"""Execution state helpers (decision deduplication, executions.json)."""
import hashlib

__all__ = [
    "default_decision_id",
    "load_executions",
    "save_executions",
    "record_execution_state",
    "get_execution_state",
]

from ..runtime import get_runtime_paths
from .file_utils import load_json_locked, read_modify_write_json, save_json_locked


def _paths():
    return get_runtime_paths()


def default_decision_id(action: str, argv_tail: list[str]) -> str:
    from datetime import datetime

    from .trade_common import CST

    now = datetime.now(CST)
    bucket_min = (now.minute // 15) * 15
    bucket = now.strftime(f"%Y%m%dT%H{bucket_min:02d}")
    raw = f"{bucket}|{action}|{'|'.join(argv_tail)}"
    return hashlib.sha1(raw.encode()).hexdigest()[:16]


def load_executions() -> dict:
    paths = _paths()
    data = load_json_locked(paths.executions_file, paths.executions_lock, {"executions": {}})
    return data.get("executions", {})  # type: ignore[no-any-return]


def save_executions(executions: dict):
    paths = _paths()
    save_json_locked(paths.executions_file, paths.executions_lock, {"executions": executions})


def record_execution_state(decision_id: str, payload: dict):
    paths = _paths()
    read_modify_write_json(
        paths.executions_file,
        paths.executions_lock,
        {"executions": {}},
        lambda data: data.setdefault("executions", {}).__setitem__(decision_id, payload) or data,
    )


def get_execution_state(decision_id: str):
    return load_executions().get(decision_id)