refactor: improve error handling in download processes and simplify button content rendering in download settings modal

src/main/events/torrenting/add-game-to-queue.ts

@@ -57,7 +57,7 @@ const addGameToQueue = async (
     const updatedGame = await gamesSublevel.get(gameKey);
 
     await Promise.all([
-      createGame(updatedGame!).catch(() => {}),
+      createGame(updatedGame).catch(() => {}),
       HydraApi.post(`/games/${shop}/${objectId}/download`, null, {
         needsAuth: false,
       }).catch(() => {}),

src/main/events/torrenting/update-download-queue-position.ts

@@ -13,7 +13,7 @@ const updateDownloadQueuePosition = async (
 
   const download = await downloadsSublevel.get(gameKey);
 
-  if (!download || !download.queued || download.status !== "paused") {
+  if (!download?.queued || download.status !== "paused") {
     return false;
   }
 

src/main/helpers/download-error-handler.ts

@@ -1,48 +1,63 @@
 import { AxiosError } from "axios";
 import { Downloader, DownloadError } from "@shared";
 
+type DownloadErrorResult = { ok: false; error?: string };
+
+const handleAxiosError = (
+  err: AxiosError,
+  downloader: Downloader
+): DownloadErrorResult | null => {
+  if (err.response?.status === 429 && downloader === Downloader.Gofile) {
+    return { ok: false, error: DownloadError.GofileQuotaExceeded };
+  }
+
+  if (err.response?.status === 403 && downloader === Downloader.RealDebrid) {
+    return { ok: false, error: DownloadError.RealDebridAccountNotAuthorized };
+  }
+
+  if (downloader === Downloader.TorBox) {
+    const data = err.response?.data as { detail?: string } | undefined;
+    return { ok: false, error: data?.detail };
+  }
+
+  return null;
+};
+
+const HOST_NAMES: Partial<Record<Downloader, string>> = {
+  [Downloader.Buzzheavier]: "Buzzheavier",
+  [Downloader.FuckingFast]: "FuckingFast",
+};
+
+const handleHostSpecificError = (
+  message: string,
+  downloader: Downloader
+): DownloadErrorResult | null => {
+  const hostName = HOST_NAMES[downloader];
+  if (!hostName) return null;
+
+  if (message.includes("Rate limit")) {
+    return { ok: false, error: `${hostName}: Rate limit exceeded` };
+  }
+
+  if (message.includes("not found") || message.includes("deleted")) {
+    return { ok: false, error: `${hostName}: File not found` };
+  }
+
+  return null;
+};
+
 export const handleDownloadError = (
   err: unknown,
   downloader: Downloader
-): { ok: false; error?: string } => {
+): DownloadErrorResult => {
   if (err instanceof AxiosError) {
-    if (err.response?.status === 429 && downloader === Downloader.Gofile) {
-      return { ok: false, error: DownloadError.GofileQuotaExceeded };
-    }
-
-    if (err.response?.status === 403 && downloader === Downloader.RealDebrid) {
-      return { ok: false, error: DownloadError.RealDebridAccountNotAuthorized };
-    }
-
-    if (downloader === Downloader.TorBox) {
-      return { ok: false, error: err.response?.data?.detail };
-    }
+    const result = handleAxiosError(err, downloader);
+    if (result) return result;
   }
 
   if (err instanceof Error) {
-    if (downloader === Downloader.Buzzheavier) {
-      if (err.message.includes("Rate limit")) {
-        return { ok: false, error: "Buzzheavier: Rate limit exceeded" };
-      }
-      if (
-        err.message.includes("not found") ||
-        err.message.includes("deleted")
-      ) {
-        return { ok: false, error: "Buzzheavier: File not found" };
-      }
-    }
-
-    if (downloader === Downloader.FuckingFast) {
-      if (err.message.includes("Rate limit")) {
-        return { ok: false, error: "FuckingFast: Rate limit exceeded" };
-      }
-      if (
-        err.message.includes("not found") ||
-        err.message.includes("deleted")
-      ) {
-        return { ok: false, error: "FuckingFast: File not found" };
-      }
-    }
+    const hostResult = handleHostSpecificError(err.message, downloader);
+    if (hostResult) return hostResult;
 
     return { ok: false, error: err.message };
   }

src/renderer/src/pages/game-details/modals/download-settings-modal.tsx

@@ -221,6 +221,33 @@ export function DownloadSettingsModal({
     }
   };
 
+  const getButtonContent = () => {
+    if (downloadStarting) {
+      return (
+        <>
+          <SyncIcon className="download-settings-modal__loading-spinner" />
+          {t("loading")}
+        </>
+      );
+    }
+
+    if (hasActiveDownload) {
+      return (
+        <>
+          <PlusIcon />
+          {t("add_to_queue")}
+        </>
+      );
+    }
+
+    return (
+      <>
+        <DownloadIcon />
+        {t("download_now")}
+      </>
+    );
+  };
+
   const handleStartClick = async () => {
     if (repack) {
       setDownloadStarting(true);
@@ -462,22 +489,7 @@ export function DownloadSettingsModal({
             )
           }
         >
-          {downloadStarting ? (
-            <>
-              <SyncIcon className="download-settings-modal__loading-spinner" />
-              {t("loading")}
-            </>
-          ) : hasActiveDownload ? (
-            <>
-              <PlusIcon />
-              {t("add_to_queue")}
-            </>
-          ) : (
-            <>
-              <DownloadIcon />
-              {t("download_now")}
-            </>
-          )}
+          {getButtonContent()}
         </Button>
       </div>