{% extends "base.html" %}
{% block title %}Nová hra{% endblock %}

{% block body %}
<div class="phone">
  <header class="masthead">
    <div>
      <p class="eyebrow">Počitadlo</p>
      <h1>Kostky</h1>
    </div>
  </header>

  {% if request.args.get('chyba') %}
  <p class="error">{{ request.args.get('chyba') }}</p>
  {% endif %}

  {% if running %}
  <div class="notice">
    <span>Rozehraná hra {{ running }} čeká.</span>
    <a href="{{ url_for('game_view', game_id=running) }}">Pokračovat</a>
  </div>
  {% endif %}

  <form method="post" action="{{ url_for('new_game') }}">
    <p class="eyebrow">Kdo hraje</p>
    <p class="hint">Ťukej jména v pořadí, jak sedíte kolem stolu.</p>

    <div class="chips" id="chips">
      {% for player in players %}
      <button type="button" class="chip" aria-pressed="false" data-name="{{ player.name }}">
        {{ player.name }}<span class="seat"></span>
      </button>
      {% endfor %}
    </div>

    <div class="add-player">
      <input type="text" id="new-name" placeholder="Nový hráč" autocomplete="off">
      <button type="button" id="add">Přidat</button>
    </div>

    <div class="field" style="margin-top: 1.5rem">
      <label for="final">Cílové skóre</label>
      <input type="number" name="final_score" id="final" value="{{ final_score }}" inputmode="numeric">
    </div>

    <div id="chosen"></div>
    <button class="btn" type="submit">Začít hru</button>
  </form>

  <p class="footer">
    <a href="{{ url_for('board_redirect') }}">Zápisník</a>
    <a href="{{ url_for('hall') }}">Síň slávy</a>
  </p>
</div>

<script>
  const chips = document.getElementById("chips");
  const chosen = [];

  function render() {
    for (const chip of chips.querySelectorAll(".chip")) {
      const seat = chosen.indexOf(chip.dataset.name);
      chip.setAttribute("aria-pressed", seat > -1);
      chip.querySelector(".seat").textContent = seat > -1 ? seat + 1 : "";
    }

    // Pořadí odeslaných polí je pořadí u stolu.
    document.getElementById("chosen").replaceChildren(...chosen.map(name => {
      const field = document.createElement("input");
      field.type = "hidden";
      field.name = "player";
      field.value = name;
      return field;
    }));
  }

  chips.addEventListener("click", event => {
    const chip = event.target.closest(".chip");
    if (!chip) return;

    const seat = chosen.indexOf(chip.dataset.name);
    if (seat > -1) chosen.splice(seat, 1);
    else chosen.push(chip.dataset.name);
    render();
  });

  const field = document.getElementById("new-name");

  function addPlayer() {
    const name = field.value.trim();
    if (!name) return;

    if (!chips.querySelector(`[data-name="${CSS.escape(name)}"]`)) {
      const chip = document.createElement("button");
      chip.type = "button";
      chip.className = "chip";
      chip.dataset.name = name;
      chip.append(name, Object.assign(document.createElement("span"), { className: "seat" }));
      chips.append(chip);
    }

    if (!chosen.includes(name)) chosen.push(name);
    field.value = "";
    render();
  }

  document.getElementById("add").addEventListener("click", addPlayer);
  field.addEventListener("keydown", event => {
    if (event.key === "Enter") { event.preventDefault(); addPlayer(); }
  });
</script>
{% endblock %}