import streamlit as st




# --- Page Configuration (Optional but good practice) ---
st.set_page_config(
    page_title="BIOLAB",
    page_icon=":computer:",
    layout="wide",
    #initial_sidebar_state="collapsed"
)


hardcodedlogin_user={
    
    "usernames":["admin"],
    "passwords":["123"] 

}



def authenticate_user(username,password):
    
    if username in hardcodedlogin_user["usernames"] and password in hardcodedlogin_user["passwords"]:
        return True
    else:
        return False
        

def LOGIN():
    st.title("🔐 Authentication System")
    
    tab1, tab2 = st.tabs(["Login"])
    
    with tab1:
        st.subheader("Login to the application")
        
        with st.form("login_form"):
            username = st.text_input("Username")
            password = st.text_input("Password", type="password")
            login_button = st.form_submit_button("Login")
            
            if login_button:
                if username and password:
                    status = authenticate_user(username, password)
                    if status==True:
                        st.session_state.logged_in = True
                        st.session_state.username = username
                        st.rerun()
                    else:
                        st.error(message)
                else:
                    st.warning("Please enter both username and password")



  

def APP():

    tab1, tab2, tab3 = st.tabs(["BIOLAB", "OPERATIONS", "OUTPUT"])

    with tab1:
    
        console_container = st.container(height=150, border=True)

        with console_container:
            st.code(">>> System Online...", language="bash") # Use st.code for a console look

        user_input = st.text_input(
            "Protein Engineering Query",
            placeholder="Type something lengthy here... It could be code, a story, or just a lot of thoughts."
        )
        if st.button("Execute", use_container_width=True):
            if user_input:
                # Simulate processing and append to the console
                with console_container:
                    st.markdown(f"**>>> Processing input...**")
                    st.code(f"Input received ({len(user_input)} characters):\n{user_input[:200]}...", language="text") # Show first 200 chars
                    st.success("Task completed!")
            else:
                with console_container:
                    st.warning(">>> Please enter some text before processing.")


    with tab2:
        st.markdown("### Operations")



    with tab3:
        st.markdown("### Output")



#Route to appropriate page based on login status
if st.session_state.logged_in:
        APP()
    else:
        LOGIN()