import os
import hashlib
import streamlit as st
import textflowsms as tf


# Function to ensure phone number is correctly formatted
def format_phone_number(phone_number):
    if len(phone_number) == 10 and not phone_number.startswith('+'):
        return '+1' + phone_number
    return phone_number

# Initialize session state variables if they don't exist
if 'phone_number' not in st.session_state:
    st.session_state['phone_number'] = '+19522583980'  # Default phone number
if 'password' not in st.session_state:
    st.session_state['password'] = ''
if 'hash' not in st.session_state:
    st.session_state['hash'] = ''

# Function to hash a password
def hash_password(password):
    return hashlib.sha256(password.encode()).hexdigest()[:6]

# Function to append to the log file or create it if it doesn't exist
def append_to_log(phone_number):
    if not os.path.exists('LoggedConfirmations.txt'):
        with open('LoggedConfirmations.txt', 'w') as log_file:
            log_file.write(f"{phone_number}\n")
    else:
        with open('LoggedConfirmations.txt', 'a') as log_file:
            log_file.write(f"{phone_number}\n")

# Mobile Phone field with emoji
user_phone_input = st.sidebar.text_input("📱 Mobile Phone", value=st.session_state.get('phone_number', ''))

# Password field with emoji
password_input = st.sidebar.text_input("🔑 Set Password", type='password')

# Button to save the phone number and password
if st.sidebar.button('💾 Save Settings'):
    st.session_state['phone_number'] = format_phone_number(user_phone_input)
    st.session_state['password'] = hash_password(password_input)
    st.sidebar.success("Settings saved successfully!")

# Function to send verification SMS
def send_verification_sms():
    
    # Load the API key from an environment variable
    api_key = os.getenv('API_KEY')
    tf.useKey(api_key)
    #tf.sendSMS("+19522583980", "Test 2")

    base_url = "https://huggingface.co/spaces/awacke1/RT-SMS-Phone-Verify"
    # Correct the sendSMS function call
    #phone=st.session_state['phone_number']
    phone=user_phone_input
    st.write('Sending SMS to phone number ' + phone)
    
    hashmessage=f"Verify here: {base_url}?hash={st.session_state['password']}"
    st.write('Hash message: ' + hashmessage)
    
    result = tf.sendSMS(phone, hashmessage)
    
    if(result.ok):
        print(result.data)
        st.sidebar.success("Verification link sent via SMS")
    else:
      print(result.message)

    
# Check if the hash parameter is provided
query_params = st.experimental_get_query_params()
if 'hash' in query_params:
    st.session_state['hash'] = query_params['hash'][0]
    append_to_log(st.session_state['phone_number'])
    st.write("✅ User has authenticated using text")

# Show verification button if hash is not in session
if not st.session_state['hash']:
    if st.sidebar.button('📨 Send Verify Request'):
        send_verification_sms()

# Display history log
st.write("## 📜 Verification History")
if os.path.exists('LoggedConfirmations.txt'):
    with open('LoggedConfirmations.txt', 'r') as log_file:
        history = log_file.read()
    st.text(history)
else:
    st.write("No verification history found.")