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Filename : RouteCollectionInterface.php
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<?php

/**
 * This file is part of CodeIgniter 4 framework.
 *
 * (c) CodeIgniter Foundation <admin@codeigniter.com>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace CodeIgniter\Router;

use Closure;

/**
 * Interface RouteCollectionInterface
 *
 * A Route Collection's sole job is to hold a series of routes. The required
 * number of methods is kept very small on purpose, but implementors may
 * add a number of additional methods to customize how the routes are defined.
 *
 * The RouteCollection provides the Router with the routes so that it can determine
 * which controller should be ran.
 */
interface RouteCollectionInterface
{
    /**
     * Adds a single route to the collection.
     *
     * @param array|Closure|string $to
     * @param array                $options
     *
     * @return mixed
     */
    public function add(string $from, $to, ?array $options = null);

    /**
     * Registers a new constraint with the system. Constraints are used
     * by the routes as placeholders for regular expressions to make defining
     * the routes more human-friendly.
     *
     * You can pass an associative array as $placeholder, and have
     * multiple placeholders added at once.
     *
     * @param array|string $placeholder
     * @param string       $pattern
     *
     * @return mixed
     */
    public function addPlaceholder($placeholder, ?string $pattern = null);

    /**
     * Sets the default namespace to use for Controllers when no other
     * namespace has been specified.
     *
     * @return mixed
     */
    public function setDefaultNamespace(string $value);

    /**
     * Sets the default controller to use when no other controller has been
     * specified.
     *
     * @return mixed
     */
    public function setDefaultController(string $value);

    /**
     * Sets the default method to call on the controller when no other
     * method has been set in the route.
     *
     * @return mixed
     */
    public function setDefaultMethod(string $value);

    /**
     * Tells the system whether to convert dashes in URI strings into
     * underscores. In some search engines, including Google, dashes
     * create more meaning and make it easier for the search engine to
     * find words and meaning in the URI for better SEO. But it
     * doesn't work well with PHP method names....
     *
     * @return mixed
     */
    public function setTranslateURIDashes(bool $value);

    /**
     * If TRUE, the system will attempt to match the URI against
     * Controllers by matching each segment against folders/files
     * in APPPATH/Controllers, when a match wasn't found against
     * defined routes.
     *
     * If FALSE, will stop searching and do NO automatic routing.
     */
    public function setAutoRoute(bool $value): self;

    /**
     * Sets the class/method that should be called if routing doesn't
     * find a match. It can be either a closure or the controller/method
     * name exactly like a route is defined: Users::index
     *
     * This setting is passed to the Router class and handled there.
     *
     * @param callable|null $callable
     */
    public function set404Override($callable = null): self;

    /**
     * Returns the 404 Override setting, which can be null, a closure
     * or the controller/string.
     *
     * @return Closure|string|null
     */
    public function get404Override();

    /**
     * Returns the name of the default controller. With Namespace.
     *
     * @return string
     */
    public function getDefaultController();

    /**
     * Returns the name of the default method to use within the controller.
     *
     * @return string
     */
    public function getDefaultMethod();

    /**
     * Returns the current value of the translateURIDashes setting.
     *
     * @return mixed
     */
    public function shouldTranslateURIDashes();

    /**
     * Returns the flag that tells whether to autoRoute URI against Controllers.
     *
     * @return bool
     */
    public function shouldAutoRoute();

    /**
     * Returns the raw array of available routes.
     *
     * @return mixed
     */
    public function getRoutes();

    /**
     * Returns the current HTTP Verb being used.
     *
     * @return string
     */
    public function getHTTPVerb();

    /**
     * Attempts to look up a route based on it's destination.
     *
     * If a route exists:
     *
     *      'path/(:any)/(:any)' => 'Controller::method/$1/$2'
     *
     * This method allows you to know the Controller and method
     * and get the route that leads to it.
     *
     *      // Equals 'path/$param1/$param2'
     *      reverseRoute('Controller::method', $param1, $param2);
     *
     * @param array ...$params
     *
     * @return false|string
     */
    public function reverseRoute(string $search, ...$params);

    /**
     * Determines if the route is a redirecting route.
     */
    public function isRedirect(string $from): bool;

    /**
     * Grabs the HTTP status code from a redirecting Route.
     */
    public function getRedirectCode(string $from): int;
}