# import sys
# from pathlib import Path
# import os
# import gdown
# import streamlit as st

# # Set page config - must be first Streamlit command
# st.set_page_config(
#     page_title="TrueCheck - Fake News Detection",
#     page_icon="📰",
#     layout="wide"
# )

# MODEL_PATH = "models/saved/final_model.pt"
# # You need to replace this with the direct download link of your model file
# # To get the direct link: Right-click your model file in Google Drive -> Get link -> Make sure it's set to "Anyone with the link can view"
# # Then replace the file ID in the URL below
# GOOGLE_DRIVE_FILE_ID = "1xhYKuC5_Yri3mm3Ejt-SpB2WAVUTJvc_"  # Replace with your actual file ID
# GOOGLE_DRIVE_URL = f"https://drive.google.com/uc?id={GOOGLE_DRIVE_FILE_ID}"

# @st.cache_resource
# def download_model():
#     """Download model from Google Drive if not exists."""
#     if not os.path.exists(MODEL_PATH):
#         os.makedirs(os.path.dirname(MODEL_PATH), exist_ok=True)
#         with st.spinner("Downloading model from Google Drive..."):
#             try:
#                 gdown.download(GOOGLE_DRIVE_URL, MODEL_PATH, quiet=False)
#                 st.success("Model downloaded successfully!")
#             except Exception as e:
#                 st.error(f"Failed to download model: {str(e)}")
#                 st.error("Please check your Google Drive link and make sure the file is publicly accessible.")
#                 return False
#     return True

# # Add src directory to Python path
# src_path = Path(__file__).parent / "src"
# sys.path.append(str(src_path))

# if __name__ == "__main__":
#     # Download model first
#     if download_model():
#         # Import and run the main app
#         from src.app import main
#         main()
#     else:
#         st.error("Cannot start the application without the model file.") 


import sys
from pathlib import Path
import os
import gdown
import streamlit as st

# Set page config - must be first Streamlit command
st.set_page_config(
    page_title="TrueCheck - Fake News Detection",
    page_icon="📰",
    layout="wide",
    initial_sidebar_state="expanded"
)

# Custom CSS for modern styling
st.markdown("""
<style>
    @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');
    
    body {
        font-family: 'Poppins', sans-serif;
        background-color: #FFFFFF;
        color: #333333;
    }
    
    .sidebar .sidebar-content {
        background-color: #F4F7FA;
        padding: 1rem;
    }
    
    .stButton>button {
        background-color: #4B5EAA;
        color: white;
        border-radius: 8px;
        padding: 0.5rem 1rem;
        font-weight: 600;
        transition: background-color 0.3s;
    }
    
    .stButton>button:hover {
        background-color: #3A4A8C;
    }
    
    .stTextArea textarea {
        border: 1px solid #E0E0E0;
        border-radius: 8px;
        padding: 1rem;
    }
    
    .hero-section {
        background-color: #F4F7FA;
        padding: 2rem;
        border-radius: 12px;
        margin-bottom: 2rem;
    }
    
    .flash-message {
        padding: 1rem;
        border-radius: 8px;
        margin-bottom: 1rem;
        font-weight: 600;
    }
    
    .success-message {
        background-color: #E6F4EA;
        color: #2E7D32;
    }
    
    .error-message {
        background-color: #FEE2E2;
        color: #B71C1C;
    }
</style>
""", unsafe_allow_html=True)

MODEL_PATH = "models/saved/final_model.pt"
GOOGLE_DRIVE_FILE_ID = "1xhYKuC5_Yri3mm3Ejt-SpB2WAVUTJvc_"
GOOGLE_DRIVE_URL = f"https://drive.google.com/uc?id={GOOGLE_DRIVE_FILE_ID}"

@st.cache_resource
def download_model():
    """Download model from Google Drive if not exists."""
    if not os.path.exists(MODEL_PATH):
        os.makedirs(os.path.dirname(MODEL_PATH), exist_ok=True)
        with st.spinner("Downloading model from Google Drive..."):
            try:
                gdown.download(GOOGLE_DRIVE_URL, MODEL_PATH, quiet=False)
                st.markdown('<div class="flash-message success-message">Model downloaded successfully!</div>', unsafe_allow_html=True)
            except Exception as e:
                st.markdown(f'<div class="flash-message error-message">Failed to download model: {str(e)}</div>', unsafe_allow_html=True)
                st.markdown('<div class="flash-message error-message">Please check your Google Drive link and make sure the file is publicly accessible.</div>', unsafe_allow_html=True)
                return False
    return True

# Add src directory to Python path
src_path = Path(__file__).parent / "src"
sys.path.append(str(src_path))

# Sidebar navigation
st.sidebar.title("TrueCheck")
st.sidebar.markdown("---")
page = st.sidebar.radio(
    "Navigate",
    ["Home", "Team", "About", "Terms of Use", "Privacy Policy"],
    label_visibility="collapsed"
)

# SVG icon for sidebar
st.sidebar.markdown("""
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#4B5EAA" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="margin-bottom: 1rem;">
    <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path>
    <polyline points="9 22 9 12 15 12 15 22"></polyline>
</svg>
""", unsafe_allow_html=True)

if __name__ == "__main__":
    if page == "Home":
        if download_model():
            from src.app import main
            main()
        else:
            st.markdown('<div class="flash-message error-message">Cannot start the application without the model file.</div>', unsafe_allow_html=True)
    elif page == "Team":
        from src.team import main
        main()
    elif page == "About":
        from src.about import main
        main()
    elif page == "Terms of Use":
        from src.terms_of_use import main
        main()
    elif page == "Privacy Policy":
        from src.privacy_policy import main
        main()