खरीदारी और अधिकार

Copyif (window.AppMint && AppMint.revenuecat) {
  await AppMint.revenuecat.configure({ appUserId: currentUser && currentUser.id });   // omit for an anonymous user
  var off = await AppMint.revenuecat.getOfferings();
  if (off.ok && off.current) {
    off.current.availablePackages.forEach((p) => addPlanButton(p.identifier, p.title, p.price, p.period));
  }
}

async function buy(pkg) {                        // a package object from getOfferings, or its identifier
  var r = await AppMint.revenuecat.purchase(pkg);
  if (r.ok) unlock(r.customerInfo.entitlements.active);
  else if (r.error === 'pending') alert('Payment pending — it will unlock when Google confirms it.');
  else if (!r.cancelled) alert('Purchase failed: ' + (r.message || r.error));
}

var info = await AppMint.revenuecat.getCustomerInfo();
var isPro = info.ok && !!info.customerInfo.entitlements.active.pro;

window.addEventListener('appmint:revenuecat', (e) => render(e.detail.customerInfo));   // entitlements changed
document.getElementById('restore').onclick = () => AppMint.revenuecat.restore();

Copyif (window.AppMint && AppMint.revenuecat) {
  var li = await AppMint.revenuecat.logIn(user.id);       // after sign-in
  if (li.ok) refreshPlan(li.customerInfo.entitlements.active);
  document.getElementById('signout').onclick = async function () {
    await AppMint.revenuecat.logOut();
    showAnonymous();
  };
}

Copyasync function buyPackage(pkg) {
  var r = await AppMint.revenuecat.purchase(pkg);
  if (r.ok) return unlock(r.customerInfo.entitlements.active);
  if (r.cancelled || r.error === 'cancelled') return;
  var text = {
    not_configured: 'Purchases are not set up in this build',
    billing_unavailable: 'Google Play billing is not available on this phone',
    product_not_found: 'This plan is not available right now',
    network: 'No connection - try again online'
  }[r.error] || ('Purchase failed: ' + (r.message || r.error));
  alert(text);
}

Copyvar inApp = !!(window.AppMintIAP && window.AppMintIAP.available);
var buyBtn = document.getElementById('buy-pro');

if (!inApp) {
  buyBtn.disabled = true;
  buyBtn.textContent = 'Available in the Android app';
}

Copydocument.getElementById('upgrade').addEventListener('click', function () {
  var iap = window.AppMintIAP;
  if (iap && iap.available) {
    iap.buy('pro_unlock');                                   // inside the app
  } else if (window.WebToApk) {
    showMessage('Upgrades are not available in this version of the app.');
  } else {
    location.href = '/checkout/pro';                         // your website's own checkout
  }
});

Copyimport { useEffect, useState } from 'react';

export function useCanBuy() {
  const [canBuy, setCanBuy] = useState(false);     // false during the server render
  useEffect(() => {
    setCanBuy(!!(window.AppMintIAP && window.AppMintIAP.available));
  }, []);
  return canBuy;
}

// const canBuy = useCanBuy();
// return canBuy ? <UpgradeButton /> : null;

Copyvar btn = document.getElementById('buy-pro');

btn.addEventListener('click', function () {
  if (!window.AppMintIAP || !window.AppMintIAP.available) { showMessage('Available in the Android app.'); return; }
  btn.disabled = true;
  window.AppMintIAP.buy('pro_unlock');
});

window.addEventListener('appmint:purchase', function (e) {
  if (e.detail.productId === 'pro_unlock') unlockPro();     // must be safe to run twice
  btn.disabled = false;
});
window.addEventListener('appmint:purchase-failed', function (e) {
  btn.disabled = false;
  showMessage(e.detail.reason === 'pending' ? 'Payment pending. It unlocks once Google confirms.' : 'Purchase failed: ' + e.detail.reason);
});
document.addEventListener('visibilitychange', function () { if (!document.hidden) btn.disabled = false; });   // cancel: no event

