main.py

from os import path
from tkinter import *

# Initials variables 
PINK = "#e2979c"
RED = "#e7305b"
GREEN = "#9bdeac"
YELLOW = "#f7f5dd"
FONT_NAME = "Courier"
WORK_MIN = 25
SHORT_BREAK_MIN = 5
LONG_BREAK_MIN = 20
dir = path.dirname(path.abspath(__file__))
reps = 0
timer = None

# Timer reset
def reset_timer():
    global timer
    global reps
    window.after_cancel(timer)
    canvas.itemconfig(timer_text, text="00:00")
    title_label.config(text="Timer", fg=GREEN)
    checkmark_label.config(text="")
    reps = 0 # repeats

# Timer
def start_timer():
    global reps
    reps += 1
    work_sec = WORK_MIN * 60
    short_break_sec = SHORT_BREAK_MIN * 60
    long_break_sec = LONG_BREAK_MIN * 60

    # Make the window pop up when next repeat
    window.state('normal')
    window.lift()

    if reps % 8 == 0:
        countdown(long_break_sec)
        title_label.config(text="Break", fg=RED)
    elif reps % 2 == 0:
        countdown(short_break_sec)
        title_label.config(text="Break", fg=PINK)
    else:
        countdown(work_sec)
        title_label.config(text="Work", fg=GREEN)

# Countdown
def countdown(count):
    count_min = int(count / 60)
    count_sec = count % 60

    if count_sec < 10:
        count_sec = f"0{count_sec}"

    canvas.itemconfig(timer_text, text=f"{count_min}:{count_sec}")

    if count > 0:
        global timer
        timer = window.after(1000, countdown, count - 1)
    else:
        start_timer()
        if reps % 2 == 0:
            marks = checkmark_label["text"] + "✔"
            checkmark_label.config(text=marks)
            

# UI
window = Tk()
window.title("Pomodoro")
window.config(padx=100, pady=50, bg=YELLOW)

title_label = Label(text="Timer", bg=YELLOW, fg=GREEN, font=(FONT_NAME, 36, "bold"))
title_label.grid(column=1, row=0)

canvas = Canvas(width=200, height=224, bg=YELLOW, highlightthickness=0)
tomato_img = PhotoImage(file=f"{dir}/tomato.png")
canvas.create_image(100, 112, image=tomato_img)
timer_text = canvas.create_text(100, 130, text="00:00", fill="white", font=(FONT_NAME, 30, "bold"))
canvas.grid(column=1, row=1)

start_btn = Button(text="Start", highlightthickness=0, command=start_timer)
start_btn.grid(column=0, row=2)

reset_btn = Button(text="Reset", highlightthickness=0, command=reset_timer)
reset_btn.grid(column=2, row=2)

checkmark_label = Label(text="", fg=GREEN, bg=YELLOW, font=(FONT_NAME, 16, "bold"))
checkmark_label.grid(column=1, row=3)

window.mainloop()