Redirect deprecated SSE to Web IDE

- Redirect Static Site Editor (SSE) to Web IDE
- Deletes SSE feature spec
- Removal of remaining SSE code will be performed
  in a subsequent MR.

Changelog: changed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/80347

app/controllers/projects/static_site_editor_controller.rb

@@ -3,6 +3,7 @@
 class Projects::StaticSiteEditorController < Projects::ApplicationController
   include ExtractsPath
   include CreatesCommit
+  include BlobHelper
 
   layout 'fullscreen'
 
@@ -24,28 +25,7 @@ class Projects::StaticSiteEditorController < Projects::ApplicationController
   end
 
   def show
-    service_response = ::StaticSiteEditor::ConfigService.new(
-      container: project,
-      current_user: current_user,
-      params: {
-        ref: @ref,
-        path: @path,
-        return_url: params[:return_url]
-      }
-    ).execute
-
-    if service_response.success?
-      Gitlab::UsageDataCounters::StaticSiteEditorCounter.increment_views_count
-
-      @data = serialize_necessary_payload_values_to_json(service_response.payload)
-    else
-      # TODO: For now, if the service returns any error, the user is redirected
-      #       to the root project page with the error message displayed as an alert.
-      #       See https://gitlab.com/gitlab-org/gitlab/-/issues/213285#note_414808004
-      #       for discussion of plans to handle this via a page owned by the Static Site Editor.
-      flash[:alert] = service_response.message
-      redirect_to project_path(project)
-    end
+    redirect_to ide_edit_path(project, @ref, @path)
   end
 
   private

spec/controllers/projects/static_site_editor_controller_spec.rb

@@ -76,12 +76,11 @@ RSpec.describe Projects::StaticSiteEditorController do
           get :show, params: default_params
         end
 
-        it 'increases the views counter' do
-          expect(Gitlab::UsageDataCounters::StaticSiteEditorCounter).to have_received(:increment_views_count)
-        end
+        it 'redirects to the Web IDE' do
+          get :show, params: default_params
 
-        it 'renders the edit page' do
-          expect(response).to render_template(:show)
+          expected_path_regex = %r[-/ide/project/#{project.full_path}/edit/master/-/README.md]
+          expect(response).to redirect_to(expected_path_regex)
         end
 
         it 'assigns ref and path variables' do
@@ -96,62 +95,6 @@ RSpec.describe Projects::StaticSiteEditorController do
             expect(response).to have_gitlab_http_status(:not_found)
           end
         end
-
-        context 'when invalid config file' do
-          let(:service_response) { ServiceResponse.error(message: 'invalid') }
-
-          it 'redirects to project page and flashes error message' do
-            expect(response).to redirect_to(project_path(project))
-            expect(controller).to set_flash[:alert].to('invalid')
-          end
-        end
-
-        context 'with a service response payload containing multiple data types' do
-          let(:data) do
-            {
-              a_string: 'string',
-              an_array: [
-                {
-                  foo: 'bar'
-                }
-              ],
-              an_integer: 123,
-              a_hash: {
-                a_deeper_hash: {
-                  foo: 'bar'
-                }
-              },
-              a_boolean: true,
-              a_nil: nil
-            }
-          end
-
-          let(:assigns_data) { assigns(:data) }
-
-          it 'leaves data values which are strings as strings' do
-            expect(assigns_data[:a_string]).to eq('string')
-          end
-
-          it 'leaves data values which are integers as integers' do
-            expect(assigns_data[:an_integer]).to eq(123)
-          end
-
-          it 'serializes data values which are booleans to JSON' do
-            expect(assigns_data[:a_boolean]).to eq('true')
-          end
-
-          it 'serializes data values which are arrays to JSON' do
-            expect(assigns_data[:an_array]).to eq('[{"foo":"bar"}]')
-          end
-
-          it 'serializes data values which are hashes to JSON' do
-            expect(assigns_data[:a_hash]).to eq('{"a_deeper_hash":{"foo":"bar"}}')
-          end
-
-          it 'serializes data values which are nil to an empty string' do
-            expect(assigns_data[:a_nil]).to eq('')
-          end
-        end
       end
     end
   end

