from __future__ import annotations

from dataclasses import dataclass, field

from engine.character import BodyPart


@dataclass(frozen=True)
class AbilityDef:
    """An ability a species can perform, gated on the body parts it needs to work."""

    id: str
    name: str
    required_slots: tuple[str, ...] = ()


@dataclass(frozen=True)
class SpeciesDef:
    """A species/preset a Character is based off: default anatomy + blood-loss thresholds."""

    id: str
    name: str
    genders: list[str] = field(default_factory=list)  # open marker: species defines its own valid gender values
    default_body_parts: list[BodyPart] = field(default_factory=list)
    default_organs: list[str] = field(default_factory=list)  # organ_def ids; placed by each organ's own host_slot
    body_type: str = "biped"  # coarse anatomical shape (e.g. "biped", "quadruped") - gates which
    # clothing fits at all, regardless of arm count; see ItemDef.compatible_body_types
    abilities: list[AbilityDef] = field(default_factory=list)
    blood_danger_threshold: float = 50.0  # % blood remaining
    blood_critical_threshold: float = 25.0
    health_item_compatibility: list[str] = field(default_factory=list)  # placeholder for future health-item tagging