objects IDs counter refactoring

tests/API.test.js

@@ -12,7 +12,7 @@ class MockDb {
         this.data = {};
         this.lastId = 0;
     }
-    async getLastId() { return this.lastId; }
+    async getId() { return this.lastId; }
     async create(collection, obj) {
         this.lastId++;
         obj.id = this.lastId;
@@ -43,7 +43,7 @@ class GamesManager {
     init(app) {
         const db = app.db;
         this.create = async (ctx, data) => {
-            data.id = (await db.getLastId()) + 1;
+            data.id = await db.getId('games');
             await db.create('games', data);
             return data;
         };

tests/backend.test.js

@@ -45,7 +45,7 @@ function createMockDb() {
     let store = {};
     let lastId = 0;
     return {
-        getLastId: vi.fn(async () => lastId),
+        getId: vi.fn(async () => lastId),
         create: vi.fn(async (coll, obj) => { lastId++; obj.id = lastId; store[obj.id] = { ...obj }; }),
         get: vi.fn(async (coll, query) => store[query.id]),
         update: vi.fn(async (coll, query, obj) => { store[query.id] = { ...store[query.id], ...obj }; }),