Add unzip functionality for non-torrent downloads

Add functionality to automatically unzip downloaded .zip files from sources other than torrents.

* Add `unzipFile` helper function in `src/main/services/download/helpers.ts` to handle unzipping .zip files.
* Modify `src/main/services/download/download-manager.ts` to check if the downloaded file is a .zip file and unzip it after download completion.
* Update `src/main/services/python-rpc.ts` to support unzipping functionality by handling .zip files in the `spawn` method.

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

@@ -15,7 +15,7 @@ import {
   LibtorrentStatus,
   PauseDownloadPayload,
 } from "./types";
-import { calculateETA, getDirSize } from "./helpers";
+import { calculateETA, getDirSize, unzipFile } from "./helpers";
 import { QueryDeepPartialEntity } from "typeorm/query-builder/QueryPartialEntity";
 import { RealDebridClient } from "./real-debrid";
 import path from "path";
@@ -139,6 +139,12 @@ export class DownloadManager {
           );
 
           this.cancelDownload(gameId);
+
+          if (game.uri?.endsWith(".zip")) {
+            const zipFilePath = path.join(game.downloadPath!, game.folderName!);
+            const outputDir = path.join(game.downloadPath!, game.folderName!);
+            await unzipFile(zipFilePath, outputDir);
+          }
         }
 
         await downloadQueueRepository.delete({ game });

src/main/services/download/helpers.ts

@@ -1,6 +1,7 @@
 import path from "node:path";
 import fs from "node:fs";
 import { logger } from "../logger";
+import unzipper from "unzipper";
 
 export const calculateETA = (
   totalLength: number,
@@ -38,3 +39,15 @@ export const getDirSize = async (dir: string): Promise<number> => {
     return 0;
   }
 };
+
+export const unzipFile = async (zipFilePath: string, outputDir: string) => {
+  try {
+    await fs.createReadStream(zipFilePath)
+      .pipe(unzipper.Extract({ path: outputDir }))
+      .promise();
+    logger.info(`Unzipped ${zipFilePath} to ${outputDir}`);
+  } catch (error) {
+    logger.error(`Failed to unzip ${zipFilePath}`, error);
+    throw error;
+  }
+};

src/main/services/python-rpc.ts

@@ -8,6 +8,7 @@ import crypto from "node:crypto";
 import { pythonRpcLogger } from "./logger";
 import { Readable } from "node:stream";
 import { app, dialog } from "electron";
+import { unzipFile } from "./download/helpers"; // Import the unzip helper function
 
 interface GamePayload {
   game_id: number;
@@ -42,7 +43,7 @@ export class PythonRPC {
     readable.on("data", pythonRpcLogger.log);
   }
 
-  public static spawn(
+  public static async spawn(
     initialDownload?: GamePayload,
     initialSeeding?: GamePayload[]
   ) {
@@ -96,6 +97,13 @@ export class PythonRPC {
 
       this.pythonProcess = childProcess;
     }
+
+    // Handle unzipping if initialDownload is a .zip file
+    if (initialDownload && initialDownload.url.endsWith(".zip")) {
+      const zipFilePath = path.join(initialDownload.save_path, initialDownload.url.split('/').pop()!);
+      const outputDir = initialDownload.save_path;
+      await unzipFile(zipFilePath, outputDir);
+    }
   }
 
   public static kill() {