Shutdown Scheduler for Klipper

shutdown.sh

#!/bin/bash

sleep 30
shutdown now

shutdown_scheduler.cfg

# Shutdown Scheduler

[gcode_shell_command kill_host]
command: sh ~/printer_data/config/shutdown.sh

[gcode_macro SCHEDULE_SHUTDOWN]
description: Schedule shutdown for after print completes
variable_do_shutdown: 0
gcode:
    SET_GCODE_VARIABLE MACRO=SCHEDULE_SHUTDOWN VARIABLE=do_shutdown VALUE=1

[gcode_macro CANCEL_SHUTDOWN]
description: Cancel scheduled shutdown
gcode:
    SET_GCODE_VARIABLE MACRO=SCHEDULE_SHUTDOWN VARIABLE=do_shutdown VALUE=0

[gcode_macro END_PRINT]
    {% set X_MAX = printer.toolhead.axis_maximum.x|default(100)|float %}
    {% set Y_MAX = printer.toolhead.axis_maximum.y|default(100)|float %}

    #Fix-up extruder
    G91                                            
    G1 E-2 F2700                                    
    G1 E-1.5 Z0.2 F2400                        
    G1 X5 Y5 F6000                               
    G1 Z10                                     
    G90                                        

    #Present print
    G1 Z{printer.toolhead.position.z + 10} F600
    G1 X{X_MAX / 2} Y{Y_MAX} F6000
    M106 S0                                      
    M104 S0                                       
    M140 S0                                 
    M109 S60
    #Disable Steppers
    M84 X Y E    
    {% set scheduled_shutdown = printer["gcode_macro SCHEDULE_SHUTDOWN"].do_shutdown %}
    {% if scheduled_shutdown == 1 %}
        RUN_SHELL_COMMAND CMD=kill_host
    {% endif %}