{% import "edit_macros.html" as edit_macros %}
{% extends "base.html" %}

{% block body %}
{% block edit_form_prefix %}
<div class="ui segment">
<h1 class="ui header">Edit Container Entity</h1>

<form class="ui form" id="edit_container_form" method="POST" action="{% if editgroup %}/editgroup/{{ editgroup.editgroup_id }}{% endif %}/container/{{ existing_ident }}/edit">
{% endblock %}
  {{ form.hidden_tag() }}

  <h3 class="ui dividing header">Editgroup Metadata</h3>
  {{ edit_macros.editgroup_dropdown(form, editgroup, potential_editgroups) }}

  <h3 class="ui dividing header">The Basics</h3>
  <br>
  {{ edit_macros.form_field_inline(form.container_type, "required") }}
  {{ edit_macros.form_field_inline(form.name, "required") }}
  {{ edit_macros.form_field_inline(form.publisher) }}
  {{ edit_macros.form_field_inline(form.issnl) }}
  {{ edit_macros.form_field_inline(form.wikidata_qid) }}

  <br>
  <h3 class="ui dividing header">Homepage URLs</h3>
  <i>Landing page or mirror locations of container as a whole.</i>
  <br><br>
  <div class="list-group" id="url_list" name="url_list">
  {% for cfield in form.urls %}
    <div class="list-group-item ui grid" style="padding-right: 1em;">
      <div class="one wide column middle aligned center aligned sortable-handle" style="padding-bottom: 0px; padding-right: 0px; padding-left: 0px;">
        <i class="arrows alternate vertical icon"></i>
      </div>
      <div class="fourteen wide column" style="padding-bottom: 0px;">
        <div class="field {% if cfield.errors %}error{% endif %}">
          {{ cfield() }}
          {{ edit_macros.form_field_errors(cfield) }}
        </div>
      </div>
      <div class="one wide column right aligned" style="padding-bottom: 0px; padding-left: 0rem;">
        <button type="button" class="ui icon red button delete-url-button"><i class="trash icon"></i></button>
      </div>
    </div>
  {% endfor %}
  </div>
  <br>
  <button type="button" id="add-url-button" class="ui right floated icon green button" style="margin-right: 0.3rem;">
    <i class="plus icon"></i>
  </button>

  <br>
  <h3 class="ui dividing header">Submit</h3>
  {{ edit_macros.form_field_basic(form.edit_description) }}
  This description will be attached to the individual edit, not to the
  editgroup as a whole.
{% block edit_form_suffix %}
  <br><br>
  <input class="ui primary submit button" type="submit" value="Update Container!">
  <p>
  <i>Edit will be part of the current editgroup, which needs to be submited and
  approved before the change is included in the catalog.</i>
</form>
</div>
{% endblock %}
{% endblock %}

{% block postscript %}
<script src="https://cdn.jsdelivr.net/npm/sortablejs@latest/Sortable.min.js"></script>
<script>
<!-- Form code -->
$(document).ready(function() {

  $('.ui.dropdown') .dropdown();

  var fixup_url_numbering = function(group_item) {
    items = Array.from(group_item.querySelectorAll(".list-group-item"))
    for (var i = 0; i < items.length; i++) {
      var item_el = items[i];
      input_el = item_el.querySelectorAll("input")[0];
      //console.log(input_el.id);
      input_el.id = "urls-" + i;
      input_el.name = input_el.id;
      //console.log(input_el.id);
    };
    console.log("re-named url rows up to i=" + i);
  };

  var url_list = document.getElementById('url_list');
  var url_sortable = Sortable.create(url_list, {
    handle: '.sortable-handle',
    animation: 150,
    onSort: function(evt) {
      fixup_url_numbering(url_list);
    },
  });
  fixup_url_numbering(url_list);

  var url_delete_handler = function(ev) {
    row = ev.target.parentNode.parentNode;
    // I don't understand why this hack is needed; maybe because of the sortable stuff?
    if(!row.classList.contains("list-group-item")) {
        row = row.parentNode;
    }
    // console.log(row);
    console.assert(row.classList.contains("list-group-item"));
    row.parentNode.removeChild(row);
    fixup_url_numbering(url_list);
  };

  var attach_url_delete_handler = function(topthing) {
    Array.from(topthing.querySelectorAll(".delete-url-button")).forEach((el) => {
      el.addEventListener("click", url_delete_handler);
    });
  };
  attach_url_delete_handler(document);

  // XXX: really need some way to not duplicate this code from above...
  var url_template = `
  <div class="list-group-item ui grid" style="padding-right: 1em;">
      <div class="one wide column middle aligned center aligned sortable-handle" style="padding-bottom: 0px; padding-right: 0px; padding-left: 0px;">
        <i class="arrows alternate vertical icon"></i>
      </div>
      <div class="fourteen wide column" style="padding-bottom: 0px;">
        <input id="urls-X" name="urls-X" type="text" value="">
      </div>
      <div class="one wide column right aligned" style="padding-bottom: 0px; padding-left: 0rem;">
        <button type="button" class="ui icon red button delete-url-button"><i class="trash icon"></i></button>
      </div>
    </div>
  `;

  var add_url_button = document.getElementById("add-url-button");
  add_url_button.addEventListener("click", function(){
    url_list.insertAdjacentHTML('beforeend', url_template);
    attach_url_delete_handler(url_list.lastElementChild);
    fixup_url_numbering(url_list);
  });

});
</script>
{% endblock %}