refactor: enhance download management by adding filename resolution and extraction handling in DownloadManage

src/locales/en/translation.json

@@ -404,6 +404,10 @@
     "completed": "Completed",
     "removed": "Not downloaded",
     "cancel": "Cancel",
+    "cancel_download": "Cancel download?",
+    "cancel_download_description": "Are you sure you want to cancel this download? All downloaded files will be deleted.",
+    "keep_downloading": "No, keep downloading",
+    "yes_cancel": "Yes, cancel",
     "filter": "Filter downloaded games",
     "remove": "Remove",
     "downloading_metadata": "Downloading metadata…",
@@ -594,7 +598,9 @@
     "notification_preview": "Achievement Notification Preview",
     "enable_friend_start_game_notifications": "When a friend starts playing a game",
     "autoplay_trailers_on_game_page": "Automatically start playing trailers on game page",
-    "hide_to_tray_on_game_start": "Hide Hydra to tray on game startup"
+    "hide_to_tray_on_game_start": "Hide Hydra to tray on game startup",
+    "downloads": "Downloads",
+    "use_native_http_downloader": "Use native HTTP downloader (experimental)"
   },
   "notifications": {
     "download_complete": "Download complete",

src/main/main.ts

@@ -2,7 +2,7 @@ import { downloadsSublevel } from "./level/sublevels/downloads";
 import { orderBy } from "lodash-es";
 import { Downloader } from "@shared";
 import { levelKeys, db } from "./level";
-import type { UserPreferences } from "@types";
+import type { Download, UserPreferences } from "@types";
 import {
   SystemPath,
   CommonRedistManager,
@@ -18,6 +18,7 @@ import {
   DeckyPlugin,
   DownloadSourcesChecker,
   WSClient,
+  logger,
 } from "@main/services";
 import { migrateDownloadSources } from "./helpers/migrate-download-sources";
 
@@ -33,7 +34,11 @@ export const loadState = async () => {
 
   await import("./events");
 
-  Aria2.spawn();
+  // Only spawn aria2 if user explicitly disabled native HTTP downloader
+  // Default is to use native HTTP downloader (aria2 is opt-in)
+  if (userPreferences?.useNativeHttpDownloader === false) {
+    Aria2.spawn();
+  }
 
   if (userPreferences?.realDebridApiToken) {
     RealDebridClient.authorize(userPreferences.realDebridApiToken);
@@ -71,18 +76,47 @@ export const loadState = async () => {
       return orderBy(games, "timestamp", "desc");
     });
 
-  downloads.forEach((download) => {
+  let interruptedDownload: Download | null = null;
+
+  for (const download of downloads) {
+    const downloadKey = levelKeys.game(download.shop, download.objectId);
+
+    // Reset extracting state
     if (download.extracting) {
-      downloadsSublevel.put(levelKeys.game(download.shop, download.objectId), {
+      await downloadsSublevel.put(downloadKey, {
         ...download,
         extracting: false,
       });
     }
-  });
 
-  const [nextItemOnQueue] = downloads.filter((game) => game.queued);
+    // Find interrupted active download (download that was running when app closed)
+    // Mark it as paused but remember it for auto-resume
+    if (download.status === "active" && !interruptedDownload) {
+      interruptedDownload = download;
+      await downloadsSublevel.put(downloadKey, {
+        ...download,
+        status: "paused",
+      });
+    } else if (download.status === "active") {
+      // Mark other active downloads as paused
+      await downloadsSublevel.put(downloadKey, {
+        ...download,
+        status: "paused",
+      });
+    }
+  }
 
-  const downloadsToSeed = downloads.filter(
+  // Re-fetch downloads after status updates
+  const updatedDownloads = await downloadsSublevel
+    .values()
+    .all()
+    .then((games) => orderBy(games, "timestamp", "desc"));
+
+  // Prioritize interrupted download, then queued downloads
+  const downloadToResume =
+    interruptedDownload ?? updatedDownloads.find((game) => game.queued);
+
+  const downloadsToSeed = updatedDownloads.filter(
     (game) =>
       game.shouldSeed &&
       game.downloader === Downloader.Torrent &&
@@ -90,7 +124,23 @@ export const loadState = async () => {
       game.uri !== null
   );
 
-  await DownloadManager.startRPC(nextItemOnQueue, downloadsToSeed);
+  // For torrents or if JS downloader is disabled, use Python RPC
+  const isTorrent = downloadToResume?.downloader === Downloader.Torrent;
+  // Default to true - native HTTP downloader is enabled by default
+  const useJsDownloader =
+    (userPreferences?.useNativeHttpDownloader ?? true) && !isTorrent;
+
+  if (useJsDownloader && downloadToResume) {
+    // Start Python RPC for seeding only, then resume HTTP download with JS
+    await DownloadManager.startRPC(undefined, downloadsToSeed);
+    await DownloadManager.startDownload(downloadToResume).catch((err) => {
+      // If resume fails, just log it - user can manually retry
+      logger.error("Failed to auto-resume download:", err);
+    });
+  } else {
+    // Use Python RPC for everything (torrent or fallback)
+    await DownloadManager.startRPC(downloadToResume, downloadsToSeed);
+  }
 
   startMainLoop();
 

src/main/services/download/download-manager.ts

@@ -8,7 +8,6 @@ import {
   DatanodesApi,
   MediafireApi,
   PixelDrainApi,
-  VikingFileApi,
 } from "../hosters";
 import { PythonRPC } from "../python-rpc";
 import {
@@ -18,17 +17,25 @@ import {
 } from "./types";
 import { calculateETA, getDirSize } from "./helpers";
 import { RealDebridClient } from "./real-debrid";
-import path from "path";
+import path from "node:path";
 import { logger } from "../logger";
 import { db, downloadsSublevel, gamesSublevel, levelKeys } from "@main/level";
 import { sortBy } from "lodash-es";
 import { TorBoxClient } from "./torbox";
 import { GameFilesManager } from "../game-files-manager";
 import { HydraDebridClient } from "./hydra-debrid";
-import { BuzzheavierApi, FuckingFastApi } from "@main/services/hosters";
+import {
+  BuzzheavierApi,
+  FuckingFastApi,
+  VikingFileApi,
+} from "@main/services/hosters";
+import { JsHttpDownloader } from "./js-http-downloader";
 
 export class DownloadManager {
   private static downloadingGameId: string | null = null;
+  private static jsDownloader: JsHttpDownloader | null = null;
+  private static usingJsDownloader = false;
+  private static isPreparingDownload = false;
 
   private static extractFilename(
     url: string,
@@ -52,7 +59,7 @@ export class DownloadManager {
       const urlObj = new URL(url);
       const pathname = urlObj.pathname;
       const pathParts = pathname.split("/");
-      const filename = pathParts[pathParts.length - 1];
+      const filename = pathParts.at(-1);
 
       if (filename?.includes(".") && filename.length > 0) {
         return decodeURIComponent(filename);
@@ -68,6 +75,34 @@ export class DownloadManager {
     return filename.replaceAll(/[<>:"/\\|?*]/g, "_");
   }
 
+  private static resolveFilename(
+    resumingFilename: string | undefined,
+    originalUrl: string,
+    downloadUrl: string
+  ): string | undefined {
+    if (resumingFilename) return resumingFilename;
+
+    const extracted =
+      this.extractFilename(originalUrl, downloadUrl) ||
+      this.extractFilename(downloadUrl);
+
+    return extracted ? this.sanitizeFilename(extracted) : undefined;
+  }
+
+  private static buildDownloadOptions(
+    url: string,
+    savePath: string,
+    filename: string | undefined,
+    headers?: Record<string, string>
+  ) {
+    return {
+      url,
+      savePath,
+      filename,
+      headers,
+    };
+  }
+
   private static createDownloadPayload(
     directUrl: string,
     originalUrl: string,
@@ -99,6 +134,19 @@ export class DownloadManager {
     };
   }
 
