chore: one off SMS campaign APIs (#2589)

spec/models/campaign_spec.rb

@@ -20,4 +20,68 @@ RSpec.describe Campaign, type: :model do
       expect(campaign.display_id).to eq(1)
     end
   end
+
+  context 'when Inbox other then Website or Twilio SMS' do
+    let!(:facebook_channel) { create(:channel_facebook_page) }
+    let!(:facebook_inbox) { create(:inbox, channel: facebook_channel) }
+    let(:campaign) { build(:campaign, inbox: facebook_inbox) }
+
+    it 'would not save the campaigns' do
+      expect(campaign.save).to eq false
+      expect(campaign.errors.full_messages.first).to eq 'Inbox Unsupported Inbox type'
+    end
+  end
+
+  context 'when a campaign is completed' do
+    let!(:campaign) { create(:campaign, campaign_status: :completed) }
+
+    it 'would prevent further updates' do
+      campaign.title = 'new name'
+      expect(campaign.save).to eq false
+      expect(campaign.errors.full_messages.first).to eq 'Status The campaign is already completed'
+    end
+
+    it 'can be deleted' do
+      campaign.destroy!
+      expect(described_class.exists?(campaign.id)).to eq false
+    end
+
+    it 'cant be triggered' do
+      expect(Twilio::OneoffSmsCampaignService).not_to receive(:new).with(campaign: campaign)
+      expect(campaign.trigger!).to eq nil
+    end
+  end
+
+  describe 'ensure_correct_campaign_attributes' do
+    context 'when Twilio SMS campaign' do
+      let!(:twilio_sms) { create(:channel_twilio_sms) }
+      let!(:twilio_inbox) { create(:inbox, channel: twilio_sms) }
+      let(:campaign) { build(:campaign, inbox: twilio_inbox) }
+
+      it 'only saves campaign type as oneoff and wont leave scheduled_at empty' do
+        campaign.campaign_type = 'ongoing'
+        campaign.save!
+        expect(campaign.reload.campaign_type).to eq 'one_off'
+        expect(campaign.scheduled_at.present?).to eq true
+      end
+
+      it 'calls twilio service on trigger!' do
+        sms_service = double
+        expect(Twilio::OneoffSmsCampaignService).to receive(:new).with(campaign: campaign).and_return(sms_service)
+        expect(sms_service).to receive(:perform)
+        campaign.save!
+        campaign.trigger!
+      end
+    end
+
+    context 'when Website campaign' do
+      let(:campaign) { build(:campaign) }
+
+      it 'only saves campaign type as ongoing' do
+        campaign.campaign_type = 'one_off'
+        campaign.save!
+        expect(campaign.reload.campaign_type).to eq 'ongoing'
+      end
+    end
+  end
 end