feat: Enable Capacity Config UI (#5164)

- Enables Capacity Config in UI
- Rewrite auto assignment Logic to consider only online agents

fixes: #4990

spec/models/concerns/assignment_handler_shared.rb

@@ -6,7 +6,7 @@ shared_examples_for 'assignment_handler' do
   describe '#update_team' do
     let(:conversation) { create(:conversation, assignee: create(:user)) }
     let(:agent) do
-      create(:user, email: 'agent@example.com', account: conversation.account, role: :agent)
+      create(:user, email: 'agent@example.com', account: conversation.account, role: :agent, auto_offline: false)
     end
     let(:team) do
       create(:team, account: conversation.account, allow_auto_assign: false)

spec/models/concerns/auto_assignment_handler_shared.rb

@@ -2,10 +2,10 @@
 
 require 'rails_helper'
 
-shared_examples_for 'round_robin_handler' do
-  describe '#round robin' do
+shared_examples_for 'auto_assignment_handler' do
+  describe '#auto assignment' do
     let(:account) { create(:account) }
-    let(:agent) { create(:user, email: 'agent1@example.com', account: account) }
+    let(:agent) { create(:user, email: 'agent1@example.com', account: account, auto_offline: false) }
     let(:inbox) { create(:inbox, account: account) }
     let(:conversation) do
       create(
@@ -23,14 +23,12 @@ shared_examples_for 'round_robin_handler' do
     end
 
     it 'runs round robin on after_save callbacks' do
-      # run_round_robin
       expect(conversation.reload.assignee).to eq(agent)
     end
 
     it 'will not auto assign agent if enable_auto_assignment is false' do
       inbox.update(enable_auto_assignment: false)
 
-      # run_round_robin
       expect(conversation.reload.assignee).to be_nil
     end
 
@@ -44,7 +42,6 @@ shared_examples_for 'round_robin_handler' do
         assignee: nil
       )
 
-      # run_round_robin
       expect(conversation.reload.assignee).to be_nil
     end
 
@@ -55,7 +52,7 @@ shared_examples_for 'round_robin_handler' do
       inbox.inbox_members.where(user_id: agent.id).first.destroy!
 
       # round robin changes assignee in this case since agent doesn't have access to inbox
-      agent2 = create(:user, email: 'agent2@example.com', account: account)
+      agent2 = create(:user, email: 'agent2@example.com', account: account, auto_offline: false)
       create(:inbox_member, inbox: inbox, user: agent2)
       allow(Redis::Alfred).to receive(:rpoplpush).and_return(agent2.id)
       conversation.status = 'open'