Feat: raw editor ingress and egress logic (#179)

* feat: conditional rendering of olx editor.

* fix: open the raw editor if advanced is chosen

* fix: add test fix

* feat: add button to switch visual->advanced

* fix: add tests + lint for visual->advanced button

* feat: revert to advanced if parser fails

* fix: improve coverage

* feat: add confirm dialog to switch

* fix: load settings with advanced

* fix: refactor + lint fix

src/editors/containers/ProblemEditor/data/OLXParser.js

@@ -331,10 +331,16 @@ export class OLXParser {
   getProblemType() {
     const problemKeys = Object.keys(this.problem);
     const intersectedProblems = _.intersection(Object.values(ProblemTypeKeys), problemKeys);
-
     if (intersectedProblems.length === 0) {
-      return null;
+      // a blank problem is a problem which contains only `<problem></problem>` as it's olx.
+      // blank problems are not given types, so that a type may be selected.
+      if (problemKeys.length === 1 && problemKeys[0] === '#text' && this.problem[problemKeys[0]] === '') {
+        return null;
+      }
+      // if we have no matching problem type, the problem is advanced.
+      return ProblemTypeKeys.ADVANCED;
     }
+    // make sure compound problems are treated as advanced
     if (intersectedProblems.length > 1) {
       return ProblemTypeKeys.ADVANCED;
     }
@@ -369,7 +375,10 @@ export class OLXParser {
         answersObject = this.parseMultipleChoiceAnswers(ProblemTypeKeys.SINGLESELECT, 'choicegroup', 'choice');
         break;
       case ProblemTypeKeys.ADVANCED:
-        break;
+        return {
+          problemType,
+          settings: {},
+        };
       default:
         // if problem is unset, return null
         return {};