{#
  The append-columns panel —
  crate::pages::admin::table_definition::ui::ColumnPanelFragment, and what
  workspace.html embeds inside #column-form.

  Staging a column writes nothing, so these buttons swap this panel alone.
  Saving is the form's own submit, which swaps the whole workspace. The field
  names are the ones crate::schema::ColumnForm declares — the same set the
  Add-table builder posts, decoded by the same code.
#}
{#
  Staging swaps this panel and nothing else, so a refused column has nowhere
  else to be reported. When the workspace embeds the panel it reports the
  outcome at the top instead, and this block stays out of the way.
#}
{% import "ui/alert.html" as panel_alert %}
{% import "ui/dialog.html" as panel_dialog %}
{% import "ui/toast.html" as panel_toast %}
{% if standalone_column_panel %}
  {%- if let Some(message) = page.error %}{% call panel_alert::error("Could not add the column", message) %}{% endcall %}{% endif -%}
  {%- if let Some(message) = page.status %}{% call panel_toast::success("Staged", message) %}{% endcall %}{% endif -%}
  {%- if let Some(message) = page.error %}{% call panel_dialog::error("Could not add the column", message) %}{% endcall %}{% endif -%}
{% endif %}

<div class="form-grid">
  <label>{% if page.columns.show_link_target() %}Link alias{% else %}Column name{% endif %}
    <input name="column_name_input" value="{{ page.columns.name_input }}" placeholder="issued_on">
    {% if page.columns.show_link_target() %}<small>The alias is the column name used to distinguish this relationship.</small>{% endif %}
  </label>
  <label>Column type
    <select name="column_type_input"
            hx-post="/admin/tables/columns/builder{{ page.selection.query() }}"
            hx-trigger="change" hx-include="#column-form"
            hx-target="#column-panel" hx-swap="innerHTML"
            hx-vals='{"action": "refresh"}'>
      <option value="">Choose a type</option>
      {% for column_type in column_types %}
        <option value="{{ column_type }}" {% if page.columns.type_input == *column_type %}selected{% endif %}>{% if *column_type == "link" %}FKlink{% else %}{{ column_type }}{% endif %}</option>
      {% endfor %}
    </select>
  </label>

  {% if page.columns.show_temporal_type() %}
    <label>Temporal type
      <select name="temporal_type_input">
        <option value="">Choose a temporal type</option>
        {% for temporal_type in temporal_types %}
          <option value="{{ temporal_type }}" {% if page.columns.temporal_type_input == *temporal_type %}selected{% endif %}>{{ temporal_type }}</option>
        {% endfor %}
      </select>
    </label>
  {% endif %}

  {% if page.columns.show_gtin_type() %}
    <label>GTIN type
      <select name="gtin_type_input">
        <option value="">Choose a GTIN length</option>
        {% for gtin_type in gtin_types %}
          <option value="{{ gtin_type }}" {% if page.columns.gtin_type_input == *gtin_type %}selected{% endif %}>GTIN-{{ gtin_type }}</option>
        {% endfor %}
      </select>
    </label>
  {% endif %}

  {% if page.columns.show_decimal_arguments() %}
    <label>Precision
      <input name="decimal_precision_input" value="{{ page.columns.decimal_precision_input }}"
             inputmode="numeric" placeholder="12">
      <small>Total digits stored, at least 1.</small>
    </label>
    <label>Scale
      <input name="decimal_scale_input" value="{{ page.columns.decimal_scale_input }}"
             inputmode="numeric" placeholder="3">
      <small>Digits after the point, no more than the precision.</small>
    </label>
  {% endif %}

  {% if page.columns.show_link_target() %}
    <label>Referenced table
      <select name="link_table_input">
        <option value="">Choose a table</option>
        {% if !page.global_link_target_tables().is_empty() %}
          <optgroup label="Global">
            {% for table in page.global_link_target_tables() %}
              <option value="{{ table }}" {% if page.columns.link_table_input == *table %}selected{% endif %}>{{ table }}</option>
            {% endfor %}
          </optgroup>
        {% endif %}
        {% if !page.user_link_target_tables().is_empty() %}
          <optgroup label="User-created">
            {% for table in page.user_link_target_tables() %}
              <option value="{{ table }}" {% if page.columns.link_table_input == *table %}selected{% endif %}>{{ table }}</option>
            {% endfor %}
          </optgroup>
        {% endif %}
        {% if !page.system_link_target_tables().is_empty() %}
          <optgroup label="System-created">
            {% for table in page.system_link_target_tables() %}
              <option value="{{ table }}" {% if page.columns.link_table_input == *table %}selected{% endif %}>{{ table }}</option>
            {% endfor %}
          </optgroup>
        {% endif %}
      </select>
      {% if page.global_link_target_tables().is_empty() && page.user_link_target_tables().is_empty() && page.system_link_target_tables().is_empty() %}<small>No eligible tables exist in this scope.</small>{% endif %}
    </label>
  {% endif %}

