"""Ordered gear evidence extracted from source records without auto-mapping."""

from __future__ import annotations

from dataclasses import dataclass

from .community_sources import EquipmentItem


@dataclass(frozen=True, slots=True)
class GearComponentIdentity:
    role: str
    position: int
    raw_value: str
    source_external_id: str | None


def _role_from_kind(kind: str) -> str:
    value = kind.casefold()
    terms = {
        "удилищ": "rod", "катуш": "reel", "леск": "line", "крюч": "hook",
        "поплав": "float", "груз": "sinker", "монтаж": "rig", "rig": "rig",
        "приманк": "lure", "нажив": "bait", "bait": "bait", "lure": "lure",
    }
    return next((role for term, role in terms.items() if term in value), "other")


def from_equipment(items: tuple[EquipmentItem, ...]) -> tuple[GearComponentIdentity, ...]:
    """Keep source order and raw text; canonical mapping happens only after review."""
    return tuple(
        GearComponentIdentity(
            role=_role_from_kind(item.kind), position=index,
            raw_value=item.name, source_external_id=item.external_id,
        )
        for index, item in enumerate(items)
        if item.name.strip()
    )


def from_catch_fields(*, bait: str | None, rig_type: str | None) -> tuple[GearComponentIdentity, ...]:
    values: list[GearComponentIdentity] = []
    if bait and bait.strip():
        values.append(GearComponentIdentity("lure", len(values), bait.strip(), None))
    if rig_type and rig_type.strip():
        values.append(GearComponentIdentity("rig", len(values), rig_type.strip(), None))
    return tuple(values)