#!/usr/bin/env python3
"""Send qvac.setEnabled over native messaging and fail on INVALID_VERSION."""
import json
import os
import struct
import subprocess
import sys
import threading
import time


def main():
    binpath = sys.argv[1]
    env = os.environ.copy()
    env.setdefault('BRIDGE_SWARM_STORAGE', '/tmp/bs-qvac-packed-selftest')
    proc = subprocess.Popen(
        [binpath],
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        env=env,
    )
    err_chunks = []

    def pump_err():
        while True:
            line = proc.stderr.readline()
            if not line:
                break
            err_chunks.append(line)
            sys.stderr.buffer.write(line)
            sys.stderr.flush()

    threading.Thread(target=pump_err, daemon=True).start()
    time.sleep(1.5)
    msg = json.dumps(
        {
            'id': 1,
            'type': 'capability',
            'payload': {
                'pack': 'qvac',
                'cmd': 'setEnabled',
                'payload': {'enabled': True},
            },
        }
    ).encode()
    proc.stdin.write(struct.pack('<I', len(msg)) + msg)
    proc.stdin.flush()
    hdr = proc.stdout.read(4)
    if len(hdr) < 4:
        print('FAIL: no native-messaging reply', file=sys.stderr)
        proc.kill()
        return 1
    n = struct.unpack('<I', hdr)[0]
    body = proc.stdout.read(n).decode('utf-8', 'replace')
    print('REPLY', body[:4000])
    time.sleep(0.5)
    proc.kill()
    blob = body + b''.join(err_chunks).decode('utf-8', 'replace')
    if 'INVALID_VERSION' in blob:
        print('FAIL: packed host still throws INVALID_VERSION', file=sys.stderr)
        return 1
    print('PASS: no INVALID_VERSION')
    return 0


if __name__ == '__main__':
    sys.exit(main())