"""nova onboard — generate an env binding from an onboarding request (REQ-181)."""

from __future__ import annotations

import json

from core.onboarding import generate_env_file


def add_parser(subparsers):
    p = subparsers.add_parser("onboard", help="generate an env binding from a request")
    p.add_argument("--request", default=None, help="inline request JSON")
    p.add_argument("request_file", nargs="?", default=None, help="request JSON path")
    p.add_argument("--out", default=None, help="output path (default: stdout)")
    p.add_argument("--template-env", default="dev")
    p.set_defaults(_run=run)


def run(args) -> int:
    request = _load_request(args)
    env = generate_env_file(request, template_env=args.template_env)
    blob = json.dumps(env, indent=2) + "\n"
    print(blob) if args.out is None else open(args.out, "w").write(blob)
    return 0


def _load_request(args):
    return json.loads(args.request) if args.request else json.loads(open(args.request_file).read())


if __name__ == "__main__":
    import sys
    print("use: nova onboard <request.json> [--out env.json]", file=sys.stderr)