Made the media player more responsive and accurate. (#95)

lib/shared/media.ts

@@ -0,0 +1,34 @@
+import { MprisPlayer } from "types/service/mpris";
+const mpris = await Service.import("mpris");
+
+export const getCurrentPlayer = (activePlayer: MprisPlayer = mpris.players[0]): MprisPlayer => {
+    const statusOrder = {
+        Playing: 1,
+        Paused: 2,
+        Stopped: 3,
+    };
+
+    if (mpris.players.length === 0) {
+        return mpris.players[0];
+    }
+
+    const isPlaying = mpris.players.some(
+        (p) => p["play-back-status"] === "Playing",
+    );
+
+    const playerStillExists = mpris.players.some(
+        (p) => activePlayer["bus-name"] === p["bus-name"],
+    );
+
+    const nextPlayerUp = mpris.players.sort(
+        (a, b) =>
+            statusOrder[a["play-back-status"]] -
+            statusOrder[b["play-back-status"]],
+    )[0];
+
+    if (isPlaying || !playerStillExists) {
+        return nextPlayerUp;
+    }
+
+    return activePlayer;
+}