import { state, saveHardwareAsset, deleteHardwareAsset } from '../../core/state';
import { HardwareAsset, HardwareLog } from '../../core/excelHandler';
import { closeModals } from './BaseModal';
import { createIcons, History, Plus, X, Save, Edit2, RotateCcw, Paperclip } from 'lucide';
import { CORP_LIST, ORG_LIST, HW_TYPE_LIST, LOCATION_DATA, TYPE_PREFIX_MAP } from './SharedData';
import { 
  generateOptionsHTML, 
  setFieldValue, 
  getFieldValue, 
  parseAndSetLocation, 
  bindLocationEvents, 
  getCombinedLocation,
  setEditLock,
  createModalFrameHTML,
  autoFillForm,
  autoExtractForm
} from './ModalUtils';

let currentAsset: HardwareAsset | null = null;
let isEditMode = false;

const STATUS_LIST = ['사용중', '보관중', '수리중', '폐기예정', '기타'];

// 필드 ID ↔ 데이터 Key 매핑
const HW_FIELD_MAP: Record<string, string> = {
  '유형': 'type',
  '법인': '법인',
  '자산코드': '자산코드',
  '현사용조직': '실사용조직',
  '이전사용조직': '이전사용조직',
  '상세용도': '서버용도',
  '모델명': '모델명',
  '명칭': '명칭',
  '보관위치': '보관위치',
  '현재상태': '상태',
  'IP주소': 'IP주소',
  'IP2': 'IP2',
  '원격접속': '원격방법',
  '서버ID': '서버ID',
  '서버PW': '서버PW',
  '모니터링': '모니터링',
  'OS': 'OS',
  'CPU': 'CPU',
  'RAM': 'RAM',
  'SSD1': 'SSD1',
  'SSD2': 'SSD2',
  'HW사양': 'HW사양',
  '담당자_정': '관리조직',
  '구매일': '도입일',
  '금액': '구매가',
  '비고': '비고',
  '사용자': '사용자'
};

const HW_FORM_HTML = `
  <div class="form-section-title">기본 정보 (Identity)</div>
  <div class="form-group">
    <label for="hw-법인">구매법인</label>
    <select id="hw-법인" required>${generateOptionsHTML(CORP_LIST)}</select>
  </div>
  <div class="form-group">
    <label for="hw-자산코드">자산번호</label>
    <div class="input-with-btn">
      <input type="text" id="hw-자산코드" readonly class="is-readonly-field" placeholder="번호 생성을 클릭하세요" required />
      <button type="button" id="btn-generate-hw-code" class="btn btn-outline btn-sm">생성</button>
    </div>
  </div>
  <div class="form-group pc-only">
    <label for="hw-사용자">사용자</label>
    <input type="text" id="hw-사용자" />
  </div>
  <div class="form-group">
    <label for="hw-현사용조직">실사용조직</label>
    <select id="hw-현사용조직">${generateOptionsHTML(ORG_LIST)}</select>
  </div>
  <div class="form-group" id="hw-이전사용조직-group">
    <label for="hw-이전사용조직">이전 사용조직</label>
    <input type="text" id="hw-이전사용조직" readonly />
  </div>
  <div class="form-group" id="hw-유형-group">
    <label for="hw-유형">자산구분</label>
    <select id="hw-유형">${generateOptionsHTML(HW_TYPE_LIST)}</select>
  </div>
  <div class="form-group" id="hw-상세용도-group" style="display:none;">
    <label for="hw-상세용도">서버용도</label>
    <select id="hw-상세용도">
      <option value="">선택하세요</option>
      <option value="DB서버">DB 서버</option>
      <option value="웹서버">웹 서버</option>
      <option value="어플리케이션">어플리케이션</option>
      <option value="가상화">가상화 호스트</option>
    </select>
  </div>

  <div class="form-section-title op-only" id="hw-op-title">운영 및 상태 관리</div>
  <div class="form-group op-only">
    <label for="hw-보관위치">보관위치</label>
    <input type="text" id="hw-보관위치" placeholder="예: 7층 비품창고" />
  </div>
  <div class="form-group op-only">
    <label for="hw-현재상태">현재상태</label>
    <select id="hw-현재상태">${generateOptionsHTML(STATUS_LIST)}</select>
  </div>