+  private static async shouldUseJsDownloader(): Promise<boolean> {
+    const userPreferences = await db.get<string, UserPreferences | null>(
+      levelKeys.userPreferences,
+      { valueEncoding: "json" }
+    );
+    // Default to true - native HTTP downloader is enabled by default (opt-out)
+    return userPreferences?.useNativeHttpDownloader ?? true;
+  }
+
+  private static isHttpDownloader(downloader: Downloader): boolean {
+    return downloader !== Downloader.Torrent;
+  }
+
   public static async startRPC(
     download?: Download,
     downloadsToSeed?: Download[]
@@ -123,7 +171,87 @@ export class DownloadManager {
     }
   }
 
-  private static async getDownloadStatus() {
+  private static async getDownloadStatusFromJs(): Promise<DownloadProgress | null> {
+    if (!this.downloadingGameId) return null;
+
+    const downloadId = this.downloadingGameId;
+
+    // Return a "preparing" status while fetching download options
+    if (this.isPreparingDownload) {
+      try {
+        const download = await downloadsSublevel.get(downloadId);
+        if (!download) return null;
+
+        return {
+          numPeers: 0,
+          numSeeds: 0,
+          downloadSpeed: 0,
+          timeRemaining: -1,
+          isDownloadingMetadata: true, // Use this to indicate "preparing"
+          isCheckingFiles: false,
+          progress: 0,
+          gameId: downloadId,
+          download,
+        };
+      } catch {
+        return null;
+      }
+    }
+
+    if (!this.jsDownloader) return null;
+
+    const status = this.jsDownloader.getDownloadStatus();
+    if (!status) return null;
+
+    try {
+      const download = await downloadsSublevel.get(downloadId);
+      if (!download) return null;
+
+      const { progress, downloadSpeed, bytesDownloaded, fileSize, folderName } =
+        status;
+
+      // Only update fileSize in database if we actually know it (> 0)
+      // Otherwise keep the existing value to avoid showing "0 B"
+      const effectiveFileSize = fileSize > 0 ? fileSize : download.fileSize;
+
+      const updatedDownload = {
+        ...download,
+        bytesDownloaded,
+        fileSize: effectiveFileSize,
+        progress,
+        folderName,
+        status:
+          status.status === "complete"
+            ? ("complete" as const)
+            : ("active" as const),
+      };
+
+      if (status.status === "active" || status.status === "complete") {
+        await downloadsSublevel.put(downloadId, updatedDownload);
+      }
+
+      return {
+        numPeers: 0,
+        numSeeds: 0,
+        downloadSpeed,
+        timeRemaining: calculateETA(
+          effectiveFileSize ?? 0,
+          bytesDownloaded,
+          downloadSpeed
+        ),
+        isDownloadingMetadata: false,
+        isCheckingFiles: false,
+        progress,
+        gameId: downloadId,
+        download: updatedDownload,
+      };
+    } catch (err) {
+      logger.error("[DownloadManager] Error getting JS download status:", err);
+      return null;
+    }
+  }
+
+  private static async getDownloadStatusFromRpc(): Promise<DownloadProgress | null> {
     const response = await PythonRPC.rpc.get<LibtorrentPayload | null>(
       "/status"
     );
@@ -151,28 +279,14 @@ export class DownloadManager {
       if (!isDownloadingMetadata && !isCheckingFiles) {
         if (!download) return null;
 
-        const updatedDownload = {
+        await downloadsSublevel.put(downloadId, {
           ...download,
           bytesDownloaded,
           fileSize,
           progress,
           folderName,
-          status: "active" as const,
-        };
-
-        await downloadsSublevel.put(downloadId, updatedDownload);
-
-        return {
-          numPeers,
-          numSeeds,
-          downloadSpeed,
-          timeRemaining: calculateETA(fileSize, bytesDownloaded, downloadSpeed),
-          isDownloadingMetadata,
-          isCheckingFiles,
-          progress,
-          gameId: downloadId,
-          download: updatedDownload,
-        } as DownloadProgress;
+          status: "active",
+        });
       }
 
       return {
@@ -186,105 +300,141 @@ export class DownloadManager {
         gameId: downloadId,
         download,
       } as DownloadProgress;
-    } catch (err) {
+    } catch {
       return null;
     }
   }
 
+  private static async getDownloadStatus(): Promise<DownloadProgress | null> {
+    if (this.usingJsDownloader) {
+      return this.getDownloadStatusFromJs();
+    }
+    return this.getDownloadStatusFromRpc();
+  }
+
   public static async watchDownloads() {
     const status = await this.getDownloadStatus();
+    if (!status) return;
 
-    if (status) {
-      const { gameId, progress } = status;
+    const { gameId, progress } = status;
+    const [download, game] = await Promise.all([
+      downloadsSublevel.get(gameId),
+      gamesSublevel.get(gameId),
+    ]);
 
-      const [download, game] = await Promise.all([
-        downloadsSublevel.get(gameId),
-        gamesSublevel.get(gameId),
-      ]);
+    if (!download || !game) return;
 
-      if (!download || !game) return;
+    this.sendProgressUpdate(progress, status, game);
 
-      const userPreferences = await db.get<string, UserPreferences | null>(
-        levelKeys.userPreferences,
-        { valueEncoding: "json" }
+    if (progress === 1) {
+      await this.handleDownloadCompletion(download, game, gameId);
+    }
+  }
+
+  private static sendProgressUpdate(
+    progress: number,
+    status: DownloadProgress,
+    game: any
+  ) {
+    if (WindowManager.mainWindow) {
+      WindowManager.mainWindow.setProgressBar(progress === 1 ? -1 : progress);
+      WindowManager.mainWindow.webContents.send(
+        "on-download-progress",
+        structuredClone({ ...status, game })
+      );
+    }
+  }
+
+  private static async handleDownloadCompletion(
+    download: Download,
+    game: any,
+    gameId: string
+  ) {
+    publishDownloadCompleteNotification(game);
+
+    const userPreferences = await db.get<string, UserPreferences | null>(
+      levelKeys.userPreferences,
+      { valueEncoding: "json" }
+    );
+
+    await this.updateDownloadStatus(
+      download,
+      gameId,
+      userPreferences?.seedAfterDownloadComplete
+    );
+
+    if (download.automaticallyExtract) {
+      this.handleExtraction(download, game);
+    }
+
+    await this.processNextQueuedDownload();
+  }
+
+  private static async updateDownloadStatus(
+    download: Download,
+    gameId: string,
+    shouldSeed?: boolean
+  ) {
+    const shouldExtract = download.automaticallyExtract;
+
+    if (shouldSeed && download.downloader === Downloader.Torrent) {
+      await downloadsSublevel.put(gameId, {
+        ...download,
+        status: "seeding",
+        shouldSeed: true,
+        queued: false,
+        extracting: shouldExtract,
+      });
+    } else {
+      await downloadsSublevel.put(gameId, {
+        ...download,
+        status: "complete",
+        shouldSeed: false,
+        queued: false,
+        extracting: shouldExtract,
+      });
+      this.cancelDownload(gameId);
+    }
+  }
+
+  private static handleExtraction(download: Download, game: any) {
+    const gameFilesManager = new GameFilesManager(game.shop, game.objectId);
+
+    if (
+      FILE_EXTENSIONS_TO_EXTRACT.some((ext) =>
+        download.folderName?.endsWith(ext)
+      )
+    ) {
+      gameFilesManager.extractDownloadedFile();
+    } else if (download.folderName) {
+      gameFilesManager
+        .extractFilesInDirectory(
+          path.join(download.downloadPath, download.folderName)
+        )
+        .then(() => gameFilesManager.setExtractionComplete());
+    }
+  }
+
+  private static async processNextQueuedDownload() {
+    const downloads = await downloadsSublevel
+      .values()
+      .all()
+      .then((games) =>
+        sortBy(
+          games.filter((game) => game.status === "paused" && game.queued),
+          "timestamp",
+          "DESC"
+        )
       );
 
