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<?php
namespace Kirby\Kql;
use Kirby\Toolkit\A;
use ReflectionClass;
use ReflectionMethod;
/**
* Providing help information about
* queried objects, methods, arrays...
*
* @package Kirby KQL
* @author Bastian Allgeier <bastian@getkirby.com>
* @link https://getkirby.com
* @copyright Bastian Allgeier
* @license https://getkirby.com/license
*/
class Help
{
/**
* Provides information about passed value
* depending on its type
*/
public static function for($value): array
{
if (is_array($value) === true) {
return static::forArray($value);
}
if (is_object($value) === true) {
return static::forObject($value);
}
return [
'type' => gettype($value),
'value' => $value
];
}
/**
* @internal
*/
public static function forArray(array $array): array
{
return [
'type' => 'array',
'keys' => array_keys($array),
];
}
/**
* Gathers information for method about
* name, parameters, return type etc.
* @internal
*/
public static function forMethod(object $object, string $method): array
{
$reflection = new ReflectionMethod($object, $method);
$returns = $reflection->getReturnType()?->getName();
$params = [];
foreach ($reflection->getParameters() as $param) {
$name = $param->getName();
$required = $param->isOptional() === false;
$type = $param->hasType() ? $param->getType()->getName() : null;
$default = null;
if ($param->isDefaultValueAvailable()) {
$default = $param->getDefaultValue();
}
$call = '';
if ($type !== null) {
$call = $type . ' ';
}
$call .= '$' . $name;
if ($required === false && $default !== null) {
$call .= ' = ' . var_export($default, true);
}
$p['call'] = $call;
$params[$name] = compact('name', 'type', 'required', 'default', 'call');
}
$call = '.' . $method;
if (empty($params) === false) {
$call .= '(' . implode(', ', array_column($params, 'call')) . ')';
}
return [
'call' => $call,
'name' => $method,
'params' => $params,
'returns' => $returns
];
}
/**
* Gathers informations for each unique method
* @internal
*/
public static function forMethods(object $object, array $methods): array
{
$methods = array_unique($methods);
$reflection = [];
sort($methods);
foreach ($methods as $methodName) {
if (method_exists($object, $methodName) === false) {
continue;
}
$reflection[$methodName] = static::forMethod($object, $methodName);
}
return $reflection;
}
/**
* Retrieves info for objects either from Interceptor (to
* only list allowed methods) or via reflection
* @internal
*/
public static function forObject(object $object): array
{
// get interceptor object to only return info on allowed methods
$interceptor = Interceptor::replace($object);
if ($interceptor instanceof Interceptor) {
return $interceptor->__debugInfo();
}
// for original classes, use reflection
$class = new ReflectionClass($object);
$methods = A::map(
$class->getMethods(),
fn ($method) => static::forMethod($object, $method->getName())
);
return [
'type' => $class->getName(),
'methods' => $methods
];
}
}