from typing import Iterable, Optional, Sequence, Union, TYPE_CHECKING
import dataclasses
import re

if TYPE_CHECKING:
    from agame.item import ItemInst


def search_item_name(seq: Iterable["ItemInst"], item_name: str) -> Optional["ItemInst"]:
    for item in seq:
        if item.name.lower() == item_name.lower() or item_name.lower() in item.synonyms:
            return item
    return None


def trigger_help_builder(
    actions: Union[str, Sequence[str]], args: Union[str, Sequence[str]] = ()
) -> str:
    actions = (actions,) if isinstance(actions, str) else actions
    args = (args,) if isinstance(args, str) else args

    actions = (
        f"(({actions}))"
        if isinstance(actions, str)
        else "/".join(f"(({a}))" for a in actions)
    )

    def fmt_arg(a: str):
        if "[" in a and "]" in a:
            return f"{{{{{a}}}}}"
        else:
            return a

    if args:
        args = (
            fmt_arg(args)
            if isinstance(args, str)
            else " ".join(fmt_arg(a) for a in args)
        )
        return f"{actions} {args}"
    else:
        return actions