  {% if page.columns.show_money_options() %}
    <label>Currency
      <input name="column_currency_input" value="{{ page.columns.currency_input }}" list="currency-codes"
             maxlength="3" placeholder="EUR">
    </label>
    <label>Rounding
      <select name="column_rounding_input">
        <option value="none" {% if page.columns.rounding_input != "half-up" %}selected{% endif %}>none</option>
        <option value="half-up" {% if page.columns.rounding_input == "half-up" %}selected{% endif %}>half-up</option>
      </select>
    </label>
  {% endif %}

  {#
    A link is left out rather than defaulted to "no": the server builds an
    index for every foreign key as it adds the column, and refuses a request
    that asks for one on top.
  #}
  {% if page.columns.show_indexing() %}
  <label>Indexing
    <select name="column_indexing_input">
      <option value="no" {% if page.columns.indexing_input != "yes" %}selected{% endif %}>no</option>
      <option value="yes" {% if page.columns.indexing_input == "yes" %}selected{% endif %}>yes</option>
    </select>
  </label>
  {% else if page.columns.pending_is_auto_indexed() %}
  <div class="field-note">
    <span class="field-label">Indexing</span>
    <p class="hint">Indexed automatically — a link is a foreign key, and the server indexes every one of them.</p>
  </div>
  {% endif %}
  <label>Required
    <select name="column_required_input">
      <option value="no" {% if page.columns.required_input != "yes" %}selected{% endif %}>no</option>
      <option value="yes" {% if page.columns.required_input == "yes" %}selected{% endif %}>yes</option>
    </select>
    <small>A row must carry a value for it.</small>
  </label>
  {% if page.columns.show_quantity_ledger() %}
  <label>Quantity ledger
    <select name="column_quantity_ledger_input">
      <option value="no" {% if page.columns.quantity_ledger_input != "yes" %}selected{% endif %}>no</option>
      <option value="yes" {% if page.columns.quantity_ledger_input == "yes" %}selected{% endif %}>yes</option>
    </select>
    <small>{{ page.columns.quantity_ledger_types() }} only.</small>
  </label>
  {% else %}
  <p class="hint">A shared table keeps no books of its own, so it cannot hold a quantity-ledger column.</p>
  {% endif %}
</div>

<button type="button" class="secondary"
        hx-post="/admin/tables/columns/builder{{ page.selection.query() }}"
        hx-include="#column-form" hx-target="#column-panel" hx-swap="innerHTML"
        hx-vals='{"action": "add-column"}'>Stage column</button>

{% if page.columns.added.is_empty() %}
  <p class="hint">No columns staged yet. Describe one above and press <em>Stage column</em>.</p>
{% else %}
  <table class="builder-table">
    <thead><tr><th>Name</th><th>Type</th><th>Indexed</th><th>Options</th><th></th></tr></thead>
    <tbody>
      {% for column in page.columns.added %}
        <tr>
          <td><code>{{ column.name }}</code></td>
          <td>{{ column.data_type }}</td>
          <td>
            {# A compound column expands into schema-managed companions, so
               there is no column of its own name to index. #}
            {% if page.columns.is_indexable(*loop.index0) %}
              <button type="button" class="toggle"
                      hx-post="/admin/tables/columns/builder{{ page.selection.query() }}"
                      hx-include="#column-form" hx-target="#column-panel" hx-swap="innerHTML"
                      hx-vals='{"action": "toggle-index", "index": "{{ loop.index0 }}"}'>
                {% if column.indexed %}[x]{% else %}[ ]{% endif %}
              </button>
            {% else if column.is_indexed() %}
              <span class="tag">indexed automatically</span>
            {% else %}
              <span class="hint">—</span>
            {% endif %}
          </td>
          <td>
            {% if column.required %}<span class="tag">required</span>{% endif %}
            {% if column.quantity_ledger %}<span class="tag">quantity ledger</span>{% endif %}
            {% if !column.currency.is_empty() %}<span class="tag">{{ column.currency }}, {{ column.money_mode.label() }}</span>{% endif %}
          </td>
          <td>
            <button type="button" class="danger"
                    hx-post="/admin/tables/columns/builder{{ page.selection.query() }}"
                    hx-include="#column-form" hx-target="#column-panel" hx-swap="innerHTML"
                    hx-vals='{"action": "remove-column", "index": "{{ loop.index0 }}"}'>Remove</button>
          </td>
        </tr>
      {% endfor %}
    </tbody>
  </table>
{% endif %}

{# The staged columns themselves: one set of fields per column, in order. #}
{% for column in page.columns.added %}
  <input type="hidden" name="column_names" value="{{ column.name }}">
  <input type="hidden" name="column_types" value="{{ column.data_type }}">
  <input type="hidden" name="column_indexed" value="{% if column.indexed %}yes{% else %}no{% endif %}">
  <input type="hidden" name="column_quantity_ledger" value="{% if column.quantity_ledger %}yes{% else %}no{% endif %}">
  <input type="hidden" name="column_required" value="{% if column.required %}yes{% else %}no{% endif %}">
  <input type="hidden" name="column_rounding" value="{{ column.money_mode.label() }}">
  <input type="hidden" name="column_currencies" value="{{ column.currency }}">
{% endfor %}

<div class="form-actions">
  <button type="submit">Add {{ page.columns.added.len() }} column(s) to the table</button>
</div>