import pygame
import sdl2
import sdl2.ext
import sys

# Initialize Pygame
pygame.init()

# Initialize SDL2
if sdl2.SDL_Init(sdl2.SDL_INIT_VIDEO) != 0:
    print(f"SDL2 initialization failed: {sdl2.SDL_GetError().decode('utf-8')}")
    exit(1)

# Screen dimensions
WIDTH, HEIGHT = 640, 480
sdl_window = sdl2.SDL_CreateWindow(b"Pygame with SDL2 Rendering",
                                   sdl2.SDL_WINDOWPOS_CENTERED,
                                   sdl2.SDL_WINDOWPOS_CENTERED,
                                   WIDTH, HEIGHT,
                                   sdl2.SDL_WINDOW_SHOWN)

if not sdl_window:
    print(f"Window creation failed: {sdl2.SDL_GetError().decode('utf-8')}")
    sdl2.SDL_Quit()
    exit(1)

sdl_renderer = sdl2.SDL_CreateRenderer(sdl_window, -1, sdl2.SDL_RENDERER_ACCELERATED)
if not sdl_renderer:
    print(f"Renderer creation failed: {sdl2.SDL_GetError().decode('utf-8')}")
    sdl2.SDL_DestroyWindow(sdl_window)
    sdl2.SDL_Quit()
    exit(1)

# Colors
BLACK = sdl2.ext.Color(0, 0, 0)
WHITE = sdl2.ext.Color(255, 255, 255)
RED = sdl2.ext.Color(255, 0, 0)

# Set up the clock for managing the frame rate
clock = pygame.time.Clock()
font = pygame.font.Font(None, 24)  # Reduce font size for better fit

# Object properties
object_size = 50
object_x = WIDTH // 2
object_y = HEIGHT // 2
object_speed = 5

# Event text
event_text = ""

# Helper function to create SDL texture from Pygame surface
def create_texture_from_surface(surface):
    width, height = surface.get_size()
    texture = sdl2.SDL_CreateTexture(sdl_renderer,
                                     sdl2.SDL_PIXELFORMAT_ARGB8888,
                                     sdl2.SDL_TEXTUREACCESS_STREAMING,
                                     width, height)
    pixels = pygame.image.tostring(surface, "ARGB")
    sdl2.SDL_UpdateTexture(texture, None, pixels, width * 4)
    return texture

# Main loop
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type in [pygame.KEYDOWN, pygame.KEYUP]:
            event_text = f"Event: {pygame.event.event_name(event.type)}, Key: {pygame.key.name(event.key)}"
            print(event_text)

    # Get the current state of all keyboard buttons
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        object_x -= object_speed
    if keys[pygame.K_RIGHT]:
        object_x += object_speed
    if keys[pygame.K_UP]:
        object_y -= object_speed
    if keys[pygame.K_DOWN]:
        object_y += object_speed

    # Ensure the object stays within the screen bounds
    object_x = max(0, min(WIDTH - object_size, object_x))
    object_y = max(0, min(HEIGHT - object_size, object_y))

    # Clear the screen
    sdl2.SDL_SetRenderDrawColor(sdl_renderer, WHITE.r, WHITE.g, WHITE.b, WHITE.a)
    sdl2.SDL_RenderClear(sdl_renderer)

    # Draw the moveable object
    rect = sdl2.SDL_Rect(object_x, object_y, object_size, object_size)
    sdl2.SDL_SetRenderDrawColor(sdl_renderer, RED.r, RED.g, RED.b, RED.a)
    sdl2.SDL_RenderFillRect(sdl_renderer, rect)

    # Calculate and display FPS
    fps = clock.get_fps()
    fps_surface = font.render(f'FPS: {int(fps)}', True, (0, 0, 0))
    fps_texture = create_texture_from_surface(fps_surface)
    sdl2.SDL_RenderCopy(sdl_renderer, fps_texture, None, sdl2.SDL_Rect(10, 10, fps_surface.get_width(), fps_surface.get_height()))

    # Display the event text
    event_surface = font.render(event_text, True, (0, 0, 0))
    event_texture = create_texture_from_surface(event_surface)
    sdl2.SDL_RenderCopy(sdl_renderer, event_texture, None, sdl2.SDL_Rect(10, 50, event_surface.get_width(), event_surface.get_height()))

    # Update the display
    sdl2.SDL_RenderPresent(sdl_renderer)

    # Cap the frame rate at 60 FPS
    clock.tick(60)

    # Destroy textures to avoid memory leaks
    sdl2.SDL_DestroyTexture(fps_texture)
    sdl2.SDL_DestroyTexture(event_texture)

# Clean up and close the SDL2 window
sdl2.SDL_DestroyRenderer(sdl_renderer)
sdl2.SDL_DestroyWindow(sdl_window)
sdl2.SDL_Quit()
pygame.quit()
sys.exit()