feat: implement fluent api

packages/core/models/notebook.js

@@ -0,0 +1,39 @@
+import Notebooks from "../collections/notebooks";
+import Topics from "../collections/topics";
+
+export default class Notebook {
+  /**
+   *
+   * @param {Notebooks} notebooks
+   * @param {Object} notebook
+   */
+  constructor(notebooks, notebook) {
+    this.notebook = notebook;
+    this.notebooks = notebooks;
+  }
+
+  get title() {
+    return this.notebook.title;
+  }
+
+  get data() {
+    return this.notebook;
+  }
+
+  get topics() {
+    return new Topics(this.notebooks, this.notebooks.notes, this.notebook.id);
+  }
+
+  toggle(prop) {
+    this.notebook[prop] = !this.notebook[prop];
+    return this.notebooks.add(this.notebook);
+  }
+
+  pin() {
+    return this.toggle("pinned");
+  }
+
+  favorite() {
+    return this.toggle("favorite");
+  }
+}