Merge pull request #6 from tonicospinelli/06-front-controller

refactoring: create front controller

Author: tonicospinelli

config/app.php

@@ -3,3 +3,6 @@
 define('DATABASE_DSN', 'sqlite:' . __DIR__ . '/../data/business.db');
 define('DATABASE_USERNAME', null);
 define('DATABASE_PASSWORD', null);
+
+define('TEMPLATE_DIR', __DIR__ . '/../templates');
+define('LIBRARY_DIR', __DIR__ . '/../lib');

lib/controllers/product.php

@@ -0,0 +1,28 @@
+<?php
+
+function productListAction()
+{
+    $products = findAllProducts();
+    include TEMPLATE_DIR . '/products/list.php';
+}
+
+function productAddAction($post)
+{
+    $product = getProductFromPost($post['product']);
+
+    if (addProduct($product)) {
+        $successmsg = 'Product was saved successfully!';
+    } else {
+        $errormsg = 'Product could not be added! :(';
+    }
+    productListAction();
+}
+
+function productRemoveAction($id)
+{
+    if (!removeProduct($id)) {
+        $errormsg = 'Product could not be removed! :(';
+    }
+
+    header('Location: /index.php/products');
+}

lib/controllers/wishlist.php

@@ -0,0 +1,27 @@
+<?php
+
+function wishlistListAction($email)
+{
+    $wishlist = findAllWishProducts($email);
+    include TEMPLATE_DIR . '/wishlists/list.php';
+}
+
+function wishlistAddAction($email, $post)
+{
+    $wishItem = getWishList($post['wish_item']);
+    if (addWishItem($wishItem)) {
+        $successmsg = 'Product was added at wish list successfully!';
+    } else {
+        $errormsg = 'Product could not be added at wishlist! :(';
+    }
+    wishlistListAction($email);
+}
+
+function wishlistRemoveAction($email, $id)
+{
+    if (!removeWishItem($id)) {
+        $errormsg = 'Product could not be removed from wishlist! :(';
+    }
+    header('Location: /wishlist?' . http_build_query(['email' => $_GET['email']]));
+
+}

lib/dbconn.php

@@ -1,7 +1,5 @@
 <?php
 
-require_once __DIR__ . '/../config/app.php';
-
 /**
  * @return PDO
  */

lib/functions.php

@@ -8,5 +8,5 @@
 function removeUrl($uri, $id, array $extraQuery = array())
 {
     $query = http_build_query(array_merge(['remove' => $id], $extraQuery));
-    return sprintf('<a href="/%s?%s">remove</a>', $uri, $query);
+    return sprintf('<a href="%s/remove?%s">remove</a>', $uri, $query);
 }

lib/models/product.php

@@ -26,7 +26,7 @@ function getProductFromPost(array $data)
     return array(
         'id' => (isset($data['id']) ? $data['id'] : null),
         'name' => $data['name'],
-        'price' => $data['price'],
+        'unit_price' => $data['unit_price'],
         'stock' => $data['stock']
     );
 }
@@ -62,3 +62,18 @@ function addProduct(array $product)
     }
     return false;
 }
+
+function removeProduct($id)
+{
+    $db = dbConnect();
+    $db->beginTransaction();
+    try {
+        $stm = $db->prepare('DELETE FROM products WHERE id = ?');
+        $stm->execute([$id]);
+        $db->commit();
+        return true;
+    } catch (Exception $e) {
+        $db->rollBack();
+    }
+    return false;
+}

public/index.php

@@ -0,0 +1,30 @@
+<?php
+
+// load and initialize any global libraries
+require_once __DIR__ . '/../config/app.php';
+require_once LIBRARY_DIR . '/functions.php';
+require_once LIBRARY_DIR . '/dbconn.php';
+require_once LIBRARY_DIR . '/models/product.php';
+require_once LIBRARY_DIR . '/controllers/product.php';
+require_once LIBRARY_DIR . '/models/wishlist.php';
+require_once LIBRARY_DIR . '/controllers/wishlist.php';
+
+// route the request internally
+$uri = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
+
+if ('/index.php/products' === $uri) {
+    productListAction();
+} elseif ('/index.php/products/add' === $uri && isset($_POST['product']) && isValidProduct($_POST['product'])) {
+    productAddAction($_POST);
+} elseif ('/index.php/products/remove' === $uri && isset($_GET['remove'])) {
+    productRemoveAction($_GET['remove']);
+} elseif ('/index.php/wishlist' === $uri && isset($_GET['email'])) {
+    wishlistListAction($_GET['email']);
+} elseif ('/index.php/wishlist/add' === $uri && isset($_GET['email']) && isset($_POST['submit']) && isValidWishList($_POST['wish_item'])) {
+    wishlistAddAction($_GET['email'], $_POST);
+} elseif ('/index.php/wishlist/remove' === $uri && isset($_GET['email']) && isset($_GET['remove'])) {
+    wishlistRemoveAction($_GET['email'], $_GET['remove']);
+} else {
+    header('HTTP/1.1 404 Not Found');
+    echo '<html><body><h1>Page Not Found</h1></body></html>';
+}

public/product.php

@@ -2,7 +2,7 @@
 
 <?php ob_start() ?>
     <h3>Products</h3>
-    <?php if (null !== $errormsg): ?>
+    <?php if (isset($errormsg)): ?>
         <div class="alert error"><?php echo $errormsg; ?> </div>
     <?php elseif (isset($product)): ?>
         <div class="alert success"><?php echo $successmsg; ?></div>
@@ -24,7 +24,7 @@
                 <td><?php echo $product['name']; ?> </td>
                 <td><?php echo $product['unit_price']; ?> </td>
                 <td><?php echo $product['stock']; ?> </td>
-                <td><?php echo removeUrl('product.php', $product['id']); ?> </td>
+                <td><?php echo removeUrl('products', $product['id']); ?> </td>
             </tr>
         <?php endforeach; ?>
         </tbody>

public/wishlist.php

@@ -2,7 +2,7 @@
 
 <?php ob_start() ?>
     <h3><?php echo $title;?></h3>
-    <?php if (null !== $errormsg): ?>
+    <?php if (isset($errormsg)): ?>
         <div class="alert error"><?php echo $errormsg; ?> </div>
     <?php elseif (isset($wishItem)): ?>
         <div class="alert success"><?php echo $successmsg; ?></div>
@@ -26,7 +26,7 @@
                 <?php else: ?>
                     <td>Available</td>
                 <?php endif; ?>
-                <td><?php echo removeUrl('wishlist.php', $wish['id'], ['email' => $_GET['email']]); ?> </td>
+                <td><?php echo removeUrl('wishlist', $wish['id'], ['email' => $_GET['email']]); ?> </td>
             </tr>
         <?php endforeach; ?>
         </tbody>