updating wallpaper with a cycle 7am and 8pm

hypr/wallpaper-cycle.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+DAY_HOUR=7
+NIGHT_HOUR=20
+
+DAY_WALL="$HOME/.config/hypr/paper/day.jpg"
+NIGHT_WALL="$HOME/.config/hypr/paper/night.jpg"
+
+apply_day() {
+    hyprctl hyprpaper wallpaper "DP-2,$DAY_WALL" &>/dev/null
+    hyprctl hyprpaper wallpaper "HDMI-A-1,$DAY_WALL" &>/dev/null
+}
+apply_night() {
+    hyprctl hyprpaper wallpaper "DP-2,$NIGHT_WALL" &>/dev/null
+    hyprctl hyprpaper wallpaper "HDMI-A-1,$NIGHT_WALL" &>/dev/null
+}
+
+apply_now() {
+    hour=$(date +%H)
+    if (( hour >= DAY_HOUR && hour < NIGHT_HOUR )); then
+        apply_night
+        echo "night"
+    else
+        apply_day
+        echo "day"
+    fi
+}
+
+# --- FAST START ---
+current_mode=$(apply_now)
+
+# If hyprpaper wasn't ready yet, retry once shortly after
+sleep 0.5
+current_mode=$(apply_now)
+
+# --- MAIN LOOP ---
+while true; do
+    hour=$(date +%H)
+
+    if (( hour >= DAY_HOUR && hour < NIGHT_HOUR )); then
+        [[ "$current_mode" != "day" ]] && current_mode=$(apply_now)
+    else
+        [[ "$current_mode" != "night" ]] && current_mode=$(apply_now)
+    fi
+
+    # sleep until next minute boundary (feels instant at change)
+    sleep $((60 - $(date +%S)))
+done