import React, { useState } from 'react';
import { Link, useLocation } from 'react-router-dom';
import { createPageUrl } from '@/utils';
import { motion, AnimatePresence } from 'framer-motion';
import {
  LayoutDashboard,
  FolderOpen,
  Calendar,
  PenTool,
  Link2,
  Settings,
  Menu,
  X,
  Bell,
  Search,
  ChevronDown,
  Linkedin,
  Sparkles,
  LogOut,
  User,
  HelpCircle
} from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
import { Badge } from '@/components/ui/badge';
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuLabel,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from '@/components/ui/dropdown-menu';

const navItems = [
  { name: 'Dashboard', icon: LayoutDashboard, href: 'Dashboard' },
  { name: 'Repository', icon: FolderOpen, href: 'Repository' },
  { name: 'Scheduler', icon: Calendar, href: 'Scheduler' },
  { name: 'Post Editor', icon: PenTool, href: 'PostEditor' },
  { name: 'Integrations', icon: Link2, href: 'Integrations' },
];

export default function Layout({ children, currentPageName }) {
  const [sidebarOpen, setSidebarOpen] = useState(false);
  const location = useLocation();
  const currentPage = navItems.find(item => createPageUrl(item.href) === location.pathname)?.href || 'Dashboard';

  return (
    <div className="min-h-screen bg-slate-50">
      {/* Mobile Sidebar Overlay */}
      <AnimatePresence>
        {sidebarOpen && (
          <motion.div
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            exit={{ opacity: 0 }}
            className="fixed inset-0 bg-black/50 z-40 lg:hidden"
            onClick={() => setSidebarOpen(false)}
          />
        )}
      </AnimatePresence>

      {/* Sidebar */}
      <aside className={`fixed top-0 left-0 z-50 h-full w-64 bg-white border-r border-slate-200 transform transition-transform duration-300 ease-in-out lg:translate-x-0 ${
        sidebarOpen ? 'translate-x-0' : '-translate-x-full'
      }`}>
        <div className="flex flex-col h-full">
          {/* Logo */}
          <div className="h-16 flex items-center justify-between px-4 border-b border-slate-100">
            <Link to={createPageUrl('Dashboard')} className="flex items-center gap-2">
              <div className="w-9 h-9 rounded-xl bg-gradient-to-br from-blue-600 to-indigo-600 flex items-center justify-center shadow-lg shadow-blue-500/30">
                <Linkedin className="w-5 h-5 text-white" />
              </div>
              <div>
                <span className="font-bold text-slate-900 text-lg">PostGen</span>
                <span className="text-xs text-slate-500 block -mt-1">LinkedIn Scheduler</span>
              </div>
            </Link>
            <Button 
              variant="ghost" 
              size="icon" 
              className="lg:hidden"
              onClick={() => setSidebarOpen(false)}
            >
              <X className="w-5 h-5" />
            </Button>
          </div>

          {/* Navigation */}
          <nav className="flex-1 p-4 space-y-1 overflow-y-auto">
            {navItems.map((item) => {
              const isActive = currentPage === item.href;
              return (
                <Link
                  key={item.name}
                  to={createPageUrl(item.href)}
                  onClick={() => setSidebarOpen(false)}
                  className={`flex items-center gap-3 px-3 py-2.5 rounded-xl text-sm font-medium transition-all ${
                    isActive
                      ? 'bg-blue-50 text-blue-700'
                      : 'text-slate-600 hover:bg-slate-50 hover:text-slate-900'
                  }`}
                >
                  <item.icon className={`w-5 h-5 ${isActive ? 'text-blue-600' : 'text-slate-400'}`} />
                  {item.name}
                  {item.name === 'Repository' && (
                    <Badge className="ml-auto bg-blue-100 text-blue-700 text-[10px] px-1.5 py-0 border-0">
                      156
                    </Badge>
                  )}
                </Link>
              );
            })}
          </nav>

          {/* Quick Create */}
          <div className="p-4 border-t border-slate-100">
            <Link to={createPageUrl('PostEditor')}>
              <Button className="w-full gap-2 bg-gradient-to-r from-blue-600 to-indigo-600 hover:from-blue-700 hover:to-indigo-700 shadow-lg shadow-blue-500/25">
                <Sparkles className="w-4 h-4" />
                Create Post
              </Button>
            </Link>
          </div>

          {/* User Profile */}
          <div className="p-4 border-t border-slate-100">
            <DropdownMenu>
              <DropdownMenuTrigger asChild>
                <button className="flex items-center gap-3 w-full p-2 rounded-xl hover:bg-slate-50 transition-colors">
                  <Avatar className="h-9 w-9">
                    <AvatarImage src="https://images.unsplash.com/photo-1472099645785-5658abf4ff4e?w=100&h=100&fit=crop" />
                    <AvatarFallback>AB</AvatarFallback>
                  </Avatar>
                  <div className="flex-1 text-left">
                    <p className="text-sm font-medium text-slate-900">Alex Business</p>
                    <p className="text-xs text-slate-500">Pro Plan</p>
                  </div>
                  <ChevronDown className="w-4 h-4 text-slate-400" />
                </button>
              </DropdownMenuTrigger>
              <DropdownMenuContent align="end" className="w-56">
                <DropdownMenuLabel>My Account</DropdownMenuLabel>
                <DropdownMenuSeparator />
                <DropdownMenuItem>
                  <User className="w-4 h-4 mr-2" />
                  Profile Settings
                </DropdownMenuItem>
                <DropdownMenuItem>
                  <Settings className="w-4 h-4 mr-2" />
                  Preferences
                </DropdownMenuItem>
                <DropdownMenuItem>
                  <HelpCircle className="w-4 h-4 mr-2" />
                  Help & Support
                </DropdownMenuItem>
                <DropdownMenuSeparator />
                <DropdownMenuItem className="text-red-600">
                  <LogOut className="w-4 h-4 mr-2" />
                  Sign Out
                </DropdownMenuItem>
              </DropdownMenuContent>
            </DropdownMenu>
          </div>
        </div>
      </aside>

      {/* Main Content */}
      <div className="lg:pl-64">
        {/* Top Header */}
        <header className="h-16 bg-white border-b border-slate-200 sticky top-0 z-30">
          <div className="h-full px-4 flex items-center justify-between gap-4">
            {/* Mobile Menu Toggle */}
            <Button
              variant="ghost"
              size="icon"
              className="lg:hidden"
              onClick={() => setSidebarOpen(true)}
            >
              <Menu className="w-5 h-5" />
            </Button>

            {/* Search */}
            <div className="flex-1 max-w-md hidden sm:block">
              <div className="relative">
                <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-slate-400" />
                <Input
                  placeholder="Search posts, assets, schedules..."
                  className="pl-10 bg-slate-50 border-slate-200 focus:bg-white"
                />
              </div>
            </div>

            {/* Right Actions */}
            <div className="flex items-center gap-2">
              <Button variant="ghost" size="icon" className="relative">
                <Bell className="w-5 h-5 text-slate-600" />
                <span className="absolute top-1.5 right-1.5 w-2 h-2 bg-red-500 rounded-full" />
              </Button>
              
              {/* Connection Status */}
              <div className="hidden md:flex items-center gap-2 px-3 py-1.5 rounded-lg bg-emerald-50 border border-emerald-100">
                <div className="w-2 h-2 rounded-full bg-emerald-500 animate-pulse" />
                <span className="text-xs font-medium text-emerald-700">LinkedIn Connected</span>
              </div>
            </div>
          </div>
        </header>

        {/* Page Content */}
        <main>
          {children}
        </main>
      </div>
    </div>
  );
}