(function () {
  'use strict';

  var CHECK_SVG = '<svg viewBox="0 0 12 12" fill="none" stroke-width="2" stroke="currentColor">' +
    '<path d="M2 6l3 3 5-6"/></svg>';

  function esc(s) {
    if (window.SoonMemberPay && window.SoonMemberPay.esc) return window.SoonMemberPay.esc(s);
    if (s == null) return '';
    return String(s)
      .replace(/&/g, '&amp;')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;');
  }

  function isPlanFeatureLine(line) {
    if (!line) return false;
    return line.indexOf('到期') < 0
      && line.indexOf('订阅有效期') < 0
      && line.indexOf('订阅周期') < 0
      && line.indexOf('权益一致') < 0;
  }

  function featureItem(text) {
    return '<li><span class="soon-plan-card__check">' + CHECK_SVG + '</span><span>' + esc(text) + '</span></li>';
  }

  function billingSavePercent(items, plan) {
    if (window.SoonMemberPay && window.SoonMemberPay.billingSavePercent) {
      return window.SoonMemberPay.billingSavePercent(items, plan);
    }
    return null;
  }

  function planCardHtml(plan, ctx) {
    ctx = ctx || {};
    var items = ctx.allPlans || [];
    var mode = ctx.mode || 'page';
    var isMember = !!ctx.isMember;
    var currentCode = ctx.currentCode || '';
    var selectedId = ctx.selectedId;

    var feat = plan.is_recommended ? ' soon-plan-card--featured' : '';
    var cur = plan.code === currentCode ? ' soon-plan-card--current' : '';
    var isGate = mode === 'gate';
    var isPicker = mode === 'picker' || isGate;
    var picker = isPicker ? ' soon-plan-card--picker' : '';
    if (isGate) picker += ' soon-plan-card--gate';
    var selected = isPicker && plan.id === selectedId ? ' soon-plan-card--selected' : '';

    var ribbon = plan.is_recommended
      ? '<span class="soon-plan-card__ribbon soon-plan-card__ribbon--rec">推荐</span>'
      : (plan.code === currentCode ? '<span class="soon-plan-card__ribbon soon-plan-card__ribbon--current">当前</span>' : '');
    var savePct = billingSavePercent(items, plan);
    if (savePct) ribbon += '<span class="soon-plan-card__save">省 ' + savePct + '%</span>';
    var badgeCls = ribbon ? ' soon-plan-card--badged' : '';
    if (savePct) badgeCls += ' soon-plan-card--save';

    var period = plan.duration_days > 0
      ? '<span class="soon-plan-card__period">/' + esc(plan.period_label || plan.duration_days + '天') + '</span>'
      : '';
    var features = (plan.features || []).filter(isPlanFeatureLine).map(featureItem).join('');
    var desc = plan.description || '';
    var price = esc(plan.price_display || (plan.price_cents / 100).toFixed(2));

    var inner =
      ribbon +
      '<div class="soon-plan-card__head">' +
      '<div class="soon-plan-card__name">' + esc(plan.name) + '</div>' +
      (desc ? '<p class="soon-plan-card__desc">' + esc(desc) + '</p>' : '') +
      '<div class="soon-plan-card__price-row">' +
      '<span class="soon-plan-card__currency">¥</span>' +
      '<span class="soon-plan-card__price">' + price + '</span>' + period + '</div></div>';
    if (!isGate) {
      inner += '<div class="soon-plan-card__body">' +
        '<ul class="soon-plan-card__features">' + features + '</ul></div>';
    }

    if (isPicker) {
      return '<button type="button" class="soon-plan-card' + feat + cur + badgeCls + picker + selected + '" ' +
        'data-action="pick-plan" data-id="' + plan.id + '" aria-pressed="' + (plan.id === selectedId ? 'true' : 'false') + '">' +
        inner + '</button>';
    }

    var cta = '<button type="button" class="soon-btn soon-plan-card__cta" data-id="' + plan.id +
      '" data-name="' + esc(plan.name) + '" data-price="' + price + '">' +
      (isMember ? '续订' : '立即订阅') + '</button>';
    return '<article class="soon-plan-card' + feat + cur + badgeCls + '">' + inner +
      '<div class="soon-plan-card__foot">' + cta + '</div></article>';
  }

  function plansGridHtml(plans, ctx) {
    return (plans || []).map(function (p) {
      return planCardHtml(p, ctx);
    }).join('');
  }

  window.SoonMemberPlan = {
    isPlanFeatureLine: isPlanFeatureLine,
    planCardHtml: planCardHtml,
    plansGridHtml: plansGridHtml,
  };
})();