# Route2 🛣️

A simple routing system for PHP web applications.

### Features:
- **Simplicity**: Easily map URLs to specific callback functions.
- **Parameters**: Flexible URL handling with parameters (e.g., `/user/$id`).
- **Middleware**: Register functions to execute **before** and **after** routes.
- **Grouping**: Organize related routes and apply group-specific middleware.
- **Lightweight**: A single-file, no-frills routing solution with zero dependencies.

### Example:
```php
// Initialize the router. This method must be called before defining any routes
Route2::setup(); 

// Define a GET route
Route2::get('/home', function () {
    echo "Welcome to the homepage!";
});

// Define a route with a parameter
Route2::get('/user/$id', function ($id) {
   echo "User ID: $id";
});

// Define a route with an optional parameter
Route2::get('/user/$id?', function ($id = null) {
   echo $id ? "User ID: $id" : "No User ID provided.";
});

// Defining middlewares
Route2::before(function () {
    echo "Middleware executed before the route callback.";
});
Route2::after(function () {
    echo "Middleware executed after the route callback.";
});

// Define a route with a middleware attached to it
Route2::post('/submit', function () {
    echo "Form submitted!";
}, function () {
    echo "Middleware executed before the callback.";
});

// Group routes under a common prefix
Route2::group('/admin', function () {
    // Middlewares defined here will not affect the routes outside this group
    Route2::before(function () {
        echo "Admin Middleware executed.";
    });
    Route2::get('/dashboard', function () {
        echo "Admin Dashboard";
    });
    Route2::post('/settings', function () {
        echo "Admin Settings";
    });
});
```

## Installing

### Composer:

Composer needs to know where to locate the package. Add the repository to your project by declaring it in the `composer.json` file.
```json
{
    "repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/WilliamAAK/Route2"
        }
    ],
    "require": {
        "williamaak/route2": "dev-master"
    }
}
```
Fetch the package by running

    composer install

### Manual:

Its all in a single file; include it in your project like so.

```php
require '/YourPath/Route2.php'
```

## Using Route2

To get started quickly you may copy this into your project.

### Classic mode

```php
<?php

require __DIR__.'/vendor/autoload.php';

use WilliamAAK\Http\Route2;

Route2::setup();

Route2::get('/$world?', function($world = 'World') {
    echo "Hello, $world!";
});

// Since no route was found show a 404 page
http_response_code(404);
?>
<h1>Page not found!</h1>
```

### FrankenPHP worker mode

Boot your application once and keep it in memory by using [worker mode](https://frankenphp.dev/docs/worker/). Simply do what you would normally do but inside the handler.

```php
<?php
// public/index.php

// Prevent worker script termination when a client connection is interrupted
ignore_user_abort(true);

// Boot your app
require __DIR__.'/vendor/autoload.php';

use WilliamAAK\Http\Route2;

// Handler outside the loop for better performance (doing less work)
$handler = static function () {
    // Called when a request is received,
    // superglobals, php://input and the like are reset
    Route2::setup(
        $_SERVER['REQUEST_URI']
    );

    Route2::get('/$world?', function($world = 'World') {
        echo "Hello, $world!";
    });

    // Since no route was found show a 404 page
    http_response_code(404);
    ?>
    <h1>Page not found!</h1>
    <?php
};

$maxRequests = (int)($_SERVER['MAX_REQUESTS'] ?? 0);
for ($nbRequests = 0; !$maxRequests || $nbRequests < $maxRequests; ++$nbRequests) {
    $keepRunning = \frankenphp_handle_request($handler);

    // Call the garbage collector to reduce the chances of it being triggered in the middle of a page generation
    gc_collect_cycles();

    if (!$keepRunning) break;
}
```

## Accessing your routes

The simplest way to access your routes is to put the file in your folder and run it.

For example if you request ```http://your.site/yourscript.php/your/route``` the route will be automatically adjust to `/your/route`.

## Rewriting requests

Want to hide that pesky script name (e.g `index.php`) from the URL?

### FrankenPHP:

It is recommended that you use [FrankenPHP](https://frankenphp.dev); modern PHP app server. This behavior is enabled by default.

### NGINX:

With PHP already installed and configured you may add this to the server block of your configuration to make requests that don't match a file on your server to be redirected to `index.php`

```nginx
location / {
    try_files $uri $uri/ /index.php?$query_string;
}
```

### Apache:

Make sure that mod_rewrite is installed on Apache. On a unix system you can just do `a2enmod rewrite`

This snippet in your .htaccess will ensure that all requests for files and folders that does not exists will be redirected to `index.php`

```apache
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]
```