Refactoring: move all code files into a src directory

src/Logic/Web/IdbLocalStorage.ts

@@ -0,0 +1,49 @@
+import { UIEventSource } from "../UIEventSource"
+import * as idb from "idb-keyval"
+import { Utils } from "../../Utils"
+
+/**
+ * UIEventsource-wrapper around indexedDB key-value
+ */
+export class IdbLocalStorage {
+    private static readonly _sourceCache: Record<string, UIEventSource<any>> = {}
+
+    public static Get<T>(
+        key: string,
+        options?: { defaultValue?: T; whenLoaded?: (t: T | null) => void }
+    ): UIEventSource<T> {
+        if (IdbLocalStorage._sourceCache[key] !== undefined) {
+            return IdbLocalStorage._sourceCache[key]
+        }
+        const src = new UIEventSource<T>(options?.defaultValue, "idb-local-storage:" + key)
+        if (Utils.runningFromConsole) {
+            return src
+        }
+        src.addCallback((v) => idb.set(key, v))
+
+        idb.get(key)
+            .then((v) => {
+                src.setData(v ?? options?.defaultValue)
+                if (options?.whenLoaded !== undefined) {
+                    options?.whenLoaded(v)
+                }
+            })
+            .catch((err) => {
+                console.warn("Loading from local storage failed due to", err)
+                if (options?.whenLoaded !== undefined) {
+                    options?.whenLoaded(null)
+                }
+            })
+        IdbLocalStorage._sourceCache[key] = src
+        return src
+    }
+
+    public static SetDirectly(key: string, value: any): Promise<void> {
+        const copy = Utils.Clone(value)
+        return idb.set(key, copy)
+    }
+
+    static GetDirectly(key: string): Promise<any> {
+        return idb.get(key)
+    }
+}