<?php

namespace Kiri\Di;

use JetBrains\PhpStorm\Pure;
use ReflectionAttribute;
use ReflectionClass;
use ReflectionMethod;
use ReflectionProperty;

trait Attributes
{


	private array $_classTarget = [];
	private array $_classMethodNote = [];
	private array $_classMethod = [];
	private array $_classPropertyNote = [];
	private array $_classProperty = [];


	private array $_mapping = [
		'attributeClass' => [
			'className' => [
				'property' => [
					''
				],
				'method'   => [

				]
			]
		]
	];


	/**
	 * @param ReflectionClass $class
	 */
	protected function setTargetNote(ReflectionClass $class)
	{
		$className = $class->getName();
		if (!isset($this->_classTarget[$className])) {
			$this->_classTarget[$className] = [];
		}
		foreach ($class->getAttributes() as $attribute) {
			if (!class_exists($attribute->getName())) {
				continue;
			}
			$this->_classTarget[$className][] = $attribute->newInstance();

			$this->setMappingClass($attribute, $className);
		}
	}


	/**
	 * @param ReflectionAttribute $attribute
	 * @param string $class
	 */
	private function setMappingClass(ReflectionAttribute $attribute, string $class)
	{
		if (!isset($this->_mapping[$attribute->getName()])) {
			$this->_mapping[$attribute->getName()] = [];
		}
		$this->_mapping[$attribute->getName()][$class] = [];
	}


	/**
	 * @param ReflectionAttribute $attribute
	 * @param string $class
	 * @param string $method
	 */
	private function setMappingMethod(ReflectionAttribute $attribute, string $class, string $method)
	{
		$this->setMappingClass($attribute, $class);

		$mapping = $this->_mapping[$attribute->getName()][$class];
		if (!isset($mapping['method'])) {
			$mapping['method'] = [];
		}
		if (!in_array($method, $mapping['method'])) {
			$mapping['method'][] = $method;
		}
		$this->_mapping[$attribute->getName()][$class] = $mapping;
	}


	/**
	 * @param ReflectionAttribute $attribute
	 * @param string $class
	 * @param string $property
	 */
	private function setMappingProperty(ReflectionAttribute $attribute, string $class, string $property)
	{
		$this->setMappingClass($attribute, $class);

		$mapping = $this->_mapping[$attribute->getName()][$class];
		if (!isset($mapping['property'])) {
			$mapping['property'] = [];
		}
		if (!in_array($property, $mapping['property'])) {
			$mapping['property'][] = $property;
		}
		$this->_mapping[$attribute->getName()][$class] = $mapping;
	}


	/**
	 * @param mixed $class
	 * @return array
	 */
	public function getTargetNote(mixed $class): array
	{
		if (!is_string($class)) {
			$class = $class::class;
		}
		return $this->_classTarget[$class] ?? [];
	}


	/**
	 * @param ReflectionClass $class
	 */
	protected function setMethodNote(ReflectionClass $class)
	{
		$className = $class->getName();
		$this->_classMethodNote[$className] = $this->_classMethod[$className] = [];
		foreach ($class->getMethods(ReflectionMethod::IS_FINAL | ReflectionMethod::IS_PRIVATE
			| ReflectionMethod::IS_PUBLIC | ReflectionMethod::IS_PROTECTED | ReflectionMethod::IS_ABSTRACT
		) as $ReflectionMethod) {
			$this->_classMethod[$className][$ReflectionMethod->getName()] = $ReflectionMethod;
			$this->_classMethodNote[$className][$ReflectionMethod->getName()] = [];
			foreach ($ReflectionMethod->getAttributes() as $attribute) {
				if (!class_exists($attribute->getName())) {
					continue;
				}
				$this->_classMethodNote[$className][$ReflectionMethod->getName()][] = $attribute->newInstance();

				$this->setMappingMethod($attribute, $className, $ReflectionMethod->getName());
			}
		}
	}


	/**
	 * @param string $class
	 * @param string $method
	 * @return bool
	 */
	public function hasMethod(string $class, string $method): bool
	{
		return isset($this->_classMethod[$class]) && isset($this->_classMethod[$class][$method]);
	}


	/**
	 * @param ReflectionClass $class
	 * @return array
	 */
	#[Pure] public function getMethodNote(ReflectionClass $class): array
	{
		return $this->_classMethodNote[$class->getName()] ?? [];
	}


	/**
	 * @param ReflectionClass $class
	 */
	protected function setPropertyNote(ReflectionClass $class)
	{
		$className = $class->getName();
		$this->_classProperty[$className] = $this->_classPropertyNote[$className] = [];
		foreach ($class->getProperties(ReflectionProperty::IS_PRIVATE | ReflectionProperty::IS_PUBLIC |
			ReflectionProperty::IS_PROTECTED) as $ReflectionMethod) {
			$this->_classProperty[$className][$ReflectionMethod->getName()] = $ReflectionMethod;
			foreach ($ReflectionMethod->getAttributes() as $attribute) {
				if (!class_exists($attribute->getName())) {
					continue;
				}
				$this->_classPropertyNote[$className][$ReflectionMethod->getName()] = $attribute->newInstance();

				$this->setMappingProperty($attribute, $className, $ReflectionMethod->getName());
			}
		}
	}


	/**
	 * @param string $attribute
	 * @param string|null $class
	 * @return array[]
	 */
	public function getAttributeTrees(string $attribute, string $class = null): array
	{
		$mapping = $this->_mapping[$attribute] ?? [];
		if (empty($mapping) || empty($class)) {
			return $mapping;
		}
		return $mapping[$class] ?? [];
	}


	/**
	 * @param string $attribute
	 * @param string $class
	 * @param string|null $method
	 * @return array
	 */
	public function getMethodByAnnotation(string $attribute, string $class, string $method = null): array
	{
		$class = $this->getAttributeTrees($attribute, $class);
		if (empty($class) || !isset($class['method']) || empty($method)) {
			return $class['method'] ?? [];
		}
		return $class['method'][$method] ?? [];
	}


	/**
	 * @param string $attribute
	 * @param string $class
	 * @param string $method
	 * @return array
	 */
	public function getPropertyByAnnotation(string $attribute, string $class, string $method): array
	{
		$class = $this->getAttributeTrees($attribute, $class);
		if (empty($class) || !isset($class['property'])) {
			return [];
		}
		return $class['property'][$method] ?? [];
	}


	/**
	 * @param ReflectionClass|string $class
	 * @return array
	 * @throws \ReflectionException
	 */
	public function getMethods(ReflectionClass|string $class): array
	{
		if (is_string($class)) {
			$class = $this->getReflect($class);
		}
		return $this->_classMethod[$class->getName()] ?? [];
	}


	/**
	 * @param ReflectionClass $class
	 * @return ReflectionProperty[]
	 */
	#[Pure] public function getProperty(ReflectionClass $class): array
	{
		return $this->_classProperty[$class->getName()] ?? [];
	}


	/**
	 * @param ReflectionClass $class
	 * @return array
	 */
	#[Pure] public function getPropertyNote(ReflectionClass $class): array
	{
		return $this->_classPropertyNote[$class->getName()] ?? [];
	}


}