import type { DashboardKisWsApprovalResponse } from "@/features/trade/types/trade.types";
import { getKisApprovalKey, resolveKisWebSocketUrl } from "@/lib/kis/approval";
import { normalizeTradingEnv } from "@/lib/kis/config";
import {
  parseKisCredentialRequest,
  validateKisCredentialInput,
} from "@/lib/kis/request";
import { NextRequest, NextResponse } from "next/server";

/**
 * @file app/api/kis/ws/approval/route.ts
 * @description KIS 웹소켓 승인키와 WS URL을 발급합니다.
 */

/**
 * @description 실시간 웹소켓 연결 정보를 발급합니다.
 * @see features/trade/hooks/useKisTradeWebSocket.ts
 */
export async function POST(request: NextRequest) {
  const credentials = await parseKisCredentialRequest(request);
  const tradingEnv = normalizeTradingEnv(credentials.tradingEnv);

  const invalidMessage = validateKisCredentialInput(credentials);
  if (invalidMessage) {
    return NextResponse.json(
      {
        ok: false,
        tradingEnv,
        message: invalidMessage,
      } satisfies DashboardKisWsApprovalResponse,
      { status: 400 },
    );
  }

  try {
    const approvalKey = await getKisApprovalKey(credentials);
    const wsUrl = resolveKisWebSocketUrl(credentials);

    return NextResponse.json({
      ok: true,
      tradingEnv,
      approvalKey,
      wsUrl,
      message: "웹소켓 승인키 발급이 완료되었습니다.",
    } satisfies DashboardKisWsApprovalResponse);
  } catch (error) {
    const message =
      error instanceof Error
        ? error.message
        : "웹소켓 승인키 발급 중 오류가 발생했습니다.";

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