"""
FILE: app/frontend/ui_sidebar.py
DESCRIPTION: Rendert die Sidebar. Steuert den Modus-Wechsel (Chat/Editor/Graph) und globale Settings (Top-K).
VERSION: 2.6.0
STATUS: Active
DEPENDENCIES: streamlit, ui_utils, ui_config
LAST_ANALYSIS: 2025-12-15
"""

import streamlit as st
from ui_utils import load_history_from_logs
from ui_config import HISTORY_FILE

def render_sidebar():
    with st.sidebar:
        st.title("🧠 mindnet")
        st.caption("v2.6 | WP-19 Graph View")
        
        if "sidebar_mode_selection" not in st.session_state:
            st.session_state["sidebar_mode_selection"] = "💬 Chat"
            
        mode = st.radio(
            "Modus", 
            [
                "💬 Chat", 
                "📝 Manueller Editor", 
                "🕸️ Graph (Agraph)", 
                "🕸️ Graph (Cytoscape)"  # <-- Neuer Punkt
            ], 
            key="sidebar_mode_selection"
        )
        
        st.divider()
        st.subheader("⚙️ Settings")
        top_k = st.slider("Quellen (Top-K)", 1, 10, 5)
        explain = st.toggle("Explanation Layer", True)
        
        st.divider()
        st.subheader("🕒 Verlauf")
        for q in load_history_from_logs(HISTORY_FILE, 8):
            if st.button(f"🔎 {q[:25]}...", key=f"hist_{q}", use_container_width=True):
                st.session_state.messages.append({"role": "user", "content": q})
                st.rerun()
                
    return mode, top_k, explain