validate invalid file extension

Author: Guven Karanfil

dist/index.js

@@ -22,11 +22,14 @@ export async function run(): Promise<void> {
     const appPath = core.getInput('appPath')
     const message = core.getInput('message')
 
-    const validExtensions = ['.ipa', '.apk', '.zip', '.aab']
+    const validExtensions = ['.ipa', '.apk', '.aab', '.zip']
     const fileExtension = appPath.slice(appPath.lastIndexOf('.')).toLowerCase()
     if (!validExtensions.includes(fileExtension)) {
       core.setFailed(
-        `Invalid file extension: ${appPath}. For Android, use .apk. For iOS, use .ipa.`
+        `Invalid file extension for '${appPath}'. Please use one of the following:\n` +
+          `- Android: .apk or .aab\n` +
+          `- iOS: .ipa\n` +
+          `- Both: .zip`
       )
       return
     }