import { HardwareAsset, SoftwareAsset, SWUser, HardwareLog } from './excelHandler';

// --- State Definitions ---
export interface MasterAssetData {
  pc: HardwareAsset[];
  server: HardwareAsset[];
  storage: HardwareAsset[];
  equip: HardwareAsset[];
  mobile: HardwareAsset[];
  subSw: SoftwareAsset[];
  permSw: SoftwareAsset[];
  swUsers: SWUser[];
  logs: HardwareLog[];
}

export interface AppState {
  activeCategory: 'dashboard' | 'hw' | 'sw';
  activeSubTab: string; // '대시보드', '개인PC', '서버', '스토리지', '전산비품', '구독SW', '영구SW'
  masterData: MasterAssetData;
}

// 초기 상태
export const state: AppState = {
  activeCategory: 'dashboard',
  activeSubTab: '대시보드',
  masterData: {
    pc: [],
    server: [],
    storage: [],
    equip: [],
    mobile: [],
    subSw: [],
    permSw: [],
    swUsers: [],
    logs: []
  }
};

/**
 * 전용 API 엔드포인트들로부터 데이터 로드
 */
export async function loadMasterDataFromDB() {
  try {
    const endpoints = [
      { key: 'pc', url: 'http://localhost:3000/api/pc' },
      { key: 'server', url: 'http://localhost:3000/api/server' },
      { key: 'storage', url: 'http://localhost:3000/api/storage' },
      { key: 'equip', url: 'http://localhost:3000/api/equip' },
      { key: 'mobile', url: 'http://localhost:3000/api/mobile' },
      { key: 'subSw', url: 'http://localhost:3000/api/sw/sub' },
      { key: 'permSw', url: 'http://localhost:3000/api/sw/perm' },
      { key: 'swUsers', url: 'http://localhost:3000/api/sw-users' }
    ];

    const results = await Promise.all(endpoints.map(e => fetch(e.url)));
    
    for (let i = 0; i < endpoints.length; i++) {
      if (results[i].ok) {
        const data = await results[i].json();
        (state.masterData as any)[endpoints[i].key] = data || [];
      }
    }

    console.log('✅ 6개 테이블 데이터 로드 완료');
    return true;
  } catch (err) {
    console.warn('⚠️ 백엔드 서버 연결 실패. 로컬 데이터를 유지합니다.');
  }
  return false;
}

// --- State Helpers ---
export function updateState(newState: Partial<AppState>) {
  Object.assign(state, newState);
}

/**
 * 하드웨어 자산 통합 저장 (자동 카테고리 분류)
 */
export function saveHardwareAsset(updatedAsset: HardwareAsset) {
  const { type } = updatedAsset;
  const detailPurpose = (updatedAsset as any).상세용도 || '';

  // 1. 타겟 카테고리 결정
  let targetKey: keyof MasterAssetData = 'equip';
  if (type === '서버' || (type === 'PC' && detailPurpose === '서버')) targetKey = 'server';
  else if (['NAS', 'DAS', '스토리지'].includes(type)) targetKey = 'storage';
  else if (['CPU', 'GPU', 'RAM', 'HDD'].includes(type)) targetKey = 'equip';
  else if (['모바일', '태블릿', '노트북'].includes(type)) targetKey = 'mobile';
  else if (type === 'PC' && detailPurpose === '개인PC') targetKey = 'pc';

  // 2. 모든 카테고리에서 기존 ID 자산 삭제 (이동 가능성 대비)
  const hwKeys: (keyof MasterAssetData)[] = ['pc', 'server', 'storage', 'equip', 'mobile'];
  hwKeys.forEach(key => {
    const arr = state.masterData[key] as HardwareAsset[];
    if (Array.isArray(arr)) {
      const idx = arr.findIndex(a => a.id === updatedAsset.id);
      if (idx > -1) arr.splice(idx, 1);
    }
  });

  // 3. 새로운 타겟 카테고리에 추가
  (state.masterData[targetKey] as HardwareAsset[]).push(updatedAsset);
}

/**
 * 하드웨어 자산 통합 삭제
 */
export function deleteHardwareAsset(assetId: string) {
  const hwKeys: (keyof MasterAssetData)[] = ['pc', 'server', 'storage', 'equip', 'mobile'];
  hwKeys.forEach(key => {
    const arr = state.masterData[key] as HardwareAsset[];
    if (Array.isArray(arr)) {
      const idx = arr.findIndex(a => a.id === assetId);
      if (idx > -1) arr.splice(idx, 1);
    }
  });
}