Copydocument.getElementById('continue').addEventListener('click', function () {
  var choice = document.querySelector('input[name="plan"]:checked');   // value = product ID
  var iap = window.AppMintIAP;
  if (!choice || !iap || !iap.available) return;
  if (iap.isOwned(choice.value)) { showMessage('You already have this plan.'); return; }
  iap.buy(choice.value);
});

window.addEventListener('appmint:purchase', function () {
  document.getElementById('plan-picker').hidden = true;
  showMessage('Thanks! Your plan is active.');
});

Copydocument.querySelectorAll('[data-pro-tool]').forEach(function (btn) {
  btn.addEventListener('click', function () {
    var iap = window.AppMintIAP;
    if (iap && iap.isOwned('pro_unlock')) { runTool(btn.getAttribute('data-pro-tool')); return; }
    if (iap && iap.available) iap.buy('pro_unlock');
    else showMessage('Pro tools are available in the Android app.');
  });
});

window.addEventListener('appmint:purchase', function (e) {
  if (e.detail.productId === 'pro_unlock') document.body.classList.add('pro');
});

Copyfunction paintPro() {
  var pro = !!(window.AppMintIAP && window.AppMintIAP.isOwned('pro_unlock'));
  document.getElementById('pro-tools').hidden = !pro;
}

// Re-check whenever ownership can change.
window.addEventListener('appmint:purchase', paintPro);
window.addEventListener('appmint:owned-changed', paintPro);

// AppMintIAP arrives after the page has loaded: paint once it is there.
var waitIap = setInterval(function () {
  if (window.AppMintIAP) { clearInterval(waitIap); paintPro(); }
}, 200);
setTimeout(function () { clearInterval(waitIap); }, 10000);   // not in the app, or selling is off

Copyvar PRO_PLANS = ['pro_monthly', 'pro_yearly', 'pro_lifetime'];

function isPro() {
  var iap = window.AppMintIAP;
  return !!iap && PRO_PLANS.some(function (id) { return iap.isOwned(id); });
}

function paintPlan() { document.body.classList.toggle('pro', isPro()); }
paintPlan();
window.addEventListener('appmint:purchase', paintPlan);
window.addEventListener('appmint:owned-changed', paintPlan);   // an expired subscription or a refund

Copyfunction route() {
  var path = location.hash.slice(1) || '/';
  var proOnly = path.indexOf('/reports') === 0;
  if (proOnly && !(window.AppMintIAP && window.AppMintIAP.isOwned('pro_unlock'))) {
    location.replace('#/upgrade');
    return;
  }
  render(path);
}

window.addEventListener('hashchange', route);
route();

Copyimport { useEffect, useState } from 'react';

type IapState = { available: boolean; adFree: boolean; owned: boolean; ownedIds: string[];
  products: Record<string, { price: string | null; currency: string | null; type: string | null; period: string | null; owned: boolean }> };

export function useIap(ids: string[]) {
  const [iap, setIap] = useState<IapState>({ available: false, adFree: false, owned: false, ownedIds: [], products: {} });
  useEffect(() => {
    let stop: (() => void) | undefined;
    const t = setInterval(() => {                   // AppMintIAP arrives after page load
      const api = (window as any).AppMintIAP;
      if (!api) return;
      clearInterval(t);
      ids.forEach((id) => api.sell(id, null));      // track them, so their prices are fetched
      stop = api.onChange(setIap);
    }, 200);
    return () => { clearInterval(t); if (stop) stop(); };
  }, []);
  return iap;
}

// const iap = useIap(['pro_unlock']);
// const isPro = iap.ownedIds.includes('pro_unlock');
// const price = iap.products.pro_unlock?.price;

Copyvar iap = window.AppMintIAP;
var PLANS = ['pro_monthly', 'pro_yearly'];

if (iap) {
  iap.start({ plans: PLANS.map(function (id) { return { id: id }; }) });   // tracked, not drawn
  iap.onChange(function (s) {
    document.getElementById('paywall').hidden = !s.available;
    PLANS.forEach(function (id) {
      var el = document.querySelector('[data-plan="' + id + '"]');
      var p = s.products[id];
      el.hidden = !p;                                // Google has not answered for it (yet)
      if (p) el.querySelector('.price').textContent = p.owned ? 'Your plan' : p.price;
    });
  });
}

