import type { DashboardKisValidateResponse } from "@/features/dashboard/types/dashboard.types";
import type { KisCredentialInput } from "@/lib/kis/config";
import { hasKisConfig, normalizeTradingEnv } from "@/lib/kis/config";
import { getKisAccessToken } from "@/lib/kis/token";
import { NextRequest, NextResponse } from "next/server";

/**
 * @file app/api/kis/validate/route.ts
 * @description 사용자 입력 KIS API 키 검증 라우트
 */

/**
 * KIS API 키 검증
 * @param request appKey/appSecret/tradingEnv JSON 본문
 * @returns 검증 성공/실패 정보
 * @see features/dashboard/components/dashboard-main.tsx handleValidateKis - 검증 버튼 클릭 시 호출
 */
export async function POST(request: NextRequest) {
  const body = (await request.json()) as Partial<DashboardKisValidateRequest>;

  const credentials: KisCredentialInput = {
    appKey: body.appKey?.trim(),
    appSecret: body.appSecret?.trim(),
    tradingEnv: normalizeTradingEnv(body.tradingEnv),
  };

  if (!hasKisConfig(credentials)) {
    return NextResponse.json(
      {
        ok: false,
        tradingEnv: normalizeTradingEnv(credentials.tradingEnv),
        message: "앱 키와 앱 시크릿을 모두 입력해 주세요.",
      } satisfies DashboardKisValidateResponse,
      { status: 400 },
    );
  }

  try {
    // 검증 단계는 토큰 발급 성공 여부만 확인합니다.
    await getKisAccessToken(credentials);

    return NextResponse.json({
      ok: true,
      tradingEnv: normalizeTradingEnv(credentials.tradingEnv),
      message: "API 키 검증이 완료되었습니다. (토큰 발급 성공)",
    } satisfies DashboardKisValidateResponse);
  } catch (error) {
    const message = error instanceof Error ? error.message : "API 키 검증 중 오류가 발생했습니다.";

    return NextResponse.json(
      {
        ok: false,
        tradingEnv: normalizeTradingEnv(credentials.tradingEnv),
        message,
      } satisfies DashboardKisValidateResponse,
      { status: 401 },
    );
  }
}

interface DashboardKisValidateRequest {
  appKey: string;
  appSecret: string;
  tradingEnv: "real" | "mock";
}