fixing authority on server quizzes still broken

nextjs/src/app/course/[courseName]/lecture/[lectureDay]/EditLecture.tsx

@@ -27,16 +27,14 @@ export default function EditLecture({ lectureDay }: { lectureDay: string }) {
     .flatMap(({ lectures }) => lectures.map((lecture) => lecture))
     .find((l) => l.date === lectureDay);
 
-  const serverVersionOfText = getLectureTextOrDefault(lecture, lectureDay);
+  const startingText = getLectureTextOrDefault(lecture, lectureDay);
 
-  const [text, setText] = useState(serverVersionOfText);
+  const [text, setText] = useState(startingText);
   const [updateMonacoKey, setUpdateMonacoKey] = useState(1);
   const [error, setError] = useState("");
 
   const [clientDataUpdatedAt, setClientDataUpdatedAt] =
     useState(serverDataUpdatedAt);
-  const clientIsAuthoritative = serverDataUpdatedAt <= clientDataUpdatedAt;
-  console.log("client it authoritative", clientIsAuthoritative);
 
   const textUpdate = useCallback((t: string) => {
     setText(t);
@@ -45,6 +43,9 @@ export default function EditLecture({ lectureDay }: { lectureDay: string }) {
 
   useEffect(() => {
     const delay = 500;
+    const clientIsAuthoritative = serverDataUpdatedAt <= clientDataUpdatedAt;
+    console.log("client is authoritative", clientIsAuthoritative);
+
     const handler = setTimeout(() => {
       try {
         const parsed = parseLecture(text);
@@ -75,15 +76,7 @@ export default function EditLecture({ lectureDay }: { lectureDay: string }) {
     return () => {
       clearTimeout(handler);
     };
-  }, [
-    clientIsAuthoritative,
-    courseName,
-    lecture,
-    settings,
-    text,
-    textUpdate,
-    updateLecture,
-  ]);
+  }, [courseName, lecture, settings, text, textUpdate, updateLecture]);
 
   return (
     <div className="h-full flex flex-col">

nextjs/src/app/course/[courseName]/modules/[moduleName]/assignment/[assignmentName]/EditAssignment.tsx

@@ -8,7 +8,7 @@ import {
   LocalAssignment,
   localAssignmentMarkdown,
 } from "@/models/local/assignment/localAssignment";
-import { useEffect, useState } from "react";
+import { useCallback, useEffect, useState } from "react";
 import AssignmentPreview from "./AssignmentPreview";
 import { getModuleItemUrl } from "@/services/urlUtils";
 import { useCourseContext } from "@/app/course/[courseName]/context/courseContext";
@@ -26,38 +26,35 @@ export default function EditAssignment({
 }: {
   assignmentName: string;
   moduleName: string;
-}) {
-  const [_, {dataUpdatedAt}] = useAssignmentQuery(moduleName, assignmentName);
-  return (
-    <InnerEditAssignment
-      key={dataUpdatedAt}
-      assignmentName={assignmentName}
-      moduleName={moduleName}
-    />
-  );
-}
-export function InnerEditAssignment({
-  moduleName,
-  assignmentName,
-}: {
-  assignmentName: string;
-  moduleName: string;
 }) {
   const router = useRouter();
   const { courseName } = useCourseContext();
   const [settings] = useLocalCourseSettingsQuery();
-  const [assignment] = useAssignmentQuery(moduleName, assignmentName);
+  const [assignment, { dataUpdatedAt: serverDataUpdatedAt }] =
+    useAssignmentQuery(moduleName, assignmentName);
   const updateAssignment = useUpdateAssignmentMutation();
 
   const [assignmentText, setAssignmentText] = useState(
     localAssignmentMarkdown.toMarkdown(assignment)
   );
 
+  const [updateMonacoKey, setUpdateMonacoKey] = useState(1);
+  const [clientDataUpdatedAt, setClientDataUpdatedAt] =
+    useState(serverDataUpdatedAt);
+
+  const textUpdate = useCallback((t: string) => {
+    setAssignmentText(t);
+    setClientDataUpdatedAt(Date.now());
+  }, []);
+
   const [error, setError] = useState("");
   const [showHelp, setShowHelp] = useState(false);
 