-      if (WindowManager.mainWindow && download) {
-        WindowManager.mainWindow.setProgressBar(progress === 1 ? -1 : progress);
-        WindowManager.mainWindow.webContents.send(
-          "on-download-progress",
-          JSON.parse(JSON.stringify({ ...status, game }))
-        );
-      }
+    const [nextItemOnQueue] = downloads;
 
-      const shouldExtract = download.automaticallyExtract;
-
-      if (progress === 1 && download) {
-        publishDownloadCompleteNotification(game);
-
-        if (
-          userPreferences?.seedAfterDownloadComplete &&
-          download.downloader === Downloader.Torrent
-        ) {
-          await downloadsSublevel.put(gameId, {
-            ...download,
-            status: "seeding",
-            shouldSeed: true,
-            queued: false,
-            extracting: shouldExtract,
-          });
-        } else {
-          await downloadsSublevel.put(gameId, {
-            ...download,
-            status: "complete",
-            shouldSeed: false,
-            queued: false,
-            extracting: shouldExtract,
-          });
-
-          this.cancelDownload(gameId);
-        }
-
-        if (shouldExtract) {
-          const gameFilesManager = new GameFilesManager(
-            game.shop,
-            game.objectId
-          );
-
-          if (
-            FILE_EXTENSIONS_TO_EXTRACT.some((ext) =>
-              download.folderName?.endsWith(ext)
-            )
-          ) {
-            gameFilesManager.extractDownloadedFile();
-          } else if (download.folderName) {
-            gameFilesManager
-              .extractFilesInDirectory(
-                path.join(download.downloadPath, download.folderName)
-              )
-              .then(() => gameFilesManager.setExtractionComplete());
-          }
-        }
-
-        const downloads = await downloadsSublevel
-          .values()
-          .all()
-          .then((games) =>
-            sortBy(
-              games.filter((game) => game.status === "paused" && game.queued),
-              "timestamp",
-              "DESC"
-            )
-          );
-
-        const [nextItemOnQueue] = downloads;
-
-        if (nextItemOnQueue) {
-          this.resumeDownload(nextItemOnQueue);
-        } else {
-          this.downloadingGameId = null;
-        }
-      }
+    if (nextItemOnQueue) {
+      this.resumeDownload(nextItemOnQueue);
+    } else {
+      this.downloadingGameId = null;
+      this.usingJsDownloader = false;
+      this.jsDownloader = null;
     }
   }
 
@@ -324,12 +474,17 @@ export class DownloadManager {
   }
 
   static async pauseDownload(downloadKey = this.downloadingGameId) {
-    await PythonRPC.rpc
-      .post("/action", {
-        action: "pause",
-        game_id: downloadKey,
-      } as PauseDownloadPayload)
-      .catch(() => {});
+    if (this.usingJsDownloader && this.jsDownloader) {
+      logger.log("[DownloadManager] Pausing JS download");
+      this.jsDownloader.pauseDownload();
+    } else {
+      await PythonRPC.rpc
+        .post("/action", {
+          action: "pause",
+          game_id: downloadKey,
+        } as PauseDownloadPayload)
+        .catch(() => {});
+    }
 
     if (downloadKey === this.downloadingGameId) {
       WindowManager.mainWindow?.setProgressBar(-1);
@@ -342,14 +497,23 @@ export class DownloadManager {
   }
 
   static async cancelDownload(downloadKey = this.downloadingGameId) {
-    await PythonRPC.rpc
-      .post("/action", { action: "cancel", game_id: downloadKey })
-      .catch((err) => logger.error("Failed to cancel game download", err));
+    if (this.usingJsDownloader && this.jsDownloader) {
+      logger.log("[DownloadManager] Cancelling JS download");
+      this.jsDownloader.cancelDownload();
+      this.jsDownloader = null;
+      this.usingJsDownloader = false;
+    } else if (!this.isPreparingDownload) {
+      await PythonRPC.rpc
+        .post("/action", { action: "cancel", game_id: downloadKey })
+        .catch((err) => logger.error("Failed to cancel game download", err));
+    }
 
     if (downloadKey === this.downloadingGameId) {
       WindowManager.mainWindow?.setProgressBar(-1);
       WindowManager.mainWindow?.webContents.send("on-download-progress", null);
       this.downloadingGameId = null;
+      this.isPreparingDownload = false;
+      this.usingJsDownloader = false;
     }
   }
 
@@ -369,6 +533,241 @@ export class DownloadManager {
     });
   }
 
+  private static async getJsDownloadOptions(download: Download): Promise<{
+    url: string;
+    savePath: string;
+    filename?: string;
+    headers?: Record<string, string>;
+  } | null> {
+    const resumingFilename = download.folderName || undefined;
+
+    switch (download.downloader) {
+      case Downloader.Gofile:
+        return this.getGofileDownloadOptions(download, resumingFilename);
+      case Downloader.PixelDrain:
+        return this.getPixelDrainDownloadOptions(download, resumingFilename);
+      case Downloader.Qiwi:
+        return this.getQiwiDownloadOptions(download, resumingFilename);
+      case Downloader.Datanodes:
+        return this.getDatanodesDownloadOptions(download, resumingFilename);
+      case Downloader.Buzzheavier:
+        return this.getBuzzheavierDownloadOptions(download, resumingFilename);
+      case Downloader.FuckingFast:
+        return this.getFuckingFastDownloadOptions(download, resumingFilename);
+      case Downloader.Mediafire:
+        return this.getMediafireDownloadOptions(download, resumingFilename);
+      case Downloader.RealDebrid:
+        return this.getRealDebridDownloadOptions(download, resumingFilename);
+      case Downloader.TorBox:
+        return this.getTorBoxDownloadOptions(download, resumingFilename);
+      case Downloader.Hydra:
+        return this.getHydraDownloadOptions(download, resumingFilename);
+      case Downloader.VikingFile:
+        return this.getVikingFileDownloadOptions(download, resumingFilename);
+      default:
+        return null;
+    }
+  }
+
+  private static async getGofileDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    const id = download.uri.split("/").pop();
+    const token = await GofileApi.authorize();
+    const downloadLink = await GofileApi.getDownloadLink(id!);
+    await GofileApi.checkDownloadUrl(downloadLink);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      downloadLink
+    );
+    return this.buildDownloadOptions(
+      downloadLink,
+      download.downloadPath,
+      filename,
+      { Cookie: `accountToken=${token}` }
+    );
+  }
+
+  private static async getPixelDrainDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    const id = download.uri.split("/").pop();
+    const downloadUrl = await PixelDrainApi.getDownloadUrl(id!);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      downloadUrl
+    );
+    return this.buildDownloadOptions(
+      downloadUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
+  private static async getQiwiDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    const downloadUrl = await QiwiApi.getDownloadUrl(download.uri);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      downloadUrl
+    );
+    return this.buildDownloadOptions(
+      downloadUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
+  private static async getDatanodesDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    const downloadUrl = await DatanodesApi.getDownloadUrl(download.uri);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      downloadUrl
+    );
+    return this.buildDownloadOptions(
+      downloadUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
+  private static async getBuzzheavierDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    logger.log(
+      `[DownloadManager] Processing Buzzheavier download for URI: ${download.uri}`
+    );
+    const directUrl = await BuzzheavierApi.getDirectLink(download.uri);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      directUrl
+    );
+    return this.buildDownloadOptions(
+      directUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
+  private static async getFuckingFastDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    logger.log(
+      `[DownloadManager] Processing FuckingFast download for URI: ${download.uri}`
+    );
+    const directUrl = await FuckingFastApi.getDirectLink(download.uri);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      directUrl
+    );
+    return this.buildDownloadOptions(
+      directUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
+  private static async getMediafireDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    const downloadUrl = await MediafireApi.getDownloadUrl(download.uri);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      downloadUrl
+    );
+    return this.buildDownloadOptions(
+      downloadUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
+  private static async getRealDebridDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    const downloadUrl = await RealDebridClient.getDownloadUrl(download.uri);
+    if (!downloadUrl) throw new Error(DownloadError.NotCachedOnRealDebrid);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      downloadUrl
+    );
+    return this.buildDownloadOptions(
+      downloadUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
+  private static async getTorBoxDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    const { name, url } = await TorBoxClient.getDownloadInfo(download.uri);
+    if (!url) return null;
+    return this.buildDownloadOptions(
+      url,
+      download.downloadPath,
+      resumingFilename || name
+    );
+  }
+
+  private static async getHydraDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    const downloadUrl = await HydraDebridClient.getDownloadUrl(download.uri);
+    if (!downloadUrl) throw new Error(DownloadError.NotCachedOnHydra);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      downloadUrl
+    );
+    return this.buildDownloadOptions(
+      downloadUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
+  private static async getVikingFileDownloadOptions(
+    download: Download,
+    resumingFilename?: string
+  ) {
+    logger.log(
+      `[DownloadManager] Processing VikingFile download for URI: ${download.uri}`
+    );
+    const downloadUrl = await VikingFileApi.getDownloadUrl(download.uri);
+    const filename = this.resolveFilename(
+      resumingFilename,
+      download.uri,
+      downloadUrl
+    );
+    return this.buildDownloadOptions(
+      downloadUrl,
+      download.downloadPath,
+      filename
+    );
+  }
+
   private static async getDownloadPayload(download: Download) {
     const downloadId = levelKeys.game(download.shop, download.objectId);
 