Copyvar stopAccount = null;

function openAccountScreen() {
  if (window.AppMintIAP) {
    stopAccount = window.AppMintIAP.onChange(function (s) {
      document.getElementById('ad-status').textContent = s.adFree ? 'Ad-free' : 'With ads';
      document.getElementById('owned-count').textContent = s.ownedIds.length + ' purchase(s)';
    });
  }
  showScreen('account');
}

function closeAccountScreen() {
  if (stopAccount) { stopAccount(); stopAccount = null; }   // no updates for a hidden screen
  showScreen('home');
}

Copyfunction unlockOwnedLevels() {
  var ids = window.AppMintIAP ? window.AppMintIAP.owned() : [];
  document.querySelectorAll('[data-level-pack]').forEach(function (el) {
    el.classList.toggle('locked', ids.indexOf(el.getAttribute('data-level-pack')) === -1);
  });
}

window.addEventListener('appmint:owned-changed', unlockOwnedLevels);   // restore or refund changed the list
window.addEventListener('appmint:purchase', unlockOwnedLevels);

Copyfunction unlockedLevelCount() {
  var ids = window.AppMintIAP ? window.AppMintIAP.owned() : [];
  var packs = ids.filter(function (id) { return /^level_pack_\d+$/.test(id); }).length;
  return 10 + packs * 10;                         // 10 free levels, 10 more per pack
}

function paintLevelCount() {
  document.getElementById('levels-label').textContent = unlockedLevelCount() + ' levels unlocked';
}
paintLevelCount();
window.addEventListener('appmint:owned-changed', paintLevelCount);

Copyvar LABELS = { pro_unlock: 'Pro features', remove_ads: 'No ads', level_pack_2: 'Levels 11-20' };

function renderPurchases() {
  var ids = window.AppMintIAP ? window.AppMintIAP.owned() : [];
  var list = document.getElementById('purchases');
  list.textContent = '';
  ids.forEach(function (id) {
    var li = document.createElement('li');
    li.textContent = LABELS[id] || id;
    list.appendChild(li);
  });
  document.getElementById('no-purchases').hidden = ids.length > 0;
}
renderPurchases();
window.addEventListener('appmint:owned-changed', renderPurchases);

Copyfunction showShop() {
  var btn = document.getElementById('buy-coins');
  btn.setAttribute('data-iap-buy', 'coins_500');          // attribute added to an EXISTING node
  btn.setAttribute('data-iap-label', '500 coins — {price}');
  if (window.AppMintIAP) window.AppMintIAP.refresh();
}

Copyfetch('/shop.json').then(function (r) { return r.json(); }).then(function (shop) {
  shop.items.forEach(function (item) {           // [{slot, productId, name}]
    var btn = document.querySelector('.shop-card[data-slot="' + item.slot + '"] button');
    if (!btn) return;
    btn.setAttribute('data-iap-buy', item.productId);
    btn.setAttribute('data-iap-label', item.name + ' - {price}');
  });
  if (window.AppMintIAP) window.AppMintIAP.refresh();
});

Copyvar saleStart = new Date('2026-12-01T00:00:00').getTime();

function openSale() {
  var btn = document.getElementById('sale-btn');
  btn.setAttribute('data-iap-buy', 'holiday_bundle');
  btn.setAttribute('data-iap-owned', 'Bundle unlocked');
  document.getElementById('sale-card').hidden = false;
  if (window.AppMintIAP) window.AppMintIAP.refresh();
}

var wait = saleStart - Date.now();
if (wait <= 0) openSale();
else if (wait < 86400000) setTimeout(openSale, wait);   // later than a day: the next launch opens it

