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 tswipe(cdp, x0, x1, y=300, steps=12):
    cdp.send('Input.dispatchTouchEvent',{'type':'touchStart','touchPoints':[{'x':x0,'y':y}]})
    for i in range(1,steps+1):
        cdp.send('Input.dispatchTouchEvent',{'type':'touchMove','touchPoints':[{'x':x0+(x1-x0)*i/steps,'y':y}]})
    cdp.send('Input.dispatchTouchEvent',{'type':'touchEnd','touchPoints':[]})
with sync_playwright() as pw:
    b=pw.chromium.launch()
    ctx=b.new_context(viewport={'width':390,'height':844}, has_touch=True, is_mobile=True)
    pg=ctx.new_page(); cdp=ctx.new_cdp_session(pg)
    pg.goto(URL, wait_until='networkidle'); pg.wait_for_timeout(700)
    print('start:', active(pg))
    tswipe(cdp,320,40); pg.wait_for_timeout(450); print('touch swipe L:', active(pg))
    tswipe(cdp,320,40); pg.wait_for_timeout(450); print('touch swipe L:', active(pg))
    b.close()