"""Read-only deployed source and health verification; emits no network or device identity."""
import hashlib
import json
import shlex
from remote_support import ROOT, connect, execute

FILES = ['app/main.py', 'app/mobile/session.py', 'app/mobile/protocol.py', 'app/mobile/control.py',
         'app/mobile/wifi.py', 'app/static/index.html', 'app/static/views/device.js', 'FEATURE_UPDATED_AT']


def main():
    client, fields = connect()
    try:
        code, _, _ = execute(client, 'command -v python3 >/dev/null && command -v systemctl >/dev/null')
        if code: raise RuntimeError('Remote tools unavailable')
        program = '''import hashlib,json,urllib.request
from pathlib import Path
names=NAMES
digests={n:hashlib.sha256((Path('/opt/matrix-screen-controller')/n).read_bytes()).hexdigest() for n in names}
s=json.load(urllib.request.urlopen('http://127.0.0.1:8080/api/status',timeout=10))
d=s['screen']['driver_status']
print(json.dumps({'digests':digests,'health':{'mobile_available':s['mobile']['available'],
'active_transport':s['mobile'].get('active_transport'),'driver_available':s['screen']['driver_available'],
'driver_running':d.get('running'),'actual_refresh_rate_hz':d.get('actual_refresh_rate_hz'),
'deadline_misses':d.get('deadline_misses'),'driver_error_absent':not d.get('last_error'),
'feature_updated_at':s['service']['feature_updated_at'],'software_version':s['service']['software_version']}}))
'''.replace('NAMES', repr(FILES))
        code, output, _ = execute(client, 'python3 -c ' + shlex.quote(program), password=fields['密码'])
        if code: raise RuntimeError('Deployment verification failed')
        result = json.loads(output)
        expected = {n: hashlib.sha256((ROOT / '核桃派软件源代码' / n).read_bytes()).hexdigest() for n in FILES}
        if result['digests'] != expected: raise RuntimeError('Deployed source differs from current source')
        code, _, _ = execute(client, 'systemctl is-active --quiet matrix-screen-controller.service')
        if code: raise RuntimeError('Main service is not active')
        print(json.dumps(dict(source_matches=True, service_active=True, **result['health'])))
    finally:
        client.close()


if __name__ == '__main__':
    main()