{#- chirp-ui: ASCII Indicator Light
    Blinking status lights like old mainframe LEDs.

    Usage:
        from "chirpui/ascii_indicator.html" import indicator, indicator_row

        indicator("online", variant="success", blink=true)
        indicator("error", variant="error", blink="fast")
        indicator("standby", variant="muted")

        call indicator_row()
            indicator("PWR", variant="success", blink=true)
            indicator("NET", variant="success")
            indicator("ERR", variant="error", blink="fast")
            indicator("SYS", variant="warning", blink=true)
        end

    Rows wrap by default for responsive layouts. Use indicator_row(nowrap=true) for a single-line strip.

    Variants: success, warning, error, muted, accent.
    Blink: true (steady pulse), "fast" (alarm), false (solid).
    Glyph: ■ (default), ● (round), ◆ (diamond).
-#}

{% def indicator(label=none, variant="success", blink=false, glyph="square", cls="") %}
{% set variant = variant | validate_variant(("success", "warning", "error", "muted", "accent"), "success") %}
{% set blink_class = " chirpui-ascii-indicator--blink" if blink and blink != "fast" else "" %}
{% set blink_fast = " chirpui-ascii-indicator--blink-fast" if blink == "fast" else "" %}
{% set glyph_char = "●" if glyph == "round" else ("◆" if glyph == "diamond" else "■") %}
<span class="chirpui-ascii-indicator chirpui-ascii-indicator--{{ variant }}{{ blink_class }}{{ blink_fast }}{{ " " ~ cls if cls else "" }}">
    <span class="chirpui-ascii-indicator__light" aria-hidden="true">{{ glyph_char }}</span>
    {% if label %}<span class="chirpui-ascii-indicator__label">{{ label }}</span>{% end %}
</span>
{% end %}

{% def indicator_row(cls="", nowrap=false) %}
<div class="chirpui-ascii-indicator-row{{ " chirpui-ascii-indicator-row--nowrap" if nowrap else "" }}{{ " " ~ cls if cls else "" }}">
    {% slot %}
</div>
{% end %}