<?php
declare(strict_types=1);


namespace Http\Route;


use Annotation\Aspect;
use Closure;
use Exception;
use Http\Exception\RequestException;
use JetBrains\PhpStorm\Pure;
use Kiri\Di\NoteManager;
use Kiri\Events\EventProvider;
use Kiri\Exception\NotFindClassException;
use Kiri\IAspect;
use Kiri\Kiri;
use ReflectionException;
use Server\Events\OnAfterWorkerStart;
use Server\RequestInterface;

/**
 * Class Node
 * @package Kiri\Kiri\Route
 */
class Node
{

    public string $path = '';
    public int $index = 0;

    /** @var string[] */
    public array $method = [];

    /** @var Node[] $childes */
    public array $childes = [];

    public array $group = [];

    private string $_error = '';

    private string $_dataType = '';

    /** @var array<string, array|Closure|null> */
    private array $_handler = [];

    public string $htmlSuffix = '.html';
    public bool $enableHtmlSuffix = false;

    /** @var array<string,mixed> */
    public array $namespace = [];

    /** @var array<string,mixed> */
    public array $middleware = [];

    public string $sourcePath = '';

    /** @var array|Closure */
    public Closure|array $callback = [];

    private string $_alias = '';


    /**
     * @param string $dataType
     */
    public function setDataType(string $dataType)
    {
        $this->_dataType = $dataType;
    }


    /**
     * @throws NotFindClassException
     * @throws ReflectionException
     */
    public function __construct(public Router $router)
    {
        $eventDispatcher = di(EventProvider::class);
        $eventDispatcher->on(OnAfterWorkerStart::class, [$this, 'setParameters']);
    }


    /**
     * @param string $data
     * @return mixed
     */
    public function unpack(string $data): mixed
    {
        if ($this->_dataType == 'json') {
            return json_decode($data, true);
        }
        if ($this->_dataType == 'serializes') {
            return unserialize($data);
        }
        return $data;
    }


    /**
     * @param string|array|Closure $handler
     * @param string $method
     * @param string $path
     * @return Node
     * @throws ReflectionException
     */
    public function setHandler(string|array|Closure $handler, string $method, string $path): static
    {
        $this->sourcePath = '/' . ltrim($path, '/');
        if (is_string($handler) && str_contains($handler, '@')) {
            $handler = $this->splitHandler($handler);
        } else if ($handler != null && !is_callable($handler, true)) {
            $this->_error = 'Controller is con\'t exec.';
            return $this;
        }
        $this->_handler[$method] = [$handler, $this->resolveMethodParams($handler)];
        return $this;
    }


    /**
     * @param $dispatcher
     * @return array
     * @throws \ReflectionException
     */
    private function resolveMethodParams($dispatcher): array
    {
        $container = Kiri::getDi();
        if ($dispatcher instanceof Closure) {
            $_injectParameters = $container->getFunctionParameters($dispatcher);
        } else {
            $_injectParameters = $container->getMethodParameters(
                $dispatcher[0]::class, $dispatcher[1]);
        }
        return $_injectParameters;
    }


    /**
     * @param string $handler
     * @return array
     * @throws ReflectionException
     */
    private function splitHandler(string $handler): array
    {
        list($controller, $action) = explode('@', $handler);
        if (!class_exists($controller) && !empty($this->namespace)) {
            $controller = implode('\\', $this->namespace) . '\\' . $controller;
        }
        return [Kiri::getDi()->get($controller), $action];
    }


    /**
     * @param string $method
     * @param $handler
     * @param $_injectParameters
     * @throws NotFindClassException
     * @throws ReflectionException
     * @throws Exception
     */
    private function injectMiddleware(string $method, $handler, $_injectParameters): void
    {
        $callback = (new Pipeline())->overall($this->router->getMiddleware())
            ->through($this->middleware[$method] ?? [])
            ->through(MiddlewareManager::get($handler))
            ->send($_injectParameters)
            ->then($handler);

        HandlerProviders::add($method, $this->sourcePath, $callback);
    }


    /**
     * @throws ReflectionException
     * @throws NotFindClassException
     */
    public function setParameters(): static
    {
        if (empty($this->_handler)) {
            return $this;
        }
        foreach ($this->_handler as $method => $dispatcher) {
            $this->injectMiddleware($method, ...$dispatcher);
        }
        $this->_handler = [];
        return $this;
    }


    /**
     * @return array
     */
    #[Pure] protected function annotation(): array
    {
        return $this->getMiddleWares();
    }


    /**
     * @param RequestInterface $request
     * @return bool
     */
    #[Pure] public function methodAllow(RequestInterface $request): bool
    {
        if (!in_array($request->getMethod(), $this->method)) {
            return true;
        }
        return $this->method == 'any';
    }

    /**
     * @return bool
     * @throws Exception
     */
    public function checkSuffix(): bool
    {
        if ($this->enableHtmlSuffix) {
            $url = request()->getUri()->getPath();
            $nowLength = strlen($this->htmlSuffix);
            if (strpos($url, $this->htmlSuffix) !== strlen($url) - $nowLength) {
                return false;
            }
        }
        return true;
    }


    /**
     * @return string
     * 错误信息
     */
    public function getError(): string
    {
        return $this->_error;
    }

    /**
     * @param Node $node
     * @return Node
     */
    public function addChild(Node $node): Node
    {
        $this->childes[] = $node;
        return $node;
    }


    /**
     * @param string $search
     * @return Node|null
     * @throws Exception
     */
    public function findNode(string $search): ?Node
    {
        if (empty($this->childes)) {
            return null;
        }
        foreach ($this->childes as $val) {
            if ($search == $val->path) {
                return $val;
            }
        }
        return null;
    }


    /**
     * @param string $alias
     * @return $this
     * 别称
     */
    public function alias(string $alias): static
    {
        $this->_alias = $alias;
        return $this;
    }


    /**
     * @return string
     */
    public function getAlias(): string
    {
        return $this->_alias;
    }


    /**
     * @param $method
     * @param Closure|array $class
     * @return $this
     */
    public function addMiddleware($method, Closure|array $class): static
    {
        if (empty($class)) return $this;
        if (!isset($this->middleware[$method])) {
            $this->middleware[$method] = [];
        }
        foreach ($class as $closure) {
            if (in_array($closure, $this->middleware[$method])) {
                continue;
            }
            $this->middleware[$method][] = $closure;
        }
        return $this;
    }


    /**
     * @return array
     */
    public function getMiddleWares(): array
    {
        return $this->middleware;
    }


    /**
     * @return mixed
     * @throws Exception
     */
    public function dispatch(): mixed
    {
        if (!in_array(request()->getMethod(), $this->method)) {
            throw new RequestException('<h2>HTTP 405 Method allow</h2><hr><i>Powered by Swoole</i>', 405);
        }
        $handlerProviders = HandlerProviders::get($this->sourcePath, request()->getMethod());
        if (empty($handlerProviders)) {
            throw new RequestException('<h2>HTTP 404 Not Found</h2><hr><i>Powered by Swoole</i>', 404);
        }
        return $handlerProviders->interpreter();
    }

}