Copyfunction whenIap(fn) {
  if (window.AppMintIAP) { fn(window.AppMintIAP); return; }
  var tries = 0;
  var t = setInterval(function () {
    if (window.AppMintIAP) { clearInterval(t); fn(window.AppMintIAP); }
    else if (++tries > 50) clearInterval(t);          // not in the app, or selling is off
  }, 200);
}

whenIap(function (iap) {
  iap.sell('pro_unlock', '#buy-pro', {
    label: 'Unlock Pro — {price}',     // {price} = Google's live, localized price
    owned: '✓ Unlocked',               // the button text once owned
    show: '#thanks',                   // shown once owned
    hide: '.upsell'                    // hidden once owned
  });
  iap.sell('coins_500', '#buy-coins', { label: '500 coins — {price}' });
});

CopywhenIap(function (iap) {
  iap.sell('pass_monthly', '#monthly', { label: 'Monthly — {price}', group: 'pass' })
     .sell('pass_yearly', '#yearly', { label: 'Yearly — {price}', group: 'pass' });
});

CopywhenIap(function (iap) {
  iap.sell('remove_ads', null);                      // tracked, never drawn by the helper
  iap.onChange(function (s) {
    var p = s.products.remove_ads;                   // undefined until Google answers
    var btn = document.getElementById('remove-ads');
    if (!s.available || (p && p.owned)) { btn.hidden = true; return; }
    btn.hidden = false;
    btn.textContent = p && p.price ? 'Remove ads for ' + p.price : 'Remove ads';
  });
  document.getElementById('remove-ads').addEventListener('click', function () {
    iap.buy('remove_ads');
  });
});

Copydocument.getElementById('open-shop').addEventListener('click', function () {
  openShopDialog();                                  // your code: adds <button id="buy-levels">
  if (!window.AppMintIAP) return;                    // not in the app
  window.AppMintIAP.sell('level_pack_2', '#buy-levels', {
    label: 'Levels 11-20 — {price}',
    owned: '✓ Levels 11-20 unlocked',
    show: '#levels-2-link'                           // your menu entry, shown once owned
  });
});

Copy<div data-iap-container>                              <!-- shown only inside the app -->
  <button data-iap-buy="pass_monthly" data-iap-group="pass"
          data-iap-label="Monthly — {price}" data-iap-owned="Active">Monthly</button>
  <button data-iap-buy="pass_lifetime" data-iap-group="pass"
          data-iap-label="Lifetime — {price}" data-iap-owned="Owned">
    <img src="star.svg" alt=""> <span data-iap-text>Lifetime</span>   <!-- only this text changes -->
  </button>
  <button data-iap-buy="coins_500" data-iap-label="500 coins — {price}">500 coins</button>
</div>

<p data-iap-show="pass" hidden>You are a member. Thank you!</p>   <!-- shown when any "pass" plan is owned -->
<p data-iap-hide="pass">Members get every level and no ads.</p>    <!-- hidden once it is owned -->

Copyfunction whenIap(fn) {                               // AppMintIAP arrives after page load
  if (window.AppMintIAP) { fn(window.AppMintIAP); return; }
  var tries = 0;
  var t = setInterval(function () {
    if (window.AppMintIAP) { clearInterval(t); fn(window.AppMintIAP); }
    else if (++tries > 50) clearInterval(t);         // not in the app, or selling is off
  }, 200);
}

whenIap(function (iap) {
  iap.start({
    plans: [
      { id: 'pro_unlock', button: '#buy-pro', label: 'Unlock Pro — {price}', owned: '✓ Pro' },
      { id: 'coins_500', button: '#buy-coins', label: '500 coins — {price}' }
    ],
    show: '#pro-area',                 // shown once anything is owned
    hide: '.upsell',                   // hidden once anything is owned
    busyLabel: 'Opening Google Play…',
    onUnlock: function (id) { console.log('now owned:', id); },
    onLock: function (id) { console.log('no longer owned (refund or expiry):', id); },
    toast: function (msg) { showMessage(msg); }     // failure messages; default: window.showToast, else alert
  });
});

Copyfunction ProButton() {
  const [iap, setIap] = React.useState({ available: false, products: {} });

