describe Users::CommencerController, type: :controller do
  let(:user) { create(:user) }
  let(:published_procedure) { create(:procedure, :for_individual, :published) }
  let(:draft_procedure) { create(:procedure, :with_path) }

  describe '#commencer' do
    subject { get :commencer, params: { path: path } }

    context 'when the path is for a published procedure' do
      let(:path) { published_procedure.path }

      it 'renders the view' do
        expect(subject.status).to eq(200)
        expect(subject).to render_template('show')
        expect(assigns(:procedure)).to eq published_procedure
        expect(assigns(:revision)).to eq published_procedure.published_revision
      end
    end

    context 'when the path is for a draft procedure' do
      let(:path) { draft_procedure.path }

      it 'renders the view' do
        expect(subject.status).to eq(200)
        expect(subject).to render_template('show')
        expect(assigns(:procedure)).to eq draft_procedure
        expect(assigns(:revision)).to eq draft_procedure.draft_revision
      end
    end

    context 'when the path does not exist' do
      let(:path) { 'hello' }

      it 'redirects with an error message' do
        expect(subject).to redirect_to(root_path)
      end
    end

    context 'when procedure without service is closed' do
      it 'works' do
        published_procedure.service = nil
        published_procedure.organisation = "hello"
        published_procedure.close!
        get :commencer, params: { path: published_procedure.path }
        expect(response).to redirect_to(closing_details_path(published_procedure.path))
      end
    end

    context 'when procedure with service is closed' do
      it 'works' do
        published_procedure.service = create(:service)
        published_procedure.close!
        get :commencer, params: { path: published_procedure.path }
        expect(response).to redirect_to(closing_details_path(published_procedure.path))
      end
    end

    context 'when procedure has a replaced_by_procedure' do
      let(:path) { published_procedure.path }

      it 'redirects to new procedure' do
        replaced_by_procedure = create(:procedure, :published)
        published_procedure.update!(replaced_by_procedure_id: replaced_by_procedure.id)
        published_procedure.close!
        expect(subject).to redirect_to(commencer_path(path: replaced_by_procedure.path))
      end
    end

    context 'when a dossier has been prefilled by POST before' do
      let(:dossier) { create(:dossier, :brouillon, :prefilled, user: user) }
      let(:path) { dossier.procedure.path }

      subject { get :commencer, params: { path: path, prefill_token: dossier.prefill_token } }

      shared_examples 'a prefilled brouillon dossier retriever' do
        context 'when the dossier is a prefilled brouillon and the prefill token is present' do
          it 'retrieves the dossier' do
            subject
            expect(assigns(:prefilled_dossier)).to eq(dossier)
          end
        end

        context 'when the dossier is not prefilled' do
          before do
            dossier.prefilled = false
            dossier.save(validate: false)
          end

          it { expect { subject }.to raise_error(ActiveRecord::RecordNotFound) }
        end

        context 'when the dossier is not a brouillon' do
          before { dossier.en_construction! }

          it { expect { subject }.to raise_error(ActiveRecord::RecordNotFound) }
        end

        context 'when the prefill token does not match any dossier' do
          before { dossier.prefill_token = "totoro" }

          it { expect { subject }.to raise_error(ActiveRecord::RecordNotFound) }
        end
      end

      context 'when the user is unauthenticated' do
        let(:user) { nil }

        it_behaves_like 'a prefilled brouillon dossier retriever'
      end

      context 'when the user is authenticated' do
        context 'when the dossier already has an owner' do
          let(:user) { create(:user) }

          context 'when the user is the dossier owner' do
            before { sign_in user }

            it_behaves_like 'a prefilled brouillon dossier retriever'
          end

          context 'when the user is not the dossier owner' do
            before { sign_in create(:user) }

            it { expect { subject }.to raise_error(ActiveRecord::RecordNotFound) }
          end
        end

        context 'when the dossier does not have an owner yet' do
          let(:user) { nil }
          let(:newly_authenticated_user) { create(:user) }

          before { sign_in newly_authenticated_user }

          it { expect { subject }.to change { dossier.reload.user }.from(nil).to(newly_authenticated_user) }

          it 'sends the notify_new_draft email' do
            expect { perform_enqueued_jobs { subject } }.to change { ActionMailer::Base.deliveries.count }.by(1)

