encryption of note history if the note is encrypted

public/javascripts/encryption.js

@@ -235,10 +235,37 @@ function encryptNoteAndSendToServer() {
 
         saveNoteToServer(note);
 
+        encryptNoteHistory(note.detail.note_id);
+
         setNoteBackgroundIfEncrypted(note);
     });
 }
 
+function encryptNoteHistory(noteId) {
+    $.ajax({
+        url: baseApiUrl + 'notes-history/' + noteId + "?encryption=0",
+        type: 'GET',
+        success: result => {
+            for (const row of result) {
+                row.note_title = encryptString(row.note_title);
+                row.note_text = encryptString(row.note_text);
+
+                row.encryption = 1;
+
+                $.ajax({
+                    url: baseApiUrl + 'notes-history',
+                    type: 'PUT',
+                    contentType: 'application/json',
+                    data: JSON.stringify(row),
+                    success: result => console.log('Note history ' + row.note_history_id + ' encrypted'),
+                    error: () => alert("Error encrypting note history.")
+                });
+            }
+        },
+        error: () => alert("Error getting note history.")
+    });
+}
+
 function decryptNoteAndSendToServer() {
     handleEncryption(true, true, () => {
         const note = globalCurrentNote;

public/javascripts/note_history.js

@@ -24,7 +24,7 @@ function showNoteHistoryDialog(noteId, noteHistoryId) {
                 const dateModified = getDateFromTS(row.date_modified_to);
 
                 $("#note-history-list").append($('<option>', {
-                    value: row.id,
+                    value: row.note_history_id,
                     text: formatDateTime(dateModified)
                 }));
             }
@@ -46,8 +46,16 @@ $(document).bind('keydown', 'alt+h', showCurrentNoteHistory);
 $("#note-history-list").on('change', () => {
     const optVal = $("#note-history-list").find(":selected").val();
 
-    const historyItem = globalHistoryItems.find(r => r.id == optVal); // non-strict comparison is important here!!!
+    const historyItem = globalHistoryItems.find(r => r.note_history_id === optVal);
 
-    $("#note-history-title").html(historyItem.note_title);
-    $("#note-history-content").html(historyItem.note_text);
+    let noteTitle = historyItem.note_title;
+    let noteText = historyItem.note_text;
+
+    if (historyItem.encryption > 0) {
+        noteTitle = decryptString(noteTitle);
+        noteText = decryptString(noteText);
+    }
+
+    $("#note-history-title").html(noteTitle);
+    $("#note-history-content").html(noteText);
 });

routes/api/note_history.js

@@ -7,10 +7,28 @@ const auth = require('../../services/auth');
 
 router.get('/:noteId', auth.checkApiAuth, async (req, res, next) => {
     const noteId = req.params.noteId;
+    const encryption = req.query.encryption;
 
-    const history = await sql.getResults("select * from notes_history where note_id = ? order by date_modified_to desc", [noteId]);
+    let history;
+
+    if (encryption === undefined) {
+        history = await sql.getResults("select * from notes_history where note_id = ? order by date_modified_to desc", [noteId]);
+    }
+    else {
+        history = await sql.getResults("select * from notes_history where note_id = ? and encryption = ? order by date_modified_to desc", [noteId, encryption]);
+    }
 
     res.send(history);
 });
 
+router.put('/', auth.checkApiAuth, async (req, res, next) => {
+    await sql.doInTransaction(async () => {
+        await sql.replace("notes_history", req.body);
+
+        await sql.addNoteHistorySync(req.body.note_history_id);
+    });
+
+    res.send();
+});
+
 module.exports = router;