refactor code and create temp util

src/services/heicConvertor.ts

@@ -1,9 +1,8 @@
 import { exec, ExecException } from 'child_process';
-import { app } from 'electron';
-import { existsSync, rmSync } from 'fs';
+import { rmSync } from 'fs';
 import path from 'path';
-import { mkdir, readFile, writeFile } from 'promise-fs';
-import { generateRandomName } from '../utils/common';
+import { readFile, writeFile } from 'promise-fs';
+import { generateTempName, getTempDirPath } from '../utils/temp';
 import { logErrorSentry } from './sentry';
 
 export async function convertHEIC(
@@ -12,14 +11,11 @@ export async function convertHEIC(
     let tempInputFilePath: string;
     let tempOutputFilePath: string;
     try {
-        const tempDir = path.join(app.getPath('temp'), 'ente');
-        if (!existsSync(tempDir)) {
-            await mkdir(tempDir);
-        }
-        const tempName = generateRandomName(10);
+        const tempDirPath = await getTempDirPath();
+        const tempName = generateTempName(10);
 
-        tempInputFilePath = path.join(tempDir, tempName + '.heic');
-        tempOutputFilePath = path.join(tempDir, tempName + '.jpeg');
+        tempInputFilePath = path.join(tempDirPath, tempName + '.heic');
+        tempOutputFilePath = path.join(tempDirPath, tempName + '.jpeg');
 
         await writeFile(tempInputFilePath, heicFileData);
 

src/utils/common.ts

@@ -1,17 +1,2 @@
 import { app } from 'electron';
 export const isDev = !app.isPackaged;
-
-const characters =
-    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
-
-export function generateRandomName(length: number) {
-    let result = '';
-
-    const charactersLength = characters.length;
-    for (let i = 0; i < length; i++) {
-        result += characters.charAt(
-            Math.floor(Math.random() * charactersLength)
-        );
-    }
-    return result;
-}

src/utils/temp.ts

@@ -0,0 +1,36 @@
+import { app } from 'electron';
+import { emptyDir } from 'fs-extra';
+import path from 'path';
+import { existsSync, mkdir } from 'promise-fs';
+
+const ENTE_TEMP_DIRECTORY = 'ente';
+
+const ALPHABETS =
+    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+
+export async function getTempDirPath() {
+    const tempDirPath = path.join(app.getPath('temp'), ENTE_TEMP_DIRECTORY);
+    if (!existsSync(tempDirPath)) {
+        await mkdir(tempDirPath);
+    }
+    return tempDirPath;
+}
+
+export async function clearEnteTempFolder() {
+    const tempDirPath = await this.getTempDirPath();
+    if (existsSync(tempDirPath)) {
+        await emptyDir(tempDirPath);
+    }
+}
+
+export function generateTempName(length: number) {
+    let result = '';
+
+    const charactersLength = ALPHABETS.length;
+    for (let i = 0; i < length; i++) {
+        result += ALPHABETS.charAt(
+            Math.floor(Math.random() * charactersLength)
+        );
+    }
+    return result;
+}