import math

from typing import List, Tuple

from PySide6.QtWidgets import QGraphicsItemGroup
from random import randint

from grid.ui.items import SphereGraphicsItem, ArcGraphicsItem, LineGraphicsItem

class Pattern(QGraphicsItemGroup):
    """Common pattern on the sphere grid
    """

    PATTERN_WIDTH = 250
    SPACE_BETWEEN_SPHERE = 60
    
    def __init__(self, top_left_corner_x: int, top_left_corner_y: int) -> None:
        super().__init__()
        # center coordinates of the pattern
        center_x = int((top_left_corner_x + self.PATTERN_WIDTH) / 2)
        center_y = int((top_left_corner_y + self.PATTERN_WIDTH) / 2)

        # center
        self.addToGroup(SphereGraphicsItem(center_x, center_y))
        self.addToGroup(SphereGraphicsItem(0, 0))

        # first cercle
        sphere_on_circle = 4
        points = self.generate_circle_points(center_x, center_y, self.SPACE_BETWEEN_SPHERE, sphere_on_circle)
        for x,y in points:
            self.addToGroup(SphereGraphicsItem(x, y))
        for i in range(sphere_on_circle):
            self.addToGroup(ArcGraphicsItem(center_x, center_y, self.SPACE_BETWEEN_SPHERE, (i*360/sphere_on_circle)%360, ((i+1)*360/sphere_on_circle)%360, self))


        line_start_x = int(center_x + self.SPACE_BETWEEN_SPHERE/2)
        line_start_y = int(center_y + self.SPACE_BETWEEN_SPHERE/2)
        line_end_x = int(center_x + self.SPACE_BETWEEN_SPHERE/2)
        line_end_y = int(center_y + self.SPACE_BETWEEN_SPHERE*1.5)
        self.addToGroup(LineGraphicsItem(line_start_x, line_start_y, line_end_x, line_end_y, self))

        # second cercle
        sphere_on_circle = 8
        points = self.generate_circle_points(center_x, center_y, self.SPACE_BETWEEN_SPHERE*2, sphere_on_circle)
        for x,y in points:
            self.addToGroup(SphereGraphicsItem(x, y))
        for i in range(sphere_on_circle):
            self.addToGroup(ArcGraphicsItem(center_x, center_y, self.SPACE_BETWEEN_SPHERE*2, int(i*360/sphere_on_circle/4)%360, int((i+1)*360/sphere_on_circle)%360, self))
        self.addToGroup(ArcGraphicsItem(center_x, center_y, self.SPACE_BETWEEN_SPHERE*2, 0, 90, self))

        # third cercle
        sphere_on_circle = 8
        points = self.generate_circle_points(center_x, center_y, self.SPACE_BETWEEN_SPHERE*3, sphere_on_circle)
        for x,y in points:
            self.addToGroup(SphereGraphicsItem(x, y))
    
    def generate_circle_points(self, center_x: int, center_y: int, radius: int, n_points: int) -> List[Tuple[int, int]]:
        """generate coordinates of points on a circle equally spaced

        Args:
            center_x (int): center x coordinate
            center_y (int): center y coordinate
            radius (int): circle radius
            n_points (int): number of points on the circle to generate

        Returns:
            List[Tuple[int, int]]: list of points coordinates, (x,y)
        """
        points = []
        angle_step = 2 * math.pi / n_points

        for i in range(n_points):
            theta = i * angle_step
            x = int(center_x + radius * math.cos(theta))
            y = int(center_y + radius * math.sin(theta))
            points.append((x, y))
    
        return points