import torch
from flask import Flask, render_template, request, jsonify
import json
import os
from transformers import pipeline
from gtts import gTTS
from pydub import AudioSegment
from pydub.silence import detect_nonsilent
from transformers import AutoConfig  # Import AutoConfig for the config object
import time
from waitress import serve
from simple_salesforce import Salesforce
import requests  # Import requests for exception handling

app = Flask(__name__)

# Use whisper-small for faster processing and better speed
device = "cuda" if torch.cuda.is_available() else "cpu"

# Create config object to set timeout and other parameters
config = AutoConfig.from_pretrained("openai/whisper-small")
config.update({"timeout": 60})  # Set timeout to 60 seconds

# Salesforce credentials (Replace with actual values)
try:
    print("Attempting to connect to Salesforce...")
    sf = Salesforce(username='diggavalli98@gmail.com', password='Sati@1020', security_token='sSSjyhInIsUohKpG8sHzty2q')
    print("Connected to Salesforce successfully!")
    print("User Info:", sf.UserInfo)  # Log the user info to verify the connection
except Exception as e:
    print(f"Failed to connect to Salesforce: {str(e)}")

# Function for Salesforce operations
def create_salesforce_record(name, email, phone_number):
    try:
        # Create a new record in Salesforce's Customer_Login__c object
        customer_login = sf.Customer_Login__c.create({
            'Name': name,
            'Email__c': email,
            'Phone_Number__c': phone_number
        })
        return customer_login
    except SalesforceResourceNotFound as e:
        raise Exception(f"Salesforce resource not found: {str(e)}")
    except Exception as e:
        raise Exception(f"Failed to create record: {str(e)}")

def get_menu_items():
    query = "SELECT Name, Price__c, Ingredients__c, Category__c FROM Menu_Item__c"
    result = sf.query(query)
    return result['records']

# Voice-related functions
def generate_audio_prompt(text, filename):
    try:
        tts = gTTS(text)
        tts.save(os.path.join("static", filename))
    except gtts.tts.gTTSError as e:
        print(f"Error: {e}")
        print("Retrying after 5 seconds...")
        time.sleep(5)  # Wait for 5 seconds before retrying
        generate_audio_prompt(text, filename)

# Utility functions
def convert_to_wav(input_path, output_path):
    try:
        audio = AudioSegment.from_file(input_path)
        audio = audio.set_frame_rate(16000).set_channels(1)  # Convert to 16kHz, mono
        audio.export(output_path, format="wav")
    except Exception as e:
        print(f"Error: {str(e)}")
        raise Exception(f"Audio conversion failed: {str(e)}")

def is_silent_audio(audio_path):
    audio = AudioSegment.from_wav(audio_path)
    nonsilent_parts = detect_nonsilent(audio, min_silence_len=500, silence_thresh=audio.dBFS-16)  # Reduced silence duration
    print(f"Detected nonsilent parts: {nonsilent_parts}")
    return len(nonsilent_parts) == 0  # If no speech detected

# Routes and Views
@app.route("/")
def index():
    return render_template("index.html")

@app.route("/dashboard", methods=["GET"])
def dashboard():
    return render_template("dashboard.html")  # Render the dashboard template

@app.route('/submit', methods=['POST'])
def submit():
    try:
        # Ensure JSON is being received
        data = request.get_json()
        print("Received Data:", data)  # Debugging line

        if not data:
            return jsonify({"success": False, "message": "Invalid or empty JSON received"}), 400

        # Get the values from the JSON data
        name = data.get("name")
        email = data.get("email")
        phone = data.get("phone")

        # Validate if all fields are present
        if not name or not email or not phone:
            return jsonify({"success": False, "message": "Missing required fields"}), 400

        # Prepare data for Salesforce submission
        salesforce_data = {
            "Name": name,
            "Email__c": email,  # Ensure this is the correct field API name in Salesforce
            "Phone_Number__c": phone  # Ensure this is the correct field API name in Salesforce
        }

        # Insert data into Salesforce using simple_salesforce
        try:
            result = sf.Customer_Login__c.create(salesforce_data)  # Replace `Customer_Login__c` with your Salesforce object API name
            print(f"Salesforce Response: {result}")  # Debugging line

            return jsonify({"success": True, "message": "Data submitted successfully"})
        
        except Exception as e:
            if "STORAGE_LIMIT_EXCEEDED" in str(e):
                return jsonify({"success": False, "message": "Salesforce storage limit exceeded. Please clean up or contact support."}), 500
            else:
                print(f"Salesforce Insertion Error: {str(e)}")  # Log Salesforce errors
                return jsonify({"success": False, "message": "Salesforce submission failed", "error": str(e)}), 500

    except Exception as e:
        print(f"Server Error: {str(e)}")  # Log general errors
        return jsonify({"success": False, "message": "Internal server error", "error": str(e)}), 500


