{%- macro rel(there, here, base) -%}
{%- if here and there is starting_with(base) %}
  {%- for _ in here %}
    {%- if not loop.last %}
      {{- "../" | safe }}
    {%- endif %}
  {%- endfor %}
  {{- there | trim_start_matches(pat=base) | safe }}
  {%- if config.extra.urls_to_index_html and there is ending_with("/") %}
    {{- "index.html" }}
  {%- endif %}
{%- else %}
  {{- there | safe }}
{%- endif %}
{%- endmacro rel -%}

{%- macro get(url, bu="") -%}
{%- if url is starting_with("@") %}
  {{- get_url(path=url) }}
{%- elif url is starting_with("$BASE_URL") %}
  {%- if bu == "" %}{% set bu = get_url(path=``, lang=lang) %}{% endif %}
  {{- bu | safe }}{{ url | trim_start_matches(pat="$BASE_URL") | safe }}
{%- else %}
  {{- url | safe }}
{%- endif %}
{%- endmacro get -%}

{%- macro social_icon(icon, prl=false) -%}
{%- set icon_path = "icons/" ~ icon ~ ".svg" %}
{%- set meta = get_image_metadata(path=icon_path, allow_missing=true) %}
{%- if meta %}
  {%- if prl %}
    {{- get_url(path=icon_path) }}
  {%- else %}
    {{- icon_path | safe }}
  {%- endif %}
{%- else %}
  {{- "https://cdn.jsdelivr.net/npm/simple-icons/icons/" ~ icon ~ ".svg" | safe }}
{%- endif %}
{%- endmacro social_icon -%}

{%- macro cover_image(path, assets) -%}
{%- for asset in assets %}
  {%- if asset is ending_with(path) %}
    {{- asset | safe }}
    {%- break %}
  {%- endif %}
{%- endfor %}
{%- endmacro cover_image -%}