feat: audio track store

apps/expo/src/stores/audio/index.ts

@@ -0,0 +1,20 @@
+import { create } from "zustand";
+import { immer } from "zustand/middleware/immer";
+
+import type { AudioTrack } from "../player/slices/interface";
+
+export interface AudioTrackStore {
+  selectedTrack: AudioTrack | null;
+  setSelectedAudioTrack(track: AudioTrack | null): void;
+}
+
+export const useAudioTrackStore = create(
+  immer<AudioTrackStore>((set) => ({
+    selectedTrack: null,
+    setSelectedAudioTrack: (track) => {
+      set((s) => {
+        s.selectedTrack = track;
+      });
+    },
+  })),
+);