'use server';


import { executeServerAction, type ActionResult } from '@/lib/api/execute-server-action';
import type { ComprehensiveAnalysisData } from './types';

const API_URL = process.env.NEXT_PUBLIC_API_URL;

// ===== API 응답 타입 =====
interface TodayIssueItemApi {
  id: string;
  category: string;
  description: string;
  requires_approval: boolean;
  time: string;
}

interface TodayIssueSectionApi {
  filter_options: string[];
  items: TodayIssueItemApi[];
}

interface CheckPointApi {
  id: string;
  type: 'success' | 'warning' | 'error' | 'info';
  message: string;
  highlight?: string;
}

interface AmountCardApi {
  id: string;
  label: string;
  amount: number;
  sub_amount?: number;
  sub_label?: string;
  previous_amount?: number;
  previous_label?: string;
}

interface ExpenseSectionApi {
  cards: AmountCardApi[];
  check_points: CheckPointApi[];
}

interface ReceivableSectionApi extends ExpenseSectionApi {
  has_detail_button: boolean;
  detail_button_label: string;
  detail_button_path: string;
}

interface ComprehensiveAnalysisDataApi {
  today_issue: TodayIssueSectionApi;
  monthly_expense: ExpenseSectionApi;
  card_management: ExpenseSectionApi;
  entertainment: ExpenseSectionApi;
  welfare: ExpenseSectionApi;
  receivable: ReceivableSectionApi;
  debt_collection: ExpenseSectionApi;
}

// ===== API → Frontend 변환 =====
function transformCheckPoint(item: CheckPointApi): ComprehensiveAnalysisData['monthlyExpense']['checkPoints'][0] {
  return { id: item.id, type: item.type, message: item.message, highlight: item.highlight };
}

function transformAmountCard(item: AmountCardApi): ComprehensiveAnalysisData['monthlyExpense']['cards'][0] {
  return {
    id: item.id, label: item.label, amount: item.amount,
    subAmount: item.sub_amount, subLabel: item.sub_label,
    previousAmount: item.previous_amount, previousLabel: item.previous_label,
  };
}

function transformTodayIssueItem(item: TodayIssueItemApi): ComprehensiveAnalysisData['todayIssue']['items'][0] {
  return { id: item.id, category: item.category, description: item.description, requiresApproval: item.requires_approval, time: item.time };
}

function transformExpenseSection(section: ExpenseSectionApi): ComprehensiveAnalysisData['monthlyExpense'] {
  return { cards: section.cards.map(transformAmountCard), checkPoints: section.check_points.map(transformCheckPoint) };
}

function transformReceivableSection(section: ReceivableSectionApi): ComprehensiveAnalysisData['receivable'] {
  return {
    cards: section.cards.map(transformAmountCard),
    checkPoints: section.check_points.map(transformCheckPoint),
    hasDetailButton: section.has_detail_button,
    detailButtonLabel: section.detail_button_label,
    detailButtonPath: section.detail_button_path,
  };
}

function transformAnalysisData(data: ComprehensiveAnalysisDataApi): ComprehensiveAnalysisData {
  return {
    todayIssue: { filterOptions: data.today_issue.filter_options, items: data.today_issue.items.map(transformTodayIssueItem) },
    monthlyExpense: transformExpenseSection(data.monthly_expense),
    cardManagement: transformExpenseSection(data.card_management),
    entertainment: transformExpenseSection(data.entertainment),
    welfare: transformExpenseSection(data.welfare),
    receivable: transformReceivableSection(data.receivable),
    debtCollection: transformExpenseSection(data.debt_collection),
  };
}

// ===== 종합 분석 데이터 조회 =====
export async function getComprehensiveAnalysis(params?: {
  date?: string;
}): Promise<ActionResult<ComprehensiveAnalysisData>> {
  const searchParams = new URLSearchParams();
  if (params?.date) searchParams.set('date', params.date);
  const queryString = searchParams.toString();

  return executeServerAction({
    url: `${API_URL}/api/v1/comprehensive-analysis${queryString ? `?${queryString}` : ''}`,
    transform: (data: ComprehensiveAnalysisDataApi) => transformAnalysisData(data),
    errorMessage: '종합 분석 조회에 실패했습니다.',
  });
}

// ===== 이슈 승인 =====
export async function approveIssue(issueId: string): Promise<ActionResult> {
  return executeServerAction({
    url: `${API_URL}/api/v1/approvals/${issueId}/approve`,
    method: 'POST',
    errorMessage: '승인에 실패했습니다.',
  });
}

// ===== 이슈 반려 =====
export async function rejectIssue(issueId: string, reason?: string): Promise<ActionResult> {
  return executeServerAction({
    url: `${API_URL}/api/v1/approvals/${issueId}/reject`,
    method: 'POST',
    body: { comment: reason },
    errorMessage: '반려에 실패했습니다.',
  });
}