  React.useEffect(() => {
    if (typeof window === 'undefined' || !window.AppMintIAP) return;   // server render / browser
    window.AppMintIAP.start({ plans: [{ id: 'pro_unlock' }] });       // safe to run twice
    return window.AppMintIAP.onChange(setIap);
  }, []);

  const pro = iap.products?.pro_unlock;                                // read ownership per product
  if (!iap.available) return null;                                     // nothing to buy outside the app
  return pro?.owned
    ? <p>Thanks! Pro is unlocked.</p>
    : <button onClick={() => window.AppMintIAP.buy('pro_unlock')}>Unlock Pro {pro?.price}</button>;
}

Copyfunction setUpShop(iap) {
  if (!iap.started) {
    iap.start({
      plans: [{ id: 'pro_unlock', button: '#buy-pro', label: 'Unlock Pro — {price}' }],
      toast: function (msg) { showMessage(msg); }
    });
  } else {
    // Already running (the page had data-iap-buy buttons): start() would do nothing now.
    iap.sell('pro_unlock', '#buy-pro', { label: 'Unlock Pro — {price}' });
  }
}
if (window.AppMintIAP) setUpShop(window.AppMintIAP);

Copywindow.addEventListener('load', function () {
  setTimeout(function () {
    var iap = window.AppMintIAP;
    if (iap && !iap.started) {
      console.warn('AppMintIAP is still waiting: no data-iap-buy button, sell() or start() on this page');
    }
  }, 3000);
});

Copyfunction storeStatus() {
  var iap = window.AppMintIAP;
  if (!iap) return 'web';                            // opened in a normal browser
  if (!iap.started) return 'waiting';                // no product wired yet
  return iap.state().available ? 'ready' : 'unavailable';
}
document.getElementById('store').setAttribute('data-status', storeStatus());

Copyfunction describePass() {
  if (!window.AppMintIAP) return 'Available in the Android app';
  var s = window.AppMintIAP.state();
  if (s.ownedIds.indexOf('season_pass') !== -1) return 'Your season pass is active';
  var p = s.products.season_pass;                       // undefined until Google answers
  if (!p || !p.price) return 'Season pass';
  var every = { P1W: 'week', P1M: 'month', P1Y: 'year' }[p.period] || 'period';
  return 'Season pass — ' + p.price + ' / ' + every;
}
document.getElementById('pass-label').textContent = describePass();

Copyfunction openLevel(n) {
  var s = window.AppMintIAP ? window.AppMintIAP.state() : null;
  var needsPack = n > 10;
  if (needsPack && !(s && s.ownedIds.indexOf('level_pack_2') !== -1)) {
    showShop('level_pack_2');                        // your own screen
    return;
  }
  startLevel(n);
}

Copyif (window.AppMintIAP) {
  var s = window.AppMintIAP.state();
  document.querySelectorAll('.go-ad-free').forEach(function (el) { el.hidden = s.adFree; });

  var list = document.getElementById('price-list');
  Object.keys(s.products).forEach(function (id) {
    var p = s.products[id];
    var li = document.createElement('li');
    li.textContent = id + ': ' + (p.owned ? 'owned' : (p.price || '…')) +
                     (p.type === 'subs' ? ' (subscription)' : '');
    list.appendChild(li);
  });
}

Copyfunction ownedIds() {
  var b = window.WebToApk;
  if (!b || typeof b.getOwnedProducts !== 'function') return [];
  try { return JSON.parse(b.getOwnedProducts()); } catch (e) { return []; }
}

function unlockAll(ids) {
  ids.forEach(function (id) {
    var el = document.querySelector('[data-product="' + id + '"]');
    if (el) el.classList.add('unlocked');
  });
}
unlockAll(ownedIds());

// The owned list changed (launch restore, a new purchase, a refund): the full new list.
window.addEventListener('appmint:owned-changed', function (e) {
  document.querySelectorAll('.unlocked').forEach(function (el) { el.classList.remove('unlocked'); });
  unlockAll(e.detail.products);              // e.detail = {products: ['pro_unlock', ...]}
});

