#126, added skeleton of note relations, copied from similar concept of labels

src/routes/api/relations.js

@@ -0,0 +1,63 @@
+"use strict";
+
+const sql = require('../../services/sql');
+const relationService = require('../../services/relations');
+const repository = require('../../services/repository');
+const Relation = require('../../entities/relation');
+
+async function getNoteRelations(req) {
+    const noteId = req.params.noteId;
+
+    return await repository.getEntities("SELECT * FROM relations WHERE isDeleted = 0 AND sourceNoteId = ? ORDER BY position, dateCreated", [noteId]);
+}
+
+async function updateNoteRelations(req) {
+    const noteId = req.params.noteId;
+    const relations = req.body;
+
+    for (const relation of relations) {
+        let relationEntity;
+
+        if (relation.labelId) {
+            relationEntity = await repository.getRelation(relation.relationId);
+        }
+        else {
+            // if it was "created" and then immediatelly deleted, we just don't create it at all
+            if (relation.isDeleted) {
+                continue;
+            }
+
+            relationEntity = new Relation();
+            relationEntity.sourceNoteId = noteId;
+        }
+
+        relationEntity.name = relation.name;
+        relationEntity.targetNoteId = relation.targetNoteId;
+        relationEntity.position = relation.position;
+        relationEntity.isDeleted = relation.isDeleted;
+
+        await relationEntity.save();
+    }
+
+    return await repository.getEntities("SELECT * FROM relations WHERE isDeleted = 0 AND sourceNoteId = ? ORDER BY position, dateCreated", [noteId]);
+}
+
+async function getAllRelationNames() {
+    const names = await sql.getColumn("SELECT DISTINCT name FROM relations WHERE isDeleted = 0");
+
+    for (const relationName of relationService.BUILTIN_RELATIONS) {
+        if (!names.includes(relationName)) {
+            names.push(relationName);
+        }
+    }
+
+    names.sort();
+
+    return names;
+}
+
+module.exports = {
+    getNoteRelations,
+    updateNoteRelations,
+    getAllRelationNames
+};