Install Prompt — Triggering PWA Installation to Home Screen

let deferredPrompt = null;
let installButton = null;

window.addEventListener('beforeinstallprompt', event => {
    // Prevent the default mini-infobar from appearing
    event.preventDefault();

    // Store the event for later use
    deferredPrompt = event;

    // Show our custom install button
    showInstallButton();

    console.log('Install prompt captured');
});

function showInstallButton() {
    installButton = document.getElementById('install-button');
    if (installButton) {
        installButton.style.display = 'block';
        installButton.addEventListener('click', showInstallPrompt);
    }
}

async function showInstallPrompt() {
    if (!deferredPrompt) {
        console.log('No install prompt available');
        return;
    }

    // Show the browser install prompt
    deferredPrompt.prompt();

    // Wait for the user's response
    const choiceResult = await deferredPrompt.userChoice;

    if (choiceResult.outcome === 'accepted') {
        console.log('User accepted the install prompt');
        trackInstallAccepted();
    } else {
        console.log('User dismissed the install prompt');
        trackInstallDismissed();
    }

    // Reset the deferred prompt
    deferredPrompt = null;
    hideInstallButton();
}

function hideInstallButton() {
    if (installButton) {
        installButton.style.display = 'none';
    }
}

function showInstallBanner() {
    const banner = document.getElementById('install-banner');
    if (!banner) return;

    // Check if app is already installed
    if (window.matchMedia('(display-mode: standalone)').matches) {
        banner.style.display = 'none';
        return;
    }

    banner.style.display = 'block';
    banner.querySelector('.install-button')
        .addEventListener('click', showInstallPrompt);

    banner.querySelector('.dismiss-button')
        .addEventListener('click', () => {
            banner.style.display = 'none';
            // Show again after 7 days
            localStorage.setItem('install-banner-dismissed', Date.now());
        });
}

// Check if we should show the banner
function shouldShowInstallBanner() {
    const dismissed = localStorage.getItem('install-banner-dismissed');
    if (dismissed) {
        const daysSinceDismiss = (Date.now() - parseInt(dismissed)) / (1000 * 60 * 60 * 24);
        if (daysSinceDismiss < 7) return false;
    }
    return true;
}

// Check if app is running in standalone mode
function isRunningStandalone() {
    return window.matchMedia('(display-mode: standalone)').matches ||
           window.navigator.standalone ||
           document.referrer.includes('android-app://');
}

console.log('Running standalone:', isRunningStandalone());

// Listen for the appinstalled event
window.addEventListener('appinstalled', event => {
    console.log('PWA was installed');
    trackInstallCompleted();
    hideInstallButton();
});

// Track display mode changes
window.matchMedia('(display-mode: standalone)').addEventListener('change', event => {
    if (event.matches) {
        console.log('App moved to standalone mode');
        sendAnalytics('pwa_installed');
    }
});

// Defer install prompt until user has shown engagement
let pageVisits = parseInt(localStorage.getItem('page-visits') || '0');

function trackPageVisit() {
    pageVisits++;
    localStorage.setItem('page-visits', pageVisits.toString());
}

function shouldPromptInstall() {
    const conditions = {
        supported: !!deferredPrompt,
        notInstalled: !isRunningStandalone(),
        sufficientVisits: pageVisits >= 3,
        recentDismiss: checkDismissCooldown(),
        engaged: checkUserEngagement()
    };

    console.log('Install conditions:', conditions);

    return conditions.supported &&
           conditions.notInstalled &&
           conditions.sufficientVisits &&
           !conditions.recentDismiss &&
           conditions.engaged;
}

function checkUserEngagement() {
    const timeOnSite = parseInt(sessionStorage.getItem('time-on-site') || '0');
    return timeOnSite > 60000; // More than 1 minute
}

function checkDismissCooldown() {
    const lastDismiss = localStorage.getItem('install-dismissed');
    if (!lastDismiss) return false;
    return (Date.now() - parseInt(lastDismiss)) < 7 * 24 * 60 * 60 * 1000;
}

// Conditionally show after user engagement
window.addEventListener('beforeinstallprompt', event => {
    event.preventDefault();
    deferredPrompt = event;

    if (shouldPromptInstall()) {
        setTimeout(showInstallBanner, 2000);
    }
});