feat: Authenticate by SSO tokens (#1439)

Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>

spec/controllers/devise/session_controller_spec.rb

@@ -30,5 +30,36 @@ RSpec.describe 'Session', type: :request do
         expect(response.body).to include(user.email)
       end
     end
+
+    context 'when it is invalid sso auth token' do
+      let!(:user) { create(:user, password: 'test1234', account: account) }
+
+      it 'returns unauthorized' do
+        params = { email: user.email, sso_auth_token: SecureRandom.hex(32) }
+
+        post new_user_session_url,
+             params: params,
+             as: :json
+        expect(response).to have_http_status(:unauthorized)
+        expect(response.body).to include('Invalid login credentials')
+      end
+    end
+
+    context 'when with valid sso auth token' do
+      let!(:user) { create(:user, password: 'test1234', account: account) }
+
+      it 'returns successful auth response' do
+        params = { email: user.email, sso_auth_token: user.generate_sso_auth_token }
+
+        post new_user_session_url, params: params, as: :json
+
+        expect(response).to have_http_status(:success)
+        expect(response.body).to include(user.email)
+
+        # token won't work on a subsequent request
+        post new_user_session_url, params: params, as: :json
+        expect(response).to have_http_status(:unauthorized)
+      end
+    end
   end
 end