import subprocess, json, os
V='27.0'; DATA=os.path.expanduser('~/cksim/regtest-data')
CLI=os.path.expanduser(f'~/bitcoin-{V}/bin/bitcoin-cli')
def bc(*a, wallet=None):
    base=[CLI,f'-datadir={DATA}','-rpcport=18999','-rpcuser=ck','-rpcpassword=ckms']
    if wallet: base.append(f'-rpcwallet={wallet}')
    r=subprocess.run(base+list(a),capture_output=True,text=True)
    if r.returncode: raise SystemExit(f'{a} FAIL {r.stderr.strip()}')
    return r.stdout.strip()
s1=open(os.path.expanduser('~/cksim/signed1.psbt')).read().strip()
s2=open(os.path.expanduser('~/cksim/signed2.psbt')).read().strip()
comb=bc('combinepsbt', json.dumps([s1,s2]))
fin=json.loads(bc('finalizepsbt', comb))
print('PSBT_COMPLETE:', fin['complete'])
txid=bc('sendrawtransaction', fin['hex'])
print('BROADCAST_TXID:', txid)
mineaddr=bc('getnewaddress', wallet='miner')
bc('generatetoaddress','1',mineaddr, wallet='miner')
tx=json.loads(bc('gettransaction', txid, wallet='ckms23-watch'))
print('CONFIRMATIONS:', tx.get('confirmations'))
print('WATCH_BALANCE_AFTER:', bc('getbalance', wallet='ckms23-watch'))