frontend/src/components/SidePane.tsx

import React from 'react';
import { useNavigate, useLocation } from 'react-router-dom';
import { Node, Edge } from 'reactflow';
import styles from './SidePane.module.css';
import MindMapList from './MindMapList';
import axios from '../utils/axios';
import { MindMapData } from '../utils/jsonUtils';

// Icons with improved styling
const HomeIcon = () => (
  <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
    <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z" />
    <polyline points="9 22 9 12 15 12 15 22" />
  </svg>
);

const MindMapIcon = () => (
  <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
    <circle cx="12" cy="12" r="10" />
    <path d="M12 2v20M2 12h20" />
    <path d="M12 2a10 10 0 0 1 10 10M12 22a10 10 0 0 1-10-10" />
  </svg>
);

const LogoutIcon = () => (
  <svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
    <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4" />
    <polyline points="16 17 21 12 16 7" />
    <line x1="21" y1="12" x2="9" y2="12" />
  </svg>
);

const ChevronIcon = ({ isCollapsed }: { isCollapsed: boolean }) => (
  <svg
    width="16"
    height="16"
    viewBox="0 0 24 24"
    fill="none"
    stroke="currentColor"
    strokeWidth="2"
    strokeLinecap="round"
    strokeLinejoin="round"
    style={{
      transform: isCollapsed ? 'rotate(180deg)' : 'rotate(0deg)',
      transition: 'transform 0.3s ease',
    }}
  >
    <polyline points="15 18 9 12 15 6" />
  </svg>
);

interface SidePaneProps {
  onSelectMindMap: (mindMap: MindMapData) => void;
  onNewMindMap: () => void;
  isCollapsed: boolean;
  setIsCollapsed: (collapsed: boolean) => void;
  onDeleteMindMap: (id: string) => void;
}

const SidePane: React.FC<SidePaneProps> = ({ onSelectMindMap, onNewMindMap, isCollapsed, setIsCollapsed, onDeleteMindMap }) => {
  const navigate = useNavigate();
  const location = useLocation();
  const isEditor = location.pathname === '/editor';

  const handleLogout = async () => {
    try {
      await axios.post('/logout');
    } catch (error) {
      // Ignore error, proceed to clear token and redirect
    }
    localStorage.removeItem('token');
    navigate('/');
  };

  const handleNavigation = (path: string) => (e: React.MouseEvent) => {
    e.preventDefault();
    try {
      navigate(path);
    } catch (error) {
      console.error('Navigation error:', error);
      // Fallback to window.location if navigation fails
      window.location.href = path;
    }
  };

  return (
    <div className={`${styles.sidePane} ${isCollapsed ? styles.collapsed : styles.expanded}`}>
      <button
        className={styles.toggleButton}
        onClick={() => setIsCollapsed(!isCollapsed)}
        aria-label={isCollapsed ? 'Expand sidebar' : 'Collapse sidebar'}
      >
        <ChevronIcon isCollapsed={isCollapsed} />
      </button>

      <div className={styles.menuItems}>
        <a
          href="/"
          className={`${styles.menuItem} ${location.pathname === '/' ? styles.active : ''}`}
          onClick={handleNavigation('/')}
        >
          <span className={styles.icon}>
            <HomeIcon />
          </span>
          <span className={styles.label}>Home</span>
        </a>

        <a
          href="/editor"
          className={`${styles.menuItem} ${location.pathname === '/editor' ? styles.active : ''}`}
          onClick={handleNavigation('/editor')}
        >
          <span className={styles.icon}>
            <MindMapIcon />
          </span>
          <span className={styles.label}>Mind Map</span>
        </a>

        {isEditor && (
          <MindMapList
            isCollapsed={isCollapsed}
            onSelectMindMap={onSelectMindMap}
            onNewMindMap={onNewMindMap}
            onDeleteMindMap={onDeleteMindMap}
          />
        )}
      </div>

      <div className={`${styles.logoutButton} ${isCollapsed ? styles.collapsed : ''}`}>
        <button onClick={handleLogout} aria-label="Logout">
          <span className={styles.icon}>
            <LogoutIcon />
          </span>
          <span className={styles.label}>Logout</span>
        </button>
      </div>
    </div>
  );
};

export default SidePane;