@@ -518,31 +917,62 @@ export class DownloadManager {
         logger.log(
           `[DownloadManager] Processing VikingFile download for URI: ${download.uri}`
         );
-        try {
-          const downloadUrl = await VikingFileApi.getDownloadUrl(download.uri);
-          logger.log(`[DownloadManager] VikingFile direct URL obtained`);
-          return {
-            action: "start",
-            game_id: downloadId,
-            url: downloadUrl,
-            save_path: download.downloadPath,
-            header:
-              "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36",
-          };
-        } catch (error) {
-          logger.error(
-            `[DownloadManager] Error processing VikingFile download:`,
-            error
-          );
-          throw error;
-        }
+        const downloadUrl = await VikingFileApi.getDownloadUrl(download.uri);
+        return this.createDownloadPayload(
+          downloadUrl,
+          download.uri,
+          downloadId,
+          download.downloadPath
+        );
       }
+      default:
+        return undefined;
     }
   }
 
   static async startDownload(download: Download) {
-    const payload = await this.getDownloadPayload(download);
-    await PythonRPC.rpc.post("/action", payload);
-    this.downloadingGameId = levelKeys.game(download.shop, download.objectId);
+    const useJsDownloader = await this.shouldUseJsDownloader();
+    const isHttp = this.isHttpDownloader(download.downloader);
+    const downloadId = levelKeys.game(download.shop, download.objectId);
+
+    if (useJsDownloader && isHttp) {
+      logger.log("[DownloadManager] Using JS HTTP downloader");
+
+      // Set preparing state immediately so UI knows download is starting
+      this.downloadingGameId = downloadId;
+      this.isPreparingDownload = true;
+      this.usingJsDownloader = true;
+
+      try {
+        const options = await this.getJsDownloadOptions(download);
+
+        if (!options) {
+          this.isPreparingDownload = false;
+          this.usingJsDownloader = false;
+          this.downloadingGameId = null;
+          throw new Error("Failed to get download options for JS downloader");
+        }
+
+        this.jsDownloader = new JsHttpDownloader();
+        this.isPreparingDownload = false;
+
+        this.jsDownloader.startDownload(options).catch((err) => {
+          logger.error("[DownloadManager] JS download error:", err);
+          this.usingJsDownloader = false;
+          this.jsDownloader = null;
+        });
+      } catch (err) {
+        this.isPreparingDownload = false;
+        this.usingJsDownloader = false;
+        this.downloadingGameId = null;
+        throw err;
+      }
+    } else {
+      logger.log("[DownloadManager] Using Python RPC downloader");
+      const payload = await this.getDownloadPayload(download);
+      await PythonRPC.rpc.post("/action", payload);
+      this.downloadingGameId = downloadId;
+      this.usingJsDownloader = false;
+    }
   }
 }

src/main/services/download/index.ts

@@ -1,3 +1,5 @@
 export * from "./download-manager";
 export * from "./real-debrid";
 export * from "./torbox";
+export * from "./js-http-downloader";
+export * from "./js-multi-link-downloader";