Copyvar NAMES = { pro_unlock: 'Pro features', level_pack_2: 'Levels 11-20', remove_ads: 'No ads' };

function renderMyPurchases() {
  var b = window.WebToApk, ids = [];
  if (b && typeof b.getOwnedProducts === 'function') {
    try { ids = JSON.parse(b.getOwnedProducts()); } catch (e) {}
  }
  var list = document.getElementById('my-purchases');
  list.textContent = '';
  ids.forEach(function (id) {
    var li = document.createElement('li');
    li.textContent = NAMES[id] || id;
    list.appendChild(li);
  });
  document.getElementById('nothing-bought').hidden = ids.length > 0;
}
renderMyPurchases();
window.addEventListener('appmint:owned-changed', renderMyPurchases);

Copyvar TIERS = ['premium_plus', 'premium', 'basic'];     // best first

function currentTier() {
  var b = window.WebToApk, owned = [];
  if (b && typeof b.getOwnedProducts === 'function') {
    try { owned = JSON.parse(b.getOwnedProducts()); } catch (e) {}
  }
  for (var i = 0; i < TIERS.length; i++) if (owned.indexOf(TIERS[i]) !== -1) return TIERS[i];
  return 'free';
}

applyTier(currentTier());
window.addEventListener('appmint:purchase', function () { applyTier(currentTier()); });
window.addEventListener('appmint:owned-changed', function () { applyTier(currentTier()); });

Copyfunction loadPrices(ids) {
  return new Promise(function (resolve) {
    var b = window.WebToApk;
    if (!b || typeof b.getProducts !== 'function') { resolve([]); return; }   // browser
    var requestId = 'prices-' + Date.now();
    window.addEventListener('appmint:products', function handler(e) {
      if (String(e.detail.requestId) !== requestId) return;   // another call's answer
      window.removeEventListener('appmint:products', handler);
      resolve(e.detail.products || []);
    });
    b.getProducts(requestId, JSON.stringify(ids));
  });
}

loadPrices(['pro_unlock', 'coins_500', 'pro_monthly']).then(function (products) {
  products.forEach(function (p) {
    var btn = document.querySelector('[data-product="' + p.productId + '"]');
    if (!btn) return;
    btn.hidden = false;
    btn.textContent = p.owned ? 'Owned' : p.title + ' · ' + p.price + (p.period === 'P1M' ? ' / month' : '');
  });
});

Copyvar PERIODS = { P1W: 'week', P1M: 'month', P3M: '3 months', P6M: '6 months', P1Y: 'year' };

window.addEventListener('appmint:products', function (e) {
  if (e.detail.requestId !== 'plans') return;
  e.detail.products.forEach(function (p) {
    var card = document.querySelector('.plan[data-product="' + p.productId + '"]');
    if (!card || p.type !== 'subs') return;
    card.hidden = false;
    card.querySelector('.price').textContent = p.price + ' / ' + (PERIODS[p.period] || p.period);
    card.classList.toggle('current', p.owned);
  });
});

var b = window.WebToApk;
if (b && typeof b.getProducts === 'function') {
  b.getProducts('plans', JSON.stringify(['pro_weekly', 'pro_monthly', 'pro_yearly']));
}

Copyvar WANTED = ['pro_unlock', 'coins_500', 'pro_monthly'];

window.onAppMintProducts = function (detail) {       // same payload as appmint:products
  if (detail.requestId !== 'store-check') return;
  var found = detail.products.map(function (p) { return p.productId; });
  var missing = WANTED.filter(function (id) { return found.indexOf(id) === -1; });
  if (missing.length) console.warn('Not returned by Google Play: ' + missing.join(', '));
  document.getElementById('store').hidden = found.length === 0;
};

if (window.WebToApk && typeof window.WebToApk.getProducts === 'function') {
  window.WebToApk.getProducts('store-check', JSON.stringify(WANTED));
}

Copyfunction hasPro() {
  var b = window.WebToApk;
  return !!(b && typeof b.isOwned === 'function' && b.isOwned('pro_unlock'));
}

function paint() {
  document.getElementById('pro-features').hidden = !hasPro();
  document.getElementById('buy-pro').hidden = hasPro();
}
paint();