            dossier = Dossier.last
            mail = ActionMailer::Base.deliveries.last
            expect(mail.subject).to eq("Retrouvez votre brouillon pour la démarche « #{dossier.procedure.libelle} »")
            expect(mail.html_part.body).to include(dossier_path(dossier))
          end
        end
      end
    end

    context 'when a dossier is being prefilled by GET' do
      let(:type_de_champ_text) { create(:type_de_champ_text, procedure: published_procedure) }
      let(:path) { published_procedure.path }
      let(:user) { create(:user) }

      context "when the dossier does not exists yet" do
        subject { get :commencer, params: { path: path, "champ_#{type_de_champ_text.to_typed_id}" => "blabla", "identite_nom" => "Dupont" } }

        shared_examples 'a prefilled brouillon dossier creator' do
          it 'creates a dossier' do
            subject
            expect(Dossier.count).to eq(1)
            expect(session[:prefill_token]).to eq(Dossier.last.prefill_token)
            expect(session[:prefill_params_digest]).to eq(PrefillChamps.digest({ "champ_#{type_de_champ_text.to_typed_id}" => "blabla" }))
            expect(Dossier.last.champs.where(stable_id: type_de_champ_text.stable_id).first.value).to eq("blabla")
            expect(Dossier.last.individual.nom).to eq("Dupont")
          end
        end

        context 'when the user is unauthenticated' do
          it_behaves_like 'a prefilled brouillon dossier creator'
        end

        context 'when the user is authenticated' do
          before { sign_in user }

          it_behaves_like 'a prefilled brouillon dossier creator'

          it { expect { subject }.to change { Dossier.last&.user }.from(nil).to(user) }

          it 'sends the notify_new_draft email' do
            expect { perform_enqueued_jobs { subject } }.to change { ActionMailer::Base.deliveries.count }.by(1)

            dossier = Dossier.last
            mail = ActionMailer::Base.deliveries.last
            expect(mail.subject).to eq("Retrouvez votre brouillon pour la démarche « #{dossier.procedure.libelle} »")
            expect(mail.html_part.body).to include(dossier_path(dossier))
          end
        end
      end

      context "when prefilled params are passed" do
        subject { get :commencer, params: { path: path, prefill_token: "token", "champ_#{type_de_champ_text.to_typed_id}" => "blabla" } }

        context "when the associated dossier exists" do
          let(:procedure) { create(:procedure, types_de_champ_public: [{}]) }
          let!(:dossier) { create(:dossier, :prefilled, procedure:, prefill_token: "token") }

          it "does not create a new dossier" do
            subject
            expect(Dossier.count).to eq(1)
            expect(assigns(:prefilled_dossier)).to eq(dossier)
          end
        end
        context "when the associated dossier does not exists" do
          it { expect { subject }.to raise_error(ActiveRecord::RecordNotFound) }
        end
      end

      context "when session params exists" do
        subject { get :commencer, params: { path: path, "champ_#{type_de_champ_text.to_typed_id}" => "blabla" } }

        before do
          session[:prefill_token] = "token"
          session[:prefill_params_digest] = PrefillChamps.digest({ "champ_#{type_de_champ_text.to_typed_id}" => "blabla" })
        end

        context "when the associated dossier exists" do
          let!(:dossier) { create(:dossier, :prefilled, prefill_token: "token") }

          it "does not create a new dossier" do
            subject
            expect(Dossier.count).to eq(1)
            expect(assigns(:prefilled_dossier)).to eq(dossier)
          end
        end

        context "when the associated dossier does not exists" do
          it { expect { subject }.to raise_error(ActiveRecord::RecordNotFound) }
        end
      end
    end
  end

  shared_examples 'a prefill token storage' do
    it 'stores the prefill token' do
      subject
      expect(controller.stored_location_for(:user)).to include('prefill_token')
    end
  end

  describe '#sign_in' do
    context 'for a published procedure' do
      subject { get :sign_in, params: { path: published_procedure.path } }

      it 'set the path to return after sign-in to the procedure start page' do
        subject
        expect(controller.stored_location_for(:user)).to eq(commencer_path(path: published_procedure.path))
      end

