Feature(code-storage): clear code storage on challenge completion

client/sagas/code-storage-saga.js

@@ -50,6 +50,15 @@ function legacyToFile(code, files, key) {
   return { [key]: updateContents(code, files[key]) };
 }
 
+export function clearCodeSaga(actions, getState) {
+  return actions
+    ::ofType(types.clearSavedCode)
+    .map(() => {
+      const { challengesApp: { id = '' } } = getState();
+      store.clear(id);
+      return null;
+    });
+}
 export function saveCodeSaga(actions, getState) {
   return actions
     ::ofType(types.saveCode)
@@ -114,4 +123,4 @@ export function loadCodeSaga(actions$, getState, { window, location }) {
     });
 }
 
-export default combineSagas(saveCodeSaga, loadCodeSaga);
+export default combineSagas(saveCodeSaga, loadCodeSaga, clearCodeSaga);

common/app/routes/challenges/redux/actions.js

@@ -90,6 +90,7 @@ export const moveToNextChallenge = createAction(types.moveToNextChallenge);
 export const saveCode = createAction(types.saveCode);
 export const loadCode = createAction(types.loadCode);
 export const savedCodeFound = createAction(types.savedCodeFound);
+export const clearSavedCode = createAction(types.clearSavedCode);
 
 
 // video challenges

common/app/routes/challenges/redux/completion-saga.js

@@ -1,7 +1,10 @@
 import { Observable } from 'rx';
 
 import types from './types';
-import { moveToNextChallenge } from './actions';
+import {
+  moveToNextChallenge,
+  clearSavedCode
+} from './actions';
 
 import { challengeSelector } from './selectors';
 import { randomCompliment } from '../../../utils/get-words';
@@ -24,7 +27,8 @@ function postChallenge(url, username, _csrf, challengeInfo) {
         updateUserChallenge(
           username,
           { ...challengeInfo, lastUpdated, completedDate }
-        )
+        ),
+        clearSavedCode()
       );
     })
     .catch(createErrorObservable);

common/app/routes/challenges/redux/types.js

@@ -51,6 +51,7 @@ export default createTypes([
   'saveCode',
   'loadCode',
   'savedCodeFound',
+  'clearSavedCode',
 
   // video challenges
   'toggleQuestionView',