#!/bin/bash
# caffeine.sh — toggle caffeine mode by killing/restarting swayidle
# When ON: kill swayidle (no idle lock/screen-off)
# When OFF: restart swayidle with the same timeouts as the Sway session
#
# The "restart" path calls start-swayidle.sh, which is the SAME script
# Sway's config uses (`exec $HOME/.config/sway/start-swayidle.sh`).
# Single source of truth: if you change timeouts, change them in
# start-swayidle.sh and both the session start AND the toggle share them.
# (Earlier this script hardcoded the swayidle command itself, and it
# drifted out of sync with sway/config — toggling caffeine off would
# silently change your lock command and timeout values.)
#
# start-swayidle.sh also handles env restoration: when invoked from
# waybar's on-click, WAYLAND_DISPLAY isn't set, and swayidle silently
# exits without it (which means idle lock is silently dead — the
# worst failure mode because the bar still shows "caffeine off").

FLAG="/tmp/caffeine-inhibit"

if [ -f "$FLAG" ]; then
    # Turn OFF caffeine — restart swayidle
    rm -f "$FLAG"
    killall swayidle 2>/dev/null
    "$HOME/.config/sway/start-swayidle.sh" &
    notify-send -t 2000 "☕ Caffeine OFF" "Idle sleep enabled" 2>/dev/null
else
    # Turn ON caffeine — kill swayidle
    touch "$FLAG"
    killall swayidle 2>/dev/null
    notify-send -t 2000 "☕ Caffeine ON" "Idle sleep disabled" 2>/dev/null
fi