feat: Add Instagram Channel (#2955)

spec/builders/messages/instagram/message_builder_spec.rb

@@ -0,0 +1,41 @@
+require 'rails_helper'
+
+describe  ::Messages::Instagram::MessageBuilder do
+  subject(:instagram_message_builder) { described_class }
+
+  let!(:account) { create(:account) }
+  let!(:instagram_channel) { create(:channel_instagram_fb_page, account: account, instagram_id: 'chatwoot-app-user-id-1') }
+  let!(:instagram_inbox) { create(:inbox, channel: instagram_channel, account: account, greeting_enabled: false) }
+  let!(:dm_params) { build(:instagram_message_create_event).with_indifferent_access }
+  let(:fb_object) { double }
+  let(:contact) { create(:contact, id: 'Sender-id-1', name: 'Jane Dae') }
+  let(:contact_inbox) { create(:contact_inbox, contact_id: contact.id, inbox_id: instagram_inbox.id, source_id: 'Sender-id-1') }
+
+  describe '#perform' do
+    it 'creates contact and message for the facebook inbox' do
+      allow(Koala::Facebook::API).to receive(:new).and_return(fb_object)
+      allow(fb_object).to receive(:get_object).and_return(
+        {
+          name: 'Jane',
+          id: 'Sender-id-1',
+          account_id: instagram_inbox.account_id,
+          profile_pic: 'https://via.placeholder.com/250x250.png'
+        }.with_indifferent_access
+      )
+      messaging = dm_params[:entry][0]['messaging'][0]
+      contact_inbox
+      instagram_message_builder.new(messaging, instagram_inbox).perform
+
+      instagram_inbox.reload
+
+      expect(instagram_inbox.conversations.count).to be 1
+      expect(instagram_inbox.messages.count).to be 1
+
+      contact = instagram_channel.inbox.contacts.first
+      message = instagram_channel.inbox.messages.first
+
+      expect(contact.name).to eq('Jane Dae')
+      expect(message.content).to eq('This is the first message from the customer')
+    end
+  end
+end