import subprocess
import pygame
import time
from threading import Thread

# Function to run the Unix command
def run_command():
    result = subprocess.run("cowsay -f $(ls /usr/share/cowsay/cows/ | shuf -n1) $(fortune)", shell=True, capture_output=True, text=True)
    return result.stdout

# Function to update the window with the command output
def update_output():
    global scroll_y
    while True:
        # Get the command output
        output = run_command()

        # Update the text content globally
        global text_content
        text_content = output
        scroll_y = 0

        time.sleep(2)

# Initialize Pygame
pygame.init()

# Set up the window
window_width = 600
window_height = 1024
screen = pygame.display.set_mode((window_width, window_height))
pygame.display.set_caption("Unix Command Output")

# Set up the font and colors
font = pygame.font.SysFont("freemono", 20)
text_color = (255, 255, 255)
bg_color = (0, 0, 0)

# Initialize global variables
text_content = ""
scroll_y = 0  
scroll_speed = 5  

# Function to render text onto the screen
def render_text():
    screen.fill(bg_color)
    lines = text_content.split("\n")
    current_y = scroll_y

    for line in lines:
        # Render each line of text
        text_surface = font.render(line, True, text_color)
        if current_y > window_height:
            break  
        screen.blit(text_surface, (16, current_y))
        current_y += text_surface.get_height()

    pygame.display.flip()

# Handle dragging
is_dragging = False
drag_start_y = 0

def handle_drag(event):
    global is_dragging, drag_start_y, scroll_y
    if event.type == pygame.MOUSEBUTTONDOWN and event.button == 1:
        is_dragging = True
        drag_start_y = event.pos[1]
    elif event.type == pygame.MOUSEBUTTONUP and event.button == 1:
        is_dragging = False
    elif event.type == pygame.MOUSEMOTION and is_dragging:
        drag_distance = event.pos[1] - drag_start_y
        scroll_y += drag_distance
        drag_start_y = event.pos[1]
        scroll_y = max(min(scroll_y, 0), -(len(text_content.split("\n")) * font.get_height()-window_height))
    if (len(text_content.split("\n")) * font.get_height()) < window_height:
        scroll_y = 0

# Create a thread to periodically update the command output
update_thread = Thread(target=update_output)
update_thread.daemon = True
update_thread.start()

# Main game loop
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        handle_drag(event)

    render_text()  
    pygame.time.Clock().tick(30)  

pygame.quit()