from playwright.sync_api import sync_playwright
URL='https://seaside.pacim.de/checkin.php?b=115156&h=fcfd0fc0663af8e93edbbeeea0b80abd'

def active(pg): return pg.eval_on_selector('.tabbar .tab.active','e=>e.getAttribute("data-tab")')
def tx(pg): return pg.eval_on_selector('#ci-track','e=>e.style.transform')

def swipe(pg, x0, x1, y=380):
    pg.mouse.move(x0, y); pg.mouse.down()
    steps=10
    for i in range(1, steps+1):
        pg.mouse.move(x0 + (x1-x0)*i/steps, y + (2 if i%2 else -2))
    pg.mouse.up(); pg.wait_for_timeout(450)

with sync_playwright() as pw:
    b=pw.chromium.launch()
    pg=b.new_page(viewport={'width':400,'height':820}, device_scale_factor=2)
    pg.goto(URL, wait_until='networkidle'); pg.wait_for_timeout(700)
    print('start active:', active(pg), tx(pg))
    swipe(pg, 320, 40);  print('swipe left -> ', active(pg), tx(pg))
    swipe(pg, 320, 40);  print('swipe left -> ', active(pg), tx(pg))
    swipe(pg, 60, 340);  print('swipe right-> ', active(pg), tx(pg))
    # small drag (below threshold) should snap back
    swipe(pg, 200, 170); print('tiny drag  -> ', active(pg), tx(pg))
    b.close()