main.py

from tkinter import *
import math

# ---------------------------- CONSTANTS ------------------------------- #
PINK = "#e2979c"
RED = "#e7305b"
GREEN = "#9bdeac"
YELLOW = "#f7f5dd"
FONT_NAME = "Courier"
WORK_MIN = 25
SHORT_BREAK_MIN = 5
LONG_BREAK_MIN = 20

reps = 0
timer = None


# ---------------------------- TIMER RESET ------------------------------- #
def reset_clicked():
    global reps
    window.after_cancel(timer)
    timer_text.config(text="Timer")
    # canvas.delete(canvas_text)
    # canvas.create_text(100, 130, text="00:00", fill="white",
    #                   font=(FONT_NAME, 35, "bold"))
    canvas.itemconfig(canvas_text, text="00:00")
    checkmark_text.config(text="")
    reps = 0

# ---------------------------- TIMER MECHANISM ------------------------------- #


def start_clicked():
    global reps
    reps += 1

    work_sec = WORK_MIN * 60
    short_break_sec = SHORT_BREAK_MIN * 60
    long_break_sec = LONG_BREAK_MIN * 60

    if reps % 8 == 0:
        count_down(long_break_sec)
        timer_text.config(text="Break", font=(
            FONT_NAME, 50), fg=RED, bg=YELLOW)
    elif reps % 2 == 0:
        count_down(short_break_sec)
        timer_text.config(text="Break", font=(
            FONT_NAME, 50), fg=PINK, bg=YELLOW)
    else:
        count_down(work_sec)
        timer_text.config(text="Work", font=(
            FONT_NAME, 50), fg=GREEN, bg=YELLOW)

# ---------------------------- COUNTDOWN MECHANISM ------------------------------- #


def count_down(count):
    global reps
    global timer
    count_min = math.floor(count / 60)
    count_sec = count % 60
    if count_sec < 10:
        count_sec = f"0{count_sec}"
    #count_sec = str(count % 60).zfill(2)

    canvas.itemconfig(canvas_text, text=f"{count_min}:{count_sec}")
    if count > 0:
        timer = window.after(1000, count_down, count - 1)
    else:
        start_clicked()
        # print(reps)
        marks = ""
        work_sessions = math.floor(reps/2)
        for _ in range(work_sessions):
            marks += "✓"
        checkmark_text.config(text=marks)


# ---------------------------- UI SETUP ------------------------------- #
window = Tk()
window.title("Pompdoro Application")
window.config(padx=100, pady=50, bg=YELLOW)
timer_text = Label(text="Timer", font=(FONT_NAME, 50), fg=GREEN, bg=YELLOW)
timer_text.grid(column=1, row=0)

canvas = Canvas(width=200, height=224, bg=YELLOW, highlightthickness=0)
tomato_img = PhotoImage(file="tomato.png")
canvas.create_image(100, 112, image=tomato_img)
canvas.grid(column=1, row=1)

canvas_text = canvas.create_text(
    100, 130, text="00:00", fill="white", font=(FONT_NAME, 35, "bold"))


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

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

checkmark_text = Label(text="✓", font=(FONT_NAME, 24), fg=GREEN, bg=YELLOW)
checkmark_text.grid(column=1, row=3)

window.mainloop()