#!/bin/sh
# umbriel-launch PATTERN COMMAND...
# Focus the next workspace window whose app id matches PATTERN (a
# case-insensitive jq regex), cycling through matches on repeated presses;
# with none open, spawn COMMAND. Scratchpad windows are skipped: they have
# their own toggles. Umbriel counterpart of niri-launch / omarchy-cycle.
set -eu

[ $# -ge 2 ] || { echo "usage: umbriel-launch PATTERN COMMAND..." >&2; exit 2; }
pattern=$1
shift

# Matches in a stable order (window id); the one after the focused match, or
# the first when focus is elsewhere. `.active` is the one window with keyboard
# focus; `.focused` is set on every output's last-focused window.
target=$(umbriel windows --json | jq -r --arg p "$pattern" '
    [.[] | select(.scratchpad == "" and (.app_id | test($p; "i")))] | sort_by(.id)
    | if length == 0 then empty
      else (map(.active) | index(true)) as $i
        | if $i == null then .[0].id else .[($i + 1) % length].id end
      end')

if [ -n "$target" ]; then
    exec umbriel msg "window-focus:$target"
fi
exec umbriel msg spawn "$@"