{% extends "base.html" %}

{#- What a delete would take with it, counted before anything is written.

    A confirmation that only says "this cannot be undone" asks a question nobody
    can answer. The one people actually have is what happens to the rows
    underneath, and that is the difference between a confirmation and a trap. -#}

{% macro related_list(groups) %}
  <ul class="ff-related-list">
    {% for group in groups %}
      <li class="ff-related-list__item">
        <div class="ff-related-list__head">
          {% if group.url %}
            <a class="ff-related-list__model" href="{{ group.url }}">{{ group.title }}</a>
          {% else %}
            <span class="ff-related-list__model">{{ group.title }}</span>
          {% endif %}
          <span class="ff-badge">{{ group.count }}{% if group.truncated %}+{% endif %}</span>
        </div>
        {% if group.samples %}
          <p class="ff-related-list__names">
            {{ group.samples|join(", ") }}{% if group.more %},
              {{ _("and {n} more", n=group.more) }}{% if group.truncated %}+{% endif %}{% endif %}
          </p>
        {% endif %}
      </li>
    {% endfor %}
  </ul>
{% endmacro %}

{% block content %}
  <div class="ff-page-header">
    <div class="ff-page-header__text">
      <h1 class="ff-h1">{{ _("Delete {name}", name=model_singular|lower) }}</h1>
      <p class="ff-muted ff-mt-2">{{ _("This cannot be undone.") }}</p>
    </div>
  </div>

  <div class="ff-card">
    <div class="ff-card__body ff-stack">
      <p>{{ _("Delete {name}?", name=label) }}</p>

      {% set protected = related | selectattr("effect", "equalto", "protect") | list %}
      {% set cascaded = related | selectattr("effect", "equalto", "delete") | list %}
      {% set cleared = related | selectattr("effect", "equalto", "clear") | list %}

      {% if protected %}
        {# The database would refuse this, so the button is not offered. Failing
           here with a sentence beats failing inside the transaction with a
           constraint violation nobody can act on. #}
        <div class="ff-alert ff-alert--danger">
          <div>
            <div class="ff-alert__title">{{ _("Other records require this one") }}</div>
            <p class="ff-mt-2">
              {{ _("Remove or reassign these first, then delete this record.") }}
            </p>
            {{ related_list(protected) }}
          </div>
        </div>
      {% endif %}

      {% if cascaded %}
        <div class="ff-alert ff-alert--warning">
          <div>
            <div class="ff-alert__title">{{ _("These records will be deleted too") }}</div>
            {{ related_list(cascaded) }}
          </div>
        </div>
      {% endif %}

      {% if cleared %}
        {# Not a deletion. Saying so plainly is the point: a nullable foreign key
           means the rows survive with the column emptied, and warning that they
           will be deleted would be a lie in the other direction. #}
        <div class="ff-alert ff-alert--info">
          <div>
            <div class="ff-alert__title">{{ _("These records will be kept, without the link") }}</div>
            {{ related_list(cleared) }}
          </div>
        </div>
      {% endif %}

      {% if not related and cascades %}
        {# Nothing points at this row today, but the model declares relations
           that would go with it. Worth saying, so the absence of a warning is
           not read as a promise. #}
        <div class="ff-alert ff-alert--warning">
          <div>
            <div class="ff-alert__title">{{ _("Related records will be deleted too") }}</div>
            <ul class="ff-mt-2">
              {% for relation in cascades %}
                <li>{{ relation }}</li>
              {% endfor %}
            </ul>
          </div>
        </div>
      {% endif %}

      <form class="ff-row" method="post" action="{{ action_url }}">
        <input type="hidden" name="{{ csrf_field }}" value="{{ csrf_token }}" />
        {% if not blocked %}
          <button class="ff-btn ff-btn--danger" type="submit">
            {{ _("Yes, delete this {name}", name=model_singular|lower) }}
          </button>
        {% endif %}
        <a class="ff-btn ff-btn--ghost" href="{{ cancel_url }}">
          {{ _("Cancel") if not blocked else _("Back") }}
        </a>
      </form>
    </div>
  </div>
{% endblock %}