"""适当性判定 → risk_suitability_log 行映射（R-02 P0 契约）。"""

from __future__ import annotations

from typing import Any, Literal

CheckSource = Literal["r02_trade", "r02_chat", "c11_inquiry", "manual"]


def compute_rule_refs(check: dict[str, Any]) -> list[str]:
    """由 check 结果计算 rule_refs（JR-AST/FM 规则编号体系）。

    独立公共函数（AL-05 抽取，main 逻辑不变）：供 build_suitability_log_row
    落库与 service 层 SuitabilityResult.rule_refs 共用，避免两处漂移。
    """
    rule_refs: list[str] = []
    mismatch_type = check.get("mismatch_type") or "not_found"
    if mismatch_type == "risk_level":
        rule_refs.append("JR-AST-012")
    if check.get("risk_is_expired") or mismatch_type == "risk_expired":
        rule_refs.append("FM-03")
    if check.get("needs_branch_confirm") or mismatch_type == "age_branch_confirm":
        rule_refs.append("FM-01")
    if mismatch_type == "professional_exempt":
        rule_refs.append("JR-AST-PRO")
    return rule_refs


def build_suitability_log_row(
    check: dict[str, Any],
    *,
    trace_id: str,
    actor_id: str,
    check_source: CheckSource = "r02_trade",
    request_ref: str | None = None,
    profile_l1_version: int | None = None,
) -> dict[str, Any]:
    """将 CoreReadOnlyRepository.check_suitability 结果转为 INSERT 用 dict。"""
    rule_refs = compute_rule_refs(check)
    match_result = check.get("match_result") or "forbidden"
    mismatch_type = check.get("mismatch_type") or "not_found"

    return {
        "trace_id": trace_id,
        "customer_id": check.get("customer_id") or "",
        "product_id": check.get("product_id") or "",
        "product_name": check.get("product_name"),
        "customer_risk_level": check.get("customer_risk_code") or "C1",
        "product_risk_level": check.get("product_risk_code") or "R1",
        "investor_category": check.get("investor_category") or "ordinary",
        "match_result": match_result,
        "mismatch_type": mismatch_type,
        "is_matched": 1 if check.get("matched") else 0,
        "is_blocked": 1 if check.get("blocked") else 0,
        "requires_disclosure": 1 if check.get("requires_disclosure") else 0,
        "needs_branch_confirm": 1 if check.get("needs_branch_confirm") else 0,
        "risk_was_expired": 1 if check.get("risk_is_expired") else 0,
        "block_reason": check.get("reason"),
        "block_response_code": check.get("block_response_code"),
        "check_source": check_source,
        "actor_id": actor_id,
        "request_ref": request_ref,
        "profile_l1_version": profile_l1_version,
        "rule_refs": rule_refs or None,
    }