Add basic controller

src/stores/player/controllers/base.ts

@@ -1,5 +1,21 @@
 import { Controller } from "@/stores/player/controllers/types";
 
-function useBaseController(el: HTMLVideoElement): Controller {
+export function useBaseController(): Controller {
-  return {};
+  let el: HTMLVideoElement | undefined;
+
+  return {
+    registerVideoElement(video) {
+      el = video;
+    },
+    pause() {
+      el?.pause();
+    },
+    play() {
+      el?.play();
+    },
+    setVolume(target) {
+      if (!el) return;
+      el.volume = target;
+    },
+  };
 }

src/stores/player/controllers/types.ts

@@ -2,5 +2,5 @@ export interface Controller {
   pause(): void;
   play(): void;
   setVolume(target: number): void;
-  registerVideoElement(): void;
+  registerVideoElement(videoElement: HTMLVideoElement): void;
 }