'use server';

/**
 * TodayIssue API 서비스
 * 헤더 알림 기능을 위한 API 호출 함수
 */

import { apiClient } from './index';
import { AuthError } from './errors';
import type {
  ApiResponse,
  TodayIssueUnreadResponse,
  TodayIssueUnreadCountResponse,
  TodayIssueMarkAllReadResponse,
} from '@/types/today-issue';

/**
 * 인증 에러인지 확인
 */
function isAuthenticationError(error: unknown): boolean {
  if (error instanceof AuthError) return true;
  if (error && typeof error === 'object') {
    const err = error as { status?: number; code?: string; message?: string };
    if (err.status === 401) return true;
    if (err.code === 'AUTH_ERROR') return true;
    if (err.message?.includes('회원정보') || err.message?.includes('인증')) return true;
  }
  return false;
}

/**
 * 읽지 않은 이슈 목록 조회 (헤더 알림용)
 * @param limit 조회할 최대 항목 수 (기본 10)
 */
export async function getUnreadTodayIssues(limit: number = 10): Promise<ApiResponse<TodayIssueUnreadResponse>> {
  try {
    const response = await apiClient.get<ApiResponse<TodayIssueUnreadResponse>>(
      '/today-issues/unread',
      { params: { limit: String(limit) } }
    );
    return response;
  } catch (error) {
    console.error('[TodayIssue] getUnreadTodayIssues error:', error);

    // 인증 에러인 경우 authError 플래그 설정
    if (isAuthenticationError(error)) {
      return {
        success: false,
        message: '인증이 만료되었습니다.',
        data: { items: [], total: 0 },
        authError: true,
      };
    }

    // 일반 에러
    return {
      success: false,
      message: '알림을 불러오는데 실패했습니다.',
      data: { items: [], total: 0 },
    };
  }
}

/**
 * 읽지 않은 이슈 개수 조회 (헤더 뱃지용)
 */
export async function getUnreadTodayIssueCount(): Promise<ApiResponse<TodayIssueUnreadCountResponse>> {
  try {
    const response = await apiClient.get<ApiResponse<TodayIssueUnreadCountResponse>>(
      '/today-issues/unread/count'
    );
    return response;
  } catch (error) {
    console.error('[TodayIssue] getUnreadTodayIssueCount error:', error);
    return {
      success: false,
      message: '알림 개수를 불러오는데 실패했습니다.',
      data: { count: 0 },
    };
  }
}

/**
 * 이슈 읽음 처리
 * @param id 이슈 ID
 */
export async function markTodayIssueAsRead(id: number): Promise<ApiResponse<null>> {
  try {
    const response = await apiClient.post<ApiResponse<null>>(
      `/today-issues/${id}/read`
    );
    return response;
  } catch (error) {
    console.error('[TodayIssue] markTodayIssueAsRead error:', error);
    return {
      success: false,
      message: '읽음 처리에 실패했습니다.',
      data: null,
    };
  }
}

/**
 * 모든 이슈 읽음 처리
 */
export async function markAllTodayIssuesAsRead(): Promise<ApiResponse<TodayIssueMarkAllReadResponse>> {
  try {
    const response = await apiClient.post<ApiResponse<TodayIssueMarkAllReadResponse>>(
      '/today-issues/read-all'
    );
    return response;
  } catch (error) {
    console.error('[TodayIssue] markAllTodayIssuesAsRead error:', error);
    return {
      success: false,
      message: '모두 읽음 처리에 실패했습니다.',
      data: { count: 0 },
    };
  }
}