server-ts: Port revisions service

src/services/revisions.ts

@@ -0,0 +1,49 @@
+"use strict";
+
+import log = require('./log');
+import sql = require('./sql');
+import protectedSessionService = require('./protected_session');
+import dateUtils = require('./date_utils');
+import BNote = require('../becca/entities/bnote');
+
+function protectRevisions(note: BNote) {
+    if (!protectedSessionService.isProtectedSessionAvailable()) {
+        throw new Error(`Cannot (un)protect revisions of note '${note.noteId}' without active protected session`);
+    }
+
+    for (const revision of note.getRevisions()) {
+        if (note.isProtected !== revision.isProtected) {
+            try {
+                const content = revision.getContent();
+
+                revision.isProtected = !!note.isProtected;
+
+                // this will force de/encryption
+                revision.setContent(content, {forceSave: true});
+            } catch (e) {
+                log.error(`Could not un/protect note revision '${revision.revisionId}'`);
+
+                throw e;
+            }
+        }
+
+        for (const attachment of revision.getAttachments()) {
+            if (note.isProtected !== attachment.isProtected) {
+                try {
+                    const content = attachment.getContent();
+
+                    attachment.isProtected = note.isProtected;
+                    attachment.setContent(content, {forceSave: true});
+                } catch (e) {
+                    log.error(`Could not un/protect attachment '${attachment.attachmentId}'`);
+
+                    throw e;
+                }
+            }
+        }
+    }
+}
+
+module.exports = {
+    protectRevisions
+};