from flask import Flask, request, jsonify
from transformers import pipeline
from transformers import AutoTokenizer, AutoModelForTokenClassification
import whisper
import os

import ffmpeg

app = Flask(__name__)

# Initialize Whisper model
whisper_model = whisper.load_model("small")  # Renamed variable

# Initialize Emotion Classifier
classifier = pipeline("text-classification", model="j-hartmann/emotion-english-distilroberta-base", return_all_scores=True)

# Initialize NER pipeline
ner_tokenizer = AutoTokenizer.from_pretrained("dslim/bert-base-NER")
ner_model = AutoModelForTokenClassification.from_pretrained("dslim/bert-base-NER")  # Renamed variable
ner_pipeline = pipeline("ner", model=ner_model, tokenizer=ner_tokenizer)  # Renamed variable


@app.route('/transcribe', methods=['POST'])
def transcribe_audio():
    # Check if a file was uploaded
    if 'file' not in request.files:
        return jsonify({'error': 'No file uploaded'}), 400

    file = request.files['file']

    # Check if the file is empty
    if file.filename == '':
        return jsonify({'error': 'No selected file'}), 400

    try:
        # Save the uploaded file to a temporary file
        with tempfile.NamedTemporaryFile(delete=False, suffix=".mp3") as temp_audio:
            file.save(temp_audio)
            temp_path = temp_audio.name

        # Transcribe the audio using Whisper
        result = whisper_model.transcribe(temp_path)
        transcription = result["text"]

        # Clean up the temporary file
        os.remove(temp_path)

        return jsonify({'transcription': transcription})

    except Exception as e:
        return jsonify({'error': str(e)}), 500

        
        
@app.route('/classify', methods=['POST'])
def classify():
    try:
        data = request.get_json()
        if 'text' not in data:
            return jsonify({"error": "Missing 'text' field"}), 400
        
        text = data['text']
        result = classifier(text)
        return jsonify(result)
    
    except Exception as e:
        return jsonify({"error": str(e)}), 500

@app.route('/ner', methods=['POST'])
def ner_endpoint():
    try:
        data = request.get_json()
        text = data.get("text", "")
        
        # Use the renamed ner_pipeline
        ner_results = ner_pipeline(text)
        
        words_and_entities = [
            {"word": result['word'], "entity": result['entity']} 
            for result in ner_results
        ]
        
        return jsonify({"entities": words_and_entities})
    except Exception as e:
        return jsonify({"error": str(e)}), 500