<?php

namespace Kirby\Kql;

use Kirby\Toolkit\Query as BaseQuery;

class Query extends BaseQuery
{
	protected function interceptor($object)
	{
		return Interceptor::replace($object);
	}

	/**
	 * Resolves the query if anything
	 * can be found. Otherwise returns null.
	 *
	 * @param string $query
	 * @return mixed
	 */
	protected function resolve(string $query)
	{
		// direct key access in arrays
		if (is_array($this->data) === true && array_key_exists($query, $this->data) === true) {
			$value = $this->data[$query];

			// closure resolver
			if (is_a($value, 'Closure') === true) {
				$value = $value();
			}

			return $this->interceptor($value);
		}

		$parts = $this->parts($query);
		$data  = $this->data;
		$value = null;

		while (count($parts)) {
			$part   = array_shift($parts);
			$info   = $this->part($part);
			$method = $info['method'];
			$value  = null;

			if (is_array($data)) {
				$value = $data[$method] ?? null;
			} elseif (is_object($data)) {
				$data = $this->interceptor($data);

				if (method_exists($data, $method) || method_exists($data, '__call')) {
					$value = $data->$method(...$info['args']);
				}
			} elseif (is_scalar($data)) {
				return $data;
			} else {
				return null;
			}

			if (is_a($value, 'Closure') === true) {
				$value = $value(...$info['args']);
			}

			if (is_array($value) === true) {
				$data = $value;
			} elseif (is_object($value) === true) {
				$data = $this->interceptor($value);
			}
		}

		return $value;
	}
}