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<?php
namespace Laminas\Validator;
use function explode;
use function is_numeric;
use function preg_match;
use function preg_match_all;
use function preg_replace;
use function str_contains;
use function str_replace;
final class GpsPoint extends AbstractValidator
{
public const OUT_OF_BOUNDS = 'gpsPointOutOfBounds';
public const CONVERT_ERROR = 'gpsPointConvertError';
public const INCOMPLETE_COORDINATE = 'gpsPointIncompleteCoordinate';
protected array $messageTemplates = [
self::OUT_OF_BOUNDS => '%value% is out of Bounds.',
self::CONVERT_ERROR => '%value% can not converted into a Decimal Degree Value.',
self::INCOMPLETE_COORDINATE => '%value% did not provided a complete Coordinate',
];
/**
* Returns true if and only if $value meets the validation requirements
*
* If $value fails validation, then this method returns false, and
* getMessages() will return an array of messages that explain why the
* validation failed.
*
* @throws Exception\RuntimeException If validation of $value is impossible.
*/
public function isValid(mixed $value): bool
{
if (! str_contains($value, ',')) {
$this->error(self::INCOMPLETE_COORDINATE, $value);
return false;
}
[$lat, $long] = explode(',', $value);
return $this->isValidCoordinate($lat, 90.0000) && $this->isValidCoordinate($long, 180.000);
}
private function isValidCoordinate(string $value, float $maxBoundary): bool
{
$this->value = $value;
$value = $this->removeWhiteSpace($value);
if ($this->isDMSValue($value)) {
$value = $this->convertValue($value);
} else {
$value = $this->removeDegreeSign($value);
}
if ($value === false) {
$this->error(self::CONVERT_ERROR);
return false;
}
$castedValue = (float) $value;
if (! is_numeric($value) && $castedValue === 0.0) {
$this->error(self::CONVERT_ERROR);
return false;
}
if (! $this->isValueInbound($castedValue, $maxBoundary)) {
$this->error(self::OUT_OF_BOUNDS);
return false;
}
return true;
}
/**
* Determines if the give value is a Degrees Minutes Second Definition
*/
private function isDMSValue(string $value): bool
{
return preg_match('/([°\'"]+[NESW])/', $value) > 0;
}
private function convertValue(string $value): false|float
{
$matches = [];
$result = preg_match_all('/(\d{1,3})°(\d{1,2})\'(\d{1,2}[\.\d]{0,6})"[NESW]/i', $value, $matches);
if ($result === false || $result === 0) {
return false;
}
return $matches[1][0] + $matches[2][0] / 60 + ((float) $matches[3][0]) / 3600;
}
private function removeWhiteSpace(string $value): string
{
return preg_replace('/\s/', '', $value);
}
private function removeDegreeSign(string $value): string
{
return str_replace('°', '', $value);
}
private function isValueInbound(float $value, float $boundary): bool
{
$max = $boundary;
$min = -1 * $boundary;
return $min <= $value && $value <= $max;
}
}