fix: support_email and inbound_email_domain returning empty string (#8963)

chore: Fix for inbound email domain being nil

spec/models/account_spec.rb

@@ -47,6 +47,56 @@ RSpec.describe Account do
     end
   end
 
+  describe 'inbound_email_domain' do
+    let(:account) { create(:account) }
+
+    it 'returns the domain from inbox if inbox value is present' do
+      account.update(domain: 'test.com')
+      with_modified_env MAILER_INBOUND_EMAIL_DOMAIN: 'test2.com' do
+        expect(account.inbound_email_domain).to eq('test.com')
+      end
+    end
+
+    it 'returns the domain from ENV if inbox value is nil' do
+      account.update(domain: nil)
+      with_modified_env MAILER_INBOUND_EMAIL_DOMAIN: 'test.com' do
+        expect(account.inbound_email_domain).to eq('test.com')
+      end
+    end
+
+    it 'returns the domain from ENV if inbox value is empty string' do
+      account.update(domain: '')
+      with_modified_env MAILER_INBOUND_EMAIL_DOMAIN: 'test.com' do
+        expect(account.inbound_email_domain).to eq('test.com')
+      end
+    end
+  end
+
+  describe 'support_email' do
+    let(:account) { create(:account) }
+
+    it 'returns the support email from inbox if inbox value is present' do
+      account.update(support_email: 'support@chatwoot.com')
+      with_modified_env MAILER_SENDER_EMAIL: 'hello@chatwoot.com' do
+        expect(account.support_email).to eq('support@chatwoot.com')
+      end
+    end
+
+    it 'returns the support email from ENV if inbox value is nil' do
+      account.update(support_email: nil)
+      with_modified_env MAILER_SENDER_EMAIL: 'hello@chatwoot.com' do
+        expect(account.support_email).to eq('hello@chatwoot.com')
+      end
+    end
+
+    it 'returns the support email from ENV if inbox value is empty string' do
+      account.update(support_email: '')
+      with_modified_env MAILER_SENDER_EMAIL: 'hello@chatwoot.com' do
+        expect(account.support_email).to eq('hello@chatwoot.com')
+      end
+    end
+  end
+
   context 'when after_destroy is called' do
     it 'conv_dpid_seq and camp_dpid_seq_ are deleted' do
       account = create(:account)