first commit

common/resources/client/player/player-queue.ts

@@ -0,0 +1,43 @@
+import {MediaItem} from '@common/player/media-item';
+import {PlayerState} from '@common/player/state/player-state';
+
+export function playerQueue(state: () => PlayerState) {
+  const getPointer = (): number => {
+    if (state().cuedMedia) {
+      return (
+        state().shuffledQueue.findIndex(
+          item => item.id === state().cuedMedia?.id
+        ) || 0
+      );
+    }
+    return 0;
+  };
+  const getCurrent = (): MediaItem | undefined => {
+    return state().shuffledQueue[getPointer()];
+  };
+  const getFirst = (): MediaItem | undefined => {
+    return state().shuffledQueue[0];
+  };
+  const getLast = (): MediaItem | undefined => {
+    return state().shuffledQueue[state().shuffledQueue.length - 1];
+  };
+  const getNext = (): MediaItem | undefined => {
+    return state().shuffledQueue[getPointer() + 1];
+  };
+  const getPrevious = (): MediaItem | undefined => {
+    return state().shuffledQueue[getPointer() - 1];
+  };
+  const isLast = (): boolean => {
+    return getPointer() === state().originalQueue.length - 1;
+  };
+
+  return {
+    getPointer,
+    getCurrent,
+    getFirst,
+    getLast,
+    getNext,
+    getPrevious,
+    isLast,
+  };
+}