#!/usr/bin/python3

import pygame
import engine


class ModelViewer:
    def __init__(self, window_size: tuple=(1200, 800), fps: int=60):
        pygame.init()
        self.screen = pygame.display.set_mode(window_size, flags=pygame.RESIZABLE)
        pygame.display.set_caption("Sprite Stacking Model Viewer")

        self.gray = (20, 20, 20)

        self.window_size = window_size
        self.fps = fps
        self.rotating = True
        self.model = engine.Model(size_multiplier=4, sprite_spacing=1)
        self.rotation_cooldown = 5

        self.clock = pygame.time.Clock()

        self.running = True

    def loop(self):
        self.screen.fill(self.gray)

        self.get_events()

        if not self.running:
            return

        if self.rotating:
            if self.rotation_cooldown == 0:
                if self.model.rotation < 360:
                    self.model.rotation += 1

                else:
                    self.model.rotation = 0

                self.model.sprites = self.model.rotate_sprites()
                self.model.surface = self.model.generate_surface()
                self.rotation_cooldown = 1

            else:
                self.rotation_cooldown -= 1

        w, h = self.screen.get_size()
        mw, mh = self.model.surface.get_size()

        self.screen.blit(self.model.surface, (w // 2 - mw // 2, h // 2 - mh // 2))

        pygame.display.update()
        self.clock.tick(self.fps)

    def get_events(self):
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                self.quit()

            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_UP:
                    self.model.sprite_spacing += 1
                    self.model.surface = self.model.generate_surface()

                elif event.key == pygame.K_DOWN:
                    self.model.sprite_spacing -= 1
                    self.model.surface = self.model.generate_surface()

                elif event.key == pygame.K_RIGHT:
                    if not self.rotating:
                        self.model.rotation += 10
                        self.model.sprites = self.model.rotate_model()
                        self.model.surface = self.model.generate_surface()

                elif event.key == pygame.K_LEFT:
                    if not self.rotating:
                        self.model.rotation -= 10
                        self.model.sprites = self.model.rotate_model()
                        self.model.surface = self.model.generate_surface()

                elif event.key == pygame.K_r:
                    self.rotating = not self.rotating

    def quit(self):
        self.running = False


if __name__ == "__main__":
    model_viewer = ModelViewer()

    while model_viewer.running:
        model_viewer.loop()

    print("Bye!")