first commit

wp-content/plugins/stratum/includes/version-control.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace Stratum;
+
+if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
+
+class Version_Control
+{
+    /** @var string */
+    protected $plugin_version = '';
+
+    /** @var string */
+    protected $dbVersion = '';
+
+    /** @var bool */
+    protected $needUpgrade = false;
+
+    public function __construct(){
+        $settings = Settings::get_instance();
+
+        $this->plugin_version = $settings->getVersion();
+
+        $this->checkVersion();
+        $this->addActions();
+    }
+
+    protected function checkVersion()
+    {
+        $this->dbVersion = $this->getCurrentDatabaseVersion();
+
+        if (version_compare($this->plugin_version, $this->dbVersion, '>')) {
+            $this->needUpgrade = true;
+        }
+    }
+
+    protected function addActions()
+    {
+        if ($this->needUpgrade) {
+            add_action('init', [$this, 'upgrade']);
+        }
+    }
+
+    public function upgrade()
+    {
+        // Nothing to do at the moment
+        $this->afterUpgrade();
+    }
+
+    protected function afterUpgrade()
+    {
+        $this->setCurrentDatabaseVersion($this->plugin_version);
+
+        if (version_compare($this->plugin_version, $this->dbVersion, '!=')) {
+            $this->addVersionToHistory($this->plugin_version);
+        }
+    }
+
+    protected function getCurrentDatabaseVersion()
+    {
+        return get_option('stratum_db_version', '0.0.0');
+    }
+
+    protected function setCurrentDatabaseVersion($version)
+    {
+        update_option('stratum_db_version', $version);
+    }
+
+    protected function addVersionToHistory($version)
+    {
+        $versionHistory = get_option('stratum_db_version_history', []);
+
+        if (!in_array($version, $versionHistory)) {
+            $versionHistory[] = $version;
+            update_option('stratum_db_version_history', $versionHistory);
+        }
+    }
+}