src/main/services/download/js-http-downloader.ts

@@ -0,0 +1,380 @@
+import fs from "node:fs";
+import path from "node:path";
+import { Readable } from "node:stream";
+import { pipeline } from "node:stream/promises";
+import { logger } from "../logger";
+
+export interface JsHttpDownloaderStatus {
+  folderName: string;
+  fileSize: number;
+  progress: number;
+  downloadSpeed: number;
+  numPeers: number;
+  numSeeds: number;
+  status: "active" | "paused" | "complete" | "error";
+  bytesDownloaded: number;
+}
+
+export interface JsHttpDownloaderOptions {
+  url: string;
+  savePath: string;
+  filename?: string;
+  headers?: Record<string, string>;
+}
+
+export class JsHttpDownloader {
+  private abortController: AbortController | null = null;
+  private writeStream: fs.WriteStream | null = null;
+  private currentOptions: JsHttpDownloaderOptions | null = null;
+
+  private bytesDownloaded = 0;
+  private fileSize = 0;
+  private downloadSpeed = 0;
+  private status: "active" | "paused" | "complete" | "error" = "paused";
+  private folderName = "";
+  private lastSpeedUpdate = Date.now();
+  private bytesAtLastSpeedUpdate = 0;
+  private isDownloading = false;
+
+  async startDownload(options: JsHttpDownloaderOptions): Promise<void> {
+    if (this.isDownloading) {
+      logger.log(
+        "[JsHttpDownloader] Download already in progress, resuming..."
+      );
+      return this.resumeDownload();
+    }
+
+    this.currentOptions = options;
+    this.abortController = new AbortController();
+    this.status = "active";
+    this.isDownloading = true;
+
+    const { url, savePath, filename, headers = {} } = options;
+    const { filePath, startByte, usedFallback } = this.prepareDownloadPath(
+      savePath,
+      filename,
+      url
+    );
+    const requestHeaders = this.buildRequestHeaders(headers, startByte);
+
+    try {
+      await this.executeDownload(
+        url,
+        requestHeaders,
+        filePath,
+        startByte,
+        savePath,
+        usedFallback
+      );
+    } catch (err) {
+      this.handleDownloadError(err as Error);
+    } finally {
+      this.isDownloading = false;
+      this.cleanup();
+    }
+  }
+
+  private prepareDownloadPath(
+    savePath: string,
+    filename: string | undefined,
+    url: string
+  ): { filePath: string; startByte: number; usedFallback: boolean } {
+    const extractedFilename = filename || this.extractFilename(url);
+    const usedFallback = !extractedFilename;
+    const resolvedFilename = extractedFilename || "download";
+    this.folderName = resolvedFilename;
+    const filePath = path.join(savePath, resolvedFilename);
+
+    if (!fs.existsSync(savePath)) {
+      fs.mkdirSync(savePath, { recursive: true });
+    }
+
+    let startByte = 0;
+    if (fs.existsSync(filePath)) {
+      const stats = fs.statSync(filePath);
+      startByte = stats.size;
+      this.bytesDownloaded = startByte;
+      logger.log(`[JsHttpDownloader] Resuming download from byte ${startByte}`);
+    }
+
+    this.resetSpeedTracking();
+    return { filePath, startByte, usedFallback };
+  }
+
+  private buildRequestHeaders(
+    headers: Record<string, string>,
+    startByte: number
+  ): Record<string, string> {
+    const requestHeaders: Record<string, string> = { ...headers };
+    if (startByte > 0) {
+      requestHeaders["Range"] = `bytes=${startByte}-`;
+    }
+    return requestHeaders;
+  }
+
+  private resetSpeedTracking(): void {
+    this.lastSpeedUpdate = Date.now();
+    this.bytesAtLastSpeedUpdate = this.bytesDownloaded;
+    this.downloadSpeed = 0;
+  }
+
+  private parseFileSize(response: Response, startByte: number): void {
+    const contentRange = response.headers.get("content-range");
+    if (contentRange) {
+      const match = /bytes \d+-\d+\/(\d+)/.exec(contentRange);
+      if (match) {
+        this.fileSize = Number.parseInt(match[1], 10);
+      }
+      return;
+    }
+
+    const contentLength = response.headers.get("content-length");
+    if (contentLength) {
+      this.fileSize = startByte + Number.parseInt(contentLength, 10);
+    }
+  }
+
+  private async executeDownload(
+    url: string,
+    requestHeaders: Record<string, string>,
+    filePath: string,
+    startByte: number,
+    savePath: string,
+    usedFallback: boolean
+  ): Promise<void> {
+    const response = await fetch(url, {
+      headers: requestHeaders,
+      signal: this.abortController?.signal,
+    });
+
+    // Handle 416 Range Not Satisfiable - existing file is larger than server file
+    // This happens when downloading same game from different source
+    if (response.status === 416 && startByte > 0) {
+      logger.log(
+        "[JsHttpDownloader] Range not satisfiable, deleting existing file and restarting"
+      );
+      if (fs.existsSync(filePath)) {
+        fs.unlinkSync(filePath);
+      }
+      this.bytesDownloaded = 0;
+      this.resetSpeedTracking();
+
+      // Retry without Range header
+      const headersWithoutRange = { ...requestHeaders };
+      delete headersWithoutRange["Range"];
+
+      return this.executeDownload(
+        url,
+        headersWithoutRange,
+        filePath,
+        0,
+        savePath,
+        usedFallback
+      );
+    }
+
+    if (!response.ok && response.status !== 206) {
+      throw new Error(`HTTP error! status: ${response.status}`);
+    }
+
+    this.parseFileSize(response, startByte);
+
+    // If we used "download" fallback, try to get filename from Content-Disposition
+    let actualFilePath = filePath;
+    if (usedFallback && startByte === 0) {
+      const headerFilename = this.parseContentDisposition(response);
+      if (headerFilename) {
+        actualFilePath = path.join(savePath, headerFilename);
+        this.folderName = headerFilename;
+        logger.log(
+          `[JsHttpDownloader] Using filename from Content-Disposition: ${headerFilename}`
+        );
+      }
+    }
+
+    if (!response.body) {
+      throw new Error("Response body is null");
+    }
+
+    const flags = startByte > 0 ? "a" : "w";
+    this.writeStream = fs.createWriteStream(actualFilePath, { flags });
+
+    const readableStream = this.createReadableStream(response.body.getReader());
+    await pipeline(readableStream, this.writeStream);
+
+    this.status = "complete";
+    this.downloadSpeed = 0;
+    logger.log("[JsHttpDownloader] Download complete");
+  }
+
+  private parseContentDisposition(response: Response): string | undefined {
+    const header = response.headers.get("content-disposition");
+    if (!header) return undefined;
+
+    // Try to extract filename from Content-Disposition header
+    // Formats: attachment; filename="file.zip" or attachment; filename=file.zip
+    const filenameMatch = /filename\*?=['"]?(?:UTF-8'')?([^"';\n]+)['"]?/i.exec(
+      header
+    );
+    if (filenameMatch?.[1]) {
+      try {
+        return decodeURIComponent(filenameMatch[1].trim());
+      } catch {
+        return filenameMatch[1].trim();
+      }
+    }
+    return undefined;
+  }
+
+  private createReadableStream(
+    reader: ReadableStreamDefaultReader<Uint8Array>
+  ): Readable {
+    const onChunk = (length: number) => {
+      this.bytesDownloaded += length;
+      this.updateSpeed();
+    };
+
+    return new Readable({
+      read() {
+        reader
+          .read()
+          .then(({ done, value }) => {
+            if (done) {
+              this.push(null);
+              return;
+            }
+            onChunk(value.length);
+            this.push(Buffer.from(value));
+          })
+          .catch((err: Error) => {
+            if (err.name === "AbortError") {
+              this.push(null);
+            } else {
+              this.destroy(err);
+            }
+          });
+      },
+    });
+  }
+
+  private handleDownloadError(err: Error): void {
+    // Handle abort/cancellation errors - these are expected when user pauses/cancels
+    if (
+      err.name === "AbortError" ||
+      (err as NodeJS.ErrnoException).code === "ERR_STREAM_PREMATURE_CLOSE"
+    ) {
+      logger.log("[JsHttpDownloader] Download aborted");
+      this.status = "paused";
+    } else {
+      logger.error("[JsHttpDownloader] Download error:", err);
+      this.status = "error";
+      throw err;
+    }
+  }
+
+  private async resumeDownload(): Promise<void> {
+    if (!this.currentOptions) {
+      throw new Error("No download options available for resume");
+    }
+    this.isDownloading = false;
+    await this.startDownload(this.currentOptions);
+  }
+
+  pauseDownload(): void {
+    if (this.abortController) {
+      logger.log("[JsHttpDownloader] Pausing download");
+      this.abortController.abort();
+      this.status = "paused";
+      this.downloadSpeed = 0;
+    }
+  }
+
+  cancelDownload(deleteFile = true): void {
+    if (this.abortController) {
+      logger.log("[JsHttpDownloader] Cancelling download");
+      this.abortController.abort();
+    }
+
+    this.cleanup();
+
+    if (deleteFile && this.currentOptions && this.status !== "complete") {
+      const filePath = path.join(this.currentOptions.savePath, this.folderName);
+      if (fs.existsSync(filePath)) {
+        try {
+          fs.unlinkSync(filePath);
+          logger.log("[JsHttpDownloader] Deleted partial file");
+        } catch (err) {
+          logger.error(
+            "[JsHttpDownloader] Failed to delete partial file:",
+            err
+          );
+        }
+      }
+    }
+
+    this.reset();
+  }
+
+  getDownloadStatus(): JsHttpDownloaderStatus | null {
+    if (!this.currentOptions && this.status !== "active") {
+      return null;
+    }
+
+    return {
+      folderName: this.folderName,
+      fileSize: this.fileSize,
+      progress: this.fileSize > 0 ? this.bytesDownloaded / this.fileSize : 0,
+      downloadSpeed: this.downloadSpeed,
+      numPeers: 0,
+      numSeeds: 0,
+      status: this.status,
+      bytesDownloaded: this.bytesDownloaded,
+    };
+  }
+
+  private updateSpeed(): void {
+    const now = Date.now();
+    const elapsed = (now - this.lastSpeedUpdate) / 1000;
+
+    if (elapsed >= 1) {
+      const bytesDelta = this.bytesDownloaded - this.bytesAtLastSpeedUpdate;
+      this.downloadSpeed = bytesDelta / elapsed;
+      this.lastSpeedUpdate = now;
+      this.bytesAtLastSpeedUpdate = this.bytesDownloaded;
+    }
+  }
+
+  private extractFilename(url: string): string | undefined {
+    try {
+      const urlObj = new URL(url);
+      const pathname = urlObj.pathname;
+      const pathParts = pathname.split("/");
+      const filename = pathParts.at(-1);
+
+      if (filename?.includes(".") && filename.length > 0) {
+        return decodeURIComponent(filename);
+      }
+    } catch {
+      // Invalid URL
+    }
+    return undefined;
+  }
+
+  private cleanup(): void {
+    if (this.writeStream) {
+      this.writeStream.close();
+      this.writeStream = null;
+    }
+    this.abortController = null;
+  }
+
+  private reset(): void {
+    this.currentOptions = null;
+    this.bytesDownloaded = 0;
+    this.fileSize = 0;
+    this.downloadSpeed = 0;
+    this.status = "paused";
+    this.folderName = "";
+    this.isDownloading = false;
+  }
+}

