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,
} from 'lucide-react';
import { NavItem } from '../../types';
import { useAuthStore } from '@/features/auth/store/authStore';
import { useUIStore } from '@/stores/ui';
import { cn } from '@/lib/utils';
import { Button } from '@/components/ui/button';

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',
  wishlist: '/marketplace',
  purchases: '/marketplace',
  playlists: '/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) {
      setSidebarOpen(false);
    }
  };

  const activeView =
    currentView ||
    Object.keys(routeMap).find((key) => routeMap[key] === location.pathname) ||
    'dashboard';

  const handleLogout = () => {
    logout();
    navigate('/login');
    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',
          'top-24',
          sidebarOpen ? 'w-64 translate-x-0 opacity-100' : '-translate-x-full lg:translate-x-0 lg:opacity-100 lg:w-20',
        )}
        style={{ zIndex: 90 }}
      >
        {/* Hub Header */}
        <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 flex-shrink-0">
            <Cpu className="w-5 h-5 text-kodo-steel" />
          </div>
          <div className={cn("transition-all duration-300 overflow-hidden", sidebarOpen ? "w-auto opacity-100" : "w-0 opacity-0")}>
            <h2 className="text-xs font-mono font-bold text-white tracking-widest uppercase whitespace-nowrap">
              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 whitespace-nowrap">
                Active
              </span>
            </div>
          </div>

          {/* Toggle Button */}
          <Button
            variant="ghost"
            size="icon"
            onClick={() => setSidebarOpen(!sidebarOpen)}
            className={cn(
              "ml-auto text-kodo-secondary hover:text-white hidden lg:flex",
              !sidebarOpen && "absolute left-1/2 -translate-x-1/2 top-20"
            )}
            aria-label={sidebarOpen ? 'Collapse sidebar' : 'Expand sidebar'}
          >
            {sidebarOpen ? (
              <ChevronLeft className="w-4 h-4" />
            ) : (
              <ChevronRight className="w-4 h-4" />
            )}
          </Button>
        </div>

        {/* Scrollable Nav Content */}
        <div className="flex-1 overflow-y-auto custom-scrollbar p-4 space-y-6">
          {navItems.map((group, idx) => (
            <div key={idx} className="mb-4">
              <h3 className={cn(
                "text-[9px] font-mono font-bold text-kodo-steel/60 uppercase tracking-[0.2em] mb-3 px-4 flex items-center gap-2 transition-all duration-300",
                !sidebarOpen && "justify-center opacity-0 h-0 overflow-hidden mb-0"
              )}>
                {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',
                        // Styles Actifs "Vibrant"
                        isActive
                          ? 'bg-gradient-to-r from-kodo-cyan/20 to-transparent text-white shadow-[0_0_20px_rgba(var(--kodo-cyan),0.15)] border-l-2 border-kodo-cyan'
                          : 'text-kodo-secondary hover:text-white hover:bg-white/5 border-l-2 border-transparent',
                        !sidebarOpen && "justify-center px-2"
                      )}
                    >
                      {/* Active Glow Overlay */}
                      {isActive && (
                        <div className="absolute inset-0 bg-kodo-cyan/5 animate-pulse-slow pointer-events-none" />
                      )}

                      <div className={cn("flex items-center gap-4 relative z-10", !sidebarOpen && "justify-center")}>
                        <span
                          className={cn(
                            'transition-colors duration-200 flex-shrink-0',
                            isActive
                              ? 'text-kodo-cyan drop-shadow-[0_0_8px_rgba(var(--kodo-cyan),0.6)]'
                              : 'text-kodo-secondary group-hover:text-white',
                          )}
                        >
                          {item.icon}
                        </span>

                        <span className={cn(
                          "transition-all duration-300 whitespace-nowrap origin-left",
                          sidebarOpen ? "w-auto opacity-100 scale-100" : "w-0 opacity-0 scale-95 hidden"
                        )}>
                          {item.label}
                        </span>
                      </div>

                      {item.badge && sidebarOpen && (
                        <span className="ml-auto 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 shadow-[0_0_10px_rgba(var(--kodo-magenta),0.2)]">
                          {item.badge}
                        </span>
                      )}

                      {/* Dot for collapsed state */}
                      {item.badge && !sidebarOpen && (
                        <span className="absolute top-2 right-2 w-2 h-2 rounded-full bg-kodo-magenta border border-kodo-void shadow-[0_0_8px_rgba(var(--kodo-magenta),0.5)]" />
                      )}
                    </Link>
                  );
                })}
              </div>
            </div>
          ))}
        </div>

        {/* Footer Actions */}
        <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'
                ? 'bg-kodo-cyan/10 text-kodo-cyan border-l-2 border-kodo-cyan'
                : 'text-kodo-secondary hover:text-white hover:bg-white/5 border-l-2 border-transparent',
              !sidebarOpen && "justify-center"
            )}
            title={!sidebarOpen ? "Settings" : undefined}
          >
            <Settings className="w-4 h-4 flex-shrink-0" />
            <span className={cn("transition-all duration-300 whitespace-nowrap", sidebarOpen ? "opacity-100" : "w-0 opacity-0 hidden")}>
              Settings
            </span>
          </Link>

          <Button
            variant="ghost"
            onClick={handleLogout}
            className={cn(
              "w-full text-kodo-red/80 hover:text-kodo-red hover:bg-kodo-red/10 mt-1 gap-4",
              sidebarOpen ? "justify-start" : "justify-center px-0"
            )}
            title={!sidebarOpen ? "Sign Out" : undefined}
          >
            <LogOut className="w-4 h-4 flex-shrink-0" />
            <span className={cn("transition-all duration-300 whitespace-nowrap", sidebarOpen ? "opacity-100" : "w-0 opacity-0 hidden")}>
              Initialize Signout
            </span>
          </Button>
        </div>
      </aside>
    </>
  );
};