Update app.py

app.py

@@ -56,7 +56,13 @@ def android_download():
 
 def iphone_download():
     try:
-        command = ['ffmpeg', '-i', f'{DOWNLOAD_FOLDER}/AndroidRingtone.mp3', '-t', '20', '-acodec', 'aac', '-b:a', '128k', '-f', 'mp4', f'{DOWNLOAD_FOLDER}/iPhoneRingtone.m4r']
+        # Ensure Android ringtone exists first
+        android_ringtone_path = os.path.join(DOWNLOAD_FOLDER, 'AndroidRingtone.mp3')
+        if not os.path.exists(android_ringtone_path):
+            return "Error: Android ringtone not found. Please create the Android ringtone first."
+
+        # Convert Android ringtone to iPhone format
+        command = ['ffmpeg', '-i', android_ringtone_path, '-t', '20', '-acodec', 'aac', '-b:a', '128k', '-f', 'mp4', f'{DOWNLOAD_FOLDER}/iPhoneRingtone.m4r']
         process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         stdout, stderr = process.communicate()