Feat: Reworked ENTIRE Project for Readability

src/features/downloads/lib/downloadQueue.ts

@@ -0,0 +1,25 @@
+import type { DownloadQueueItem, ActiveDownload } from "@types/index";
+
+export function toActiveDownloads(queue: DownloadQueueItem[]): ActiveDownload[] {
+  return queue.map((item) => ({
+    chapterId: item.chapter.id,
+    mangaId:   item.chapter.mangaId,
+    progress:  item.progress,
+  }));
+}
+
+export function optimisticRemove(queue: DownloadQueueItem[], chapterId: number): DownloadQueueItem[] {
+  return queue.filter((i) => i.chapter.id !== chapterId);
+}
+
+export function optimisticToggle(state: string, wasRunning: boolean): string {
+  return wasRunning ? "STOPPED" : "STARTED";
+}
+
+export function isRunning(state: string | undefined): boolean {
+  return state === "STARTED";
+}
+
+export function pageProgress(progress: number, pageCount: number): { done: number; total: number } {
+  return { done: Math.round(progress * pageCount), total: pageCount };
+}