app/main.py

import streamlit as st
import os
import glob
import sys
import numpy as np
import plotly.graph_objects as go
from sklearn.linear_model import LinearRegression

# Add the parent directory to the Python path
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

# Import the login component
from app.components.login import login

# Import week pages
from app.pages import week_1
from app.pages import week_2
from app.pages import week_3

# Page configuration
st.set_page_config(
    page_title="Data Science Course App",
    page_icon="📚",
    layout="wide",
    initial_sidebar_state="expanded"
)

# Custom CSS
def load_css():
    try:
        with open('assets/style.css') as f:
            st.markdown(f'<style>{f.read()}</style>', unsafe_allow_html=True)
    except FileNotFoundError:
        # Fallback for Streamlit Cloud deployment
        st.markdown("""
        <style>
        /* Main title styling */
        .main .block-container h1 {
            color: #2c3e50;
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        
        /* Subtitle styling */
        .main .block-container h2 {
            color: #34495e;
            font-size: 1.8rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        
        /* Sidebar styling */
        .sidebar .sidebar-content {
            background-color: #f8f9fa;
        }
        
        /* Button styling */
        .stButton>button {
            width: 100%;
            border-radius: 5px;
            height: 3em;
            margin: 0.5em 0;
            background-color: #3498db;
            color: white;
            border: none;
        }
        
        .stButton>button:hover {
            background-color: #2980b9;
        }
        
        /* Progress bar styling */
        .stProgress > div > div {
            background-color: #2ecc71;
        }
        
        /* Info box styling */
        .stAlert {
            border-radius: 5px;
            padding: 1rem;
            margin: 1rem 0;
        }
        
        /* Code block styling */
        .stCodeBlock {
            background-color: #f8f9fa;
            border-radius: 5px;
            padding: 1rem;
            margin: 1rem 0;
        }
        </style>
        """, unsafe_allow_html=True)

# Initialize session state
if 'current_week' not in st.session_state:
    st.session_state.current_week = 1
if 'logged_in' not in st.session_state:
    st.session_state.logged_in = False

# Sidebar navigation
def sidebar_navigation():
    with st.sidebar:
        st.title("Course Navigation")
        
        # Show username if logged in
        if st.session_state.logged_in:
            st.write(f"Welcome, {st.session_state.username}!")
            
            # Debug button to show current week
            if st.session_state.username == "admin":
                if st.button("Debug: Show Current Week"):
                    st.write(f"Current week: {st.session_state.current_week}")
            
            # Logout button
            if st.button("Logout"):
                st.session_state.logged_in = False
                st.session_state.username = None
                st.rerun()
        
        st.markdown("---")
        st.subheader("Course Progress")
        progress = st.progress(st.session_state.current_week / 10)
        st.write(f"Week {st.session_state.current_week} of 10")
        
        st.markdown("---")
        st.subheader("Quick Links")
        for week in range(1, 11):
            if st.button(f"Week {week}", key=f"week_{week}"):
                st.session_state.current_week = week
                st.rerun()

def show_week_content():
    # Debug print to show current week
    st.write(f"Debug: Current week is {st.session_state.current_week}")
    
    if st.session_state.current_week == 1:
        week_1.show()
    elif st.session_state.current_week == 2:
        week_2.show()
    elif st.session_state.current_week == 3:
        week_3.show()
    else:
        st.warning("Content for this week is not yet available.")

# Main content
def main():
    # Check if user is logged in
    if not st.session_state.logged_in:
        # Show login page
        login()
        return
    
    # User is logged in, show course content
    if st.session_state.current_week in [1, 2, 3]:
        show_week_content()
    else:
        st.title("Data Science Research Paper Course")
        st.markdown("""
        ## Welcome to the Data Science Research Paper Course! 📚
        
        This section has not bee released yet.
        """)

if __name__ == "__main__":
    load_css()
    sidebar_navigation()
    main()