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<?php
namespace App\Script;
use Exception;
/**
* Input handler for CLI arugments and options
*
* @author Phil Burton <phil@pgburton.com>
*/
class Input
{
/**
* Available CLI options
* f filename - input file with the vendors data
* d day - delivery day (dd/mm/yy)
* t time - delivery time in 24h format (hh:mm)
* l location - delivery location (postcode without spaces, e.g. NW43QB)
* c covers - number of people to feed
*
* @var string
*/
protected $availableOptions = 'f:d::t::l::c::';
/**
* The loaded CLI options
*
* @var string
*/
protected $options;
/**
* Parse arguments and options
*
* @author Phil Burton <phil@pgburton.com>
*/
public function __construct()
{
$this->loadOptions();
}
/**
* Load options, make sure required options are set
* Throw an exception if input data is badly formatted
*
* @author Phil Burton <phil@pgburton.com>
*/
protected function loadOptions()
{
$this->options = getopt($this->getOptionString());
if (!array_key_exists('f', $this->options)) {
throw new Exception('Filename Option `-f` is required');
}
// If only a day or a time is given, we throw exception as we need neither or both
if ((array_key_exists('d', $this->options) <=> array_key_exists('t', $this->options)) !== 0) {
throw new Exception('Both day and time options (`-d` and `-t`) are required for time based filtering');
}
if (array_key_exists('c', $this->options) && !is_numeric($this->options['c'])) {
throw new Exception('Value for option `-c` must be an integer');
}
if (array_key_exists('l', $this->options) && is_numeric($this->options['l'])) {
throw new Exception('Value for option `-l` must be a string');
}
}
/**
* Return the option string for the options we want to load
*
* @author Phil Burton <phil@pgburton.com>
* @return string
*/
public function getOptionString(): string
{
return $this->availableOptions;
}
/**
* Return an option value
* In it doesn't exist return false
*
* @author Phil Burton <phil@pgburton.com>
* @param string $key
* @return mixed
*/
public function getOption(string $key)
{
if (!array_key_exists($key, $this->options)) {
return false;
}
return $this->options[$key];
}
}
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