from flask import Flask, request, jsonify
import whisper
import os

# Initialize Flask app
app = Flask(__name__)

print("\nHello welcome to SemaBox\n", flush=True)

# Load Whisper model
model = whisper.load_model("small")

def transcribe(audio_path):
    # Load audio and pad/trim it to fit 30 seconds
    audio = whisper.load_audio(audio_path)
    audio = whisper.pad_or_trim(audio)

    # Make log-Mel spectrogram and move to the same device as the model
    mel = whisper.log_mel_spectrogram(audio).to(model.device)

    # Detect the spoken language
    _, probs = model.detect_language(mel)
    detected_language = max(probs, key=probs.get)
    print(f"Detected language: {detected_language}")

    # Decode the audio
    options = whisper.DecodingOptions(fp16=False)
    result = whisper.decode(model, mel, options)
    return result.text, detected_language

# Define the route for transcription
@app.route('/transcribe', methods=['POST'])
def transcribe_audio():
    # Check if an audio file is included in the request
    if 'audio' not in request.files:
        return jsonify({"error": "No audio file provided"}), 400
    
    audio_file = request.files['audio']
    
    # Save the uploaded audio file
    audio_path = os.path.join("temp_audio", audio_file.filename)
    audio_file.save(audio_path)
    
    # Transcribe the audio
    transcription, language = transcribe(audio_path)
    
    # Clean up the saved file
    os.remove(audio_path)
    
    # Return the transcription and detected language
    return jsonify({"transcription": transcription, "language": language}), 200

# Healthcheck endpoint
@app.route('/healthcheck', methods=['GET'])
def healthcheck():
    return jsonify({"status": "API is running"}), 200

# Run the Flask app
if __name__ == '__main__':
    # Ensure the temp_audio directory exists
    if not os.path.exists("temp_audio"):
        os.makedirs("temp_audio")
        
    app.run(host="0.0.0.0", port=5000)