Too many changes

Database.class.php

@@ -1,6 +1,6 @@
 <?php
 
-class Connection {
+class Database {
     private $mysqli = null;
 
     public function __construct()
@@ -21,4 +21,14 @@ class Connection {
     {
         return $this->mysqli->real_escape_string($string);
     }
+
+    public static function execute_query($query="")
+    {
+        return (new self())->query($query);
+    }
+
+    public static function escape_string($string="")
+    {
+        return (new self())->escape($string);
+    }
 }

Session.class.php

@@ -0,0 +1,45 @@
+<?php
+
+session_start();
+
+require_once("Database.class.php");
+
+class Session {
+    public static function generate_id()
+    {
+        return uniqid(uniqid("", true), true);
+    }
+
+    public static function login($user_id)
+    {
+        $session_id = self::generate_id();
+        $_SESSION["gastoadmin"] = $session_id;
+    }
+
+    public static function logout()
+    {
+        unset($_SESSION["gastroadmin"]);
+    }
+
+    public static function is_logged_in()
+    {
+        $query = "SELECT `user_id` FROM `visitor_sessions` WHERE `session_id` = '" . $_SESSION["gastroadmin"] . "';";
+        Database::execute_query($query)
+    }
+
+    public static function remember_visitor($visitor_id)
+    {
+        $session_id = self::generate_id();
+        $_SESSION["gastroguest"] = $session_id;
+    }
+
+    public static function get_visitor($visitor_id)
+    {
+        # TODO
+    }
+
+    public static function forget_visitor($visitor_id)
+    {
+        # TODO
+    }
+}

Setting.class.php

@@ -1,21 +1,19 @@
 <?php
 
-require_once("Connection.class.php");
+require_once("Database.class.php");
 
 class Setting {
-    private $connection = null;
     private $settingKey = "";
 
     public function __construct($setting_key)
     {
-        $this->connection = new Connection();
+        $this->settingKey = Database::escape_string($setting_key);
-        $this->settingKey = $this->connection->escape($setting_key);
     }
 
     public function get($default="")
     {
         $query = "SELECT `setting_value` FROM `settings` WHERE `setting_key` = '" . $this->settingKey . "';";
-        $result = $this->connection->query($query);
+        $result = Database::execute_query($query);
         if ($result->num_rows == 1) {
             return $result->fetch_assoc()["setting_key"];
          } else {
@@ -28,7 +26,7 @@ class Setting {
 
     public function set($value)
     {
-        $escaped_value = $this->connection->escape($value);
+        $escaped_value = Database::escape_string($value);
 
         if ($this->get()) {
             $query = "UPDATE `settings` SET `setting_value` = '" . $escaped_value . "' WHERE `setting_key` = '" . $this->settingKey . "';";
@@ -36,7 +34,7 @@ class Setting {
             $query = "INSERT INTO `settings` (`setting_key`, `setting_value`) VALUES ('". $this->settingKey . "', '" . $escaped_value . "');";
         }
 
-        if (!$this->connection->query($query)) {
+        if (!Database::execute_query($query)) {
             return false;
         }
 

index.php

@@ -1,8 +1,8 @@
 <?php
 
 define("GastroData", true);
-
+include("Session.class.php");
-include("Router.class.php");
+include("Route.class.php");
 
 Route::add('/',function(){
     include("views/index.php");

sql/schema.sql

@@ -16,7 +16,6 @@ CREATE TABLE IF NOT EXISTS `users` (
 
 CREATE TABLE IF NOT EXISTS `user_sessions` (
     `session_id` VARCHAR(255) NOT NULL,
-    `salt` VARCHAR(255) NOT NULL,
     `user_id` INT NOT NULL,
     `expiry` DATETIME NOT NULL,
     PRIMARY KEY (`session_id`),
@@ -67,7 +66,6 @@ CREATE TABLE IF NOT EXISTS `visitors` (
 
 CREATE TABLE IF NOT EXISTS `visitor_sessions` (
     `session_id` VARCHAR(255) NOT NULL,
-    `salt` VARCHAR(255) NOT NULL,
     `visitor_id` VARCHAR(255) NOT NULL,
     `expiry` DATETIME,
     PRIMARY KEY (`session_id`),