import threading
import time
import os
import signal

import pyprctl


slides = []
current_slide = 0

slides.append(("static", """Herzlich
Willkommen,
zur 26. Auflage
der Tech Talks
des Kassel Code
Meetups in der
Caricatura Bar"""))

slides.append(("static", """
Die Agenda fuer
Heute:

19:15 - 19:30
Begruessung

19:30 - 20:00
Talk No 1
Goodbye
Hydration – 
Resumable Pages
mit Qwik
Entdecke die
Macht der
Webcomponents
- Sven

20:00 - 20:30
Talk No 2
Capture The Flag
- Marlon

20:30 - 21:00
Talk No 3
Reverse
Engineering
old
Datastructures
From System
Programming 
To The Web
and back!
- Enno

21:00 - 21:30
Pizza

21:30 - 22:00
Whats Next
"""))

slides.append(("walking", """  ______      ____      _   __           ___
 /_  __/___ _/ / /__   / | / /___       <  /
  / / / __ `/ / //_/  /  |/ / __ \      / / 
 / / / /_/ / / ,<    / /|  / /_/ /     / /  
/_/  \__,_/_/_/|_|  /_/ |_/\____(_)   /_/   """))

slides.append(("walking", """  ______      ____      _   __           ___ 
 /_  __/___ _/ / /__   / | / /___       |__ |
  / / / __ `/ / //_/  /  |/ / __ \      __/ /
 / / / /_/ / / ,<    / /|  / /_/ /     / __/ 
/_/  \__,_/_/_/|_|  /_/ |_/\____(_)   /____/ """))

slides.append(("walking", """  ______      ____      _   __           _____
 /_  __/___ _/ / /__   / | / /___       |__  /
  / / / __ `/ / //_/  /  |/ / __ \       /_ < 
 / / / /_/ / / ,<    / /|  / /_/ /     ___/ / 
/_/  \__,_/_/_/|_|  /_/ |_/\____(_)   /____/  """))

slides.append(("walking", """    ____  ______________   ___    ______
   / __ \/  _/__  /__  /  /   |  / / / /
  / /_/ // /   / /  / /  / /| | / / / / 
 / ____// /   / /__/ /__/ ___ |/_/_/_/  
/_/   /___/  /____/____/_/  |_(_|_|_)   """))


def create_named_thread(name: str, slide: int) -> None:
    pyprctl.set_name(name)
    while current_slide == slide:
        time.sleep(1)


def create_walking_thread(name: str, slide: int) -> None:
    nth = 0
    while current_slide == slide:
        pyprctl.set_name(name[nth % len(name):nth + 15])
        nth = nth + 1
        time.sleep(0.5)


def render_slide() -> None:
    if slides[current_slide][0] == "static":
        for line in slides[current_slide][1].split('\n'):
            threading.Thread(target=create_named_thread, args=(line, current_slide)).start()
    if slides[current_slide][0] == "walking":
        for line in slides[current_slide][1].split('\n'):
            threading.Thread(target=create_walking_thread, args=(line, current_slide)).start()


if __name__ == "__main__":
    render_slide()
    print(f"run: 'top -p {os.getpid()} -H -d 0.5' to view the presentation")
    while True:
        print(slides[current_slide][1])
        nav = input("j -> Next, k -> previous, q -> quit : ")

        if nav =='j':
            current_slide += 1
        if nav == 'k':
            current_slide -= 1
        if nav == 'q':
            os.kill(os.getpid(), signal.SIGTERM)

        if current_slide < 0:
            current_slide = 0
        if current_slide > len(slides) - 1:
            current_slide = len(slides) - 1
        render_slide()