countdown input working

main.py

@@ -2,6 +2,7 @@
 import tkinter as tk
 import os
 from datetime import datetime 
+import math
 
 def get_sec_to_time(h, m, hh, mm):
     now = datetime.now()
@@ -14,18 +15,27 @@ def get_sec_to_time(h, m, hh, mm):
         dm = m-mm
         sec = abs(dh*3600+dm*60)
 
-    #print("Current Time =", hh, mm)
-    #print("Selected Time =", h, m)
-    #print("Result =", sec)
+    return sec
 
-    seconds = now.timestamp()
-    test = now.fromtimestamp(seconds)
-    test2 = now.fromtimestamp(seconds + sec)
-    #print("Current time =", str(test).split(" ")[1])
-    #print("Calculated time", str(test2).split(" ")[1])
+def calc_sec_to_time(sec):
+    h=sec//3600
+    m=(sec%3600)//60
+    return h, m
 
-    return sec
+def sum_time_to_current_time(h, m):
+    now = datetime.now()
+    ch = int(now.strftime("%H"))
+    cm = int(now.strftime("%M"))
 
+    res_h = ch + h
+
+    mm = cm + m
+    res_m = mm
+    if mm > 59:
+        res_h += 1
+        res_m = mm - 60
+
+    return res_h, res_m
 
 def set_time():
     now = datetime.now()
@@ -41,19 +51,41 @@ def cancel_time():
     os.system("shutdown -a")
 
 def cicle_hours():
+    check_0_val.set(True)
+    check_1_val.set(False)
     selected_hour = int(spin_hour.get())
     if selected_hour < 0:
         hour.set(23)
     elif selected_hour > 23:
         hour.set(0)
 
 def cicle_min():
+    check_0_val.set(True)
+    check_1_val.set(False)
     selected_min = int(spin_min.get())
     if selected_min < 0:
         min.set(59)
     elif selected_min > 59:
         min.set(0)
 
+def cicle_hours_disc():
+    check_0_val.set(False)
+    check_1_val.set(True)
+    selected_hour_disc = int(spin_hour_disc.get())
+    if selected_hour_disc < 0:
+        hour_disc.set(23)
+    elif selected_hour_disc > 23:
+        hour_disc.set(0)
+
+def cicle_min_disc():
+    check_0_val.set(False)
+    check_1_val.set(True)
+    selected_min_disc = int(spin_min_disc.get())
+    if selected_min_disc < 0:
+        min_disc.set(59)
+    elif selected_min_disc > 59:
+        min_disc.set(0)
+
 def check_0_trigger():
     if not check_0_val.get():
         check_0_val.set(True)
@@ -65,7 +97,34 @@ def check_1_trigger():
         check_1_val.set(True)
         return
     check_0_val.set(False)
-
+
+def update_time():
+    if check_0_val.get():
+        update_countdown()
+    else:
+        update_normal_time()
+    root.after(1000, update_time)
+
+def update_normal_time():
+    selected_hour_disc = int(spin_hour_disc.get())
+    selected_min_disc = int(spin_min_disc.get())
+    h, m = sum_time_to_current_time(selected_hour_disc, selected_min_disc)
+    hour.set(h)
+    min.set(m)
+
+def update_countdown():
+    now = datetime.now()
+
+    selected_hour = int(spin_hour.get())
+    selected_min = int(spin_min.get())
+
+    sec = get_sec_to_time(selected_hour, selected_min, int(now.strftime("%H")), int(now.strftime("%M")))
+
+    h, m = calc_sec_to_time(sec)
+
+    hour_disc.set(h)
+    min_disc.set(m)
+
 
 root = tk.Tk()
 root.resizable(False, False)
@@ -97,16 +156,17 @@ def check_1_trigger():
 
 hour_disc = tk.StringVar(root)
 hour_disc.set(_now.strftime("%H"))
-spin_hour_disc = tk.Spinbox(frm, increment=1, from_=-1, to=24, textvariable=hour, command=cicle_hours)
+spin_hour_disc = tk.Spinbox(frm, increment=1, from_=-1, to=24, textvariable=hour_disc, command=cicle_hours_disc)
 spin_hour_disc.grid(column=0, row=3)
 
 min_disc = tk.StringVar(root)
 min_disc.set(_now.strftime("%M"))
-min_disc = tk.Spinbox(frm, increment=1, from_=-1, to=60, textvariable=min, command=cicle_min)
-min_disc.grid(column=1, row=3)
+spin_min_disc = tk.Spinbox(frm, increment=1, from_=-1, to=60, textvariable=min_disc, command=cicle_min_disc)
+spin_min_disc.grid(column=1, row=3)
 
 time_btn = tk.Button(frm, text="Schedule shutdown", command=set_time).grid(column=0, row=4)
 
 cancel_btn = tk.Button(frm, text="Cancel shutdown", command=cancel_time).grid(column=1, row=4)
 
+update_time()
 root.mainloop()