Add a rake task to bulk invite users to an organization

lib/tasks/membership.rake

@@ -0,0 +1,53 @@
+require "csv"
+
+namespace :membership do
+  desc "Bulk invite members of an organization"
+  task :bulk_invite, %i[org_slug role filename sender_email] => [:destructive, :environment] do |_, args|
+    org_slug = args[:org_slug].to_s
+    org = Accounts::Organization.find_by slug: org_slug
+    abort "Org not found!" unless org
+
+    role = args[:role].to_s
+    abort "Invalid role" unless Accounts::Invite.roles.value?(role)
+
+    input_filename = args[:filename].to_s
+    abort "Provide a valid filename" if input_filename.blank?
+    abort "File does not exist" unless File.exist?(input_filename)
+
+    sender_email = args[:sender_email].to_s
+    abort "Sender email must be provided!" if sender_email.blank?
+    sender = org.users.find_by(email: sender_email)
+    abort "Sender not found!" if sender.blank?
+    abort "Sender does not have permissions to invite" unless sender.writer_for?(org)
+
+    csv_text = File.read(input_filename)
+    emails = CSV.parse(csv_text, headers: false)&.flatten
+
+    abort "No emails present in the file" if emails.empty?
+
+    existing_emails = org.invites.where(email: emails).pluck(:email)
+
+    new_emails = Set.new(emails) - Set.new(existing_emails)
+
+    new_emails.each do |email|
+      ActiveRecord::Base.transaction do
+        invite = Accounts::Invite.new({organization_id: org.id, role:, email:})
+        invite.sender = sender
+
+        if invite.save
+          if invite.recipient.present?
+            InvitationMailer.existing_user(invite).deliver
+          else
+            InvitationMailer.new_user(invite).deliver
+          end
+        else
+          puts "There was an error while saving the invite for #{email}!"
+        end
+      end
+    rescue Postmark::ApiInputError
+      puts "There was a delivery error while sending the invite for #{email}!"
+    end
+
+    puts "Invites successfully sent!"
+  end
+end