src/main/services/download/js-multi-link-downloader.ts

@@ -0,0 +1,201 @@
+import { JsHttpDownloader, JsHttpDownloaderStatus } from "./js-http-downloader";
+import { logger } from "../logger";
+
+export interface JsMultiLinkDownloaderOptions {
+  urls: string[];
+  savePath: string;
+  headers?: Record<string, string>;
+  totalSize?: number;
+}
+
+interface CompletedDownload {
+  name: string;
+  size: number;
+}
+
+export class JsMultiLinkDownloader {
+  private downloader: JsHttpDownloader | null = null;
+  private currentOptions: JsMultiLinkDownloaderOptions | null = null;
+  private currentUrlIndex = 0;
+  private completedDownloads: CompletedDownload[] = [];
+  private totalSize: number | null = null;
+  private isDownloading = false;
+  private isPaused = false;
+
+  async startDownload(options: JsMultiLinkDownloaderOptions): Promise<void> {
+    this.currentOptions = options;
+    this.currentUrlIndex = 0;
+    this.completedDownloads = [];
+    this.totalSize = options.totalSize ?? null;
+    this.isDownloading = true;
+    this.isPaused = false;
+
+    await this.downloadNextUrl();
+  }
+
+  private async downloadNextUrl(): Promise<void> {
+    if (!this.currentOptions || this.isPaused) {
+      return;
+    }
+
+    const { urls, savePath, headers } = this.currentOptions;
+
+    if (this.currentUrlIndex >= urls.length) {
+      logger.log("[JsMultiLinkDownloader] All downloads complete");
+      this.isDownloading = false;
+      return;
+    }
+
+    const url = urls[this.currentUrlIndex];
+    logger.log(
+      `[JsMultiLinkDownloader] Starting download ${this.currentUrlIndex + 1}/${urls.length}`
+    );
+
+    this.downloader = new JsHttpDownloader();
+
+    try {
+      await this.downloader.startDownload({
+        url,
+        savePath,
+        headers,
+      });
+
+      const status = this.downloader.getDownloadStatus();
+      if (status?.status === "complete") {
+        this.completedDownloads.push({
+          name: status.folderName,
+          size: status.fileSize,
+        });
+      }
+
+      this.currentUrlIndex++;
+      this.downloader = null;
+
+      if (!this.isPaused) {
+        await this.downloadNextUrl();
+      }
+    } catch (err) {
+      logger.error("[JsMultiLinkDownloader] Download error:", err);
+      throw err;
+    }
+  }
+
+  pauseDownload(): void {
+    logger.log("[JsMultiLinkDownloader] Pausing download");
+    this.isPaused = true;
+    if (this.downloader) {
+      this.downloader.pauseDownload();
+    }
+  }
+
+  async resumeDownload(): Promise<void> {
+    if (!this.currentOptions) {
+      throw new Error("No download options available for resume");
+    }
+
+    logger.log("[JsMultiLinkDownloader] Resuming download");
+    this.isPaused = false;
+    this.isDownloading = true;
+
+    if (this.downloader) {
+      await this.downloader.startDownload({
+        url: this.currentOptions.urls[this.currentUrlIndex],
+        savePath: this.currentOptions.savePath,
+        headers: this.currentOptions.headers,
+      });
+
+      const status = this.downloader.getDownloadStatus();
+      if (status?.status === "complete") {
+        this.completedDownloads.push({
+          name: status.folderName,
+          size: status.fileSize,
+        });
+        this.currentUrlIndex++;
+        this.downloader = null;
+        await this.downloadNextUrl();
+      }
+    } else {
+      await this.downloadNextUrl();
+    }
+  }
+
+  cancelDownload(): void {
+    logger.log("[JsMultiLinkDownloader] Cancelling download");
+    this.isPaused = true;
+    this.isDownloading = false;
+
+    if (this.downloader) {
+      this.downloader.cancelDownload();
+      this.downloader = null;
+    }
+
+    this.reset();
+  }
+
+  getDownloadStatus(): JsHttpDownloaderStatus | null {
+    if (!this.currentOptions && this.completedDownloads.length === 0) {
+      return null;
+    }
+
+    let totalBytesDownloaded = 0;
+    let currentDownloadSpeed = 0;
+    let currentFolderName = "";
+    let currentStatus: "active" | "paused" | "complete" | "error" = "active";
+
+    for (const completed of this.completedDownloads) {
+      totalBytesDownloaded += completed.size;
+    }
+
+    if (this.downloader) {
+      const status = this.downloader.getDownloadStatus();
+      if (status) {
+        totalBytesDownloaded += status.bytesDownloaded;
+        currentDownloadSpeed = status.downloadSpeed;
+        currentFolderName = status.folderName;
+        currentStatus = status.status;
+      }
+    } else if (this.completedDownloads.length > 0) {
+      currentFolderName = this.completedDownloads[0].name;
+    }
+
+    if (currentFolderName?.includes("/")) {
+      currentFolderName = currentFolderName.split("/")[0];
+    }
+
+    const totalFileSize =
+      this.totalSize ||
+      this.completedDownloads.reduce((sum, d) => sum + d.size, 0) +
+        (this.downloader?.getDownloadStatus()?.fileSize || 0);
+
+    const allComplete =
+      !this.isDownloading &&
+      this.currentOptions &&
+      this.currentUrlIndex >= this.currentOptions.urls.length;
+
+    if (allComplete) {
+      currentStatus = "complete";
+    } else if (this.isPaused) {
+      currentStatus = "paused";
+    }
+
+    return {
+      folderName: currentFolderName,
+      fileSize: totalFileSize,
+      progress: totalFileSize > 0 ? totalBytesDownloaded / totalFileSize : 0,
+      downloadSpeed: currentDownloadSpeed,
+      numPeers: 0,
+      numSeeds: 0,
+      status: currentStatus,
+      bytesDownloaded: totalBytesDownloaded,
+    };
+  }
+
+  private reset(): void {
+    this.currentOptions = null;
+    this.currentUrlIndex = 0;
+    this.completedDownloads = [];
+    this.totalSize = null;
+    this.isDownloading = false;
+    this.isPaused = false;
+  }
+}

src/renderer/src/features/download-slice.ts

@@ -31,11 +31,16 @@ export const downloadSlice = createSlice({
   reducers: {
     setLastPacket: (state, action: PayloadAction<DownloadProgress | null>) => {
       state.lastPacket = action.payload;
-      if (!state.gameId && action.payload) state.gameId = action.payload.gameId;
+
+      // Ensure payload exists and has a valid gameId before accessing
+      const payload = action.payload;
+      if (!state.gameId && payload?.gameId) {
+        state.gameId = payload.gameId;
+      }
 
       // Track peak speed and speed history atomically when packet arrives
-      if (action.payload?.gameId && action.payload.downloadSpeed != null) {
-        const { gameId, downloadSpeed } = action.payload;
+      if (payload?.gameId && payload.downloadSpeed != null) {
+        const { gameId, downloadSpeed } = payload;
 
         // Update peak speed if this is higher
         const currentPeak = state.peakSpeeds[gameId] || 0;

src/renderer/src/pages/downloads/download-group.tsx

@@ -1,6 +1,6 @@
 import type { GameShop, LibraryGame, SeedingStatus } from "@types";
 
