Add deleting mechanism

index.php

@@ -9,7 +9,8 @@ $request = new Request($_SERVER);
 $handler = new RequestHandler($request);
 
 $handler->registerRoutes([
-    new Route('GET', 'products', ['ProductList\View\Product', 'listAll']),
+    new Route('GET', 'products', ['ProductList\View\Product', 'list']),
+    new Route('DELETE', 'products', ['ProductList\View\Product', 'delete']),
     new Route('GET', 'add-product', function() { readfile('static/add-product.html'); }),
     new Route('GET', '', function() { readfile('static/index.html'); }),
 ]);

src/Exception/NotFoundException.php

@@ -0,0 +1,4 @@
+<?php
+namespace ProductList\Exception;
+
+class NotFoundException extends \Exception {}

src/Http/Request.php

@@ -5,6 +5,7 @@ class Request
 {
     private $method;
     private $uri;
+    private $queryString;
 
     public function getMethod()
     {
@@ -16,9 +17,19 @@ class Request
         return $this->uri;
     }
 
+    public function getQueryString()
+    {
+        return $this->queryString;
+    }
+
     public function __construct(array $params)
     {
-        $this->uri = basename($params['REQUEST_URI']);
+        $uri_base = trim($params['REQUEST_URI'], '?'.$params['QUERY_STRING']);
+        $uri_base = trim(urldecode($uri_base), '/');
+        $this->uri = explode('/', $uri_base);
+
         $this->method = $params['REQUEST_METHOD'];
+
+        parse_str($params['QUERY_STRING'], $this->queryString);
     }
 }

src/Http/Route.php

@@ -10,7 +10,7 @@ class Route
     public function __construct(string $method, string $uri, array|\Closure $view)
     {
         $this->method = $method;
-        $this->uri = $uri;
+        $this->uri = explode('/', $uri);
         $this->view = $view;
     }
 

src/Model/Book.php

@@ -66,7 +66,24 @@ class Book extends Product
             $this->setVariationId($conn->insert_id);
             return $conn->insert_id;
         } else {
-            throw new Exception("Unable to insert object");
+            throw new \Exception("Unable to insert object");
         }
     }
+
+    public function delete($conn = null)
+    {
+        if ($conn === null) {
+            $conn = Database::connect();
+        }
+
+        $variationId = $this->getVariationId();
+        $stmt = $conn->prepare('DELETE FROM '.BOOK.' WHERE id = ?');
+        $stmt->bind_param('i', $variationId);
+
+        if ($stmt->execute() === false) {
+            throw new \Exception("Unable to delete product with id '$id'");
+        }
+
+        parent::delete($conn);
+    }
 }

src/Model/DVD.php

@@ -69,4 +69,21 @@ class DVD extends Product
             throw new Exception("Unable to insert object");
         }
     }
+
+    public function delete($conn = null)
+    {
+        if ($conn === null) {
+            $conn = Database::connect();
+        }
+
+        $variationId = $this->getVariationId();
+        $stmt = $conn->prepare('DELETE FROM '.DVD.' WHERE id = ?');
+        $stmt->bind_param('i', $variationId);
+
+        if ($stmt->execute() === false) {
+            throw new \Exception("Unable to delete product with id '$id'");
+        }
+
+        parent::delete($conn);
+    }
 }

src/Model/Furniture.php

@@ -92,7 +92,24 @@ class Furniture extends Product
             $this->setVariationId($conn->insert_id);
             return $conn->insert_id;
         } else {
-            throw new Exception("Unable to insert object");
+            throw new \Exception("Unable to insert object");
         }
     }
+
+    public function delete($conn = null)
+    {
+        if ($conn === null) {
+            $conn = Database::connect();
+        }
+
+        $variationId = $this->getVariationId();
+        $stmt = $conn->prepare('DELETE FROM '.FURNITURE.' WHERE id = ?');
+        $stmt->bind_param('i', $variationId);
+
+        if ($stmt->execute() === false) {
+            throw new \Exception("Unable to delete product with id '$id'");
+        }
+
+        parent::delete($conn);
+    }
 }

src/Model/Model.php

@@ -5,6 +5,7 @@ trait Model
 {
     abstract public static function fromRow($row) : self;
     abstract public function insert($conn = null) : int; // should return id
+    abstract public function delete($conn = null);
     abstract private static function getSelectAllQuery() : string;
 
     public static function selectAll($conn = null) : array

src/Model/Product.php

@@ -1,6 +1,8 @@
 <?php
 namespace ProductList\Model;
 
