feat (ee): APIs to configure an auto assignment limit for inboxes (#4672)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/models/account.rb

@@ -20,7 +20,6 @@ class Account < ApplicationRecord
   include FlagShihTzu
   include Reportable
   include Featurable
-  prepend_mod_with('Account')
 
   DEFAULT_QUERY_SETTING = {
     flag_query_mode: :bit_operator,
@@ -146,3 +145,5 @@ class Account < ApplicationRecord
     ActiveRecord::Base.connection.exec_query("drop sequence IF EXISTS conv_dpid_seq_#{id}")
   end
 end
+
+Account.prepend_mod_with('Account')

app/models/concerns/round_robin_handler.rb

@@ -14,7 +14,7 @@ module RoundRobinHandler
     return unless conversation_status_changed_to_open?
     return unless should_round_robin?
 
-    ::RoundRobin::AssignmentService.new(conversation: self).perform
+    ::RoundRobin::AssignmentService.new(conversation: self, allowed_member_ids: inbox.member_ids_with_assignment_capacity).perform
   end
 
   def should_round_robin?

app/models/inbox.rb

@@ -6,6 +6,7 @@
 #
 #  id                            :integer          not null, primary key
 #  allow_messages_after_resolved :boolean          default(TRUE)
+#  auto_assignment_config        :jsonb
 #  channel_type                  :string
 #  csat_survey_enabled           :boolean          default(FALSE)
 #  email_address                 :string
@@ -35,6 +36,7 @@ class Inbox < ApplicationRecord
   validates :name, presence: true
   validates :account_id, presence: true
   validates :timezone, inclusion: { in: TZInfo::Timezone.all_identifiers }
+  validate :ensure_valid_max_assignment_limit
 
   belongs_to :account
 
@@ -118,9 +120,19 @@ class Inbox < ApplicationRecord
     end
   end
 
+  def member_ids_with_assignment_capacity
+    members.ids
+  end
+
   private
 
+  def ensure_valid_max_assignment_limit
+    # overridden in enterprise/app/models/enterprise/inbox.rb
+  end
+
   def delete_round_robin_agents
     ::RoundRobin::ManageService.new(inbox: self).clear_queue
   end
 end
+
+Inbox.prepend_mod_with('Inbox')