from gtts import gTTS
import io

# Convert translated text to speech
def text_to_speech(text, target_lang):
    try:
        if not text or not text.strip():  # Check for valid text
            print("Error: Empty or invalid text for speech synthesis")
            return None
        cleaned_text = text.strip()[:200]  # Clean and limit text to 200 characters
        print(f"Attempting to synthesize: '{cleaned_text}' for lang: {target_lang}")
        lang_map = {"en": "en", "fr": "fr", "es": "es", "de": "de", "hi": "hi", "zh": "zh-cn", "ar": "ar", "ru": "ru", "ja": "ja"}
        lang_code = lang_map.get(target_lang, "en")
        if lang_code not in lang_map.values():  # Validate language code
            print(f"Error: Unsupported language code {lang_code} for speech synthesis")
            return None
        tts = gTTS(text=cleaned_text, lang=lang_code, slow=False)
        audio_buffer = io.BytesIO()
        tts.write_to_fp(audio_buffer)
        audio_buffer.seek(0)
        if audio_buffer.getbuffer().nbytes > 0:  # Verify audio data
            print(f"Audio generated successfully, size: {audio_buffer.getbuffer().nbytes} bytes")
            return audio_buffer
        print("Error: Audio buffer is empty after synthesis")
        return None
    except Exception as e:
        print(f"Audio error: {e}")
        return None