"""Agent OS skill loader runtime."""

from dataclasses import dataclass, field
from typing import Dict, List


@dataclass
class SkillPackage:
    skill_id: str
    version: str
    capabilities: List[str] = field(default_factory=list)
    enabled: bool = True


class SkillLoader:
    def __init__(self):
        self.skills: Dict[str, SkillPackage] = {}

    def register(self, skill: SkillPackage):
        self.skills[skill.skill_id] = skill

    def validate(self, skill_id: str):
        skill = self.skills.get(skill_id)
        return bool(skill and skill.enabled and skill.version)

    def load_for_capability(self, capability: str):
        return [s for s in self.skills.values() if capability in s.capabilities and s.enabled]

    def disable(self, skill_id: str):
        if skill_id in self.skills:
            self.skills[skill_id].enabled = False