-import { Badge, Button } from "@renderer/components";
+import { Badge, Button, ConfirmationModal } from "@renderer/components";
 import {
   formatDownloadProgress,
   buildGameDetailsPath,
@@ -219,7 +219,7 @@ interface HeroDownloadViewProps {
   calculateETA: () => string;
   pauseDownload: (shop: GameShop, objectId: string) => void;
   resumeDownload: (shop: GameShop, objectId: string) => void;
-  cancelDownload: (shop: GameShop, objectId: string) => void;
+  onCancelClick: (shop: GameShop, objectId: string) => void;
   t: (key: string) => string;
 }
 
@@ -238,7 +238,7 @@ function HeroDownloadView({
   calculateETA,
   pauseDownload,
   resumeDownload,
-  cancelDownload,
+  onCancelClick,
   t,
 }: Readonly<HeroDownloadViewProps>) {
   const navigate = useNavigate();
@@ -353,7 +353,7 @@ function HeroDownloadView({
                 )}
                 <button
                   type="button"
-                  onClick={() => cancelDownload(game.shop, game.objectId)}
+                  onClick={() => onCancelClick(game.shop, game.objectId)}
                   className="download-group__glass-btn"
                 >
                   <XCircleIcon size={14} />
@@ -523,6 +523,13 @@ export function DownloadGroup({
   const [optimisticallyResumed, setOptimisticallyResumed] = useState<
     Record<string, boolean>
   >({});
+  const [cancelModalVisible, setCancelModalVisible] = useState(false);
+  const [gameToCancelShop, setGameToCancelShop] = useState<GameShop | null>(
+    null
+  );
+  const [gameToCancelObjectId, setGameToCancelObjectId] = useState<
+    string | null
+  >(null);
 
   const extractDominantColor = useCallback(
     async (imageUrl: string, gameId: string) => {
@@ -613,11 +620,18 @@ export function DownloadGroup({
     const download = game.download!;
     const isGameDownloading = isGameDownloadingMap[game.id];
 
-    if (download.fileSize != null) return formatBytes(download.fileSize);
-
-    if (lastPacket?.download.fileSize && isGameDownloading)
+    // Check lastPacket first for most up-to-date size during active downloads
+    if (
+      isGameDownloading &&
+      lastPacket?.download.fileSize &&
+      lastPacket.download.fileSize > 0
+    )
       return formatBytes(lastPacket.download.fileSize);
 
+    // Then check the stored download size (must be > 0 to be valid)
+    if (download.fileSize != null && download.fileSize > 0)
+      return formatBytes(download.fileSize);
+
     return "N/A";
   };
 
@@ -651,6 +665,27 @@ export function DownloadGroup({
     [updateLibrary]
   );
 
+  const handleCancelClick = useCallback((shop: GameShop, objectId: string) => {
+    setGameToCancelShop(shop);
+    setGameToCancelObjectId(objectId);
+    setCancelModalVisible(true);
+  }, []);
+
+  const handleConfirmCancel = useCallback(async () => {
+    if (gameToCancelShop && gameToCancelObjectId) {
+      await cancelDownload(gameToCancelShop, gameToCancelObjectId);
+    }
+    setCancelModalVisible(false);
+    setGameToCancelShop(null);
+    setGameToCancelObjectId(null);
+  }, [gameToCancelShop, gameToCancelObjectId, cancelDownload]);
+
+  const handleCancelModalClose = useCallback(() => {
+    setCancelModalVisible(false);
+    setGameToCancelShop(null);
+    setGameToCancelObjectId(null);
+  }, []);
+
   const getGameActions = (game: LibraryGame): DropdownMenuItem[] => {
     const download = lastPacket?.download;
     const isGameDownloading = isGameDownloadingMap[game.id];
@@ -721,7 +756,7 @@ export function DownloadGroup({
         {
           label: t("cancel"),
           onClick: () => {
-            cancelDownload(game.shop, game.objectId);
+            handleCancelClick(game.shop, game.objectId);
           },
           icon: <XCircleIcon />,
         },
@@ -746,7 +781,7 @@ export function DownloadGroup({
       {
         label: t("cancel"),
         onClick: () => {
-          cancelDownload(game.shop, game.objectId);
+          handleCancelClick(game.shop, game.objectId);
         },
         icon: <XCircleIcon />,
       },
@@ -804,136 +839,162 @@ export function DownloadGroup({
     const dominantColor = dominantColors[game.id] || "#fff";
 
     return (
-      <HeroDownloadView
-        game={game}
-        isGameDownloading={isGameDownloading}
-        isGameExtracting={isGameExtracting}
-        downloadSpeed={downloadSpeed}
-        finalDownloadSize={finalDownloadSize}
-        peakSpeed={peakSpeed}
-        currentProgress={currentProgress}
-        dominantColor={dominantColor}
-        lastPacket={lastPacket}
-        speedHistory={gameSpeedHistory}
-        formatSpeed={formatSpeed}
-        calculateETA={calculateETA}
-        pauseDownload={pauseDownload}
-        resumeDownload={resumeDownload}
-        cancelDownload={cancelDownload}
-        t={t}
-      />
+      <>
+        <ConfirmationModal
+          visible={cancelModalVisible}
+          title={t("cancel_download")}
+          descriptionText={t("cancel_download_description")}
+          confirmButtonLabel={t("yes_cancel")}
+          cancelButtonLabel={t("keep_downloading")}
+          onConfirm={handleConfirmCancel}
+          onClose={handleCancelModalClose}
+        />
+        <HeroDownloadView
+          game={game}
+          isGameDownloading={isGameDownloading}
+          isGameExtracting={isGameExtracting}
+          downloadSpeed={downloadSpeed}
+          finalDownloadSize={finalDownloadSize}
+          peakSpeed={peakSpeed}
+          currentProgress={currentProgress}
+          dominantColor={dominantColor}
+          lastPacket={lastPacket}
+          speedHistory={gameSpeedHistory}
+          formatSpeed={formatSpeed}
+          calculateETA={calculateETA}
+          pauseDownload={pauseDownload}
+          resumeDownload={resumeDownload}
+          onCancelClick={handleCancelClick}
+          t={t}
+        />
+      </>
     );
   }
 
   return (
-    <div
-      className={`download-group ${isQueuedGroup ? "download-group--queued" : ""} ${isCompletedGroup ? "download-group--completed" : ""}`}
-    >
-      <div className="download-group__header">
-        <div className="download-group__header-title-group">
-          <h2>{title}</h2>
-          <h3 className="download-group__header-count">{library.length}</h3>
+    <>
+      <ConfirmationModal
+        visible={cancelModalVisible}
+        title={t("cancel_download")}
+        descriptionText={t("cancel_download_description")}
+        confirmButtonLabel={t("yes_cancel")}
+        cancelButtonLabel={t("keep_downloading")}
+        onConfirm={handleConfirmCancel}
+        onClose={handleCancelModalClose}
+      />
+      <div
+        className={`download-group ${isQueuedGroup ? "download-group--queued" : ""} ${isCompletedGroup ? "download-group--completed" : ""}`}
+      >
+        <div className="download-group__header">
+          <div className="download-group__header-title-group">
+            <h2>{title}</h2>
+            <h3 className="download-group__header-count">{library.length}</h3>
+          </div>
         </div>
-      </div>
 
