{% extends 'generic/_base.html' %}
{% load i18n %}

{% comment %}
Confirmation page for the "Derive design" action (PLAN-design-chains.md §5
phase 1). Available only from an approved design -- Design.is_frozen -- see
views.DesignDeriveView. GET renders this page; POST creates the child design.

Context:
  - object:     the parent Design being derived from
  - form:       DesignDeriveForm (a required "title" CharField, prefilled
                with a "<parent> (derived)" suggestion) -- only present when
                object.is_frozen
  - return_url: where Cancel goes
{% endcomment %}

{% block title %}{% trans "Derive design from" %} {{ object }}{% endblock %}

{% block content %}
  <div class="card">
    <h5 class="card-header">{% trans "Derive design" %}</h5>
    <div class="card-body">
      {% if object.is_frozen %}
        <p>
          {% blocktrans trimmed with title=object %}
            Create a new design based on <strong>{{ title }}</strong>? The new
            design starts in draft status with its "based on" set to this
            design, so it plans on top of everything {{ title }} left behind.
          {% endblocktrans %}
        </p>
        <form method="post">
          {% csrf_token %}
          {{ form.as_p }}
          <button type="submit" class="btn btn-primary">{% trans "Derive" %}</button>
          <a href="{{ return_url }}" class="btn btn-outline-secondary">{% trans "Cancel" %}</a>
        </form>
      {% else %}
        <p class="text-danger">
          {% blocktrans trimmed with title=object %}
            Only an approved design can be derived from. Approve {{ title }}
            first.
          {% endblocktrans %}
        </p>
        <a href="{{ return_url }}" class="btn btn-outline-secondary">{% trans "Back" %}</a>
      {% endif %}
    </div>
  </div>
{% endblock %}