   useEffect(() => {
     const delay = 500;
+    const clientIsAuthoritative = serverDataUpdatedAt <= clientDataUpdatedAt;
+    console.log("client is authoritative", clientIsAuthoritative);
+
     const handler = setTimeout(() => {
       try {
         const updatedAssignment: LocalAssignment =
@@ -66,6 +63,7 @@ export function InnerEditAssignment({
           localAssignmentMarkdown.toMarkdown(assignment) !==
           localAssignmentMarkdown.toMarkdown(updatedAssignment)
         ) {
+          if (clientIsAuthoritative) {
             console.log("updating assignment");
             updateAssignment
               .mutateAsync({
@@ -87,6 +85,13 @@ export function InnerEditAssignment({
                     )
                   );
               });
+          } else {
+            console.log(
+              "client not authoritative, updating client with server data"
+            );
+            textUpdate(localAssignmentMarkdown.toMarkdown(assignment));
+            setUpdateMonacoKey((k) => k + 1);
+          }
         }
         setError("");
       } catch (e: any) {
@@ -116,7 +121,11 @@ export function InnerEditAssignment({
           </pre>
         )}
         <div className="flex-1 h-full">
-          <MonacoEditor value={assignmentText} onChange={setAssignmentText} />
+          <MonacoEditor
+            key={updateMonacoKey}
+            value={assignmentText}
+            onChange={textUpdate}
+          />
         </div>
         <div className="flex-1 h-full">
           <div className="text-red-300">{error && error}</div>

nextjs/src/app/course/[courseName]/modules/[moduleName]/quiz/[quizName]/EditQuiz.tsx

@@ -1,7 +1,7 @@
 "use client";
 import { MonacoEditor } from "@/components/editor/MonacoEditor";
 import { quizMarkdownUtils } from "@/models/local/quiz/utils/quizMarkdownUtils";
-import { useEffect, useState } from "react";
+import { useCallback, useEffect, useState } from "react";
 import QuizPreview from "./QuizPreview";
 import { QuizButtons } from "./QuizButton";
 import ClientOnly from "@/components/ClientOnly";
@@ -62,7 +62,7 @@ export default function EditQuiz({
   quizName: string;
   moduleName: string;
 }) {
-  const [_, {dataUpdatedAt}] = useQuizQuery(moduleName, quizName);
+  const [_, { dataUpdatedAt }] = useQuizQuery(moduleName, quizName);
   return (
     <InnerEditQuiz
       key={dataUpdatedAt}
@@ -80,25 +80,40 @@ export function InnerEditQuiz({
 }) {
   const router = useRouter();
   const { courseName } = useCourseContext();
-  const [quiz] = useQuizQuery(moduleName, quizName);
+  const [quiz, { dataUpdatedAt: serverDataUpdatedAt }] = useQuizQuery(
+    moduleName,
+    quizName
+  );
   const updateQuizMutation = useUpdateQuizMutation();
   const [quizText, setQuizText] = useState(quizMarkdownUtils.toMarkdown(quiz));
+
+  const [updateMonacoKey, setUpdateMonacoKey] = useState(1);
+  const [clientDataUpdatedAt, setClientDataUpdatedAt] =
+    useState(serverDataUpdatedAt);
   const [error, setError] = useState("");
   const [showHelp, setShowHelp] = useState(false);
 
+  const textUpdate = useCallback((t: string) => {
+    setQuizText(t);
+    setClientDataUpdatedAt(Date.now());
+  }, []);
+
   useEffect(() => {
     const delay = 1000;
+    const clientIsAuthoritative = serverDataUpdatedAt <= clientDataUpdatedAt;
+    console.log("client is authoritative", clientIsAuthoritative);
+
     const handler = setTimeout(async () => {
       try {
-        console.log("checking if the same...");
         if (
           quizMarkdownUtils.toMarkdown(quiz) !==
           quizMarkdownUtils.toMarkdown(
             quizMarkdownUtils.parseMarkdown(quizText)
           )
         ) {
+          if (clientIsAuthoritative) {
             const updatedQuiz = quizMarkdownUtils.parseMarkdown(quizText);
-          updateQuizMutation
+            await updateQuizMutation
               .mutateAsync({
                 quiz: updatedQuiz,
                 moduleName,
@@ -118,6 +133,13 @@ export function InnerEditQuiz({
                     )
                   );
               });
+          } else {
+            console.log(
+              "client not authoritative, updating client with server data"
+            );
+            textUpdate(quizMarkdownUtils.toMarkdown(quiz));
+            setUpdateMonacoKey((k) => k + 1);
+          }
         }
         setError("");
       } catch (e: any) {
@@ -129,15 +151,19 @@ export function InnerEditQuiz({
       clearTimeout(handler);
     };
   }, [
+    clientDataUpdatedAt,
     courseName,
     moduleName,
     quiz,
     quizName,
     quizText,
     router,
+    serverDataUpdatedAt,
+    textUpdate,
     updateQuizMutation,
   ]);
 
+  console.log("updateMonacoKey", updateMonacoKey);
   return (
     <div className="h-full flex flex-col align-middle px-1">
       <div className={"min-h-96 h-full flex flex-row w-full"}>
@@ -147,7 +173,11 @@ export function InnerEditQuiz({
           </pre>
         )}
         <div className="flex-1 h-full">
-          <MonacoEditor value={quizText} onChange={setQuizText} />
+          <MonacoEditor
+            key={updateMonacoKey}
+            value={quizText}
+            onChange={textUpdate}
+          />
         </div>
         <div className="flex-1 h-full">
           <div className="text-red-300">{error && error}</div>