Store client header in session to persist across redirects

app/controllers/application_controller.rb

@@ -5,7 +5,7 @@ class ApplicationController < ActionController::Base
 
   rescue_from Pundit::NotAuthorizedError, with: :user_not_authorized
 
-  before_action :unread_notifications, :set_self_hosted_status
+  before_action :unread_notifications, :set_self_hosted_status, :store_client_header
 
   protected
 
@@ -40,14 +40,17 @@ class ApplicationController < ActionController::Base
   end
 
   def after_sign_in_path_for(resource)
-    payload = { api_key: resource.api_key, exp: 5.minutes.from_now.to_i }
+    # Check both current request header and stored session value
+    client_type = request.headers['X-Dawarich-Client'] || session[:dawarich_client]
 
-    token = Subscription::EncodeJwtToken.new(
-      payload, ENV['AUTH_JWT_SECRET_KEY']
-    ).call
-
-    case request.headers['X-Dawarich-Client']
+    case client_type
     when 'ios'
+      payload = { api_key: resource.api_key, exp: 5.minutes.from_now.to_i }
+
+      token = Subscription::EncodeJwtToken.new(
+        payload, ENV['AUTH_JWT_SECRET_KEY']
+      ).call
+
       ios_success_path(token:)
     else
       super
@@ -60,6 +63,12 @@ class ApplicationController < ActionController::Base
     @self_hosted = DawarichSettings.self_hosted?
   end
 
+  def store_client_header
+    return unless request.headers['X-Dawarich-Client']
+
+    session[:dawarich_client] = request.headers['X-Dawarich-Client']
+  end
+
   def user_not_authorized
     redirect_back fallback_location: root_path,
                   alert: 'You are not authorized to perform this action.',

spec/requests/authentication_spec.rb

@@ -72,7 +72,10 @@ RSpec.describe 'Authentication', type: :request do
       # Make a login request with the iOS client header (user NOT pre-signed in)
       post user_session_path, params: {
         user: { email: user.email, password: 'password123' }
-      }, headers: { 'X-Dawarich-Client' => 'ios' }
+      }, headers: {
+        'X-Dawarich-Client' => 'ios',
+        'Accept' => 'text/html'
+      }
 
       # Should redirect to iOS success endpoint after successful login
       # The redirect will include a token parameter generated by after_sign_in_path_for
@@ -80,6 +83,22 @@ RSpec.describe 'Authentication', type: :request do
       expect(response.location).to include('token=')
     end
 
+    it 'does not redirect to iOS success path when using turbo_stream format' do
+      # This test demonstrates the issue: when iOS app sends turbo_stream format,
+      # it doesn't get the iOS-specific redirect behavior
+      post user_session_path, params: {
+        user: { email: user.email, password: 'password123' }
+      }, headers: {
+        'X-Dawarich-Client' => 'ios',
+        'Accept' => 'text/vnd.turbo-stream.html'
+      }
+
+      # With turbo_stream format, it doesn't redirect at all (no location header)
+      # This demonstrates why iOS authentication fails when using turbo_stream
+      expect(response.location).to be_nil
+      expect(response.status).to eq(200)  # Returns turbo_stream response instead of redirect
+    end
+
     it 'returns JSON response with JWT token for iOS success endpoint' do
       # Generate a test JWT token using the same service as the controller
       payload = { api_key: user.api_key, exp: 5.minutes.from_now.to_i }