first commit

code/web/backend/application/model/UserRoleModel.php

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+<?php
+
+/**
+ * Class UserRoleModel
+ *
+ * This class contains everything that is related to up- and downgrading accounts.
+ */
+class UserRoleModel
+{
+	/**
+	 * Upgrades / downgrades the user's account. Currently it's just the field user_account_type in the database that
+	 * can be 1 or 2 (maybe "basic" or "premium"). Put some more complex stuff in here, maybe a pay-process or whatever
+	 * you like.
+	 *
+	 * @param $type
+	 *
+	 * @return bool
+	 */
+	public static function changeUserRole($type)
+	{
+		if (!$type) {
+			return false;
+		}
+
+		// save new role to database
+		if (self::saveRoleToDatabase($type)) {
+			Session::add('feedback_positive', Text::get('FEEDBACK_ACCOUNT_TYPE_CHANGE_SUCCESSFUL'));
+			return true;
+		} else {
+			Session::add('feedback_negative', Text::get('FEEDBACK_ACCOUNT_TYPE_CHANGE_FAILED'));
+			return false;
+		}
+	}
+
+	/**
+	 * Writes the new account type marker to the database and to the session
+	 *
+	 * @param $type
+	 *
+	 * @return bool
+	 */
+	public static function saveRoleToDatabase($type)
+	{
+		// if $type is not 1 or 2
+		if (!in_array($type, [1, 2])) {
+			return false;
+		}
+
+		$database = DatabaseFactory::getFactory()->getConnection();
+
+		$query = $database->prepare("UPDATE users SET user_account_type = :new_type WHERE user_id = :user_id LIMIT 1");
+		$query->execute(array(
+			':new_type' => $type,
+			':user_id' => Session::get('user_id')
+		));
+
+		if ($query->rowCount() == 1) {
+			// set account type in session
+			Session::set('user_account_type', $type);
+			return true;
+		}
+
+		return false;
+	}
+}