      it { expect(subject).to redirect_to(new_user_session_path) }

      context 'when a prefill token is given' do
        subject { get :sign_in, params: { path: published_procedure.path, prefill_token: 'prefill_token' } }

        it_behaves_like 'a prefill token storage'
      end
    end

    context 'for a draft procedure' do
      subject { get :sign_in, params: { path: draft_procedure.path } }

      it 'set the path to return after sign-in to the draft procedure start page' do
        subject
        expect(controller.stored_location_for(:user)).to eq(commencer_path(path: draft_procedure.path))
      end

      it { expect(subject).to redirect_to(new_user_session_path) }

      context 'when a prefill token is given' do
        subject { get :sign_in, params: { path: draft_procedure.path, prefill_token: 'prefill_token' } }

        it_behaves_like 'a prefill token storage'
      end
    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
    context 'for a published procedure' do
      subject { get :sign_up, params: { path: published_procedure.path } }

      it 'set the path to return after sign-up to the procedure start page' do
        subject
        expect(controller.stored_location_for(:user)).to eq(commencer_path(path: published_procedure.path))
      end

      it { expect(subject).to redirect_to(new_user_registration_path) }

      context 'when a prefill token is given' do
        subject { get :sign_up, params: { path: published_procedure.path, prefill_token: 'prefill_token' } }

        it_behaves_like 'a prefill token storage'
      end
    end

    context 'for a draft procedure' do
      subject { get :sign_up, params: { path: draft_procedure.path } }

      it 'set the path to return after sign-up to the draft procedure start page' do
        subject
        expect(controller.stored_location_for(:user)).to eq(commencer_path(path: draft_procedure.path))
      end

      it { expect(subject).to redirect_to(new_user_registration_path) }

      context 'when a prefill token is given' do
        subject { get :sign_up, params: { path: draft_procedure.path, prefill_token: 'prefill_token' } }

        it_behaves_like 'a prefill token storage'
      end
    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
    context 'for a published procedure' do
      subject { get :france_connect, params: { path: published_procedure.path } }

      it 'set the path to return after sign-up to the procedure start page' do
        subject
        expect(controller.stored_location_for(:user)).to eq(commencer_path(path: published_procedure.path))
      end

      it { expect(subject).to redirect_to(france_connect_particulier_path) }

      context 'when a prefill token is given' do
        subject { get :france_connect, params: { path: published_procedure.path, prefill_token: 'prefill_token' } }

        it_behaves_like 'a prefill token storage'
      end
    end

    context 'for a draft procedure' do
      subject { get :france_connect, params: { path: draft_procedure.path } }

      it 'set the path to return after sign-up to the draft procedure start page' do
        subject
        expect(controller.stored_location_for(:user)).to eq(commencer_path(path: draft_procedure.path))
      end

      it { expect(subject).to redirect_to(france_connect_particulier_path) }

      context 'when a prefill token is given' do
        subject { get :france_connect, params: { path: draft_procedure.path, prefill_token: 'prefill_token' } }

        it_behaves_like 'a prefill token storage'
      end
    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

  describe '#dossier_vide_pdf' do
    let(:procedure) { create(:procedure, :published, :with_service, :with_path) }
    before { get :dossier_vide_pdf, params: { path: procedure.path } }

    context 'published procedure' do
      it 'works' do
        expect(response).to have_http_status(:success)
      end
    end

    context 'not yet published procedure' do
      let(:procedure) { create(:procedure, :with_service, :with_path) }

      it 'redirects to procedure not found' do
        expect(response).to have_http_status(302)
      end
    end

    context 'closed procedure' do
      it 'works' do
        procedure.service = create(:service)
        procedure.close!
        expect(response).to have_http_status(:success)
      end
    end
  end

  describe '#dossier_vide_test_pdf' do
    render_views
    before { get :dossier_vide_pdf_test, params: { path: procedure.path }, format: :pdf }

    context 'not published procedure with service' do
      let(:procedure) { create(:procedure, :with_service, :with_path) }

      it 'works' do
        expect(response).to have_http_status(:success)
      end
    end

    context 'not published procedure without service' do
      let(:procedure) { create(:procedure, :with_path, service: nil, organisation: nil) }

      it 'works' do
        expect(response).to have_http_status(:success)
      end
    end
  end
end