# From https://docs.streamlit.io/develop/tutorials/multipage/st.page_link-nav
import streamlit as st
import os
import project_config

def authenticated_menu():

    # Insert profile picture
    pfp_path = str(project_config.MEDIA_DIR / 'pfp' / f"{st.session_state.profile_pic}.png")
    if not os.path.exists(pfp_path):
        pfp_path = str(project_config.MEDIA_DIR / 'pfp' / "gravity.png")
    st.sidebar.image(pfp_path, use_column_width=True)
    st.sidebar.markdown("---")

    # Show a navigation menu for authenticated users
    # st.sidebar.page_link("app.py", label="Switch Accounts", icon="🔒")
    st.sidebar.page_link("pages/about.py", label="About", icon="📖")
    st.sidebar.page_link("pages/input.py", label="Input", icon="💡")
    st.sidebar.page_link("pages/predict.py", label="Predict", icon="🔍",
                         disabled=("query" not in st.session_state))
    st.sidebar.page_link("pages/validate.py", label="Validate", icon="✅",
                         disabled=("query" not in st.session_state))
    # st.sidebar.page_link("pages/explore.py", label="Explore", icon="🔍")
    if st.session_state.role in ["admin"]:
        st.sidebar.page_link("pages/admin.py", label="Manage Users", icon="🔧")

    # Show the logout button
    st.sidebar.markdown("---")
    st.sidebar.button("Log Out", on_click=lambda: st.session_state.clear())


def unauthenticated_menu():

    # Show a navigation menu for unauthenticated users
    st.sidebar.page_link("app.py", label="Log In", icon="🔒")


def menu():
    # Determine if a user is logged in or not, then show the correct navigation menu
    if "role" not in st.session_state or st.session_state.role is None:
        unauthenticated_menu()
        return
    authenticated_menu()


def menu_with_redirect():
    # Redirect users to the main page if not logged in, otherwise continue to
    # render the navigation menu
    if "role" not in st.session_state or st.session_state.role is None:
        st.switch_page("app.py")
    menu()