src/components/layout/Header.tsx

import { Bell, Search, HelpCircle, Menu } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Badge } from '@/components/ui/badge';
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuLabel,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from '@/components/ui/dropdown-menu';
import { useIsMobile } from '@/hooks/use-mobile';

interface HeaderProps {
  onMobileMenuOpen: () => void;
}

export function Header({ onMobileMenuOpen }: HeaderProps) {
  const isMobile = useIsMobile();
  return (
    <header className="sticky top-0 z-30 h-16 border-b border-border bg-card/95 backdrop-blur supports-[backdrop-filter]:bg-card/60">
      <div className="flex h-full items-center justify-between px-4 md:px-6 gap-4">
        {/* Mobile Menu Button */}
        {isMobile && (
          <Button
            variant="ghost"
            size="icon"
            className="text-muted-foreground hover:text-foreground"
            onClick={onMobileMenuOpen}
          >
            <Menu className="h-5 w-5" />
          </Button>
        )}

        {/* Search */}
        <div className="relative flex-1 max-w-md">
          <Search className="absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
          <Input
            type="search"
            placeholder={isMobile ? "Search..." : "Search applications, certificates..."}
            className="pl-10 bg-background"
          />
        </div>

        {/* Actions */}
        <div className="flex items-center gap-2">
          <Button variant="ghost" size="icon" className="text-muted-foreground hover:text-foreground">
            <HelpCircle className="h-5 w-5" />
          </Button>

          <DropdownMenu>
            <DropdownMenuTrigger asChild>
              <Button variant="ghost" size="icon" className="relative text-muted-foreground hover:text-foreground">
                <Bell className="h-5 w-5" />
                <Badge className="absolute -right-1 -top-1 h-5 w-5 rounded-full p-0 text-[10px] bg-destructive text-destructive-foreground">
                  5
                </Badge>
              </Button>
            </DropdownMenuTrigger>
            <DropdownMenuContent align="end" className="w-80">
              <DropdownMenuLabel>Notifications</DropdownMenuLabel>
              <DropdownMenuSeparator />
              <DropdownMenuItem className="flex flex-col items-start gap-1 py-3">
                <span className="font-medium text-sm">New Application Submitted</span>
                <span className="text-xs text-muted-foreground">SHAP/H/2025/004 - Blue Lagoon Hatchery</span>
                <span className="text-xs text-muted-foreground">2 minutes ago</span>
              </DropdownMenuItem>
              <DropdownMenuItem className="flex flex-col items-start gap-1 py-3">
                <span className="font-medium text-sm">Audit Report Submitted</span>
                <span className="text-xs text-muted-foreground">Dr. Mohan Das submitted report for SHAP/H/2025/001</span>
                <span className="text-xs text-muted-foreground">1 hour ago</span>
              </DropdownMenuItem>
              <DropdownMenuItem className="flex flex-col items-start gap-1 py-3">
                <span className="font-medium text-sm">Non-Compliance Resolved</span>
                <span className="text-xs text-muted-foreground">NC resolved for Coastal Aqua Hatchery</span>
                <span className="text-xs text-muted-foreground">3 hours ago</span>
              </DropdownMenuItem>
              <DropdownMenuSeparator />
              <DropdownMenuItem className="text-center text-primary text-sm">
                View all notifications
              </DropdownMenuItem>
            </DropdownMenuContent>
          </DropdownMenu>
        </div>
      </div>
    </header>
  );
}