Поддержка скачивания нескольких файлов, с правильным неймингом: файл, файл (1), файл (2). Таким образом удалось избежать перезаписи существующих файлов с таким же названием

app/hooks/useFileStorage.ts

@@ -9,5 +9,15 @@ export function useFileStorage() {
         return result;
     }
 
-    return {writeFile, readFile};
+    const fileExists = async (file : string, inWorkingDir : boolean = true) => {
+        const result = await window.electron.ipcRenderer.invoke('fileStorage:fileExists', file, inWorkingDir);
+        return result;
+    }
+
+    const size = async (file : string, inWorkingDir : boolean = true) => {
+        const result = await window.electron.ipcRenderer.invoke('fileStorage:size', file, inWorkingDir);
+        return result;
+    }
+
+    return {writeFile, readFile, fileExists, size};
 }

app/providers/AttachmentProvider/useAttachment.ts

@@ -30,7 +30,7 @@ export function useAttachment(attachment: Attachment, keyPlain: string) {
     const downloadPercentage = useDownloadStatus(attachment.id);
     const [downloadStatus, setDownloadStatus] = useMemory("attachment-downloaded-status-" + attachment.id, DownloadStatus.PENDING, true);
     const [downloadTag, setDownloadTag] = useState("");
-    const {readFile, writeFile} = useFileStorage();
+    const {readFile, writeFile, fileExists, size} = useFileStorage();
     const { downloadFile } = useTransport();
     const publicKey = usePublicKey();
     const privatePlain = usePrivatePlain();
@@ -83,10 +83,12 @@ export function useAttachment(attachment: Attachment, keyPlain: string) {
              * а в загрузках
              */
             const preview = getPreview();
+            const filesize = parseInt(preview.split("::")[0]);
             const filename = preview.split("::")[1];
             let pathInDownloads = window.downloadsPath + "/Rosetta Downloads/" + filename;
-            const fileData = await readFile(pathInDownloads, false);
+            const exists = await fileExists(pathInDownloads, false);
-            if(fileData){
+            const existsLength = await size(pathInDownloads, false);
+            if(exists && existsLength == filesize){
                 setDownloadStatus(DownloadStatus.DOWNLOADED);
                 return;
             }
@@ -150,7 +152,6 @@ export function useAttachment(attachment: Attachment, keyPlain: string) {
         } 
         setDownloadStatus(DownloadStatus.DECRYPTING);
         //console.info("Decrypted attachment ", Buffer.from(keyPlain, 'binary').toString('hex'));
-        console.info("KP", keyPlain);
         const decrypted = await decodeWithPassword(keyPlain, downloadedBlob);
         setDownloadTag("");
         if(attachment.type == AttachmentType.FILE) {
@@ -162,7 +163,17 @@ export function useAttachment(attachment: Attachment, keyPlain: string) {
             const filename = preview.split("::")[1];
             let buffer = Buffer.from(decrypted.split(",")[1], 'base64');
             let pathInDownloads = window.downloadsPath + "/Rosetta Downloads/" + filename;
-            await writeFile(pathInDownloads, buffer, false);
+            /**
+             * Пишем файл в загрузки, но перед этим выбираем ему название, если файл в загрузках 
+             * уже есть с таким названием то добавляем к названию (1), (2) и так далее, чтобы не перезаписать существующий файл
+             */
+            let finalPath = pathInDownloads;
+            let fileIndex = 1;
+            while (await fileExists(finalPath, false)) {
+                finalPath = window.downloadsPath + "/Rosetta Downloads/" + filename.split(".").slice(0, -1).join(".") + ` (${fileIndex})` + "." + filename.split(".").slice(-1);
+                fileIndex++;
+            }
+            await writeFile(finalPath, buffer, false);
             setDownloadStatus(DownloadStatus.DOWNLOADED);
             return;
         }

lib/main/ipcs/ipcFilestorage.ts

@@ -2,16 +2,20 @@ import { ipcMain } from "electron";
 import { WORKING_DIR } from "../constants";
 import fs from 'fs/promises'
 import path from 'path'
+import { Logger } from "../logger";
+
+const logger = Logger('ipcFilestorage');
 
 ipcMain.handle('fileStorage:writeFile', async (_, file: string, data: string | Buffer, inWorkingDir : boolean = true) => {
+    logger.log(`System call fileStorage:writeFile with file=${file} inWorkingDir=${inWorkingDir}`);
     const fullPath = path.join(inWorkingDir ? WORKING_DIR : '', file);
     await fs.mkdir(path.dirname(fullPath), { recursive: true });
     await fs.writeFile(fullPath, data);
-    console.info("File written to " + fullPath);
     return true;
 });
 
 ipcMain.handle('fileStorage:readFile', async (_, file: string, inWorkingDir : boolean = true) => {
+    logger.log(`System call fileStorage:readFile with file=${file} inWorkingDir=${inWorkingDir}`);
     try{
         const fullPath = path.join(inWorkingDir ? WORKING_DIR : '', file);
         const data = await fs.readFile(fullPath);
@@ -20,3 +24,25 @@ ipcMain.handle('fileStorage:readFile', async (_, file: string, inWorkingDir : bo
         return null;
     }
 });
+
+ipcMain.handle('fileStorage:size', async (_, file: string, inWorkingDir : boolean = true) => {
+    logger.log(`System call fileStorage:size with file=${file} inWorkingDir=${inWorkingDir}`);
+    try{
+        const fullPath = path.join(inWorkingDir ? WORKING_DIR : '', file);
+        const stats = await fs.stat(fullPath);
+        return stats.size;
+    }catch(e){
+        return 0;
+    }
+});
+
+ipcMain.handle('fileStorage:fileExists', async (_, file: string, inWorkingDir : boolean = true) => {
+    logger.log(`System call fileStorage:fileExists with file=${file} inWorkingDir=${inWorkingDir}`);
+    try{
+        const fullPath = path.join(inWorkingDir ? WORKING_DIR : '', file);
+        await fs.access(fullPath);
+        return true;
+    }catch(e){
+        return false;
+    }
+});