Request and Response objects added

* Request object can be used to fetch query params, headers, cookies, url and request method
* Response object can be used to send a response by setting the response data which will be echoed and status
* RedirectResponse can be used to redirect the page to another location
* All the classes uses static methods that makes it simpler to obtain data without needing to initialize anything

Author: abhayjatindoshi

composer.json

@@ -0,0 +1,18 @@
+{
+    "name": "encryptorcode/php-server-utils",
+    "description": "A bunch of classes used for handling requests and response seamlessly...",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Abhay Jatin Doshi",
+            "email": "[email protected]"
+        }
+    ],
+    "require": {},
+    "autoload": {
+        "psr-4": {
+            "encryptorcode\\server\\": "src/"
+        }
+    }
+}

src/request/Request.php

@@ -0,0 +1,73 @@
+<?php
+namespace encryptorcode\server\request;
+
+class Request{
+    private $method;
+    private $path;
+    private $params;
+    private $headers;
+    private $cookies;
+    
+    private function __construct(){
+        $this->method = $_SERVER["REQUEST_METHOD"];
+        $this->path = $_SERVER["REQUEST_URI"];
+        $this->params = $_GET;
+        $this->headers = array_change_key_case(getallheaders(),CASE_UPPER);
+        $this->cookies = $_COOKIE;
+    }
+
+    private static $request;
+    private static function request() : Request{
+        if(!isset(self::$request)){
+            self::$request = new self();
+        }
+        return self::$request;
+    }
+
+    public static function method() : string{
+        return self::request()->method;
+    }
+
+    public static function path() : string{
+        return self::request()->path;
+    }
+
+    public static function params() : array{
+        return self::request()->params;
+    }
+
+    public static function param($key) : ?string{
+        $params = self::request()->params;
+        if(isset($params[$key])){
+            return $params[$key];
+        } else {
+            return null;
+        }
+    }
+
+    public static function headers() : array{
+        return self::request()->headers;
+    }
+
+    public static function header($key) : ?string{
+        $headers = self::request()->headers;
+        if(isset($headers[$key])){
+            return $headers[$key];
+        } else {
+            return null;
+        }
+    }
+
+    public static function cookies() : array{
+        return self::request()->cookies;
+    }
+
+    public static function cookie($key) : ?string{
+        $cookies = self::request()->cookies;
+        if(isset($cookies[$key])){
+            return $cookies[$key];
+        } else {
+            return null;
+        }
+    }
+}

src/response/RedirectResponse.php

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+<?php
+namespace encryptorcode\server\response;
+
+class RedirectResponse extends Response{
+    
+    private $redirectUrl;
+
+    public function __construct(?string $redirectUrl){
+        $this->redirectUrl = $redirectUrl;
+    }
+
+    public function respond() : void{
+        header("Location: $this->redirectUrl");
+        exit();
+    }
+}

src/response/Response.php

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+<?php
+namespace encryptorcode\server\response;
+
+abstract class Response{
+    
+    private $data;
+    private $status;
+    
+    public function __construct(?string $data, $status=200){
+        $this->data = $data;
+        $this->status = $status;
+        
+        if((!isset($data) || $data == "") && ($status == 200 || $status == 201)){
+            $this->status = 204;
+        }
+    }
+
+    public function respond() : void{
+        http_response_code($this->status);
+        echo $this->data;
+    }
+}