import os, io, time, json
from ckcc.client import ColdcardDevice
from ckcc.protocol import CCProtocolPacker
from ckcc.cli import real_file_upload
d=ColdcardDevice(sn='/tmp/cksim-3.sock')
def E(c):
    r=d.send_recv(b'EXEC'+c.encode(),encrypt=False); return r.decode() if isinstance(r,(bytes,bytearray)) else r
def K(k): d.send_recv(CCProtocolPacker.sim_keypress(k.encode('ascii')))
def st():
    r=d.send_recv(CCProtocolPacker.hsm_status()); r=r.decode() if isinstance(r,(bytes,bytearray)) else r; return json.loads(r)
S=lambda: E("RV.write(repr(sim_display.story))")
pf=os.path.expanduser('~/cksim/policy.json')
flen,sha=real_file_upload(open(pf,'rb'),d)
d.send_recv(CCProtocolPacker.hsm_start(flen,sha)); time.sleep(1.5)
print('SCREEN1:', S()[:600])
K('y'); time.sleep(1.5)
print('SCREEN2:', S()[:600])
print('ACTIVE_after_y:', st().get('active'))