basic entities for attributes (unification of labels and relations)

src/services/attributes.js

@@ -0,0 +1,52 @@
+"use strict";
+
+const repository = require('./repository');
+const Attribute = require('../entities/attribute');
+
+const BUILTIN_ATTRIBUTES = [
+    'disableVersioning',
+    'calendarRoot',
+    'archived',
+    'excludeFromExport',
+    'run',
+    'manualTransactionHandling',
+    'disableInclusion',
+    'appCss',
+    'hideChildrenOverview'
+];
+
+async function getNotesWithAttribute(name, value) {
+    let notes;
+
+    if (value !== undefined) {
+        notes = await repository.getEntities(`SELECT notes.* FROM notes JOIN attributes USING(noteId) 
+          WHERE notes.isDeleted = 0 AND attributes.isDeleted = 0 AND attributes.name = ? AND attributes.value = ?`, [name, value]);
+    }
+    else {
+        notes = await repository.getEntities(`SELECT notes.* FROM notes JOIN attributes USING(noteId) 
+          WHERE notes.isDeleted = 0 AND attributes.isDeleted = 0 AND attributes.name = ?`, [name]);
+    }
+
+    return notes;
+}
+
+async function getNoteWithAttribute(name, value) {
+    const notes = await getNotesWithAttribute(name, value);
+
+    return notes.length > 0 ? notes[0] : null;
+}
+
+async function createAttribute(noteId, name, value = "") {
+    return await new Attribute({
+        noteId: noteId,
+        name: name,
+        value: value
+    }).save();
+}
+
+module.exports = {
+    getNotesWithAttribute,
+    getNoteWithAttribute,
+    createAttribute,
+    BUILTIN_ATTRIBUTES
+};