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import { useState, useEffect } from 'react';
import { Download, X } from 'lucide-react';
import { Button } from '@/components/ui/button';
interface BeforeInstallPromptEvent extends Event {
prompt: () => Promise<void>;
userChoice: Promise<{ outcome: 'accepted' | 'dismissed' }>;
}
export function PWAInstallPrompt() {
const [deferredPrompt, setDeferredPrompt] = useState<BeforeInstallPromptEvent | null>(null);
const [showPrompt, setShowPrompt] = useState(false);
const [isIOS, setIsIOS] = useState(false);
useEffect(() => {
// Check if already installed
if (window.matchMedia('(display-mode: standalone)').matches) {
return;
}
// Check if dismissed recently
const dismissed = localStorage.getItem('pwa-prompt-dismissed');
if (dismissed) {
const dismissedDate = new Date(dismissed);
const daysSinceDismissed = (Date.now() - dismissedDate.getTime()) / (1000 * 60 * 60 * 24);
if (daysSinceDismissed < 7) return; // Don't show for 7 days after dismissal
}
// Check for iOS
const isIOSDevice = /iPad|iPhone|iPod/.test(navigator.userAgent);
setIsIOS(isIOSDevice);
if (isIOSDevice) {
// Show custom prompt for iOS after a delay
const timer = setTimeout(() => setShowPrompt(true), 3000);
return () => clearTimeout(timer);
}
// Handle beforeinstallprompt for Android/Desktop
const handler = (e: Event) => {
e.preventDefault();
setDeferredPrompt(e as BeforeInstallPromptEvent);
// Show prompt after a delay
setTimeout(() => setShowPrompt(true), 3000);
};
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') {
setShowPrompt(false);
}
setDeferredPrompt(null);
};
const handleDismiss = () => {
setShowPrompt(false);
localStorage.setItem('pwa-prompt-dismissed', new Date().toISOString());
};
if (!showPrompt) return null;
return (
<div className="fixed bottom-4 left-4 right-4 z-50 mx-auto max-w-md animate-in slide-in-from-bottom-4">
<div className="rounded-lg border bg-background p-4 shadow-lg">
<div className="flex items-start gap-3">
<div className="flex h-10 w-10 shrink-0 items-center justify-center rounded-full bg-primary/10">
<Download className="h-5 w-5 text-primary" />
</div>
<div className="flex-1">
<h3 className="font-semibold">Install ProofID</h3>
{isIOS ? (
<p className="mt-1 text-sm text-muted-foreground">
Tap the share button <span className="inline-block rotate-90">⎋</span> and select
"Add to Home Screen" for the best experience.
</p>
) : (
<p className="mt-1 text-sm text-muted-foreground">
Install our app for quick access and offline support.
</p>
)}
{!isIOS && deferredPrompt && (
<div className="mt-3 flex gap-2">
<Button size="sm" onClick={handleInstall}>
Install
</Button>
<Button size="sm" variant="ghost" onClick={handleDismiss}>
Not now
</Button>
</div>
)}
{isIOS && (
<Button size="sm" variant="ghost" className="mt-2" onClick={handleDismiss}>
Got it
</Button>
)}
</div>
<button
onClick={handleDismiss}
className="text-muted-foreground hover:text-foreground"
aria-label="Dismiss"
>
<X className="h-4 w-4" />
</button>
</div>
</div>
</div>
);
}
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