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dotfiles/.config/waybar/scripts/hyprsunset_daemon.sh
2025-09-19 00:42:12 +02:00

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#!/usr/bin/env bash
set -euo pipefail
CONF="${XDG_CONFIG_HOME:-$HOME/.config}/hyprsunset/config"
STATE_DIR="${XDG_STATE_HOME:-$HOME/.local/state}/hyprsunset"
LOG_DIR="${XDG_STATE_HOME:-$HOME/.local/state}/hyprsunset"
AUTO_FILE="$STATE_DIR/auto" # "1" = automation ON, "0" = OFF
TEMP_FILE="$STATE_DIR/temp" # last manual/night temp persisted
MODE_FILE="$STATE_DIR/mode" # "day" or "night"
mkdir -p "$STATE_DIR" "$LOG_DIR"
# Defaults
LAT="52.5200"; LON="13.4050"
TEMP_DAY=6500; TEMP_NIGHT=3800
RAMP_DOWN_MIN=45; RAMP_UP_MIN=35
STEP_K=100
FALLBACK_SUNSET="20:30"; FALLBACK_SUNRISE="06:30"
# Load config
[ -r "$CONF" ] && source "$CONF"
cmd() { hyprctl dispatch exec "$1" >/dev/null 2>&1 || true; }
start_hyprsunset() {
local t="$1"
echo -n "$t" > "$TEMP_FILE"
cmd "hyprsunset -t $t"
}
stop_hyprsunset() {
cmd "hyprsunset -x"
pkill -x hyprsunset >/dev/null 2>&1 || true
}
# Compute ramp steps between a and b over minutes, step size STEP_K
ramp_between() {
local from="$1" to="$2" minutes="$3"
local step="${STEP_K}"
local delta=$(( to - from ))
local sign=1
(( delta < 0 )) && sign=-1
local steps=$(( (delta*sign + step - 1) / step )) # ceil
[ "$steps" -lt 1 ] && steps=1
local sleep_s=$(( (minutes*60) / steps ))
local t="$from"
for ((i=1;i<=steps;i++)); do
t=$(( from + sign*i*step ))
# clamp
(( sign == 1 && t > to )) && t="$to"
(( sign == -1 && t < to )) && t="$to"
start_hyprsunset "$t"
sleep "$sleep_s"
done
}
now_hhmm() { date +%H:%M; }
sec_until() {
# returns seconds until HH:MM tomorrow/ today
local target="$1"
local now_s=$(date +%s)
local tgt_s=$(date -d "$(date +%F) $target" +%s)
if (( tgt_s <= now_s )); then
tgt_s=$(( tgt_s + 86400 ))
fi
echo $(( tgt_s - now_s ))
}
have_sunwait() { command -v sunwait >/dev/null 2>&1; }
# Initialize state defaults if missing
[ -r "$AUTO_FILE" ] || echo -n "1" > "$AUTO_FILE" # default: automation ON
[ -r "$TEMP_FILE" ] || echo -n "$TEMP_NIGHT" > "$TEMP_FILE"
[ -r "$MODE_FILE" ] || echo -n "day" > "$MODE_FILE"
log() { printf "[hyprsunset] %s\n" "$*" >&2; }
while :; do
# If automation is OFF, just sleep and retry
if [ "$(cat "$AUTO_FILE" 2>/dev/null || echo 1)" != "1" ]; then
sleep 30
continue
fi
if have_sunwait; then
# Use sunwait to block until the next event
# Decide current solar state quickly
# sunwait 'day' exits 0 if sun is up; 'night' if down
if sunwait day "$LAT" "$LON" >/dev/null 2>&1; then
echo -n "day" > "$MODE_FILE"
# Wait for sunset, then ramp down
log "waiting for SUNSET via sunwait…"
sunwait set "$LAT" "$LON" >/dev/null 2>&1
[ "$(cat "$AUTO_FILE")" = "1" ] || continue
log "SUNSET reached → ramp down ${TEMP_DAY}${TEMP_NIGHT} over ${RAMP_DOWN_MIN}m"
ramp_between "$TEMP_DAY" "$TEMP_NIGHT" "$RAMP_DOWN_MIN"
echo -n "night" > "$MODE_FILE"
# Stay in night until sunrise
log "waiting for SUNRISE via sunwait…"
sunwait rise "$LAT" "$LON" >/dev/null 2>&1
[ "$(cat "$AUTO_FILE")" = "1" ] || continue
log "SUNRISE reached → ramp up ${TEMP_NIGHT}${TEMP_DAY} over ${RAMP_UP_MIN}m"
ramp_between "$TEMP_NIGHT" "$TEMP_DAY" "$RAMP_UP_MIN"
echo -n "day" > "$MODE_FILE"
else
echo -n "night" > "$MODE_FILE"
# We are in night → ramp to night if not already, then wait sunrise
log "night now → ensure at night temp, then wait SUNRISE"
start_hyprsunset "$TEMP_NIGHT"
sunwait rise "$LAT" "$LON" >/dev/null 2>&1
[ "$(cat "$AUTO_FILE")" = "1" ] || continue
log "SUNRISE → ramp up ${TEMP_NIGHT}${TEMP_DAY} over ${RAMP_UP_MIN}m"
ramp_between "$TEMP_NIGHT" "$TEMP_DAY" "$RAMP_UP_MIN"
echo -n "day" > "$MODE_FILE"
fi
else
# Fallback fixed schedule
cur="$(now_hhmm)"
# If day now (before fallback sunset), wait sunset
if [[ "$cur" < "$FALLBACK_SUNSET" && "$cur" > "$FALLBACK_SUNRISE" ]]; then
echo -n "day" > "$MODE_FILE"
secs=$(sec_until "$FALLBACK_SUNSET")
log "fallback: waiting $secs s until sunset ${FALLBACK_SUNSET}"
sleep "$secs"
[ "$(cat "$AUTO_FILE")" = "1" ] || continue
ramp_between "$TEMP_DAY" "$TEMP_NIGHT" "$RAMP_DOWN_MIN"
echo -n "night" > "$MODE_FILE"
else
echo -n "night" > "$MODE_FILE"
secs=$(sec_until "$FALLBACK_SUNRISE")
log "fallback: waiting $secs s until sunrise ${FALLBACK_SUNRISE}"
sleep "$secs"
[ "$(cat "$AUTO_FILE")" = "1" ] || continue
ramp_between "$TEMP_NIGHT" "$TEMP_DAY" "$RAMP_UP_MIN"
echo -n "day" > "$MODE_FILE"
fi
fi
done