import pytest

from clusterview.colors import Color
from clusterview.points import Attribute, Point, PointSet


def test_empty():
    point_set = PointSet(3, 100, 100)

    assert point_set.empty()

def test_clear():
    point_set = PointSet(3, 100, 100)

    point_set.add_point(1, 2, Color.GREY)

    assert len(list(point_set.points)) == 1

    point_set.clear()

    assert len(list(point_set.points)) == 0


def test_add_to_point_set():
    point_set = PointSet(3, 100, 100)

    point_set.add_point(1, 2, Color.GREY)

    points = list(point_set.points)

    p = Point(1, 2, Color.GREY, 3, 100, 100)
    assert len(points) == 1
    assert points[0] == p


def test_add_to_point_set_with_attributes():
    attribute = Attribute("thing", 1)

    point_set = PointSet(3, 100, 100)
    point_set.add_point(2, 3, Color.GREY, attrs=[attribute])

    points = list(point_set.points)

    assert len(points) == 1
    assert len(points[0].attributes) == 1


def test_remove_point_exact_click():
    attribute = Attribute("thing", 1)

    point_set = PointSet(8, 100, 100)
    point_set.add_point(4, 4, Color.GREY, attrs=[attribute])

    point_set.remove_point(4, 4)

    points = list(point_set.points)

    assert len(points) == 0


def test_remove_point_bounding_box():
    """
    This test checks the bounding box hit heuristic.
    """
    attribute = Attribute("thing", 1)

    point_set = PointSet(8, 100, 100)
    point_set.add_point(4, 4, Color.GREY, attrs=[attribute])

    # The click-point (2, 1) will be inside of our point size 8
    # bounding box.
    point_set.remove_point(4, 4)

    points = list(point_set.points)

    assert len(points) == 0


def test_clear_all_selected_points():
    point_set = PointSet(8, 100, 100)
    point_set.add_point(4, 4, Color.GREY)
    point_set.add_point(5, 5, Color.GREY)

    for p in point_set.points:
        p.select()

    selected = 0

    for p in point_set.points:
        if p.selected:
            selected += 1

    assert selected == 2

    point_set.clear_selection()

    unselected = 0

    for p in point_set.points:
        if not p.selected:
            unselected += 1

    assert unselected == 2


def test_groups():
    point_set = PointSet(8, 100, 100)
    point_set.add_point(4, 4, Color.GREY)
    point_set.add_point(5, 5, Color.GREY)
    point_set.add_point(10, 4, Color.BLUE)
    point_set.add_point(30, 5, Color.BLUE)

    p1 = Point(4, 4, Color.GREY, 8, 100, 100)
    p2 = Point(5, 5, Color.GREY, 8, 100, 100)
    p3 = Point(10, 4, Color.BLUE, 8, 100, 100)
    p4 = Point(30, 5, Color.BLUE, 8, 100, 100)

    expected = {
        Color.GREY: [p1, p2],
        Color.BLUE: [p3, p4]
    }

    groups = point_set.groups()

    assert groups == expected