// Ownership changes: a purchase landed, or the launch restore / a refund changed the list.
window.addEventListener('appmint:purchase', paint);
window.addEventListener('appmint:owned-changed', paint);

Copyvar exportWaiting = false;

document.getElementById('export-hd').addEventListener('click', function () {
  var b = window.WebToApk;
  if (!b || typeof b.isOwned !== 'function') { exportStandard(); return; }   // browser
  if (b.isOwned('pro_unlock')) { exportHd(); return; }
  exportWaiting = true;
  b.purchase('pro_unlock');
});

window.addEventListener('appmint:purchase', function (e) {
  if (e.detail.productId === 'pro_unlock' && exportWaiting) {
    exportWaiting = false;
    exportHd();                                  // finish what the user asked for
  }
});

Copyvar PRO_PLANS = ['pro_monthly', 'pro_yearly', 'pro_lifetime'];

function isPro() {
  var b = window.WebToApk;
  if (!b || typeof b.isOwned !== 'function') return false;
  return PRO_PLANS.some(function (id) { return b.isOwned(id); });
}

function paintPlan() { document.body.classList.toggle('pro', isPro()); }
paintPlan();
window.addEventListener('appmint:purchase', paintPlan);
window.addEventListener('appmint:owned-changed', paintPlan);   // an expired subscription or a refund

Copyvar removeAdsBtn = document.getElementById('remove-ads');

function paintPremium(premium) {
  removeAdsBtn.hidden = premium;
  document.body.classList.toggle('premium', premium);
}

var b = window.WebToApk;
paintPremium(!!(b && typeof b.isPremium === 'function' && b.isPremium()));

// Changes later: purchase finished, restore at launch, refund or expired subscription.
window.addEventListener('appmint:premium', function (e) {
  paintPremium(e.detail.premium);            // e.detail = {premium: true | false}
});

Copywindow.onAppMintPremiumChanged = function (info) { paintPremium(info.premium); };   // {premium}

Copyfunction showGameOver(score) {
  document.getElementById('final-score').textContent = score;
  var b = window.WebToApk;
  var premium = !!(b && typeof b.isPremium === 'function' && b.isPremium());
  // Ad-free already, or a plain browser (no ads there): no offer.
  document.getElementById('remove-ads-offer').hidden = premium || !b;
  document.getElementById('game-over').hidden = false;
}

Copyvar b = window.WebToApk;
var buyBtn = document.getElementById('buy-pro');

if (!b || typeof b.purchase !== 'function') {
  buyBtn.hidden = true;                              // browser: nothing to buy here
} else {
  buyBtn.addEventListener('click', function () {
    buyBtn.disabled = true;
    b.purchase('pro_unlock');
  });
}

window.addEventListener('appmint:purchase', function (e) {
  if (e.detail.productId === 'pro_unlock') unlockPro();   // safe to run twice
  buyBtn.disabled = false;
});

window.addEventListener('appmint:purchase-failed', function (e) {
  buyBtn.disabled = false;
  if (e.detail.reason === 'pending') showMessage('Payment pending. It unlocks by itself once Google confirms.');
  else showMessage('Purchase is not available right now (' + e.detail.reason + ').');
});

// A cancel on Google's sheet sends no event: release the button when the page is visible again.
document.addEventListener('visibilitychange', function () { if (!document.hidden) buyBtn.disabled = false; });

Copyvar picked = 'pro_yearly';
document.querySelectorAll('.plan').forEach(function (card) {
  card.addEventListener('click', function () { picked = card.getAttribute('data-product'); });
});

document.getElementById('subscribe').addEventListener('click', function () {
  var b = window.WebToApk;
  if (b && typeof b.purchase === 'function') b.purchase(picked);
});

window.addEventListener('appmint:purchase', function (e) {
  if (/^pro_/.test(e.detail.productId)) unlockPro();        // any plan unlocks Pro
});
window.addEventListener('appmint:purchase-failed', function (e) {
  if (e.detail.reason !== 'not_found') return;
  var card = document.querySelector('.plan[data-product="' + e.detail.productId + '"]');
  if (card) card.hidden = true;
});

