Shorten automation table names

[MAILPOET-4465]

mailpoet/lib/Automation/Engine/Migrations/Migrator.php

@@ -14,11 +14,13 @@ class Migrator {
 
   public function __construct() {
     global $wpdb;
-    $this->prefix = $wpdb->prefix . 'mailpoet_automation_';
+    $this->prefix = $wpdb->prefix . 'mailpoet_';
     $this->wpdb = $wpdb;
   }
 
   public function createSchema(): void {
+    $this->removeOldSchema();
+
     $this->runQuery("
       CREATE TABLE {$this->prefix}workflows (
         id int(11) unsigned NOT NULL AUTO_INCREMENT,
@@ -48,6 +50,7 @@ class Migrator {
   }
 
   public function deleteSchema(): void {
+    $this->removeOldSchema();
     $this->runQuery("DROP TABLE IF EXISTS {$this->prefix}workflows");
     $this->runQuery("DROP TABLE IF EXISTS {$this->prefix}workflow_runs");
 
@@ -67,10 +70,16 @@ class Migrator {
   }
 
   public function hasSchema(): bool {
-    $pattern = $this->wpdb->esc_like($this->prefix) . '%';
+    $pattern = $this->wpdb->esc_like("{$this->prefix}workflows") . '%';
     return $this->runQuery("SHOW TABLES LIKE '$pattern'") > 0;
   }
 
+  private function removeOldSchema(): void {
+    $oldPrefix = $this->wpdb->prefix . 'mailpoet_automation_';
+    $this->runQuery("DROP TABLE IF EXISTS {$oldPrefix}workflows");
+    $this->runQuery("DROP TABLE IF EXISTS {$oldPrefix}workflow_runs");
+  }
+
   private function runQuery(string $query): int {
     $this->wpdb->hide_errors();
     // It's a private method and all Queries in this class are safe

mailpoet/lib/Automation/Engine/Storage/WorkflowRunStorage.php

@@ -22,7 +22,7 @@ class WorkflowRunStorage {
     SubjectLoader $subjectLoader
   ) {
     global $wpdb;
-    $this->table = $wpdb->prefix . 'mailpoet_automation_workflow_runs';
+    $this->table = $wpdb->prefix . 'mailpoet_workflow_runs';
     $this->wpdb = $wpdb;
     $this->subjectLoader = $subjectLoader;
   }

mailpoet/lib/Automation/Engine/Storage/WorkflowStorage.php

@@ -17,7 +17,7 @@ class WorkflowStorage {
 
   public function __construct() {
     global $wpdb;
-    $this->table = $wpdb->prefix . 'mailpoet_automation_workflows';
+    $this->table = $wpdb->prefix . 'mailpoet_workflows';
     $this->wpdb = $wpdb;
   }