{{/*
  The savings calculator: pick the apps you pay for today and your team
  size, and compare their yearly retail cost with the smallest Federated plan
  that replaces every app picked (the highest `tier` among them).
  Input: dict with "key" (unique id), "apps" (name, cost, tier, perSeat,
  selected), "plans" (name, tier, annual; cheapest first), optional "note", "compact" (one result, no cost breakdown) and
  "more" (a link to the full calculator). The totals need JS; without it,
  the app list still shows each app's retail price.
*/}}
{{ $key := .key }}
<form class="savings-calc{{ if .compact }} is-compact{{ end }}" id="{{ $key }}-calc" data-plans="{{ .plans | jsonify }}" onsubmit="return false">
  <fieldset class="calc-apps">
    <legend class="plan-subhead">{{ if .compact }}Which of these do you pay for?{{ else }}Which apps do you pay for today?{{ end }}</legend>
    <div class="calc-app-grid">
      {{ range .apps }}
      <label class="calc-app">
        <input type="checkbox" value="{{ .cost }}" data-tier="{{ .tier }}" data-per-seat="{{ .perSeat }}"{{ if .selected }} checked{{ end }}>
        <span class="calc-app-name">{{ .name }}</span>
        <span class="calc-app-cost">${{ .cost }}{{ if .perSeat }}/person{{ else }} flat{{ end }}</span>
      </label>
      {{ end }}
    </div>
  </fieldset>

  <div class="calc-users">
    <label class="plan-subhead" for="{{ $key }}-users">How many people work at your company?</label>
    <div class="calc-users-row">
      <input type="range" id="{{ $key }}-users" min="1" max="28" step="1" value="2">
      <output class="calc-users-value" for="{{ $key }}-users">10</output>
    </div>
  </div>

  <div class="calc-result" aria-live="polite">
    {{ if not .compact }}
    <div class="calc-stat"><span class="calc-stat-label">Apps replaced</span><span class="calc-stat-value" data-out="count">0</span></div>
    <div class="calc-stat"><span class="calc-stat-label">Their retail cost</span><span class="calc-stat-value" data-out="cost">$0</span><span class="calc-stat-unit">/year</span></div>
    {{ end }}
    <div class="calc-stat is-highlight"><span class="calc-stat-label">You save</span><span class="calc-stat-value" data-out="savings">$0</span><span class="calc-stat-unit">/year on the <span data-out="plan">Good</span> plan</span></div>
    {{ with .more }}<a class="more calc-more" href="{{ .url | relURL }}">{{ .label }}<span class="arrow" aria-hidden="true">→</span></a>{{ end }}
  </div>
  {{ with .note }}<p class="plan-note">{{ . | markdownify }}</p>{{ end }}
</form>
<script>
  (function () {
    var form = document.getElementById('{{ $key }}-calc');
    if (!form) return;
    var plans = JSON.parse(form.dataset.plans || '[]');
    var range = form.querySelector('input[type=range]');
    var shown = form.querySelector('.calc-users-value');
    var fmt = function (n) { return '$' + Math.round(n).toLocaleString('en-US'); };
    function out(name, text) { var el = form.querySelector('[data-out=' + name + ']'); if (el) el.textContent = text; }
    // The slider's 28 steps: 1, then 10–100 by 10, 200–1,000 by 100, 1,500–5,000 by 500.
    function users(step) {
      if (step <= 1) return 1;
      if (step <= 11) return (step - 1) * 10;
      if (step <= 20) return (step - 10) * 100;
      return 1000 + (step - 20) * 500;
    }
    function update() {
      var n = users(+range.value), count = 0, cost = 0, need = 0;
      shown.textContent = n.toLocaleString('en-US') + (+range.value === +range.max ? '+' : '');
      range.setAttribute('aria-valuetext', shown.textContent + ' people');
      form.querySelectorAll('.calc-app input:checked').forEach(function (box) {
        count++;
        need = Math.max(need, plans.findIndex(function (p) { return p.tier === box.dataset.tier; }));
        cost += +box.value * (box.dataset.perSeat === 'true' ? n : 1) * 12;
      });
      out('count', count);
      out('cost', fmt(cost));
      var plan = plans[need] || plans[plans.length - 1] || { name: '', annual: 0 };
      out('savings', fmt(Math.max(0, cost - plan.annual)));
      out('plan', plan.name);
    }
    form.addEventListener('input', update);
    update();
  })();
</script>