from flask import Flask, render_template, request, jsonify, send_file
import speech_recognition as sr
import requests
import smtplib
from email.message import EmailMessage
from transformers import pipeline
from reportlab.pdfgen import canvas
import os

app = Flask(__name__)

# Google Speech-to-Text API Anahtarı (JSON dosyanızın yolu)
os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "your-google-cloud-key.json"

# Gemini API Anahtarı
GEMINI_API_KEY = "your-gemini-api-key"

# Hugging Face Özetleme Modeli
summary_pipeline = pipeline("summarization", model="facebook/bart-large-cnn")

### 📌 1️⃣ Speech-to-Text API ###
@app.route('/speech-to-text', methods=['POST'])
def speech_to_text():
    if 'audio' not in request.files:
        return jsonify({"error": "No audio file provided"}), 400
    
    audio_file = request.files['audio']
    recognizer = sr.Recognizer()

    with sr.AudioFile(audio_file) as source:
        audio_data = recognizer.record(source)
        try:
            text = recognizer.recognize_google(audio_data, language="tr-TR")
            return jsonify({"text": text})
        except sr.UnknownValueError:
            return jsonify({"error": "Could not understand audio"})
        except sr.RequestError:
            return jsonify({"error": "Could not request results"})

### 📌 2️⃣ Metni Özetleme (Gemini API) ###
def summarize_text(text):
    url = "https://generativelanguage.googleapis.com/v1/models/gemini-pro:generateText"
    headers = {"Authorization": f"Bearer {GEMINI_API_KEY}"}
    payload = {
        "prompt": f"Summarize this meeting transcript:\n{text}",
        "max_tokens": 500
    }
    response = requests.post(url, json=payload, headers=headers)
    return response.json()["choices"][0]["text"]

@app.route('/summarize', methods=['POST'])
def summarize():
    data = request.get_json()
    text = data.get("text")
    if not text:
        return jsonify({"error": "No text provided"}), 400

    summary = summarize_text(text)
    return jsonify({"summary": summary})

### 📌 3️⃣ Kararları Çıkarma (Hugging Face NLP) ###
def extract_decisions(text):
    summary = summary_pipeline(text, max_length=100, min_length=30, do_sample=False)
    return summary[0]['summary_text']

@app.route('/extract-decisions', methods=['POST'])
def extract():
    data = request.get_json()
    text = data.get("text")
    if not text:
        return jsonify({"error": "No text provided"}), 400

    decisions = extract_decisions(text)
    return jsonify({"decisions": decisions})

### 📌 4️⃣ PDF Raporu Oluşturma ###
def create_pdf(text, filename="meeting_report.pdf"):
    c = canvas.Canvas(filename)
    c.drawString(100, 750, "Meeting Report")
    c.drawString(100, 730, text)
    c.save()
    return filename

@app.route('/generate-pdf', methods=['POST'])
def generate_pdf():
    data = request.get_json()
    text = data.get("text")
    if not text:
        return jsonify({"error": "No text provided"}), 400

    pdf_file = create_pdf(text)
    return send_file(pdf_file, as_attachment=True)

### 📌 5️⃣ E-Posta Gönderme ###
def send_email(pdf_file, recipient_email):
    email = "your-email@gmail.com"
    password = "your-email-password"
    
    msg = EmailMessage()
    msg['Subject'] = 'Meeting Report'
    msg['From'] = email
    msg['To'] = recipient_email
    msg.set_content('The meeting report is attached.')

    with open(pdf_file, 'rb') as f:
        file_data = f.read()
        msg.add_attachment(file_data, maintype='application', subtype='pdf', filename=pdf_file)

    with smtplib.SMTP_SSL('smtp.gmail.com', 465) as server:
        server.login(email, password)
        server.send_message(msg)

@app.route('/')
def home():
    return render_template('index.html')

if __name__ == '__main__':
    app.run(debug=True)