import type { KisRuntimeCredentials } from "@/features/settings/store/use-kis-runtime-store";
import type {
  DashboardActivityResponse,
  DashboardBalanceResponse,
  DashboardIndicesResponse,
} from "@/features/dashboard/types/dashboard.types";

/**
 * @file features/dashboard/apis/dashboard.api.ts
 * @description 대시보드 잔고/지수 API 클라이언트
 */

/**
 * 계좌 잔고/보유종목을 조회합니다.
 * @param credentials KIS 인증 정보
 * @returns 잔고 응답
 * @see app/api/kis/domestic/balance/route.ts 서버 라우트
 */
export async function fetchDashboardBalance(
  credentials: KisRuntimeCredentials,
): Promise<DashboardBalanceResponse> {
  const response = await fetch("/api/kis/domestic/balance", {
    method: "GET",
    headers: buildKisRequestHeaders(credentials),
    cache: "no-store",
  });

  const payload = (await response.json()) as
    | DashboardBalanceResponse
    | { error?: string };

  if (!response.ok) {
    throw new Error(
      "error" in payload ? payload.error : "잔고 조회 중 오류가 발생했습니다.",
    );
  }

  return payload as DashboardBalanceResponse;
}

/**
 * 시장 지수(KOSPI/KOSDAQ)를 조회합니다.
 * @param credentials KIS 인증 정보
 * @returns 지수 응답
 * @see app/api/kis/domestic/indices/route.ts 서버 라우트
 */
export async function fetchDashboardIndices(
  credentials: KisRuntimeCredentials,
): Promise<DashboardIndicesResponse> {
  const response = await fetch("/api/kis/domestic/indices", {
    method: "GET",
    headers: buildKisRequestHeaders(credentials),
    cache: "no-store",
  });

  const payload = (await response.json()) as
    | DashboardIndicesResponse
    | { error?: string };

  if (!response.ok) {
    throw new Error(
      "error" in payload ? payload.error : "지수 조회 중 오류가 발생했습니다.",
    );
  }

  return payload as DashboardIndicesResponse;
}

/**
 * 주문내역/매매일지(활동 데이터)를 조회합니다.
 * @param credentials KIS 인증 정보
 * @returns 활동 데이터 응답
 * @see app/api/kis/domestic/activity/route.ts 서버 라우트
 */
export async function fetchDashboardActivity(
  credentials: KisRuntimeCredentials,
): Promise<DashboardActivityResponse> {
  const response = await fetch("/api/kis/domestic/activity", {
    method: "GET",
    headers: buildKisRequestHeaders(credentials),
    cache: "no-store",
  });

  const payload = (await response.json()) as
    | DashboardActivityResponse
    | { error?: string };

  if (!response.ok) {
    throw new Error(
      "error" in payload ? payload.error : "활동 데이터 조회 중 오류가 발생했습니다.",
    );
  }

  return payload as DashboardActivityResponse;
}

/**
 * 대시보드 API 공통 헤더를 구성합니다.
 * @param credentials KIS 인증 정보
 * @returns KIS 전달 헤더
 * @see features/dashboard/apis/dashboard.api.ts fetchDashboardBalance/fetchDashboardIndices
 */
function buildKisRequestHeaders(credentials: KisRuntimeCredentials) {
  const headers: Record<string, string> = {
    "x-kis-app-key": credentials.appKey,
    "x-kis-app-secret": credentials.appSecret,
    "x-kis-trading-env": credentials.tradingEnv,
  };

  if (credentials.accountNo?.trim()) {
    headers["x-kis-account-no"] = credentials.accountNo.trim();
  }

  return headers;
}