{#- chirp-ui: Icon Button
    Square icon-only button for toolbars and dense UIs.

    Usage:
        from "chirpui/icon_btn.html" import icon_btn

        icon_btn("✕", aria_label="Close")
        icon_btn("⚙", variant="ghost", size="lg", href="/settings", aria_label="Settings")
-#}

{% def icon_btn(icon, variant="", size="", href=none, aria_label="", disabled=false, type="button", cls="",
                hx_get=none, hx_post=none, hx_target=none, hx_swap=none) %}
{% set variant = variant | validate_variant(("", "default", "primary", "ghost", "danger"), "") %}
{% set size = size | validate_variant(("", "sm", "md", "lg"), "") %}
{% set variant_class = " chirpui-icon-btn--" ~ variant if variant else "" %}
{% set size_class = " chirpui-icon-btn--" ~ size if size else "" %}
{% set base = "chirpui-icon-btn" ~ variant_class ~ size_class ~ (" " ~ cls if cls else "") %}
{% if href %}
<a href="{{ href }}" class="{{ base }}" aria-label="{{ aria_label }}"
   {% if disabled %}aria-disabled="true" tabindex="-1"{% end %}>
    <span class="chirpui-icon-btn__icon">{{ icon | icon }}</span>
</a>
{% else %}
<button type="{{ type }}" class="{{ base }}" aria-label="{{ aria_label }}"
        {% if disabled %}disabled{% end %}
        {% if hx_get %}hx-get="{{ hx_get }}"{% end %}
        {% if hx_post %}hx-post="{{ hx_post }}"{% end %}
        {% if hx_target %}hx-target="{{ hx_target }}"{% end %}
        {% if hx_swap %}hx-swap="{{ hx_swap }}"{% end %}>
    <span class="chirpui-icon-btn__icon">{{ icon | icon }}</span>
</button>
{% end %}
{% end %}