@app.route('/validate-login', methods=['POST'])
def validate_login():
    try:
        # Ensure JSON is being received
        data = request.get_json()
        login_email = data.get("email")
        login_mobile = data.get("mobile")

        # Validate if email and mobile are present
        if not login_email or not login_mobile:
            return jsonify({"success": False, "message": "Missing email or mobile number"}), 400

        # Query Salesforce to check if the record exists
        query = f"SELECT Id, Name, Email__c, Phone_Number__c FROM Customer_Login__c WHERE Email__c = '{login_email}' AND Phone_Number__c = '{login_mobile}'"
        result = sf.query(query)

        if result['records']:
            # If a matching record is found, return success and the name
            user_name = result['records'][0]['Name']  # Assuming the 'Name' field is present in the Salesforce object
            return jsonify({"success": True, "message": "Login successful", "name": user_name})
        else:
            # If no matching record is found
            return jsonify({"success": False, "message": "Invalid email or mobile number"}), 401

    except Exception as e:
        print(f"Error validating login: {str(e)}")
        return jsonify({"success": False, "message": "Internal server error", "error": str(e)}), 500


@app.route("/menu", methods=["GET"])
def menu_page():
    menu_items = get_menu_items()
    menu_data = [{"name": item['Name'], "price": item['Price__c'], "ingredients": item['Ingredients__c'], "category": item['Category__c']} for item in menu_items]
    return render_template("menu_page.html", menu_items=menu_data)

# Route for handling order
@app.route("/order", methods=["POST"])
def place_order():
    item_name = request.json.get('item_name')
    quantity = request.json.get('quantity')
    order_data = {"Item__c": item_name, "Quantity__c": quantity}
    sf.Order__c.create(order_data)
    return jsonify({"success": True, "message": f"Order for {item_name} placed successfully."})

# Route to handle the cart
@app.route("/cart", methods=["GET"])
def cart():
    cart_items = []  # Placeholder for cart items
    return render_template("cart_page.html", cart_items=cart_items)

# Route for the order summary page
@app.route("/order-summary", methods=["GET"])
def order_summary():
    order_details = []  # Placeholder for order details
    return render_template("order_summary.html", order_details=order_details)

@app.route("/transcribe", methods=["POST"])
def transcribe():
    if "audio" not in request.files:
        print("No audio file provided")
        return jsonify({"error": "No audio file provided"}), 400

    audio_file = request.files["audio"]
    input_audio_path = os.path.join("static", "temp_input.wav")
    output_audio_path = os.path.join("static", "temp.wav")
    audio_file.save(input_audio_path)

    try:
        # Convert to WAV
        convert_to_wav(input_audio_path, output_audio_path)

        # Check for silence
        if is_silent_audio(output_audio_path):
            return jsonify({"error": "No speech detected. Please try again."}), 400
        else:
            print("Audio contains speech, proceeding with transcription.")

        # Use Whisper ASR model for transcription
        result = None
        retry_attempts = 3
        for attempt in range(retry_attempts):
            try:
                result = pipeline("automatic-speech-recognition", model="openai/whisper-small", device=0 if torch.cuda.is_available() else -1, config=config)
                print(f"Transcribed text: {result['text']}")
                break
            except requests.exceptions.ReadTimeout:
                print(f"Timeout occurred, retrying attempt {attempt + 1}/{retry_attempts}...")
                time.sleep(5)

        if result is None:
            return jsonify({"error": "Unable to transcribe audio after retries."}), 500

        transcribed_text = result["text"].strip().capitalize()
        print(f"Transcribed text: {transcribed_text}")

        # Extract name, email, and phone number from the transcribed text
        parts = transcribed_text.split()
        name = parts[0] if len(parts) > 0 else "Unknown Name"
        email = parts[1] if '@' in parts[1] else "unknown@domain.com"
        phone_number = parts[2] if len(parts) > 2 else "0000000000"
        print(f"Parsed data - Name: {name}, Email: {email}, Phone Number: {phone_number}")

        # Confirm details before submission
        confirmation = f"Is this correct? Name: {name}, Email: {email}, Phone: {phone_number}"
        generate_audio_prompt(confirmation, "confirmation.mp3")

        # Simulate confirmation via user action
        user_confirms = True  # Assuming the user confirms, you can replace this with actual user input logic

        if user_confirms:
            # Create record in Salesforce
            salesforce_response = create_salesforce_record(name, email, phone_number)

            # Log the Salesforce response
            print(f"Salesforce record creation response: {salesforce_response}")

            # Check if the response contains an error
            if "error" in salesforce_response:
                print(f"Error creating record in Salesforce: {salesforce_response['error']}")
                return jsonify(salesforce_response), 500

            return jsonify({"text": transcribed_text, "salesforce_record": salesforce_response})

    except Exception as e:
        print(f"Error in transcribing or processing: {str(e)}")
        return jsonify({"error": f"Speech recognition error: {str(e)}"}), 500

# Start Production Server
if __name__ == "__main__":
    serve(app, host="0.0.0.0", port=7860)