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import streamlit as st
import os
from dotenv import load_dotenv
from views.continue_survey import continue_survey_screen
from db.crud import read

load_dotenv()
VALIDATION_CODE = os.getenv("VALIDATION_CODE")


def validate_username(username: str) -> bool:
    return bool(username.strip())


def validate_code(input_code: str) -> bool:
    """Validate the entered code against the hardcoded validation code"""
    return input_code.strip() == VALIDATION_CODE


def welcome_screen():
    """Display the welcome screen and direct users accordingly."""
    st.title("Welcome to the Feedback Survey")

    username_input = st.text_input("Enter your First name and press TAB:")
    validation_code_input = st.text_input("Enter the validation code to proceed and press ENTER:")

    next_button = st.button("Next")

    if (username_input and validation_code_input) or next_button:
        if validate_username(username_input) and validate_code(validation_code_input):
            st.session_state.username = username_input

            # # Check if user progress exists in Firebase
            # saved_state = read(username_input)
            #
            # if saved_state:
            #     # Show continue survey screen for returning users
            #     st.success("Previous progress found.")
            #     continue_survey_screen()
            # else:
            #     # Start fresh for new users
            #     st.success("Starting a new survey.")
            #     st.session_state.current_index = 0
            #     st.session_state.responses = []
            #     st.rerun()
        else:
            if not validate_username(username_input):
                st.warning("Invalid Prolific ID. Please check and try again.")
            if not validate_code(validation_code_input):
                st.warning("Invalid validation code. Please check and try again.")