Being towards death

# Import required libraries
import streamlit as st
import csv
from cryptography.fernet import Fernet
from cryptography.fernet import InvalidToken

# Custom encryption key (hardcoded)
CUSTOM_ENCRYPTION_KEY = b'u7wGgNdDFefqpr_kGxb8wJf6XRVsRwvb3QgITsD5Ft4='  
# If you plan to use this script on a shared platform, make sure to keep this key in a separate secure file.

# Function to encrypt password
def encrypt_password(password):
    cipher_suite = Fernet(CUSTOM_ENCRYPTION_KEY)
    encrypted_password = cipher_suite.encrypt(password.encode())  # Encrypt the password after encoding
    return encrypted_password

# Function to decrypt password
def decrypt_password(encrypted_password):
    if isinstance(encrypted_password, bytes):  # Check if the encrypted password is of bytes type
        try:
            cipher_suite = Fernet(CUSTOM_ENCRYPTION_KEY)
            decrypted_password = cipher_suite.decrypt(encrypted_password)  # Decrypt
            return decrypted_password.decode()  # Decode bytes to string
        except InvalidToken:
            return "Invalid Token"  # Return invalid token message if the key is incorrect
    else:
        return None

# Function to save website name and password to CSV file
def save_credentials(website_name, password):
    encrypted_password = encrypt_password(password)  # Encrypt the password first
    with open('credentials.csv', 'a', newline='') as csvfile:
        writer = csv.writer(csvfile)
        writer.writerow([website_name, encrypted_password.decode()])  # Store the encrypted password as a string after decoding

# Function to retrieve password from CSV file
def retrieve_password(website_name):
    with open('credentials.csv', 'r') as csvfile:
        reader = csv.reader(csvfile)
        for row in reader:
            if row[0] == website_name:
                encrypted_password = row[1].encode()  # Re-encode to bytes
                return encrypted_password
    return None

# Create web interface using Streamlit
st.title("Password Manager")

# Input fields for entering website name and password
website_name = st.text_input("Enter website name:")
password = st.text_input("Enter password:", type="password")

# Save button to save website name and password
if st.button("Save"):
    if website_name and password:
        save_credentials(website_name, password)
        st.success("Website name and password have been successfully saved.")
    else:
        st.error("Please fill in all fields.")

# Retrieve button to retrieve password
if st.checkbox("Retrieve Password"):
    website_name = st.selectbox("Select website name:", options=[""] + [row[0] for row in csv.reader(open('credentials.csv', 'r'))])
    key = st.text_input("Enter your encryption key:", type="password")
    if st.button("Retrieve Password"):
        if key == str(CUSTOM_ENCRYPTION_KEY.decode()):
            if website_name:
                encrypted_password = retrieve_password(website_name)
                if encrypted_password:
                    decrypted_password = decrypt_password(encrypted_password)
                    st.success(f"The password for website **{website_name}** -> **{decrypted_password}**")
                else:
                    st.error("Password not found in the database.")
        elif key == "":
            pass
        else:
            st.error("Invalid encryption key!")

# Import smtplib library for email transmission
import smtplib
# Import ssl library to establish a secure connection
import ssl

# SMTP server details
smtp_server = 'smtp.gmail.com'  # The SMTP server address for Gmail
smtp_port = 465  # The port number used, Gmail's SSL port is 465

# Sender and receiver details
from_address = 'yuhualong Shop'  # Sender's address or name
to_address = ['', '']  # List of recipients, can add multiple recipient email addresses

# Authentication information
username = ''  # Sender's email account
password = ''  # Sender's email password

# Email content details
subject = '🎉 Exclusive Offer! Enjoy a 10% discount on your next purchase'
body = '''\
Dear Customer,

As our valued customer, to express our gratitude, we are offering you an exclusive discount on your next purchase. Use the discount code below at checkout to enjoy a 10% discount on your order:

Discount Code: DISCOUNT888

Whether you are looking for stylish apparel, trendy accessories, or high-quality products, now is the best time to shop and save! Explore our latest collection and treat yourself to something special. Hurry! This offer is time-limited. Don't miss the chance to save on your favorite items.

Shop now: https://xyz.com

Thank you for choosing yuhualong Shop. We look forward to serving you again soon!

Best wishes,
yuhualong Shop
'''

# Create an SSL/TLS context
context = ssl.create_default_context()

# Connect via SMTP server using SSL/TLS
with smtplib.SMTP_SSL(smtp_server, smtp_port, context=context) as server:
    # Enable debug level to print server response information
    server.set_debuglevel(1)
    # Log in to the SMTP server
    server.login(username, password)
    # Create email message
    message = f'From: {from_address}\r\nSubject: {subject}\r\nTo: {", ".join(to_address)}\r\n\r\n{body}'
    message = message.encode()  # Convert message to byte format
    # Send email
    server.sendmail(from_address, to_address, message)