reddit plugin refactoring, performance improvemnts etc.

services/attributes.js

@@ -0,0 +1,29 @@
+const sql = require('./sql');
+const utils = require('./utils');
+const sync_table = require('./sync_table');
+
+async function getNoteIdWithAttribute(name, value) {
+    return await sql.getFirstValue(`SELECT notes.note_id FROM notes JOIN attributes USING(note_id) 
+          WHERE notes.is_deleted = 0 AND attributes.name = ? AND attributes.value = ?`, [name, value]);
+}
+
+async function createAttribute(noteId, name, value = null, sourceId = null) {
+    const now = utils.nowDate();
+    const attributeId = utils.newAttributeId();
+
+    await sql.insert("attributes", {
+        attribute_id: attributeId,
+        note_id: noteId,
+        name: name,
+        value: value,
+        date_modified: now,
+        date_created: now
+    });
+
+    await sync_table.addAttributeSync(attributeId, sourceId);
+}
+
+module.exports = {
+    getNoteIdWithAttribute,
+    createAttribute
+};