feat: Voice channel creation Flow (#11775)

This PR introduces a new channel type for voice conversations.

ref: #11481 

## Changes

- Add database migration for channel_voice table with phone_number and
provider_config
- Create Channel::Voice model with E.164 phone number validation and
Twilio config validation
- Add voice channel association to Account model
- Extend inbox helpers and types to support voice channels
- Add voice channel setup UI with Twilio configuration form
- Include voice channel in channel factory and list components
- Add API routes and store actions for voice channel creation
- Add comprehensive translations for voice channel management

---------

Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: iamsivin <iamsivin@gmail.com>

spec/enterprise/controllers/enterprise/api/v1/accounts/inboxes_controller_spec.rb

@@ -22,6 +22,22 @@ RSpec.describe 'Enterprise Inboxes API', type: :request do
         expect(response).to have_http_status(:success)
         expect(JSON.parse(response.body)['auto_assignment_config']['max_assignment_limit']).to eq 10
       end
+
+      it 'creates a voice inbox when administrator' do
+        post "/api/v1/accounts/#{account.id}/inboxes",
+             headers: admin.create_new_auth_token,
+             params: { name: 'Voice Inbox',
+                       channel: { type: 'voice', phone_number: '+15551234567',
+                                  provider_config: { account_sid: "AC#{SecureRandom.hex(16)}",
+                                                     auth_token: SecureRandom.hex(16),
+                                                     api_key_sid: SecureRandom.hex(8),
+                                                     api_key_secret: SecureRandom.hex(16) } } },
+             as: :json
+
+        expect(response).to have_http_status(:success)
+        expect(response.body).to include('Voice Inbox')
+        expect(response.body).to include('+15551234567')
+      end
     end
   end
 

spec/enterprise/models/channel/voice_spec.rb

@@ -0,0 +1,60 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Channel::Voice do
+  let(:channel) { create(:channel_voice) }
+
+  it 'has a valid factory' do
+    expect(channel).to be_valid
+  end
+
+  describe 'validations' do
+    it 'validates presence of provider_config' do
+      channel.provider_config = nil
+      expect(channel).not_to be_valid
+      expect(channel.errors[:provider_config]).to include("can't be blank")
+    end
+
+    it 'validates presence of account_sid in provider_config' do
+      channel.provider_config = { auth_token: 'token' }
+      expect(channel).not_to be_valid
+      expect(channel.errors[:provider_config]).to include('account_sid is required for Twilio provider')
+    end
+
+    it 'validates presence of auth_token in provider_config' do
+      channel.provider_config = { account_sid: 'sid' }
+      expect(channel).not_to be_valid
+      expect(channel.errors[:provider_config]).to include('auth_token is required for Twilio provider')
+    end
+
+    it 'validates presence of api_key_sid in provider_config' do
+      channel.provider_config = { account_sid: 'sid', auth_token: 'token' }
+      expect(channel).not_to be_valid
+      expect(channel.errors[:provider_config]).to include('api_key_sid is required for Twilio provider')
+    end
+
+    it 'validates presence of api_key_secret in provider_config' do
+      channel.provider_config = { account_sid: 'sid', auth_token: 'token', api_key_sid: 'key' }
+      expect(channel).not_to be_valid
+      expect(channel.errors[:provider_config]).to include('api_key_secret is required for Twilio provider')
+    end
+
+    it 'is valid with all required provider_config fields' do
+      channel.provider_config = {
+        account_sid: 'test_sid',
+        auth_token: 'test_token',
+        api_key_sid: 'test_key',
+        api_key_secret: 'test_secret'
+      }
+      expect(channel).to be_valid
+    end
+  end
+
+  describe '#name' do
+    it 'returns Voice with phone number' do
+      expect(channel.name).to include('Voice')
+      expect(channel.name).to include(channel.phone_number)
+    end
+  end
+end

spec/factories/channel/channel_voice.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :channel_voice, class: 'Channel::Voice' do
+    sequence(:phone_number) { |n| "+155512345#{n.to_s.rjust(2, '0')}" }
+    provider_config do
+      {
+        account_sid: "AC#{SecureRandom.hex(16)}",
+        auth_token: SecureRandom.hex(16),
+        api_key_sid: SecureRandom.hex(8),
+        api_key_secret: SecureRandom.hex(16)
+      }
+    end
+    account
+
+    after(:create) do |channel_voice|
+      create(:inbox, channel: channel_voice, account: channel_voice.account)
+    end
+  end
+end