From 77b70b7c49a36ddee13381c5f4e4500559a70a95 Mon Sep 17 00:00:00 2001
From: Pavel Murygin <pavel.murygin@gmail.com>
Date: Thu, 14 Jan 2021 23:57:24 +0300
Subject: [PATCH] Fix text synchronization

---
 client/src/app/App.tsx                 |  6 +++---
 client/src/app/CollaborativeEditor.tsx | 22 ++++++++++++++++------
 client/src/fluence/calls.ts            |  3 ++-
 client/src/index.tsx                   |  3 ++-
 4 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/client/src/app/App.tsx b/client/src/app/App.tsx
index 055d13a..bc1d829 100644
--- a/client/src/app/App.tsx
+++ b/client/src/app/App.tsx
@@ -1,4 +1,4 @@
-import { createClient, FluenceClient } from '@fluencelabs/fluence';
+import { createClient, FluenceClient, subscribeToEvent } from '@fluencelabs/fluence';
 import { dev } from '@fluencelabs/fluence-network-environment';
 import React, { useEffect, useState } from 'react';
 
@@ -69,8 +69,8 @@ const App = () => {
                 </div>
 
                 <div className="wrapper">
-                    {/* <div>{isInRoom && client && <CollaborativeEditor />}</div> */}
-                    <div>{isInRoom && client && <UserList selfName={nickName} />}</div>
+                    <div>{isInRoom && client && <CollaborativeEditor />}</div>
+                    {/* <div>{isInRoom && client && <UserList selfName={nickName} />}</div> */}
                 </div>
             </div>
         </FluenceClientContext.Provider>
diff --git a/client/src/app/CollaborativeEditor.tsx b/client/src/app/CollaborativeEditor.tsx
index b59c5b8..233f8e2 100644
--- a/client/src/app/CollaborativeEditor.tsx
+++ b/client/src/app/CollaborativeEditor.tsx
@@ -42,16 +42,16 @@ const getUpdatedDocFromText = (oldDoc: TextDoc | null, newText: string) => {
     return newDoc;
 };
 
-const parseState = (entry: calls.Entry) => {
+const parseState = (entry: string) => {
     try {
-        const obj = JSON.parse(entry.body);
+        const obj = JSON.parse(entry);
         if (obj.fluentPadState) {
             return Automerge.load(obj.fluentPadState) as TextDoc;
         }
 
         return null;
     } catch (e) {
-        console.log('couldnt parse state format: ' + entry.body);
+        console.log('couldnt parse state format: ' + entry);
         return null;
     }
 };
@@ -59,7 +59,7 @@ const parseState = (entry: calls.Entry) => {
 const applyStates = (startingDoc: TextDoc | null, entries: calls.Entry[]) => {
     let res = startingDoc;
     for (let entry of entries) {
-        const state = parseState(entry) as TextDoc;
+        const state = parseState(entry.body) as TextDoc;
         if (state) {
             if (!res) {
                 res = state;
@@ -69,6 +69,12 @@ const applyStates = (startingDoc: TextDoc | null, entries: calls.Entry[]) => {
         }
     }
 
+    if (res === null) {
+        res = Automerge.from({
+            value: new Automerge.Text(),
+        });
+    }
+
     return res;
 };
 
@@ -78,8 +84,12 @@ export const CollaborativeEditor = () => {
 
     useEffect(() => {
         const unsub1 = subscribeToEvent(client, fluentPadServiceId, notifyTextUpdateFnName, (args, tetraplets) => {
-            console.log(args, tetraplets);
-            // TODO
+            const [stateStr, isAuthorized] = args;
+            const state = parseState(stateStr);
+            if (state && text) {
+                const newDoc = Automerge.merge(text, state);
+                setText(newDoc);
+            }
         });
 
         // don't block
diff --git a/client/src/fluence/calls.ts b/client/src/fluence/calls.ts
index ae6488a..cb7c72c 100644
--- a/client/src/fluence/calls.ts
+++ b/client/src/fluence/calls.ts
@@ -257,7 +257,7 @@ export const addEntry = async (client: FluenceClient, entry: string) => {
                 (seq 
                     (call userlistNode (userlist "get_users") [] allUsers)
                     (seq
-                        (call node (history "add") [entry token.$.["is_authenticated"]])
+                        (call historyNode (history "add") [entry token.$.["is_authenticated"]])
                         (fold allUsers.$.users! u
                             (par
                                 (seq
@@ -284,6 +284,7 @@ export const addEntry = async (client: FluenceClient, entry: string) => {
             fluentPadServiceId: fluentPadServiceId,
             notifyTextUpdate: notifyTextUpdateFnName,
         },
+        99999999,
     );
 
     await sendParticle(client, particle);
diff --git a/client/src/index.tsx b/client/src/index.tsx
index c31f257..c6c29d1 100644
--- a/client/src/index.tsx
+++ b/client/src/index.tsx
@@ -4,7 +4,8 @@ import './index.scss';
 import App from './app/App';
 import log from 'loglevel';
 
-log.setLevel(2);
+// log.setLevel('trace');
+log.setLevel('error');
 
 ReactDOM.render(
     <React.StrictMode>