Huge refactoring of the feature pipeline, WIP

Logic/FeatureSource/Sources/LocalStorageSource.ts

@@ -0,0 +1,35 @@
+import FeatureSource from "./FeatureSource";
+import {UIEventSource} from "../UIEventSource";
+import LocalStorageSaverActor from "./LocalStorageSaverActor";
+import LayoutConfig from "../../Models/ThemeConfig/LayoutConfig";
+
+export default class LocalStorageSource implements FeatureSource {
+    public features: UIEventSource<{ feature: any; freshness: Date }[]>;
+    public readonly name = "LocalStorageSource";
+
+    constructor(layout: UIEventSource<LayoutConfig>) {
+        this.features = new UIEventSource<{ feature: any; freshness: Date }[]>([])
+        const key = LocalStorageSaverActor.storageKey + layout.data.id
+        layout.addCallbackAndRun(_ => {
+            try {
+                const fromStorage = localStorage.getItem(key);
+                if (fromStorage == null) {
+                    return;
+                }
+                const loaded: { feature: any; freshness: Date | string }[] =
+                    JSON.parse(fromStorage);
+
+                const parsed: { feature: any; freshness: Date }[] = loaded.map(ff => ({
+                    feature: ff.feature,
+                    freshness: typeof ff.freshness == "string" ? new Date(ff.freshness) : ff.freshness
+                }))
+
+                this.features.setData(parsed);
+                console.log("Loaded ", loaded.length, " features from localstorage as cache")
+            } catch (e) {
+                console.log("Could not load features from localStorage:", e)
+                localStorage.removeItem(key)
+            }
+        })
+    }
+}