feat: Contact Exports (#7258)

app/jobs/account/contacts_export_job.rb

@@ -0,0 +1,47 @@
+class Account::ContactsExportJob < ApplicationJob
+  queue_as :low
+
+  def perform(account_id, column_names)
+    account = Account.find(account_id)
+    headers = valid_headers(column_names)
+    generate_csv(account, headers)
+    file_url = account_contact_export_url(account)
+
+    AdministratorNotifications::ChannelNotificationsMailer.with(account: account).contact_export_complete(file_url)&.deliver_later
+  end
+
+  def generate_csv(account, headers)
+    csv_data = CSV.generate do |csv|
+      csv << headers
+      account.contacts.each do |contact|
+        csv << headers.map { |header| contact.send(header) }
+      end
+    end
+
+    attach_export_file(account, csv_data)
+  end
+
+  def valid_headers(column_names)
+    columns = (column_names.presence || default_columns)
+    headers = columns.map { |column| column if Contact.column_names.include?(column) }
+    headers.compact
+  end
+
+  def attach_export_file(account, csv_data)
+    return if csv_data.blank?
+
+    account.contacts_export.attach(
+      io: StringIO.new(csv_data),
+      filename: "#{account.name}_#{account.id}_contacts.csv",
+      content_type: 'text/csv'
+    )
+  end
+
+  def account_contact_export_url(account)
+    Rails.application.routes.url_helpers.rails_blob_url(account.contacts_export)
+  end
+
+  def default_columns
+    %w[id name email phone_number]
+  end
+end