Prefs manager TS

app/assets/javascripts/services/preferencesManager.ts

@@ -0,0 +1,75 @@
+import { WebApplication } from '@/application';
+import {
+  SNPredicate,
+  ContentType,
+  ApplicationService,
+  SNUserPrefs,
+  WebPrefKey,
+  UserPrefsMutator
+} from 'snjs';
+import { FillItemContent } from '@/../../../../snjs/dist/@types/models/generator';
+
+export class PreferencesManager extends ApplicationService {
+
+  private userPreferences!: SNUserPrefs
+
+  /** @override */
+  async onAppLaunch() {
+    super.onAppLaunch();
+    this.streamPreferences();
+    this.loadSingleton();
+  }
+
+  get webApplication() {
+    return this.application as WebApplication;
+  }
+
+  streamPreferences() {
+    this.application!.streamItems(
+      ContentType.UserPrefs,
+      () => {
+        this.loadSingleton();
+      }
+    );
+  }
+
+  async loadSingleton() {
+    const contentType = ContentType.UserPrefs;
+    const predicate = new SNPredicate('content_type', '=', contentType);
+    this.userPreferences = (await this.application!.singletonManager!.findOrCreateSingleton(
+      predicate,
+      contentType,
+      FillItemContent({})
+    )) as SNUserPrefs;
+    this.preferencesDidChange();
+  }
+
+  preferencesDidChange() {
+    this.webApplication.getAppState().setUserPreferences(this.userPreferences);
+  }
+
+  syncUserPreferences() {
+    if (this.userPreferences) {
+      this.application!.saveItem(this.userPreferences.uuid);
+    }
+  }
+
+  getValue(key: WebPrefKey, defaultValue: any) {
+    if (!this.userPreferences) { return defaultValue; }
+    const value = this.userPreferences.getPref(key);
+    return (value !== undefined && value !== null) ? value : defaultValue;
+  }
+
+  setUserPrefValue(key: WebPrefKey, value: any, sync = false) {
+    this.application!.changeItem(
+      this.userPreferences.uuid,
+      (m) => {
+        const mutator = m as UserPrefsMutator;
+        mutator.setWebPref(key, value);
+      }
+    )
+    if (sync) {
+      this.syncUserPreferences();
+    }
+  }
+}