From fffd25c45482463c3fdcc580d265a2102f9b8621 Mon Sep 17 00:00:00 2001
From: Augusto Gunsch <augusto@augustogunsch.com>
Date: Wed, 27 Jul 2022 20:26:50 +0200
Subject: [PATCH] Add request handler

---
 index.js                    |  6 ++----
 index.php                   | 15 ++++++++++++++-
 src/Http/Request.php        | 24 ++++++++++++++++++++++++
 src/Http/RequestHandler.php | 36 ++++++++++++++++++++++++++++++++++++
 src/Http/Route.php          | 26 ++++++++++++++++++++++++++
 src/View/Product.php        | 13 +++++++++++--
 6 files changed, 113 insertions(+), 7 deletions(-)
 create mode 100644 src/Http/Request.php
 create mode 100644 src/Http/RequestHandler.php
 create mode 100644 src/Http/Route.php

diff --git a/index.js b/index.js
index aec870e..5c70a1e 100644
--- a/index.js
+++ b/index.js
@@ -4,8 +4,6 @@ const loadItems = () => {
 	const xhttp = new XMLHttpRequest();
 
 	xhttp.onload = function() {
-		console.log(this.responseText);
-
 		const products = JSON.parse(this.responseText);
 
 		const boxes = products.map(product =>
@@ -23,7 +21,7 @@ const loadItems = () => {
 		productsList.innerHTML = boxes.join('\n');
 	}
 
-	xhttp.open('GET', 'src/View/Product', true);
+	xhttp.open('GET', 'products', true);
 	xhttp.send();
 }
 loadItems();
@@ -39,7 +37,7 @@ const deleteSelected = () => {
 		loadItems();
 	}
 
-	xhttp.open('DELETE', 'src/View/Product', true);
+	xhttp.open('DELETE', 'products', true);
 	xhttp.send();
 }
 
diff --git a/index.php b/index.php
index 7ed317b..29017af 100644
--- a/index.php
+++ b/index.php
@@ -1,4 +1,17 @@
 <?php
 require 'autoload.php';
 
-echo json_encode(ProductList\Model\Product::selectAll());
+use ProductList\Http\Request;
+use ProductList\Http\RequestHandler;
+use ProductList\Http\Route;
+
+$request = new Request($_SERVER);
+$handler = new RequestHandler($request);
+
+$handler->registerRoutes([
+    new Route('GET', 'products', ['ProductList\View\Product', 'listAll'])
+]);
+
+$handler->setIndex('index.html');
+
+$handler->handle();
diff --git a/src/Http/Request.php b/src/Http/Request.php
new file mode 100644
index 0000000..59fd43a
--- /dev/null
+++ b/src/Http/Request.php
@@ -0,0 +1,24 @@
+<?php
+namespace ProductList\Http;
+
+class Request
+{
+    private $method;
+    private $uri;
+
+    public function getMethod()
+    {
+        return $this->method;
+    }
+
+    public function getUri()
+    {
+        return $this->uri;
+    }
+
+    public function __construct(array $params)
+    {
+        $this->uri = basename($params['REQUEST_URI']);
+        $this->method = $params['REQUEST_METHOD'];
+    }
+}
diff --git a/src/Http/RequestHandler.php b/src/Http/RequestHandler.php
new file mode 100644
index 0000000..cf61e6c
--- /dev/null
+++ b/src/Http/RequestHandler.php
@@ -0,0 +1,36 @@
+<?php
+namespace ProductList\Http;
+
+class RequestHandler
+{
+    private $index;
+    private $request;
+    private $routes;
+
+    public function __construct(Request $request)
+    {
+        $this->request = $request;
+    }
+
+    public function setIndex($index)
+    {
+        $this->index = $index;
+    }
+
+    public function registerRoutes(array $routes)
+    {
+        $this->routes = $routes;
+    }
+
+    public function handle()
+    {
+        foreach ($this->routes as $route) {
+            if ($route->matches($this->request)) {
+                $route->execute($this->request);
+                return;
+            }
+        }
+
+        readfile($this->index);
+    }
+}
diff --git a/src/Http/Route.php b/src/Http/Route.php
new file mode 100644
index 0000000..38446f5
--- /dev/null
+++ b/src/Http/Route.php
@@ -0,0 +1,26 @@
+<?php
+namespace ProductList\Http;
+
+class Route
+{
+    private $method;
+    private $uri;
+    private $view;
+
+    public function __construct(string $method, string $uri, array $view)
+    {
+        $this->method = $method;
+        $this->uri = $uri;
+        $this->view = $view;
+    }
+
+    public function matches(Request $request)
+    {
+        return $this->method === $request->getMethod() && $this->uri === $request->getUri();
+    }
+
+    public function execute(Request $request)
+    {
+        call_user_func($this->view, $request);
+    }
+}
diff --git a/src/View/Product.php b/src/View/Product.php
index de0c3f2..03867e0 100644
--- a/src/View/Product.php
+++ b/src/View/Product.php
@@ -1,4 +1,13 @@
 <?php
-require '../../Autoload.php';
+namespace ProductList\View;
 
-echo json_encode(ProductList\Model\Product::selectAll());
+use ProductList\Http\Request;
+use ProductList\Model\Product as ProductModel;
+
+class Product
+{
+    public static function listAll(Request $request)
+    {
+        echo json_encode(ProductModel::selectAll());
+    }
+}