feat: shutdown timer display in i3block

i3-configuration/i3blocks/config

@@ -81,6 +81,12 @@ interval=30
 color=#FFFFFF
 
 
+[shutdown_countdown]
+command=~/.config/i3blocks/shutdown_countdown.sh
+interval=60
+markup=pango
+
+
 [time]
 command=echo "  $(date '+%Y-%m-%d %H:%M')"  #  for time (Font Awesome icon)
 interval=1

i3-configuration/i3blocks/shutdown_countdown.sh

@@ -0,0 +1,104 @@
+#!/bin/bash
+# Shutdown countdown status script for i3blocks
+# Shows time remaining until the next shutdown window
+# Dynamically reads shutdown times from the systemd check script
+
+SHUTDOWN_CHECK_SCRIPT="/usr/local/bin/day-specific-shutdown-check.sh"
+
+# Function to extract shutdown hour from the check script
+# Parses lines like "if [[ $current_time_minutes -ge 1260 ]]" where 1260 = 21*60
+get_shutdown_hours() {
+	if [[ ! -f "$SHUTDOWN_CHECK_SCRIPT" ]]; then
+		# Fallback defaults if script not found
+		echo "21 22"
+		return
+	fi
+
+	# Extract the minute thresholds from the script (e.g., 1260 for 21:00, 1320 for 22:00)
+	# The script checks: if [[ $current_time_minutes -ge XXXX ]]
+	# Get unique values - first is Mon-Wed (1260=21:00), second is Thu-Sun (1320=22:00)
+	local thresholds
+	thresholds=$(grep -oP 'current_time_minutes -ge \K\d{4}' "$SHUTDOWN_CHECK_SCRIPT" 2>/dev/null | sort -u)
+
+	if [[ -z "$thresholds" ]]; then
+		echo "21 22"
+		return
+	fi
+
+	local mon_wed_minutes thu_sun_minutes
+	mon_wed_minutes=$(echo "$thresholds" | head -1) # 1260 (smaller = earlier = Mon-Wed)
+	thu_sun_minutes=$(echo "$thresholds" | tail -1) # 1320 (larger = later = Thu-Sun)
+
+	# Convert minutes to hours
+	local mon_wed_hour=$((mon_wed_minutes / 60))
+	local thu_sun_hour=$((thu_sun_minutes / 60))
+
+	echo "$mon_wed_hour $thu_sun_hour"
+}
+
+# Get current time info
+current_hour=$(date +%H)
+current_minute=$(date +%M)
+current_time_minutes=$((10#$current_hour * 60 + 10#$current_minute))
+day_of_week=$(date +%u) # 1=Monday, 7=Sunday
+
+# Get shutdown hours dynamically
+read -r mon_wed_hour thu_sun_hour <<<"$(get_shutdown_hours)"
+
+# Determine shutdown hour based on day of week
+if [[ $day_of_week -ge 1 ]] && [[ $day_of_week -le 3 ]]; then
+	# Monday-Wednesday
+	shutdown_hour=$mon_wed_hour
+else
+	# Thursday-Sunday
+	shutdown_hour=$thu_sun_hour
+fi
+
+shutdown_time_minutes=$((shutdown_hour * 60))
+
+# Check if we're currently in the shutdown window (after shutdown time or before 05:00)
+if [[ $current_time_minutes -ge $shutdown_time_minutes ]] || [[ $current_time_minutes -le 300 ]]; then
+	# We're in shutdown window - show warning
+	echo "⏻ SHUTDOWN"
+	echo "⏻"
+	echo "#FF5555"
+	exit 0
+fi
+
+# Calculate minutes until shutdown
+minutes_until_shutdown=$((shutdown_time_minutes - current_time_minutes))
+
+# Convert to hours and minutes
+hours=$((minutes_until_shutdown / 60))
+minutes=$((minutes_until_shutdown % 60))
+
+# Format output
+if [[ $hours -gt 0 ]]; then
+	time_str="${hours}h ${minutes}m"
+else
+	time_str="${minutes}m"
+fi
+
+# Color based on time remaining
+if [[ $minutes_until_shutdown -le 30 ]]; then
+	# Less than 30 min - red warning
+	color="#FF5555"
+	icon="⏻"
+elif [[ $minutes_until_shutdown -le 60 ]]; then
+	# Less than 1 hour - orange warning
+	color="#FFB86C"
+	icon="⏻"
+elif [[ $minutes_until_shutdown -le 120 ]]; then
+	# Less than 2 hours - yellow
+	color="#F1FA8C"
+	icon="⏻"
+else
+	# More than 2 hours - normal
+	color="#6272A4"
+	icon="⏻"
+fi
+
+# Output for i3blocks (full_text, short_text, color)
+echo "$icon $time_str"
+echo "$icon"
+echo "$color"