{# Provenance fields arrive as "Name <url>", several separated by "; ".
   Rendered as a mono credit line — the one slot no off-the-shelf theme has. #}
{% macro names(raw) %}
  {%- for part in raw.split(';') %}
    {%- set p = part.strip() %}
    {%- if '<' in p %}
      {%- set nm = p.split('<')[0].strip() %}
      {%- set url = p.split('<')[1]|replace('>','')|trim %}
      <a href="{{ url }}" rel="noopener">{{ nm }}</a>
    {%- else %}{{ p }}{% endif %}
    {%- if not loop.last %}, {% endif %}
  {%- endfor %}
{%- endmacro %}

{% macro credits(a) %}
  {%- set rows = [('for', 'for'), ('hiredby', 'hired by'), ('with', 'with'), ('photosby', 'photos by')] %}
  {%- set any = rows | selectattr(0, 'in', a.metadata) | list %}
  {%- if any %}
  <div class="credits">
    {%- for key, label in rows %}{% if a.metadata.get(key) %}
    <div><span class="rel">{{ label }}</span> {{ names(a.metadata.get(key)) }}</div>
    {%- endif %}{% endfor %}
  </div>
  {%- endif %}
{%- endmacro %}

{# A tile. `empty` when no thumbnail survived — about 35 entries are in that
   position, so it degrades to a typographic card rather than a hole. #}
{% macro tile(a, SITEURL) %}
{# assetcheck flags references whose file did not survive #}
{% set thumb = a.metadata.get('thumb') if not a.metadata.get('thumb_missing') else none %}
<div class="item"
     data-category="{{ a.category }}"
     data-project="{{ a.metadata.get('project', '') }}"
     data-year="{{ a.date.year }}"
     data-title="{{ a.title|striptags }}">
  <div class="item-content">
    {% if thumb %}
    {# One image, not two: siblings dim on hover rather than the target
       colourising, so there is no need for a greyscale copy. #}
    <div class="hoverthumb">
      <img src="{{ SITEURL }}{{ thumb }}" alt="{{ a.title|striptags }}" loading="lazy" decoding="async">
    </div>
    {% else %}
    <div class="hoverthumb empty"><span>{{ a.category }}</span></div>
    {% endif %}
    <div class="content">
      <div class="title">{{ a.title }}</div>
      <div class="year">{{ a.date.year }}{% if a.metadata.get('project') %} · {{ a.metadata.get('project') }}{% endif %}</div>
      {% set d = a.summary|striptags|trim %}
      {% if d %}<div class="description">{{ d|truncate(104, true, '…') }}</div>{% endif %}
      {% if a.tags %}<div class="tags">{% for t in a.tags %}<span>{{ t }}</span>{% endfor %}</div>{% endif %}
    </div>
    <a class="cover" href="{{ SITEURL }}/{{ a.url }}" aria-label="{{ a.title|striptags }}"></a>
  </div>
</div>
{% endmacro %}