- Finishes import migration

- Updates models
- Improves Notice.js

lib/Models/Subscriber.php

@@ -1,6 +1,7 @@
 <?php
 namespace MailPoet\Models;
 
+use MailPoet\Util\Helpers;
 if(!defined('ABSPATH')) exit;
 
 class Subscriber extends Model {
@@ -302,4 +303,52 @@ class Subscriber extends Model {
       ->whereNull('deleted_at')
       ->where('status', 'unconfirmed');
   }
+  
+    static function createMultiple($columns, $values) {
+    return self::rawExecute(
+      'INSERT IGNORE INTO `' . self::$_table . '` ' .
+      '(' . implode(', ', $columns) . ') ' .
+      'VALUES ' . rtrim(
+        str_repeat(
+          '(' . rtrim(str_repeat('?,', count($columns)), ',') . ')' . ', '
+          , count($values)
+        )
+        , ', '),
+      Helpers::flattenArray($values)
+    );
+  }
+  
+  static function updateMultiple($columns, $subscribers, $currentTime) {
+    $ignoreColumnsOnUpdate = array(
+      'email',
+      'created_at'
+    );
+    $emailPosition = array_search('email', $columns);
+    $sql = function ($type) use ($columns, $subscribers, $emailPosition, $ignoreColumnsOnUpdate) {
+      return array_filter(
+        array_map(function ($columnPosition, $columnName) use ($type, $subscribers, $emailPosition, $ignoreColumnsOnUpdate) {
+          if(in_array($columnName, $ignoreColumnsOnUpdate)) return;
+          $query = array_map(
+            function ($subscriber) use ($type, $columnPosition, $emailPosition) {
+              return ($type === 'values') ?
+                array(
+                  $subscriber[$emailPosition],
+                  $subscriber[$columnPosition]
+                ) :
+                'WHEN email = ? THEN ?';
+            }, $subscribers);
+          return ($type === 'values') ?
+            Helpers::flattenArray($query) :
+            $columnName . '= (CASE ' . implode(' ', $query) . ' END)';
+        }, array_keys($columns), $columns)
+      );
+    };
+    return self::rawExecute(
+      'UPDATE `' . self::$_table . '` ' .
+      'SET ' . implode(', ', $sql('statement')) . ', ' .
+      'updated_at = "' . $currentTime . '" ' .
+      'WHERE email IN (' . rtrim(str_repeat('?,', count($subscribers)), ',') . ')',
+      array_merge(Helpers::flattenArray($sql('values')), Helpers::arrayColumn($subscribers, $emailPosition))
+    );
+  }
 }