Merge pull request #20501 from dukenv0307/fix/19048

Auto assign when create a task in a DM

src/libs/actions/Task.js

@@ -424,6 +424,23 @@ function setShareDestinationValue(shareDestination) {
     Onyx.merge(ONYXKEYS.TASK, {shareDestination});
 }
 
+/**
+ * Auto-assign participant when creating a task in a DM
+ * @param {String} reportID
+ */
+
+function setAssigneeValueWithParentReportID(reportID) {
+    const report = ReportUtils.getReport(reportID);
+    const isDefault = !(ReportUtils.isChatRoom(report) || ReportUtils.isPolicyExpenseChat(report));
+    const participants = lodashGet(report, 'participants', []);
+    const hasMultipleParticipants = participants.length > 1;
+    if (!isDefault || hasMultipleParticipants || report.parentReportID) {
+        return;
+    }
+
+    Onyx.merge(ONYXKEYS.TASK, {assignee: participants[0]});
+}
+
 /**
  * Sets the assignee value for the task and checks for an existing chat with the assignee
  * If there is no existing chat, it creates an optimistic chat report
@@ -591,6 +608,7 @@ export {
     setTaskReport,
     setDetailsValue,
     setAssigneeValue,
+    setAssigneeValueWithParentReportID,
     setShareDestinationValue,
     clearOutTaskInfo,
     reopenTask,

src/pages/tasks/NewTaskPage.js

@@ -86,6 +86,12 @@ const NewTaskPage = (props) => {
             setAssignee(displayDetails);
         }
 
+        // If we don't have an assignee and we are creating a task from a report
+        // this allows us to auto assign a participant of the report.
+        if (!props.task.assignee && props.task.parentReportID) {
+            TaskUtils.setAssigneeValueWithParentReportID(props.task.parentReportID);
+        }
+
         // We only set the parentReportID if we are creating a task from a report
         // this allows us to go ahead and set that report as the share destination
         // and disable the share destination selector