"""Tools scoped to an immutable authorized risk run, not the production database."""
import json
from copy import deepcopy
from langchain_core.tools import tool


def create_risk_tools(context, evidence, native_skills):
    snapshot = deepcopy(context)
    sources = deepcopy(evidence)
    skills = deepcopy(native_skills)

    @tool
    def list_data_cards() -> str:
        """List authorized peer data-card snapshots available for this risk task."""
        return json.dumps([{"index":i,"name":d["card"],"version":d["version"],"records":len(d["records"])} for i,d in enumerate(snapshot.get("peer_datasets",[]))],ensure_ascii=False)

    @tool
    def read_data_card(index: int) -> str:
        """Read one authorized data-card snapshot, including periods and raw evidence."""
        cards = snapshot.get("peer_datasets", [])
        if index < 0 or index >= len(cards):
            return json.dumps({"error":"数据卡不在本次授权范围"},ensure_ascii=False)
        return json.dumps(cards[index],ensure_ascii=False)

    @tool
    def read_checks_and_rules() -> str:
        """Read deterministic Skill outputs, human rules and rule findings for this run."""
        return json.dumps({"values":snapshot.get("scalar_values",{}),"human_rules":snapshot.get("human_rules",[]),"findings":snapshot.get("rule_findings",[]),"evidence":sources},ensure_ascii=False)

    @tool
    def read_selected_skill(skill_id: str) -> str:
        """Read only a native SKILL.md explicitly selected in the published plan."""
        return skills.get(skill_id,"此 Skill 未被所选方案授权")

    return [list_data_cards, read_data_card, read_checks_and_rules, read_selected_skill]