unsubscribe and added zip for newletter marketing

lib/mail_chimp_batch_update.rb

@@ -1,20 +1,28 @@
 class MailChimpBatchUpdate
-  def self.update_all(api_key, list_id)
+  def initialize(api_key, list_id)
+    @mailchimp = Mailchimp::API.new(api_key)
+    @list_id = list_id
+  end
+
+  def update_all
     subscribers = []
-    mailchimp = Mailchimp::API.new(api_key)
 
     Supporter.each_with_index do |supporter, index|
       subscribers.push(subscriber supporter)
       if index.modulo(20) == 0
-        mailchimp.lists.batch_subscribe(list_id, subscribers, false, true, false)
+        batch_subscribe(subscribers)
         subscribers = []
       end
     end
 
-    mailchimp.lists.batch_subscribe(list_id, subscribers, false, true, false)
+    batch_subscribe(subscribers)
   end
 
-  def self.subscriber(supporter)
+  def batch_subscribe(subscribers)
+    @mailchimp.lists.batch_subscribe(@list_id, subscribers, false, true, false)
+  end
+
+  def subscriber(supporter)
     { 'EMAIL' => { 'email' => supporter.email }, 'language' => supporter.language, :EMAIL_TYPE => 'html',
       :merge_vars => {
         'EMAIL' => supporter.email,
@@ -23,7 +31,16 @@ class MailChimpBatchUpdate
         'SUPPORT' => supporter.support,
         'MEMBERSHIP' => supporter.li_membership.to_s,
         'AGE' => supporter.age_category,
-        'LANG' => supporter.language
-      } }
+        'LANG' => supporter.language,
+        'ZIP' => supporter.zip } }
+  end
+
+  def update_unsubscibed
+    unsubscribed_members = @mailchimp.lists.members(@list_id, 'unsubscribed', limit: 100)
+    unsubscribed_members['data'].each do |member|
+      Supporter.where(email: member['email']).each do |supporter|
+        supporter.update_attributes unsubscribed: true
+      end
+    end
   end
 end