from __future__ import annotations

import argparse
import json
from pathlib import Path

from .adapter_contract import adapter_descriptor
from .config import load_config
from .scanner import scan_mailbox


def main(argv: list[str] | None = None) -> int:
    parser = argparse.ArgumentParser(prog="email-connect")
    sub = parser.add_subparsers(dest="command", required=True)

    scan = sub.add_parser("scan-mailbox", help="Scan a return mailbox or fixture directory.")
    scan.add_argument("--config", required=True)
    scan.add_argument("--out", default=None)
    scan.add_argument("--full-rescan", action="store_true")
    scan.add_argument("--since", default=None)
    scan.add_argument("--from", dest="range_from", default=None)
    scan.add_argument("--to", dest="range_to", default=None)
    scan.add_argument("--expected-recipients", default=None)
    scan.add_argument("--expected-recipient-column", default=None)
    scan.add_argument("--report-only-new", action="store_true")
    scan.add_argument("--dry-run", action="store_true")
    scan.add_argument("--fixture-dir", default=None)

    sub.add_parser("adapter-descriptor", help="Print the initial coordination-engine adapter descriptor.")

    args = parser.parse_args(argv)
    if args.command == "adapter-descriptor":
        print(json.dumps(adapter_descriptor(), indent=2, sort_keys=True))
        return 0

    if args.command == "scan-mailbox":
        config = load_config(args.config)
        result = scan_mailbox(
            config,
            output_dir=args.out,
            full_rescan=args.full_rescan,
            report_only_new=args.report_only_new,
            dry_run=args.dry_run,
            fixture_dir=args.fixture_dir,
            since=args.since,
            range_from=args.range_from,
            range_to=args.range_to,
            expected_recipients_path=args.expected_recipients,
            expected_recipient_column=args.expected_recipient_column,
        )
        print(f"scan_id={result.scan.scan_id}")
        print(f"messages_seen={result.scan.messages_seen}")
        print(f"messages_new={result.scan.messages_new}")
        print(f"messages_parsed={result.scan.messages_parsed}")
        print(f"evidence_events_created={result.scan.evidence_events_created}")
        if result.report_path:
            print(f"report_path={Path(result.report_path)}")
        for warning in result.warnings:
            print(f"warning={warning}")
        return 0

    return 2


if __name__ == "__main__":
    raise SystemExit(main())