ui(admin): add "working" React admin ui

resources/scripts/state/admin/nodes.ts

@@ -0,0 +1,29 @@
+import type { Action } from 'easy-peasy';
+import { action } from 'easy-peasy';
+
+interface AdminNodeStore {
+    selectedNodes: number[];
+
+    setSelectedNodes: Action<AdminNodeStore, number[]>;
+    appendSelectedNode: Action<AdminNodeStore, number>;
+    removeSelectedNode: Action<AdminNodeStore, number>;
+}
+
+const nodes: AdminNodeStore = {
+    selectedNodes: [],
+
+    setSelectedNodes: action((state, payload) => {
+        state.selectedNodes = payload;
+    }),
+
+    appendSelectedNode: action((state, payload) => {
+        state.selectedNodes = state.selectedNodes.filter(id => id !== payload).concat(payload);
+    }),
+
+    removeSelectedNode: action((state, payload) => {
+        state.selectedNodes = state.selectedNodes.filter(id => id !== payload);
+    }),
+};
+
+export type { AdminNodeStore };
+export default nodes;