1 files changed, 57 insertions, 0 deletions
diff --git a/includes/Session.php b/includes/Session.php
new file mode 100644
index 0000000..7951d70
--- /dev/null
+++ b/includes/Session.php
@@ -0,0 +1,57 @@
+<?php
+
+class Session
+{
+	private static $instance = null;
+
+	private function __construct()
+	{
+		if (session_status() == PHP_SESSION_NONE)
+			session_start();
+	}
+
+	public static function get()
+	{
+		if (self::$instance == null) {
+			self::$instance = new Session();
+		}
+
+		return self::$instance;
+	}
+
+	public function sign_in(User $user)
+	{
+		$_SESSION['signed_in'] = true;
+		$_SESSION['user_id'] = $user->id;
+		$_SESSION['user_name'] = $user->name;
+	}
+
+	public function sign_out()
+	{
+		session_unset();
+		session_destroy();
+	}
+
+	public function is_signed_in(): bool
+	{
+		return isset($_SESSION['signed_in']);
+	}
+
+	public function get_current_user()
+	{
+		// There is no current user
+		if (!$this->is_signed_in()) {
+			return null;
+		}
+
+		$result = new User();
+
+		if (isset($_SESSION['user_id'])) {
+			$result->get_by_id($_SESSION['user_id']);
+		} else {
+			$result = null;
+		}
+
+		return $result;
+	}
+}
+\ No newline at end of file