commencer: fix redirection with invalid path

app/controllers/users/commencer_controller.rb

@@ -4,38 +4,39 @@ module Users
 
     def commencer
       @procedure = Procedure.publiees.find_by(path: params[:path])
-
-      if @procedure.blank?
-        flash.alert = "La démarche est inconnue, ou la création de nouveaux dossiers pour cette démarche est terminée."
-        return redirect_to root_path
-      end
+      return procedure_not_found if @procedure.blank?
 
       render 'commencer/show'
     end
 
     def commencer_test
       @procedure = Procedure.brouillons.find_by(path: params[:path])
-
-      if @procedure.blank?
-        flash.alert = "La démarche est inconnue, ou cette démarche n’est maintenant plus en test."
-        return redirect_to root_path
-      end
+      return procedure_not_found if @procedure.blank?
 
       render 'commencer/show'
     end
 
     def sign_in
-      store_user_location!
+      @procedure = Procedure.find_by(path: params[:path])
+      return procedure_not_found if @procedure.blank?
+
+      store_user_location!(@procedure)
       redirect_to new_user_session_path
     end
 
     def sign_up
-      store_user_location!
+      @procedure = Procedure.find_by(path: params[:path])
+      return procedure_not_found if @procedure.blank?
+
+      store_user_location!(@procedure)
       redirect_to new_user_registration_path
     end
 
     def france_connect
-      store_user_location!
+      @procedure = Procedure.find_by(path: params[:path])
+      return procedure_not_found if @procedure.blank?
+
+      store_user_location!(@procedure)
       redirect_to france_connect_particulier_path
     end
 
@@ -45,8 +46,21 @@ module Users
 
     private
 
-    def store_user_location!
+    def procedure_not_found
       procedure = Procedure.find_by(path: params[:path])
+
+      if procedure&.archivee?
+        flash.alert = t('errors.messages.procedure_archived')
+      elsif procedure&.publiee?
+        flash.alert = t('errors.messages.procedure_not_draft')
+      else
+        flash.alert = t('errors.messages.procedure_not_found')
+      end
+
+      return redirect_to root_path
+    end
+
+    def store_user_location!(procedure)
       store_location_for(:user, helpers.procedure_lien(procedure))
     end
   end

config/locales/fr.yml

@@ -188,6 +188,7 @@ fr:
         connexion: "Erreur lors de la connexion à France Connect."
       extension_white_list_error: "Le format de fichier de la pièce jointe n'est pas valide."
       procedure_archived: "Cette démarche en ligne a été fermée, il n'est plus possible de déposer de dossier."
+      procedure_not_draft: "Cette démarche n’est maintenant plus en brouillon."
       cadastres_empty:
         one: "Aucune parcelle cadastrale sur la zone séléctionnée"
         other: "Aucune parcelle cadastrale sur les zones séléctionnées"

spec/controllers/users/commencer_controller_spec.rb

@@ -87,6 +87,14 @@ describe Users::CommencerController, type: :controller do
 
       it { expect(subject).to redirect_to(new_user_session_path) }
     end
+
+    context 'when the path doesn’t exist' do
+      subject { get :sign_in, params: { path: 'hello' } }
+
+      it 'redirects with an error message' do
+        expect(subject).to redirect_to(root_path)
+      end
+    end
   end
 
   describe '#sign_up' do
@@ -111,6 +119,14 @@ describe Users::CommencerController, type: :controller do
 
       it { expect(subject).to redirect_to(new_user_registration_path) }
     end
+
+    context 'when the path doesn’t exist' do
+      subject { get :sign_up, params: { path: 'hello' } }
+
+      it 'redirects with an error message' do
+        expect(subject).to redirect_to(root_path)
+      end
+    end
   end
 
   describe '#france_connect' do
@@ -135,5 +151,13 @@ describe Users::CommencerController, type: :controller do
 
       it { expect(subject).to redirect_to(france_connect_particulier_path) }
     end
+
+    context 'when the path doesn’t exist' do
+      subject { get :france_connect, params: { path: 'hello' } }
+
+      it 'redirects with an error message' do
+        expect(subject).to redirect_to(root_path)
+      end
+    end
   end
 end