feat: LSDV-3936: Task history is stored on the backend (#1181)

* feat: lsdv-3936: Task history is stored on the backend

* Update src/stores/AppStore.js

Co-authored-by: bmartel <[email protected]>

---------

Co-authored-by: bmartel <[email protected]>

Author: juliosgarbi

src/components/App/App.js

@@ -78,11 +78,9 @@ class App extends Component {
       >
         <Result status="success" title={getEnv(this.props.store).messages.NO_NEXT_TASK} />
         <Block name="sub__result">You have completed all tasks in the queue!</Block>
-        {store.canGoPrevTask && (
-          <Button onClick={() => store.prevTask()} look="outlined" style={{ margin: '16px 0' }}>
-            Go to Previous Task
-          </Button>
-        )}
+        <Button onClick={e => store.prevTask(e, true)} look="outlined" style={{ margin: '16px 0' }}>
+          Go to Previous Task
+        </Button>
       </Block>
     );
   }

src/stores/AppStore.js

@@ -435,22 +435,25 @@ export default types
       });
     }
 
+    function setTaskHistory(taskHistory) {
+      self.taskHistory = taskHistory;
+    }
+
     /**
      *
      * @param {*} taskObject
      * @param {*[]} taskHistory
      */
-    function assignTask(taskObject, taskHistory) {
+    function assignTask(taskObject) {
       if (taskObject && !Utils.Checkers.isString(taskObject.data)) {
         taskObject = {
           ...taskObject,
           data: JSON.stringify(taskObject.data),
         };
       }
       self.task = Task.create(taskObject);
-      if (taskHistory) {
-        self.taskHistory = taskHistory;
-      } else if (!self.taskHistory.some((x) => x.taskId === self.task.id)) {
+
+      if (!self.taskHistory.some((x) => x.taskId === self.task.id)) {
         self.taskHistory.push({
           taskId: self.task.id,
           annotationId: null,
@@ -734,9 +737,11 @@ export default types
       }
     }
 
-    function prevTask() {
-      if (self.canGoPrevTask) {
-        const { taskId, annotationId } = self.taskHistory[self.taskHistory.findIndex((x) => x.taskId === self.task.id) - 1];
+    function prevTask(e, shouldGoBack = false) {
+      const length = shouldGoBack ? self.taskHistory.length - 1 : self.taskHistory.findIndex((x) => x.taskId === self.task.id) - 1;
+
+      if (self.canGoPrevTask || shouldGoBack) {
+        const { taskId, annotationId } = self.taskHistory[length];
 
         getEnv(self).events.invoke('prevTask', taskId, annotationId);
       }
@@ -772,6 +777,7 @@ export default types
 
       skipTask,
       unskipTask,
+      setTaskHistory,
       submitDraft,
       submitAnnotation,
       updateAnnotation,