spec/features/static_site_editor_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe 'Static Site Editor' do
-  include ContentSecurityPolicyHelpers
-
-  let_it_be(:user) { create(:user) }
-  let_it_be(:project) { create(:project, :public, :repository) }
-
-  let(:sse_path) { project_show_sse_path(project, 'master/README.md') }
-
-  before_all do
-    project.add_developer(user)
-  end
-
-  before do
-    sign_in(user)
-  end
-
-  context "when no config file is present" do
-    before do
-      visit sse_path
-    end
-
-    it 'renders SSE page with all generated config values and default config file values' do
-      node = page.find('#static-site-editor')
-
-      # assert generated config values are present
-      expect(node['data-base-url']).to eq("/#{project.full_path}/-/sse/master%2FREADME.md")
-      expect(node['data-branch']).to eq('master')
-      expect(node['data-commit-id']).to match(/\A[0-9a-f]{40}\z/)
-      expect(node['data-is-supported-content']).to eq('true')
-      expect(node['data-merge-requests-illustration-path'])
-        .to match(%r{/assets/illustrations/merge_requests-.*\.svg})
-      expect(node['data-namespace']).to eq(project.namespace.full_path)
-      expect(node['data-project']).to eq(project.path)
-      expect(node['data-project-id']).to eq(project.id.to_s)
-
-      # assert default config file values are present
-      expect(node['data-image-upload-path']).to eq('source/images')
-      expect(node['data-mounts']).to eq('[{"source":"source","target":""}]')
-      expect(node['data-static-site-generator']).to eq('middleman')
-    end
-  end
-
-  context "when a config file is present" do
-    let(:config_file_yml) do
-      <<~YAML
-        image_upload_path: custom-image-upload-path
-        mounts:
-          - source: source1
-            target: ""
-          - source: source2
-            target: target2
-        static_site_generator: middleman
-      YAML
-    end
-
-    before do
-      allow_next_instance_of(Repository) do |repository|
-        allow(repository).to receive(:blob_data_at).and_return(config_file_yml)
-      end
-
-      visit sse_path
-    end
-
-    it 'renders Static Site Editor page values read from config file' do
-      node = page.find('#static-site-editor')
-
-      # assert user-specified config file values are present
-      expected_mounts = '[{"source":"source1","target":""},{"source":"source2","target":"target2"}]'
-      expect(node['data-image-upload-path']).to eq('custom-image-upload-path')
-      expect(node['data-mounts']).to eq(expected_mounts)
-      expect(node['data-static-site-generator']).to eq('middleman')
-    end
-  end
-
-  describe 'Static Site Editor Content Security Policy' do
-    subject { response_headers['Content-Security-Policy'] }
-
-    context 'when no global CSP config exists' do
-      before do
-        setup_csp_for_controller(Projects::StaticSiteEditorController)
-      end
-
-      it 'does not add CSP directives' do
-        visit sse_path
-
-        is_expected.to be_blank
-      end
-    end
-
-    context 'when a global CSP config exists' do
-      let_it_be(:cdn_url) { 'https://some-cdn.test' }
-      let_it_be(:youtube_url) { 'https://www.youtube.com' }
-
-      before do
-        csp = ActionDispatch::ContentSecurityPolicy.new do |p|
-          p.frame_src :self, cdn_url
-        end
-
-        setup_existing_csp_for_controller(Projects::StaticSiteEditorController, csp)
-      end
-
-      it 'appends youtube to the CSP frame-src policy' do
-        visit sse_path
-
-        is_expected.to eql("frame-src 'self' #{cdn_url} #{youtube_url}")
-      end
-    end
-  end
-end