#!/usr/bin/python3

import pygame


ignore_errors = False
buttons = {
    "popup_none": []
}
mouse_button_hold = False  # Variable is True, while a mouse button is down to prevent from clicking multiple buttons at a time.


class NotEnoughInformationError(Exception):
    def __init__(self, error):
        super().__init__(error)


class Button:  # Create class Button to make creating buttons easier.
    def __init__(self, position: tuple, size: tuple, function, page: str, mouse_button: str="left", rect: pygame.rect=None, button_type: str="click"):
        self.x, self.y = position  # Make variables class wide
        self.width, self.height = size
        self.function = function
        self.mouse_button = mouse_button
        self.rect = rect
        self.type = button_type

        if not page in buttons:
            buttons[page] = []

        buttons[page].append(self)  # Add button to button-list.

    def check(self, mouse_pos: tuple):  # Check if the button is pressed.
        x = self.x  # Make variable names shorter
        y = self.y

        w = self.width
        h = self.height

        mx, my = mouse_pos

        if self.rect is None:
            if mx >= x and mx <= x + w and my >= y and my <= y + h:
                self.function()  # If button pressed, execute the function.

        else:
            if self.rect.collidepoint((mx, my)):  # Check for collide point of rect
                self.function()


class HoverTitle:
    def __init__(self, position: tuple=None, size: tuple=None, page: str=None, popup: str = None, collideable=None, delay: int=20):
        self.x, self.y = position  # Make variables class wide
        self.width, self.height = size
        self.page = page
        self.popup = popup
        self.collideable = collideable
        self.delay = delay

        if position is None or size is None and collideable is None:
            error = "You have to either pass position and size as argument or something collideable."
            if ignore_errors:
                print()
            raise(NotEnoughInformationError(error))


def check_button(button: Button, pressed: tuple, mouse_button: str, mouse_position: tuple):
    mx, my = mouse_position  # Make variable names shorter

    button_name_to_int = {  # Convert button name to button number for better understanding.
        "left": 0,
        "middle": 1,
        "right": 2
    }

    if pressed[button_name_to_int[mouse_button]]:  # If the selected mouse button is pressed
        if button.mouse_button == mouse_button:  # If the button can be clicked with the selected mouse button
            if button.type == "click":  # If the click has to start on the button
                if not mouse_button_hold:  # If the click just started
                    button.check((mx, my))  # Check if the button is clicked.

            elif button.type == "press":  # If the click can start everywhere outside the button.
                button.check((mx, my))  # Check if the button is pressed.


def check_buttons(mouse_pos: tuple, mouse_buttons, page: str, popups: list=[]):
    global mouse_button_hold  # Make mouse_button_hold global to change it script wide.

    pressed = mouse_buttons  # Make variable names shorter

    for button in buttons[page]:  # Check for all buttons that are on the current page.
        check_button(button, pressed, "left", mouse_pos)  # Check buttons that can be clicked with the left mouse button.
        check_button(button, pressed, "middle", mouse_pos)  # Check buttons that can be clicked with the middle mouse button.
        check_button(button, pressed, "right", mouse_pos)  # Check buttons that can be clicked with the right mouse button.

    for popup in popups:  # Check for all popups
        for button in buttons[popup]:  # Check for all buttons that are on the popup.
            check_button(button, pressed, "left", mouse_pos)  # Check buttons that can be clicked with the left mouse button.
            check_button(button, pressed, "middle", mouse_pos)  # Check buttons that can be clicked with the middle mouse button.
            check_button(button, pressed, "right", mouse_pos)  # Check buttons that can be clicked with the right mouse button.

    if pressed[0] or pressed[1] or pressed[2]:  # If the left, middle or right mouse button is pressed.
        mouse_button_hold = True  # Buttonpress has already begun.