import tkinter as tk
import color
from random import randint

class Circle:
    def __init__(self, canvas: tk.Canvas, x, y, radius):
        self.canvas = canvas
        self.x = x
        self.y = y
        self.radius = radius
        self.value = 3

        self.circle_id = canvas.create_oval(x - radius, y - radius, x + radius, y + radius, outline = ACCENT_COLOR, width = 2)
        self.text_id = canvas.create_text(x, y, text = self.value, fill = ACCENT_COLOR, font = (None, int(radius / 1.5)))

    def delete(self):
        self.canvas.delete(self.circle_id)
        self.canvas.delete(self.text_id)

    def decrement(self):
        self.value -= 1
        self.canvas.itemconfigure(self.text_id, text = self.value)

    def highlight(self, state: bool):
        c = SECONDARY_COLOR if state else ACCENT_COLOR

        self.canvas.itemconfigure(self.circle_id, outline = c)
        self.canvas.itemconfigure(self.text_id, fill = c)

    def isInside(self, x, y):
        dx = x - self.x
        dy = y - self.y
        d = (dx**2 + dy**2)**0.5

        return d <= self.radius

# var
canvas = None
mouse_x = 0
mouse_y = 0
tick = 0.0
STEP_TICK = 60.0

# Circle
circle = None
CIRCLE_RADIUS = 50
SPACE = 5

# Colors
ACCENT_COLOR = color.BROWN
SECONDARY_COLOR = color.GREEN

# Main
def main(c: tk.Canvas):
    global canvas, circle

    # Ini
    circle = None
    canvas = c
    c.bind('<Motion>', motion)

# Loop
def loop(deltatime: float, difficulty: float, end):
    global tick, circle

    # First circle
    if circle == None:
        circle = create_circle()

    # Step
    elif tick >= STEP_TICK:
        # Tick or end?
        if circle.value == 0:
            # Check
            if circle.isInside(mouse_x, mouse_y):
                circle.delete()
                circle = create_circle(difficulty)
                tick = 0.0
                return
            else:
                end()
                return
        else:
            circle.decrement()
            tick = 0.0

    # Highlight
    if circle.isInside(mouse_x, mouse_y):
        circle.highlight(True)
    else:
        circle.highlight(False)


    tick += difficulty

# Circle
def create_circle(difficulty = 1.0):
    # Get
    width, height = int(canvas["width"]), int(canvas["height"])
    radius = CIRCLE_RADIUS / difficulty + 15

    # Border
    x_range = (int(radius + SPACE), int(width - radius - SPACE))
    y_range = (int(radius + SPACE), int(height - radius - SPACE))

    # Create
    return Circle(canvas, randint(x_range[0], x_range[1]), randint(y_range[0], y_range[1]), radius)

# Mouse
def motion(event):
    global mouse_x, mouse_y

    mouse_x = event.x
    mouse_y = event.y