Implement session management

6 files changed, 69 insertions, 2 deletions

diff --git a/public/delete/index.php b/public/delete/index.php
index e07129a..9864c9a 100644
--- a/public/delete/index.php
+++ b/public/delete/index.php
@@ -3,6 +3,7 @@
 declare(strict_types=1);
 
 use DTS\BookmarkRepository;
+use DTS\Session;
 use function DTS\Functions\respondAndExit;
 use function DTS\Functions\redirectAndExit;
 
@@ -10,6 +11,8 @@ require_once(__DIR__.'/../../autoload.php');
 
 $config = require_once(__DIR__.'/../../config.php');
 
+$session = Session::getInstance();
+
 if (filter_input(INPUT_SERVER, 'REQUEST_METHOD') !== 'POST') {
     respondAndExit(405, 'Method Not Allowed');
 }
@@ -28,4 +31,6 @@ if (!$bookmarks->delete($bookmark)) {
     respondAndExit(500, 'Internal Server Error');
 }
 
+$session->set('message', 'Bookmark Deleted');
+
 redirectAndExit('/');
diff --git a/public/index.php b/public/index.php
index 7453506..025c9ec 100644
--- a/public/index.php
+++ b/public/index.php
@@ -3,6 +3,7 @@
 declare(strict_types=1);
 
 use DTS\BookmarkRepository;
+use DTS\Session;
 use DTS\Template;
 use function DTS\Functions\respondAndExit;
 
@@ -10,6 +11,8 @@ require_once(__DIR__.'/../autoload.php');
 
 $config = require_once(__DIR__.'/../config.php');
 
+$session = Session::getInstance();
+
 $bookmarks = new BookmarkRepository($config['path_to_repository']);
 
 $template = new Template($config['path_to_templates']);
@@ -24,6 +27,11 @@ if ($tag !== null) {
 
 $bookmarks->sort($sort === 'asc');
 
-$html = $template->render('index', compact('bookmarks'));
+$message = $session->get('message');
+
+$html = $template->render('index', compact(
+    'bookmarks',
+    'message'
+));
 
 respondAndExit(200, 'OK', $html);
diff --git a/public/store/index.php b/public/store/index.php
index 2a84c59..45765d5 100644
--- a/public/store/index.php
+++ b/public/store/index.php
@@ -4,13 +4,16 @@ declare(strict_types=1);
 
 use DTS\Bookmark;
 use DTS\BookmarkRepository;
-use function DTS\Functions\respondAndExit;
+use DTS\Session;
 use function DTS\Functions\redirectAndExit;
+use function DTS\Functions\respondAndExit;
 
 require_once(__DIR__.'/../../autoload.php');
 
 $config = require_once(__DIR__.'/../../config.php');
 
+$session = Session::getInstance();
+
 if (filter_input(INPUT_SERVER, 'REQUEST_METHOD') !== 'POST') {
     respondAndExit(405, 'Method Not Allowed');
 }
@@ -30,4 +33,6 @@ if (!$bookmarks->add($bookmark)) {
     respondAndExit(500, 'Internal Server Error');
 }
 
+$session->set('message', 'Bookmark Added');
+
 redirectAndExit('/');
diff --git a/public/update/index.php b/public/update/index.php
index fa6b482..50d0dcf 100644
--- a/public/update/index.php
+++ b/public/update/index.php
@@ -3,6 +3,7 @@
 declare(strict_types=1);
 
 use DTS\BookmarkRepository;
+use DTS\Session;
 use function DTS\Functions\respondAndExit;
 use function DTS\Functions\redirectAndExit;
 
@@ -10,6 +11,8 @@ require_once(__DIR__.'/../../autoload.php');
 
 $config = require_once(__DIR__.'/../../config.php');
 
+$session = Session::getInstance();
+
 if (filter_input(INPUT_SERVER, 'REQUEST_METHOD') !== 'POST') {
     respondAndExit(405, 'Method Not Allowed');
 }
@@ -32,4 +35,6 @@ if (!$bookmarks->update($bookmark)) {
     respondAndExit(500, 'Internal Server Error');
 }
 
+$session->set('message', 'Bookmark Updated');
+
 redirectAndExit('/');
diff --git a/src/DTS/Session.php b/src/DTS/Session.php
new file mode 100644
index 0000000..956f4e5
--- /dev/null
+++ b/src/DTS/Session.php
@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DTS;
+
+class Session
+{
+    private static ?self $instance = null;
+
+    private array $session;
+
+    public static function getInstance()
+    {
+        if (!self::$instance) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
+    }
+
+    private function __construct()
+    {
+        session_start();
+
+        foreach ($_SESSION as $key => $value) {
+            $this->session[$key] = $value;
+            unset($_SESSION[$key]);
+        }
+    }
+
+    public function set(string $key, string $value): void
+    {
+        $this->session[$key] = $_SESSION[$key] = $value;
+    }
+
+    public function get(string $key): ?string
+    {
+        return $this->session[$key] ?? null;
+    }
+}
diff --git a/src/templates/index.php b/src/templates/index.php
index ed84fd4..148a173 100644
--- a/src/templates/index.php
+++ b/src/templates/index.php
@@ -6,6 +6,9 @@
         <title>Bookmarks</title>
     </head>
     <body>
+        <?php if ($message) { ?>
+            <p><?php echo $message; ?></p>
+        <?php } ?>
         <a href="/create">Add</a>
         <ul>
             <?php foreach ($bookmarks as $bookmark) { ?>