import { useState, useEffect } from 'react';
import { Download, X } from 'lucide-react';
import { Button } from '@/components/ui/button';

export default function InstallPrompt() {
  const [deferredPrompt, setDeferredPrompt] = useState<any>(null);
  const [showPrompt, setShowPrompt] = useState(false);

  useEffect(() => {
    const handler = (e: any) => {
      e.preventDefault();
      setDeferredPrompt(e);
      setShowPrompt(true);
    };

    window.addEventListener('beforeinstallprompt', handler);

    return () => {
      window.removeEventListener('beforeinstallprompt', handler);
    };
  }, []);

  const handleInstall = async () => {
    if (!deferredPrompt) return;

    deferredPrompt.prompt();
    const { outcome } = await deferredPrompt.userChoice;
    
    if (outcome === 'accepted') {
      setDeferredPrompt(null);
      setShowPrompt(false);
    }
  };

  if (!showPrompt) return null;

  return (
    <div className="fixed bottom-4 left-4 right-4 md:left-auto md:right-4 md:w-96 bg-white rounded-lg shadow-lg border border-gray-200 p-4 z-50 animate-in slide-in-from-bottom-4 duration-300">
      <div className="flex items-start justify-between gap-4">
        <div className="flex-1">
          <h3 className="font-semibold text-gray-900 mb-1">Install App</h3>
          <p className="text-sm text-gray-600 mb-3">
            Install QA Hub for a better experience and offline access.
          </p>
          <div className="flex gap-2">
            <Button size="sm" onClick={handleInstall} className="bg-sky-500 hover:bg-sky-600 text-white">
              <Download className="w-4 h-4 mr-2" />
              Install
            </Button>
            <Button size="sm" variant="ghost" onClick={() => setShowPrompt(false)}>
              Not now
            </Button>
          </div>
        </div>
        <button 
          onClick={() => setShowPrompt(false)}
          className="text-gray-400 hover:text-gray-600"
        >
          <X className="w-5 h-5" />
        </button>
      </div>
    </div>
  );
}