#!/bin/bash
# omarchy:summary=Signal running theme-bridge hosts to push the current theme
# omarchy:hidden=true

# Nudge every running Omarchy theme-bridge host to re-read and push the current
# theme, so web-app extensions repaint live on a theme switch instead of waiting
# for the next reload. Called by omarchy-theme-set.
#
# The hosts (omarchy-chromium-theme-host, spoken to over com.omarchy.theme) are
# push-only and can't watch the filesystem, so each drops a pidfile in RUNDIR on
# connect and waits for SIGUSR1. We signal them here. Dead/garbage pidfiles are
# pruned. A no-op when no browser is connected — nothing to signal.

set -uo pipefail

RUNDIR="$XDG_RUNTIME_DIR/omarchy-theme"
[[ -d $RUNDIR ]] || exit 0

shopt -s nullglob
for pidfile in "$RUNDIR"/*.pid; do
  pid=""
  starttime=""
  extra=""
  read -r pid starttime extra <"$pidfile" || true
  current_starttime=""
  [[ $pid =~ ^[0-9]+$ && $starttime =~ ^[0-9]+$ && -z ${extra:-} ]] &&
    current_starttime=$(awk '{print $22}' "/proc/$pid/stat" 2>/dev/null) || true
  if [[ -n $current_starttime && $current_starttime == "$starttime" ]] &&
    kill -USR1 "$pid" 2>/dev/null; then
    continue
  fi
  # Host is gone (or the pidfile is garbage) — prune it.
  rm -f "$pidfile"
done