Add workflow count to automation listing page

[MAILPOET-4540]

mailpoet/assets/js/src/automation/config.ts

@@ -4,7 +4,9 @@ declare global {
       root: string;
       nonce: string;
     };
+    mailpoet_workflow_count: number;
   }
 }
 
 export const api = window.mailpoet_automation_api;
+export const workflowCount = window.mailpoet_workflow_count;

mailpoet/assets/js/src/automation/listing/store/selectors.ts

@@ -1,6 +1,11 @@
 import { State } from './types';
 import { Workflow } from '../workflow';
+import { workflowCount } from '../../config';
 
 export function getWorkflows(state: State): Workflow[] {
   return state.workflows;
 }
+
+export function getWorkflowCount(state: State): number {
+  return state.workflows ? state.workflows.length : workflowCount;
+}

mailpoet/lib/AdminPages/Pages/Automation.php

@@ -4,6 +4,7 @@ namespace MailPoet\AdminPages\Pages;
 
 use MailPoet\AdminPages\PageRenderer;
 use MailPoet\Automation\Engine\Migrations\Migrator;
+use MailPoet\Automation\Engine\Storage\WorkflowStorage;
 use MailPoet\WP\Functions as WPFunctions;
 
 class Automation {
@@ -16,14 +17,19 @@ class Automation {
   /** @var WPFunctions */
   private $wp;
 
+  /** @var WorkflowStorage */
+  private $workflowStorage;
+
   public function __construct(
     Migrator $migrator,
     PageRenderer $pageRenderer,
-    WPFunctions $wp
+    WPFunctions $wp,
+    WorkflowStorage $workflowStorage
   ) {
     $this->migrator = $migrator;
     $this->pageRenderer = $pageRenderer;
     $this->wp = $wp;
+    $this->workflowStorage = $workflowStorage;
   }
 
   public function render() {
@@ -36,6 +42,7 @@ class Automation {
         'root' => rtrim($this->wp->escUrlRaw($this->wp->restUrl()), '/'),
         'nonce' => $this->wp->wpCreateNonce('wp_rest'),
       ],
+      'workflowCount' => $this->workflowStorage->getWorkflowCount(),
     ]);
   }
 }

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

@@ -93,6 +93,11 @@ class WorkflowStorage {
     }, (array)$data);
   }
 
+  public function getWorkflowCount(): int {
+    $workflowTable = esc_sql($this->workflowTable);
+    return (int)$this->wpdb->get_var("SELECT COUNT(*) FROM $workflowTable");
+  }
+
   /** @return string[] */
   public function getActiveTriggerKeys(): array {
     $workflowTable = esc_sql($this->workflowTable);

mailpoet/views/automation.html

@@ -10,6 +10,7 @@
 <% block after_javascript %>
   <script type="text/javascript">
     var mailpoet_automation_api = <%= json_encode(api) %>;
+    var mailpoet_workflow_count = <%= json_encode(workflowCount) %>;
   </script>
   <%= javascript('automation.js')%>
 <% endblock %>