-      <ul className="download-group__simple-list">
-        {downloadInfo.map(({ game, size, progress, isSeeding: seeding }) => {
-          return (
-            <li key={game.id} className="download-group__simple-card">
-              <button
-                type="button"
-                onClick={() => navigate(buildGameDetailsPath(game))}
-                className="download-group__simple-thumbnail"
-              >
-                <img src={game.libraryImageUrl || ""} alt={game.title} />
-              </button>
-
-              <div className="download-group__simple-info">
+        <ul className="download-group__simple-list">
+          {downloadInfo.map(({ game, size, progress, isSeeding: seeding }) => {
+            return (
+              <li key={game.id} className="download-group__simple-card">
                 <button
                   type="button"
                   onClick={() => navigate(buildGameDetailsPath(game))}
-                  className="download-group__simple-title-button"
+                  className="download-group__simple-thumbnail"
                 >
-                  <h3 className="download-group__simple-title">{game.title}</h3>
+                  <img src={game.libraryImageUrl || ""} alt={game.title} />
                 </button>
-                <div className="download-group__simple-meta">
-                  <div className="download-group__simple-meta-row">
-                    <Badge>
-                      {DOWNLOADER_NAME[Number(game.download!.downloader)]}
-                    </Badge>
-                  </div>
-                  <div className="download-group__simple-meta-row">
-                    {extraction?.visibleId === game.id ? (
-                      <span className="download-group__simple-extracting">
-                        {t("extracting")} (
-                        {Math.round(extraction.progress * 100)}%)
-                      </span>
-                    ) : (
-                      <span className="download-group__simple-size">
-                        <DownloadIcon size={14} />
-                        {size}
-                      </span>
-                    )}
-                    {game.download?.progress === 1 && seeding && (
-                      <span className="download-group__simple-seeding">
-                        {t("seeding")}
-                      </span>
-                    )}
+
+                <div className="download-group__simple-info">
+                  <button
+                    type="button"
+                    onClick={() => navigate(buildGameDetailsPath(game))}
+                    className="download-group__simple-title-button"
+                  >
+                    <h3 className="download-group__simple-title">
+                      {game.title}
+                    </h3>
+                  </button>
+                  <div className="download-group__simple-meta">
+                    <div className="download-group__simple-meta-row">
+                      <Badge>
+                        {DOWNLOADER_NAME[Number(game.download!.downloader)]}
+                      </Badge>
+                    </div>
+                    <div className="download-group__simple-meta-row">
+                      {extraction?.visibleId === game.id ? (
+                        <span className="download-group__simple-extracting">
+                          {t("extracting")} (
+                          {Math.round(extraction.progress * 100)}%)
+                        </span>
+                      ) : (
+                        <span className="download-group__simple-size">
+                          <DownloadIcon size={14} />
+                          {size}
+                        </span>
+                      )}
+                      {game.download?.progress === 1 && seeding && (
+                        <span className="download-group__simple-seeding">
+                          {t("seeding")}
+                        </span>
+                      )}
+                    </div>
                   </div>
                 </div>
-              </div>
 
-              {isQueuedGroup && (
-                <div className="download-group__simple-progress">
-                  <span className="download-group__simple-progress-text">
-                    {formatDownloadProgress(progress)}
-                  </span>
-                  <div className="download-group__progress-bar download-group__progress-bar--small">
-                    <div
-                      className="download-group__progress-fill"
-                      style={{
-                        width: `${progress * 100}%`,
-                        backgroundColor: "#fff",
-                      }}
-                    />
+                {isQueuedGroup && (
+                  <div className="download-group__simple-progress">
+                    <span className="download-group__simple-progress-text">
+                      {formatDownloadProgress(progress)}
+                    </span>
+                    <div className="download-group__progress-bar download-group__progress-bar--small">
+                      <div
+                        className="download-group__progress-fill"
+                        style={{
+                          width: `${progress * 100}%`,
+                          backgroundColor: "#fff",
+                        }}
+                      />
+                    </div>
                   </div>
-                </div>
-              )}
+                )}
 
-              <div className="download-group__simple-actions">
-                {game.download?.progress === 1 && (
-                  <Button
-                    theme="primary"
-                    onClick={() => openGameInstaller(game.shop, game.objectId)}
-                    disabled={isGameDeleting(game.id)}
-                    className="download-group__simple-menu-btn"
-                  >
-                    <PlayIcon size={16} />
-                  </Button>
-                )}
-                {isQueuedGroup && game.download?.progress !== 1 && (
-                  <Button
-                    theme="primary"
-                    onClick={() => resumeDownload(game.shop, game.objectId)}
-                    className="download-group__simple-menu-btn"
-                    tooltip={t("resume")}
-                  >
-                    <DownloadIcon size={16} />
-                  </Button>
-                )}
-                <DropdownMenu align="end" items={getGameActions(game)}>
-                  <Button
-                    theme="outline"
-                    className="download-group__simple-menu-btn"
-                  >
-                    <ThreeBarsIcon />
-                  </Button>
-                </DropdownMenu>
-              </div>
-            </li>
-          );
-        })}
-      </ul>
-    </div>
+                <div className="download-group__simple-actions">
+                  {game.download?.progress === 1 && (
+                    <Button
+                      theme="primary"
+                      onClick={() =>
+                        openGameInstaller(game.shop, game.objectId)
+                      }
+                      disabled={isGameDeleting(game.id)}
+                      className="download-group__simple-menu-btn"
+                    >
+                      <PlayIcon size={16} />
+                    </Button>
+                  )}
+                  {isQueuedGroup && game.download?.progress !== 1 && (
+                    <Button
+                      theme="primary"
+                      onClick={() => resumeDownload(game.shop, game.objectId)}
+                      className="download-group__simple-menu-btn"
+                      tooltip={t("resume")}
+                    >
+                      <DownloadIcon size={16} />
+                    </Button>
+                  )}
+                  <DropdownMenu align="end" items={getGameActions(game)}>
+                    <Button
+                      theme="outline"
+                      className="download-group__simple-menu-btn"
+                    >
+                      <ThreeBarsIcon />
+                    </Button>
+                  </DropdownMenu>
+                </div>
+              </li>
+            );
+          })}
+        </ul>
+      </div>
+    </>
   );
 }

src/renderer/src/pages/notifications/notifications.scss

@@ -91,6 +91,7 @@
     display: flex;
     flex-direction: column;
     gap: globals.$spacing-unit;
+    padding-bottom: calc(globals.$spacing-unit * 3);
   }
 
   &__empty {
@@ -134,5 +135,6 @@
     display: flex;
     justify-content: center;
     padding: calc(globals.$spacing-unit * 2);
+    padding-bottom: calc(globals.$spacing-unit * 3);
   }
 }

src/renderer/src/pages/settings/settings-general.tsx

@@ -53,6 +53,7 @@ export function SettingsGeneral() {
     achievementSoundVolume: 15,
     language: "",
     customStyles: window.localStorage.getItem("customStyles") || "",
+    useNativeHttpDownloader: false,
   });
 
   const [languageOptions, setLanguageOptions] = useState<LanguageOption[]>([]);
@@ -131,6 +132,8 @@ export function SettingsGeneral() {
         friendStartGameNotificationsEnabled:
           userPreferences.friendStartGameNotificationsEnabled ?? true,
         language: language ?? "en",
+        useNativeHttpDownloader:
+          userPreferences.useNativeHttpDownloader ?? false,
       }));
     }
   }, [userPreferences, defaultDownloadsPath]);
@@ -248,6 +251,18 @@ export function SettingsGeneral() {
         }))}
       />
 
+      <h2 className="settings-general__section-title">{t("downloads")}</h2>
+
+      <CheckboxField
+        label={t("use_native_http_downloader")}
+        checked={form.useNativeHttpDownloader}
+        onChange={() =>
+          handleChange({
+            useNativeHttpDownloader: !form.useNativeHttpDownloader,
+          })
+        }
+      />
+
       <h2 className="settings-general__section-title">{t("notifications")}</h2>
 
       <CheckboxField

src/types/level.types.ts

@@ -128,6 +128,7 @@ export interface UserPreferences {
   autoplayGameTrailers?: boolean;
   hideToTrayOnGameStart?: boolean;
   enableNewDownloadOptionsBadges?: boolean;
+  useNativeHttpDownloader?: boolean;
 }
 
 export interface ScreenState {