from __future__ import annotations

import json
import sys
from pathlib import Path
from typing import Any


ROOT = Path(__file__).resolve().parents[1]
DEFAULT_JSON = ROOT / "GatherTradingData.json"
VALID_EXECUTION_STATUSES = {"PROPOSAL_ONLY", "EXECUTION_WAIT", "EXECUTION_READY"}
REQUIRED_FIELDS = {
    "account",
    "ticker",
    "name",
    "proposal_type",
    "proposed_limit_price_krw",
    "proposed_price_basis",
    "proposed_quantity",
    "proposed_quantity_basis",
    "stop1_price_krw",
    "stop1_quantity",
    "stop2_price_krw",
    "stop2_quantity",
    "stop3_price_krw",
    "stop3_quantity",
    "tp1_price_krw",
    "tp1_quantity",
    "tp2_price_krw",
    "tp2_quantity",
    "tp3_price_krw",
    "tp3_quantity",
    "execution_status",
    "block_reason",
}


def load_harness(path: Path) -> dict[str, Any]:
    payload = json.loads(path.read_text(encoding="utf-8"))
    if isinstance(payload, dict) and isinstance(payload.get("data"), dict):
        maybe = payload["data"].get("_harness_context")
        if isinstance(maybe, dict):
            return maybe
    return payload


def parse_bool(value: Any) -> bool | None:
    if isinstance(value, bool):
        return value
    if isinstance(value, str):
        lowered = value.strip().lower()
        if lowered in {"true", "1", "y", "yes"}:
            return True
        if lowered in {"false", "0", "n", "no"}:
            return False
    return None


def parse_jsonish(value: Any) -> Any:
    if isinstance(value, (list, dict)):
        return value
    if isinstance(value, str) and value.strip():
        return json.loads(value)
    return None


def validate_rows(rows: Any) -> list[str]:
    errors: list[str] = []
    if not isinstance(rows, list):
        return ["proposal_reference_json: must be a list"]
    for idx, row in enumerate(rows):
        if not isinstance(row, dict):
            errors.append(f"proposal_reference_json[{idx}]: must be an object")
            continue
        missing = sorted(REQUIRED_FIELDS - set(row))
        if missing:
            errors.append(f"proposal_reference_json[{idx}] missing fields: {missing}")
        for field in (
            "proposed_limit_price_krw",
            "proposed_quantity",
            "stop1_price_krw",
            "stop1_quantity",
            "stop2_price_krw",
            "stop2_quantity",
            "stop3_price_krw",
            "stop3_quantity",
            "tp1_price_krw",
            "tp1_quantity",
            "tp2_price_krw",
            "tp2_quantity",
            "tp3_price_krw",
            "tp3_quantity",
        ):
            value = row.get(field)
            if value is not None and not isinstance(value, int):
                errors.append(f"proposal_reference_json[{idx}].{field}: must be integer or null")
        status = row.get("execution_status")
        if status is not None and status not in VALID_EXECUTION_STATUSES:
            errors.append(
                f"proposal_reference_json[{idx}].execution_status invalid: {status!r}"
            )
    return errors


def main() -> int:
    args = sys.argv[1:]
    require = "--require" in args
    positional = [arg for arg in args if arg != "--require"]
    path = Path(positional[0]) if positional else DEFAULT_JSON
    if not path.is_absolute():
        path = ROOT / path

    harness = load_harness(path)
    lock = parse_bool(harness.get("proposal_reference_lock"))
    raw = harness.get("proposal_reference_json")

    if raw is None:
        if require:
            print("PROPOSAL REFERENCE FAIL")
            print("- proposal_reference_json missing")
            return 1
        print("PROPOSAL REFERENCE SKIP: proposal_reference_json not present yet")
        return 0

    if lock is not True:
        if require:
            print("PROPOSAL REFERENCE FAIL")
            print(f"- proposal_reference_lock must be true when proposal_reference_json exists, found={harness.get('proposal_reference_lock')!r}")
            return 1
        print("PROPOSAL REFERENCE SKIP: proposal_reference_json present but proposal_reference_lock is not true")
        return 0

    try:
        rows = parse_jsonish(raw)
    except Exception as exc:
        print("PROPOSAL REFERENCE FAIL")
        print(f"- proposal_reference_json invalid JSON: {exc}")
        return 1

    errors = validate_rows(rows)
    if errors:
        print("PROPOSAL REFERENCE FAIL")
        for err in errors:
            print(f"- {err}")
        return 1

    print(f"PROPOSAL REFERENCE OK: rows={len(rows)}")
    return 0


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