fixed update of encrypted note

src/templates/app.html

@@ -42,7 +42,7 @@
         <div style="float: left; margin: 0 5px 5px 5px;" class="hide-toggle">
           <input autocomplete="off" value="Welcome to Notecase web app!" id="noteTitle" style="font-size: x-large; border: 0; width: 600px;" tabindex="1">
 
-          <button class="btn btn-sm" onclick="encryptNote();">Encrypt</button>
+          <button class="btn btn-sm" onclick="encryptNoteAndSendToServer();">Encrypt</button>
         </div>
 
         <div style="clear: both; height: 0"></div>

static/js/note.js

@@ -67,7 +67,9 @@ function saveNoteIfChanged(callback) {
 
     updateNoteFromInputs(note);
 
-    saveNoteToServer(note, callback);
+    encryptNoteIfNecessary(note).then(note => {
+        saveNoteToServer(note, callback);
+    });
 }
 
 setInterval(saveNoteIfChanged, 5000);
@@ -160,16 +162,7 @@ function loadNote(noteId) {
             $("#noteTitle").focus().select();
         }
 
-        let decryptPromise;
-
-        if (note.detail.encryption === 1) {
-            decryptPromise = decryptNote(note.detail.note_text);
-        }
-        else {
-            decryptPromise = Promise.resolve(note.detail.note_text);
-        }
-
-        decryptPromise.then(decrypted => {
+        decryptNoteIfNecessary(note).then(decrypted => {
             note.detail.note_text = decrypted;
 
             let noteText = notecase2html(note);
@@ -262,12 +255,17 @@ function getAes() {
     });
 }
 
-function encryptNote() {
-    getAes().then(aes => {
-        const note = globalNote;
-
-        updateNoteFromInputs(note);
+function encryptNoteIfNecessary(note) {
+    if (note.detail.encryption === 0) {
+        return Promise.resolve(note);
+    }
+    else {
+        return encryptNote(note);
+    }
+}
 
+function encryptNote(note) {
+    return getAes().then(aes => {
         const noteJson = note.detail.note_text;
 
         const noteBytes = aesjs.utils.utf8.toBytes(noteJson);
@@ -275,9 +273,16 @@ function encryptNote() {
         const encryptedBytes = aes.encrypt(noteBytes);
 
         // To print or store the binary data, you may convert it to hex
-        const encryptedBase64 = uint8ToBase64(encryptedBytes);
+        note.detail.note_text = uint8ToBase64(encryptedBytes);
 
-        note.detail.note_text = encryptedBase64;
+        return note;
+    });
+}
+
+function encryptNoteAndSendToServer() {
+    updateNoteFromInputs(globalNote);
+
+    encryptNote(globalNote).then(note => {
         note.detail.encryption = 1;
 
         saveNoteToServer(note);
@@ -286,6 +291,18 @@ function encryptNote() {
     });
 }
 
+function decryptNoteIfNecessary(note) {
+    let decryptPromise;
+
+    if (note.detail.encryption === 1) {
+        decryptPromise = decryptNote(note.detail.note_text);
+    }
+    else {
+        decryptPromise = Promise.resolve(note.detail.note_text);
+    }
+    return decryptPromise;
+}
+
 function decryptNote(encryptedBase64) {
     return getAes().then(aes => {
         const encryptedBytes = base64ToUint8Array(encryptedBase64);