Copyvar wantedLevel = null;

function openLevel(n) {
  var b = window.WebToApk;
  var owned = !!(b && typeof b.isOwned === 'function' && b.isOwned('level_pack_2'));
  if (n <= 10 || owned) { startLevel(n); return; }
  if (!b || typeof b.purchase !== 'function') { showMessage('Levels 11-20 are in the Android app.'); return; }
  wantedLevel = n;
  b.purchase('level_pack_2');
}

window.onAppMintPurchase = function (detail) {       // {productId, owned: true}
  if (detail.productId !== 'level_pack_2' || !wantedLevel) return;
  var n = wantedLevel;
  wantedLevel = null;
  startLevel(n);
};

Copywindow.__appmintReplies = window.__appmintReplies || {};
window.__appmintReplies['rc1'] = (r) => console.log(r.ok ? r.customerInfo : r.error);
WebToApk.revenuecat('getCustomerInfo', '{}', 'rc1');

Copywindow.__appmintReplies = window.__appmintReplies || {};
window.__appmintReplies['rc-cfg'] = (r) => {
  if (!r.ok) return console.warn('RevenueCat:', r.error);
  window.__appmintReplies['rc-off'] = (o) => console.log(o.ok ? o.current : o.error);
  WebToApk.revenuecat('getOfferings', '{}', 'rc-off');
};
if (window.WebToApk && WebToApk.revenuecat) {
  WebToApk.revenuecat('configure', JSON.stringify({ appUserId: 'u_42' }), 'rc-cfg');
}

Copywindow.__appmintReplies = window.__appmintReplies || {};
window.__appmintReplies['rc-buy'] = (r) => {
  if (r.ok) return unlock(r.customerInfo.entitlements.active);
  if (r.error === 'foreign_origin') return showMessage('Purchases only work inside the app.');
  if (r.cancelled) return;
  showMessage('Purchase failed: ' + (r.message || r.error));
};
WebToApk.revenuecat('purchase', JSON.stringify({ package: '$rc_monthly' }), 'rc-buy');

Copyvar b = window.WebToApk;
var btn = document.getElementById('remove-ads');

if (!b || typeof b.startRemoveAdsPurchase !== 'function' || b.isPremium()) {
  btn.hidden = true;                          // browser, or already ad-free
} else {
  btn.addEventListener('click', function () {
    btn.disabled = true;
    b.startRemoveAdsPurchase();
  });
}

window.addEventListener('appmint:premium', function (e) {
  if (e.detail.premium) { btn.hidden = true; showMessage('Thank you! Ads are gone.'); }
});

// A cancel on Google's sheet sends no event: release the button when the page is visible again.
document.addEventListener('visibilitychange', function () {
  if (!document.hidden) btn.disabled = false;
});

Copyvar row = document.getElementById('ads-setting');
var btn = row.querySelector('button');
var b = window.WebToApk;

function paintAdsRow(premium) {
  row.querySelector('.status').textContent = premium ? 'Ads removed. Thank you!' : 'Ads are on';
  btn.hidden = premium;
}

if (b && typeof b.startRemoveAdsPurchase === 'function') {
  paintAdsRow(b.isPremium());
  btn.addEventListener('click', function () { b.startRemoveAdsPurchase(); });
  window.onAppMintPremiumChanged = function (info) { paintAdsRow(info.premium); };   // {premium}
} else {
  row.hidden = true;                                  // browser: nothing to sell
}

Copyvar rounds = 0;
var offer = document.getElementById('remove-ads-offer');   // a <dialog>

function onRoundFinished() {
  var b = window.WebToApk;
  if (!b || typeof b.startRemoveAdsPurchase !== 'function' || b.isPremium()) return;
  rounds += 1;
  if (rounds % 3 === 0) offer.showModal();
}

offer.querySelector('.buy').addEventListener('click', function () {
  offer.close();
  window.WebToApk.startRemoveAdsPurchase();   // opened from the player's own tap
});
offer.querySelector('.later').addEventListener('click', function () { offer.close(); });