{% extends 'autosrp/base.html' %}
{% load i18n form_extras %}
{% block content %}
<div class="container py-4">
  <div class="row justify-content-center">
    <div class="col-12 col-lg-10 col-xl-8">
      <div class="card shadow-sm">
        <div class="card-header">
          <h5 class="mb-0">{% trans "Doctrine Reward" %}</h5>
        </div>
        <div class="card-body">
          {% if form.non_field_errors %}
            <div class="alert alert-danger">{{ form.non_field_errors }}</div>
          {% endif %}

          <form method="post" novalidate id="rewardForm">
            {% csrf_token %}

            <div class="row g-3">
              <div class="col-12">
                <label for="id_doctrine_id" class="form-label">{% trans "Doctrine" %}</label>
                {{ form.doctrine_id|add_class:"form-select" }}
                {% if form.doctrine_id.help_text %}
                <div class="form-text">{{ form.doctrine_id.help_text }}</div>
                {% endif %}
                {% if form.doctrine_id.errors %}
                <div class="invalid-feedback d-block">{{ form.doctrine_id.errors|join:", " }}</div>
                {% endif %}
              </div>
              <div class="col-12">
                <label for="id_ship_type_id" class="form-label">{% trans "Ship (from doctrine fits)" %}</label>
                {{ form.ship_type_id|add_class:"form-select" }}
                {% if form.ship_type_id.errors %}
                <div class="invalid-feedback d-block">{{ form.ship_type_id.errors|join:", " }}</div>
                {% endif %}
              </div>
              <div class="col-12 col-md-6">
                <label for="id_base_reward_isk" class="form-label">{{ form.base_reward_isk.label }}</label>
                {{ form.base_reward_isk|add_class:"form-control" }}
                {% if form.base_reward_isk.errors %}
                <div class="invalid-feedback d-block">{{ form.base_reward_isk.errors|join:", " }}</div>
                {% endif %}
              </div>
              <div class="col-12 col-md-6">
                <label for="id_penalty_scheme" class="form-label">{{ form.penalty_scheme.label }}</label>
                {{ form.penalty_scheme|add_class:"form-select" }}
                {% if form.penalty_scheme.errors %}
                <div class="invalid-feedback d-block">{{ form.penalty_scheme.errors|join:", " }}</div>
                {% endif %}
              </div>
              <div class="col-12">
                <label for="id_notes" class="form-label">{{ form.notes.label }}</label>
                {{ form.notes|add_class:"form-control" }}
                {% if form.notes.errors %}
                <div class="invalid-feedback d-block">{{ form.notes.errors|join:", " }}</div>
                {% endif %}
              </div>
            </div>

            <div class="d-flex justify-content-end gap-2 mt-4">
              <a href="{% url 'autosrp:reward-list' %}" class="btn btn-outline-secondary">{% trans "Cancel" %}</a>
              <button class="btn btn-primary">{% trans "Save" %}</button>
            </div>
          </form>
        </div>
      </div>

      <div class="text-muted small mt-3">
        <i class="fa fa-info-circle me-1"></i>
        {% trans "Select a doctrine to load available ships automatically from aa-fittings." %}
      </div>
    </div>
  </div>
</div>

<script>
(function(){
  const doctrineSelect = document.getElementById('id_doctrine_id');
  const shipSelect = document.getElementById('id_ship_type_id');
  const apiUrl = "{% url 'autosrp:api-doctrine-hulls' %}";

  function ensureClass(el, cls) {
    if (!el) return;
    if (!el.classList.contains(cls)) el.classList.add(cls);
  }
  ensureClass(doctrineSelect, 'form-select');
  ensureClass(shipSelect, 'form-select');

  function setShipOptions(hulls, preserveValue) {
    const prev = preserveValue ? shipSelect.value : "";
    shipSelect.innerHTML = "";
    const placeholder = document.createElement('option');
    placeholder.value = "";
    placeholder.textContent = hulls.length ? "— Select a ship —" : "— No fits for this doctrine —";
    shipSelect.appendChild(placeholder);

    hulls.forEach(h => {
      const opt = document.createElement('option');
      opt.value = String(h.id);
      opt.textContent = h.name || ("Type " + h.id);
      shipSelect.appendChild(opt);
    });

    if (preserveValue && prev) {
      const found = Array.from(shipSelect.options).some(o => o.value === prev);
      if (found) shipSelect.value = prev;
    }
  }

  async function loadHullsForDoctrine(did, preserveValue=false) {
    if (!did) { setShipOptions([], false); return; }
    try {
      const url = apiUrl + "?doctrine_id=" + encodeURIComponent(did);
      const resp = await fetch(url, {headers: {'X-Requested-With': 'XMLHttpRequest'}});
      if (!resp.ok) throw new Error("HTTP " + resp.status);
      const data = await resp.json();
      const hulls = Array.isArray(data && data.hulls) ? data.hulls : [];
      setShipOptions(hulls, preserveValue);
    } catch (e) {
      setShipOptions([], false);
    }
  }

  if (doctrineSelect) {
    const currentDid = doctrineSelect.value;
    if (currentDid) loadHullsForDoctrine(currentDid, true);
    doctrineSelect.addEventListener('change', (e) => {
      shipSelect.value = "";
      loadHullsForDoctrine(e.target.value, false);
    });
  }
})();
</script>
{% endblock %}