import React from 'react';
import { useNavigate, useLocation, Link } from 'react-router-dom';
import {
  Home,
  Users,
  Disc,
  Radio,
  Settings,
  LogOut,
  ShoppingBag,
  GraduationCap,
  BarChart2,
  Shield,
  Box,
  MessageSquare,
  Cloud,
  Layers,
  Cpu,
  Heart,
  ListMusic,
  CreditCard,
  DollarSign,
  Terminal,
  ChevronLeft,
  ChevronRight,
  Menu,
} from 'lucide-react';
import { NavItem } from '../../types';
import { useAuthStore } from '@/features/auth/store/authStore';
import { useUIStore } from '@/stores/ui';
import { cn } from '@/lib/utils';

interface SidebarProps {
  currentView?: string;
  onNavigate?: (viewId: string) => void;
  onLogout?: () => void;
}

const navItems: { section: string; items: NavItem[] }[] = [
  {
    section: 'My Studio',
    items: [
      {
        id: 'dashboard',
        label: 'Command Center',
        icon: <Home className="w-4 h-4" />,
      },
      {
        id: 'studio',
        label: 'Cloud Files',
        icon: <Cloud className="w-4 h-4" />,
      },
      { id: 'tracks', label: 'Projects', icon: <Layers className="w-4 h-4" /> },
      { id: 'gear', label: 'Gear Locker', icon: <Box className="w-4 h-4" /> },
      {
        id: 'analytics',
        label: 'Performance',
        icon: <BarChart2 className="w-4 h-4" />,
      },
    ],
  },
  {
    section: 'Veza Network',
    items: [
      {
        id: 'social',
        label: 'Community Feed',
        icon: <Users className="w-4 h-4" />,
      },
      {
        id: 'marketplace',
        label: 'Marketplace',
        icon: <ShoppingBag className="w-4 h-4" />,
      },
      {
        id: 'live',
        label: 'Live Sessions',
        icon: <Radio className="w-4 h-4 text-kodo-red" />,
        badge: 3,
      },
      {
        id: 'chat',
        label: 'Channels',
        icon: <MessageSquare className="w-4 h-4" />,
        badge: 12,
      },
      {
        id: 'education',
        label: 'Academy',
        icon: <GraduationCap className="w-4 h-4" />,
      },
    ],
  },
  {
    section: 'Commerce',
    items: [
      {
        id: 'sell',
        label: 'Seller Dashboard',
        icon: <DollarSign className="w-4 h-4" />,
      },
      {
        id: 'wishlist',
        label: 'Wishlist',
        icon: <Heart className="w-4 h-4" />,
      },
      {
        id: 'purchases',
        label: 'Purchases',
        icon: <CreditCard className="w-4 h-4" />,
      },
    ],
  },
  {
    section: 'Library',
    items: [
      {
        id: 'playlists',
        label: 'Playlists',
        icon: <ListMusic className="w-4 h-4" />,
      },
      { id: 'queue', label: 'Play Queue', icon: <Disc className="w-4 h-4" /> },
    ],
  },
  {
    section: 'System',
    items: [
      {
        id: 'developer',
        label: 'Developer API',
        icon: <Terminal className="w-4 h-4" />,
      },
      {
        id: 'admin',
        label: 'Admin Panel',
        icon: <Shield className="w-4 h-4" />,
      },
    ],
  },
];

// Mapping des IDs de navigation vers les routes React Router
const routeMap: Record<string, string> = {
  dashboard: '/dashboard',
  studio: '/library',
  tracks: '/library',
  gear: '/gear',
  analytics: '/analytics',
  social: '/social',
  marketplace: '/marketplace',
  live: '/live',
  chat: '/chat',
  education: '/education',
  sell: '/marketplace', // Redirige vers marketplace pour l'instant
  wishlist: '/marketplace', // Redirige vers marketplace pour l'instant
  purchases: '/marketplace', // Redirige vers marketplace pour l'instant
  playlists: '/library', // Redirige vers library pour l'instant (playlists sera dans library)
  queue: '/queue',
  developer: '/developer',
  admin: '/admin',
  settings: '/settings',
};

export const Sidebar: React.FC<SidebarProps> = ({
  currentView,
  onNavigate,
  onLogout,
}) => {
  const navigate = useNavigate();
  const location = useLocation();
  const { logout } = useAuthStore();
  const { sidebarOpen, setSidebarOpen } = useUIStore();

  const handleMobileNav = () => {
    if (window.innerWidth < 1024) {
      // lg breakpoint
      setSidebarOpen(false);
    }
  };

  // Déterminer la vue actuelle depuis l'URL
  const activeView =
    currentView ||
    Object.keys(routeMap).find((key) => routeMap[key] === location.pathname) ||
    'dashboard';

  const handleLogout = () => {
    logout();
    navigate('/login');
    // Appeler onLogout si fourni (pour compatibilité)
    if (onLogout) {
      onLogout();
    }
  };

  return (
    <>
      {/* Mobile Backdrop */}
      {sidebarOpen && (
        <div
          className="fixed inset-0 bg-black/60 backdrop-blur-sm lg:hidden"
          style={{ zIndex: 'var(--z-modal-backdrop)' }}
          onClick={() => setSidebarOpen(false)}
          aria-hidden="true"
        />
      )}