+use ProductList\Exception\NotFoundException;
+
 abstract class Product implements \JsonSerializable
 {
     use Model;
@@ -44,6 +46,11 @@ abstract class Product implements \JsonSerializable
         return $this->productId;
     }
 
+    public function getVariationId()
+    {
+        return $this->variationId;
+    }
+
     public function setVariationId($id)
     {
         $this->variationId = $id;
@@ -56,6 +63,43 @@ abstract class Product implements \JsonSerializable
 
     abstract public function getFormatedAttr();
 
+    public function delete($conn = null)
+    {
+        if ($conn === null) {
+            $conn = Database::connect();
+        }
+
+        $productId = $this->getProductId();
+        $stmt = $conn->prepare('DELETE FROM '.PRODUCT.' WHERE id = ?');
+        $stmt->bind_param('i', $productId);
+
+        if ($stmt->execute() === false) {
+            throw new \Exception("Unable to delete product with id '$id'");
+        }
+    }
+
+    public static function fromId($id, $conn = null) : self
+    {
+        if ($conn === null) {
+            $conn = Database::connect();
+        }
+
+        $stmt = $conn->prepare(self::getSelectAllQuery().' WHERE '.PRODUCT.'.id = ?');
+        $stmt->bind_param('i', $id);
+
+        if ($stmt->execute() === true) {
+            $row = $stmt->get_result()->fetch_assoc();
+
+            if($row === null) {
+                throw new NotFoundException("No product with id '$id'");
+            }
+
+            return self::fromRow($row);
+        } else {
+            throw new \Exception("Unable to select object");
+        }
+    }
+
     public static function fromRow($row) : self
     {
         if ($row['size'] !== null) {
@@ -65,7 +109,7 @@ abstract class Product implements \JsonSerializable
         } elseif ($row['height'] !== null) {
             return Furniture::fromRow($row);
         } else {
-            throw new Exception("Product without a type");
+            throw new \Exception("Product without a type");
         }
     }
 
@@ -77,7 +121,7 @@ abstract class Product implements \JsonSerializable
                 FROM '.PRODUCT.'
                 LEFT JOIN '.DVD.' ON '.PRODUCT.'.id = '.DVD.'.product_id
                 LEFT JOIN '.BOOK.' ON '.PRODUCT.'.id = '.BOOK.'.product_id
-                LEFT JOIN '.FURNITURE.' ON '.PRODUCT.'.id = '.FURNITURE.'.product_id;';
+                LEFT JOIN '.FURNITURE.' ON '.PRODUCT.'.id = '.FURNITURE.'.product_id';
     }
 
     public function insert($conn = null) : int
@@ -100,7 +144,7 @@ abstract class Product implements \JsonSerializable
             $this->setProductId($conn->insert_id);
             return $conn->insert_id;
         } else {
-            throw new Exception("Unable to insert object");
+            throw new \Exception("Unable to insert object");
         }
     }
 

src/View/Product.php

@@ -3,11 +3,48 @@ namespace ProductList\View;
 
 use ProductList\Http\Request;
 use ProductList\Model\Product as ProductModel;
+use ProductList\Exception\NotFoundException;
 
 class Product
 {
-    public static function listAll(Request $request)
+    public static function list(Request $request)
     {
         echo json_encode(ProductModel::selectAll());
     }
+
+    public static function delete(Request $request)
+    {
+        $queryString = $request->getQueryString();
+
+        if (array_key_exists('id', $queryString)) {
+            $ids = explode(',', $queryString['id']);
+            $ids = array_map('intval', $ids);
+
+            foreach($ids as $id) {
+                try {
+                    $product = ProductModel::fromId($id);
+
+                    try {
+                        $product->delete();
+                    } catch (\Exception $e) {
+                        http_response_code(500);
+                        echo $e->getMessage();
+                        return;
+                    }
+
+                } catch (NotFoundException $e) {
+                    http_response_code(404);
+                    echo $e->getMessage();
+                    return;
+                }
+            }
+        } else {
+            http_response_code(400);
+            echo 'Missing parameter "id".';
+        }
+    }
+
+    public static function add(Request $request)
+    {
+    }
 }

static/index.js

@@ -37,7 +37,7 @@ const deleteSelected = () => {
 		loadItems();
 	}
 
-	xhttp.open('DELETE', 'products', true);
+	xhttp.open('DELETE', `products?id=${values.join(',')}`, true);
 	xhttp.send();
 }