburton.com>
* @param mixed $offset
*/
public function offsetUnset($offset)
{
unset($this->models[$offset]);
}
/**
* Get the value at a given offset
*
* @author Phil Burton <phil@pgburton.com>
* @param mixed $offset
*/
public function offsetGet($offset)
{
return isset($this->models[$offset]) ? $this->models[$offset] : null;
}
/**
* Return current user
*
* @author Phil Burton <phil@pgburton.com>
* @return Model
*/
public function current()
{
return $this->models[$this->position];
}
/**
* Return true if the current index exists in user array
* Otherwise return false
*
* @author Phil Burton <phil@pgburton.com>"dump"
* @return bool
*/
public function valid()
{
return isset($this->models[$this->position]);
}
/**
* Reset index back to 0
*
* @author Phil Burton <phil@pgburton.com>
*/
public function rewind()
{
$this->position = 0;
}
/**
* Return the current index
*
* @author Phil Burton <phil@pgburton.com>
* @return int
*/
public function key()
{
return $this->position;
}
/**
* Increment index by 1
*
* @author Phil Burton <phil@pgburton.com>
*/
public function next()
{
++$this->position;
}
/**
* Filter by input
*
* @author Phil Burton <phil@pgburton.com>
* @param Input $input
*/
public function filterByInput(Input $input)
{
// filter by time
if ($time = $input->getOption('t')) {
$day = $input->getOption('d');
$this->filterByDateTime($day, $time);
}
if ($location = $input->getOption('l')) {
$this->filterByLocation($location);
}
if ($covers = (int) $input->getOption('c')) {
$this->filterByCovers($covers);
}
}
public function filterByDateTime(string $date, string $time)
{
$dateTime = DateTime::createFromFormat('d/m/y G:i', $date . ' ' . $time);
if (!$dateTime) {
throw new Exception(
'Unable to parse datetime. Required time format: `G:i` (e.g. 05:30). '
. 'Required date format: `d/m/y` (e.g. 22/06/18)'
);
}
$out = [];
foreach ($this->models as $model) {
if ($model->checkDate($dateTime)) {
$out[] = $model;
}
}
$this->models = $out;
}
public function filterByLocation(string $location)
{
$location = substr($location, 0, 2);
$out = [];
foreach ($this->models as $model) {
if ($model->checkLocation($location)) {
$out[] = $model;
}
}
$this->models = $out;
}
public function filterByCovers(int $covers)
{
$out = [];
foreach ($this->models as $model) {
if ($model->checkMaxCovers($covers)) {
$out[] = $model;
}
}
$this->models = $out;
}
public function count()
{
return count($this->models);
}
}
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