      <aside
        role="navigation"
        aria-label="Sidebar"
        className={cn(
          'fixed left-6 bottom-6 glass-hud rounded-2xl border-white/10 flex flex-col transition-all duration-500 ease-in-out hud-corner',
          // FIX: Header fait h-16 (64px) + mt-4 (16px) = 80px, donc top-20 (80px) au lieu de top-24
          'top-20',
          sidebarOpen ? 'w-64 translate-x-0 opacity-100' : '-translate-x-full lg:translate-x-0 lg:opacity-100 lg:w-20',
        )}
        style={{ zIndex: 90 }}
      // FIX: S'assurer que la sidebar ne masque pas le contenu principal
      >
        {/* Hub Header Integration avec bouton toggle */}
        <div className="p-6 border-b border-white/5 flex items-center gap-4">
          <div className="w-8 h-8 rounded bg-kodo-steel/20 flex items-center justify-center border border-kodo-steel/30 animate-pulse-glow">
            <Cpu className="w-5 h-5 text-kodo-steel" />
          </div>
          {sidebarOpen && (
            <div className="animate-fadeIn flex-1">
              <h2 className="text-xs font-mono font-bold text-white tracking-widest uppercase">
                System Hub
              </h2>
              <div className="flex items-center gap-1.5 mt-0.5">
                <span className="w-1 h-1 rounded-full bg-kodo-lime animate-pulse" />
                <span className="text-[10px] font-mono text-kodo-lime opacity-80 uppercase">
                  Active
                </span>
              </div>
            </div>
          )}
          {/* Bouton toggle pour plier/déplier le menu */}
          <button
            onClick={() => setSidebarOpen(!sidebarOpen)}
            className="ml-auto p-1.5 rounded-lg hover:bg-white/5 transition-colors text-kodo-secondary hover:text-white focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-kodo-cyan focus-visible:ring-offset-2 focus-visible:ring-offset-kodo-void"
            aria-label={sidebarOpen ? 'Collapse sidebar' : 'Expand sidebar'}
            title={sidebarOpen ? 'Collapse sidebar' : 'Expand sidebar'}
          >
            {sidebarOpen ? (
              <ChevronLeft className="w-4 h-4" />
            ) : (
              <ChevronRight className="w-4 h-4" />
            )}
          </button>
        </div>

        <div className="flex-1 overflow-y-auto custom-scrollbar p-4 space-y-6 mt-4">
          {navItems.map((group, idx) => (
            <div key={idx} className="mb-4">
              {sidebarOpen && (
                <h3 className="text-[9px] font-mono font-bold text-kodo-steel/60 uppercase tracking-[0.2em] mb-3 px-4 flex items-center gap-2 animate-fadeIn">
                  {group.section}
                </h3>
              )}
              <div className="space-y-1">
                {group.items.map((item) => {
                  const route = routeMap[item.id] || '/dashboard';
                  const isActive = activeView === item.id;

                  return (
                    <Link
                      key={item.id}
                      to={route}
                      title={!sidebarOpen ? item.label : undefined}
                      onClick={() => {
                        handleMobileNav();
                        if (onNavigate) {
                          onNavigate(item.id);
                        }
                      }}
                      className={cn(
                        'w-full flex items-center px-4 py-2.5 rounded-xl text-sm font-medium transition-all duration-300 group relative overflow-hidden',
                        'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-kodo-cyan focus-visible:ring-offset-2 focus-visible:ring-offset-kodo-void',
                        isActive
                          ? 'glass-hud-active text-kodo-cyan'
                          : 'text-kodo-secondary hover:text-white hover:bg-white/5',
                      )}
                    >
                      {/* Active indicator bar */}
                      {isActive && (
                        <div className="absolute left-0 top-1 bottom-1 w-1 bg-kodo-cyan rounded-full shadow-[0_0_10px_rgba(102,252,241,0.5)]" />
                      )}

                      <div className="flex items-center gap-4 relative z-10 w-full">
                        <span
                          className={cn(
                            'transition-colors duration-200',
                            isActive
                              ? 'text-kodo-cyan drop-shadow-[0_0_8px_rgba(102,252,241,0.4)]'
                              : 'text-kodo-secondary',
                          )}
                        >
                          {item.icon}
                        </span>
                        {sidebarOpen && (
                          <span className="animate-fadeIn flex-1 truncate">
                            {item.label}
                          </span>
                        )}
                      </div>

                      {item.badge && sidebarOpen && (
                        <span className="ml-2 bg-kodo-magenta/20 text-kodo-magenta text-[9px] px-1.5 py-0.5 rounded-full font-mono font-bold border border-kodo-magenta/30">
                          {item.badge}
                        </span>
                      )}
                    </Link>
                  );
                })}
              </div>
            </div>
          ))}
        </div>

        <div className="p-4 border-t border-white/5 bg-white/2">
          <Link
            to="/settings"
            onClick={() => {
              handleMobileNav();
              if (onNavigate) {
                onNavigate('settings');
              }
            }}
            className={cn(
              'w-full flex items-center gap-4 px-4 py-2.5 text-sm rounded-xl transition-all',
              'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-kodo-cyan focus-visible:ring-offset-2 focus-visible:ring-offset-kodo-void',
              activeView === 'settings'
                ? 'glass-hud-active text-kodo-cyan'
                : 'text-kodo-secondary hover:text-white hover:bg-white/5',
            )}
          >
            <Settings className="w-4 h-4" />
            {sidebarOpen && <span className="animate-fadeIn">Settings</span>}
          </Link>
          <button
            onClick={handleLogout}
            className="w-full flex items-center gap-4 px-4 py-2.5 text-kodo-red/80 hover:text-kodo-red hover:bg-kodo-red/10 rounded-xl transition-all text-sm mt-1 cursor-pointer focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-400 focus-visible:ring-offset-2 focus-visible:ring-offset-kodo-void"
          >
            <LogOut className="w-4 h-4" />
            {sidebarOpen && (
              <span className="animate-fadeIn">Initialize Signout</span>
            )}
          </button>
        </div>
      </aside>
    </>
  );
};