import { NavLink } from 'react-router-dom';
import { motion, AnimatePresence } from 'framer-motion';
import {
  LayoutGrid,
  MessageSquarePlus,
  ScanFace,
  Building2,
  Sliders,
  Megaphone,
  Shield,
  Users,
  MessageCircle,
  type LucideIcon,
} from 'lucide-react';
import { useStore } from '@/store/useStore';
import { MODULE_ROUTES } from '@/App';
import { isAdminRole } from '@/lib/velocityPlatformClient';

const NAV_ICONS: Record<string, LucideIcon> = {
  '/dashboard': LayoutGrid,
  '/oracle':    MessageSquarePlus,
  '/sentinel':  ScanFace,
  '/inventory': Building2,
  '/catalyst':  Megaphone,
  '/comms':     MessageCircle,
  '/settings':  Sliders,
  '/admin':     Shield,
  '/crm':       Users,
};

export function Sidebar() {
  const { sidebarExpanded, setSidebarExpanded, status, user } = useStore();
  const visibleRoutes = MODULE_ROUTES.filter((route) => !route.adminOnly || isAdminRole(user?.role));

  return (
    <motion.aside
      className="fixed left-0 top-0 h-screen z-50 flex flex-col overflow-hidden"
      initial={{ width: 72 }}
      animate={{ width: sidebarExpanded ? 232 : 72 }}
      transition={{ type: 'spring', stiffness: 320, damping: 32, mass: 0.8 }}
      onMouseEnter={() => setSidebarExpanded(true)}
      onMouseLeave={() => setSidebarExpanded(false)}
    >
      {/* Glassmorphism Background */}
      <div
        className="absolute inset-0"
        style={{
          background: 'rgba(13, 14, 18, 0.65)',
          backdropFilter: 'blur(20px)',
          WebkitBackdropFilter: 'blur(20px)',
          borderRight: '1px solid rgba(255,255,255,0.07)',
        }}
      />

      {/* Content */}
      <div className="relative flex flex-col h-full py-5">

        {/* Brand Name */}
        <div className="flex items-center px-4 mb-8 overflow-hidden" style={{ height: 36 }}>
          <motion.div
            className="overflow-hidden whitespace-nowrap"
            initial={{ opacity: 0, width: 0 }}
            animate={{ opacity: sidebarExpanded ? 1 : 0, width: sidebarExpanded ? 'auto' : 0 }}
            transition={{ duration: 0.2 }}
          >
            <p className="font-bold text-white tracking-tight" style={{ fontSize: 18 }}>Velocity</p>
            <p className="text-[10px]" style={{ color: 'hsl(var(--muted-fg))' }}>v.1.1</p>
          </motion.div>
        </div>

        {/* Nav */}
        <nav className="flex-1 px-3 space-y-1">
          {visibleRoutes.map((route) => {
            const Icon = NAV_ICONS[route.path] ?? LayoutGrid;

            return (
              <NavLink
                key={route.path}
                to={route.path}
                className="block"
              >
                {({ isActive }) => (
                  <motion.div
                    className="relative w-full flex items-center rounded-xl transition-colors duration-150 cursor-pointer"
                    style={{
                      height: 44,
                      background: isActive ? 'hsl(var(--accent) / 0.12)' : 'transparent',
                      color: isActive ? 'hsl(var(--accent))' : 'hsl(var(--muted-fg))',
                    }}
                    whileHover={{ x: 2 }}
                    whileTap={{ scale: 0.97 }}
                    onHoverStart={(e) => {
                      if (!isActive) (e.target as HTMLElement).style.background = 'hsl(var(--surface-2))';
                    }}
                    onHoverEnd={(e) => {
                      if (!isActive) (e.target as HTMLElement).style.background = 'transparent';
                    }}
                  >
                    {/* Active left bar */}
                    {isActive && (
                      <motion.div
                        layoutId="activeBar"
                        className="absolute left-0 top-2 bottom-2 w-0.5 rounded-full"
                        style={{ background: 'hsl(var(--accent))' }}
                        transition={{ type: 'spring', stiffness: 400, damping: 30 }}
                      />
                    )}

                    <div className="w-11 flex justify-center flex-shrink-0">
                      <Icon className="w-[18px] h-[18px]" />
                    </div>

                    <motion.span
                      className="whitespace-nowrap font-medium text-sm overflow-hidden"
                      initial={{ opacity: 0 }}
                      animate={{ opacity: sidebarExpanded ? 1 : 0 }}
                      transition={{ duration: 0.15, delay: sidebarExpanded ? 0.08 : 0 }}
                    >
                      {route.title}
                    </motion.span>
                  </motion.div>
                )}
              </NavLink>
            );
          })}
        </nav>

        {/* Status Footer */}
        <div className="px-4 pt-4" style={{ borderTop: '1px solid hsl(var(--border-subtle))' }}>
          <div className="flex items-center gap-3">
            <div className="relative flex-shrink-0">
              <div
                className={`w-2 h-2 rounded-full ${status.serverStatus === 'online' ? 'bg-green-500' :
                  status.serverStatus === 'offline' ? 'bg-red-500' : 'bg-amber-500'
                  }`}
              />
              {status.serverStatus === 'online' && (
                <div className="absolute inset-0 rounded-full bg-green-500 status-pulse" />
              )}
            </div>
            <AnimatePresence>
              {sidebarExpanded && (
                <motion.div
                  initial={{ opacity: 0 }}
                  animate={{ opacity: 1 }}
                  exit={{ opacity: 0 }}
                  transition={{ duration: 0.15 }}
                >
                  <p className="text-xs whitespace-nowrap" style={{ color: 'hsl(var(--muted-fg))' }}>
                    {status.serverStatus === 'online' && 'Server Connected'}
                    {status.serverStatus === 'offline' && 'Server Offline'}
                    {status.serverStatus === 'syncing' && 'Syncing…'}
                  </p>
                  <p className="text-[10px] whitespace-nowrap" style={{ color: 'hsl(var(--subtle-fg))' }}>
                    v{status.version}
                  </p>
                </motion.div>
              )}
            </AnimatePresence>
          </div>
        </div>
      </div>
    </motion.aside>
  );
}