  <div class="form-section-title server-only" id="hw-network-title">네트워크 정보 (Connectivity)</div>
  <div class="form-group server-only" id="hw-ip-group"><label for="hw-IP주소">IP 주소 1</label><input type="text" id="hw-IP주소" /></div>
  <div class="form-group server-only" id="hw-ip2-group"><label for="hw-IP2">IP 주소 2</label><input type="text" id="hw-IP2" /></div>
  <div class="form-group server-only" id="hw-remote-group"><label for="hw-원격접속">원격 방법</label><input type="text" id="hw-원격접속" /></div>
  <div class="form-group server-only" id="hw-server-id-group"><label for="hw-서버ID">서버 ID</label><input type="text" id="hw-서버ID" /></div>
  <div class="form-group server-only" id="hw-server-pw-group"><label for="hw-서버PW">서버 PW</label><input type="password" id="hw-서버PW" /></div>
  <div class="form-group non-server" id="hw-ip-non-server-group"><label for="hw-IP주소-non-server">IP 주소</label><input type="text" id="hw-IP주소-non-server" /></div>

  <div class="form-section-title" id="hw-spec-title">하드웨어 사양 (Specifications)</div>
  <div class="form-group" id="hw-model-group"><label for="hw-모델명">모델명</label><input type="text" id="hw-모델명" /></div>
  <div class="form-group" id="hw-os-group"><label for="hw-OS">운영체제 (OS)</label><input type="text" id="hw-OS" /></div>
  <div class="form-group" id="hw-cpu-group"><label for="hw-CPU">CPU 사양</label><input type="text" id="hw-CPU" /></div>
  <div class="form-group" id="hw-ram-group"><label for="hw-RAM">RAM 용량</label><input type="text" id="hw-RAM" /></div>
  <div class="form-group" id="hw-ssd1-group"><label for="hw-SSD1">Storage 1 (SSD/HDD)</label><input type="text" id="hw-SSD1" /></div>
  <div class="form-group" id="hw-ssd2-group"><label for="hw-SSD2">Storage 2 (SSD/HDD)</label><input type="text" id="hw-SSD2" /></div>
  <div class="form-group server-only" id="hw-monitoring-group"><label for="hw-모니터링">모니터링 유무</label><input type="text" id="hw-모니터링" /></div>
  <div class="form-group full-width non-server" id="hw-hwspec-group"><label for="hw-HW사양">사양 상세</label><textarea id="hw-HW사양" rows="2"></textarea></div>

  <div class="form-section-title" id="hw-loc-title">설치 위치 및 관리</div>
  <div class="form-group loc-standard"><label for="hw-위치-빌딩">설치장소 (대분류)</label><select id="hw-위치-빌딩">${generateOptionsHTML(Object.keys(LOCATION_DATA))}</select></div>
  <div class="form-group loc-standard"><label for="hw-위치-상세">세부 설치 위치</label><select id="hw-위치-상세"><option value="">선택</option></select></div>
  <div class="form-group" id="hw-위치-기타-group" style="display:none;"><label for="hw-위치-기타">직접 입력 (기타)</label><input type="text" id="hw-위치-기타" /></div>
  <div class="form-group"><label for="hw-담당자_정">자산관리조직</label><input type="text" id="hw-담당자_정" readonly /></div>
  <div class="form-group"><label for="hw-구매일">도입일</label><input type="text" id="hw-구매일" /></div>
  <div class="form-group"><label for="hw-금액">구매가</label><input type="text" id="hw-금액" oninput="this.value=this.value.replace(/[^0-9]/g,'').replace(/\\\\B(?=(\\\\d{3})+(?!\\\\d))/g,',')" /></div>
  <div class="form-group full-width"><label for="hw-비고">비고</label><textarea id="hw-비고" rows="2"></textarea></div>
`;

function renderHwHistory(assetId: string) {
  const container = document.getElementById('hw-history-list');
  if (!container) return;
  const logs = (state.masterData.logs || []).filter(l => l.assetId === assetId).sort((a,b) => new Date(b.date).getTime() - new Date(a.date).getTime());
  if (logs.length === 0) { container.innerHTML = '<div class="empty-history">기록된 이력이 없습니다.</div>'; return; }
  container.innerHTML = logs.map(l => `
    <div class="history-item">
      <div class="history-date">${l.date}</div>
      <div class="history-user">${l.user}</div>
      <div class="history-details">${l.details.replace(/\n/g, '<br>')}</div>
    </div>
  `).join('');
}

function applyTypeSpecificUI(type: string) {
  const detailPurpose = getFieldValue('hw-상세용도');
  const upperType = (type || '').toUpperCase();

  const groups: Record<string, HTMLElement | null> = {
    detailPurpose: document.getElementById('hw-상세용도-group'),
    networkTitle: document.getElementById('hw-network-title'),
    specTitle: document.getElementById('hw-spec-title'),
    opTitle: document.getElementById('hw-op-title'),
    model: document.getElementById('hw-model-group'),
    os: document.getElementById('hw-os-group'),
    cpu: document.getElementById('hw-cpu-group'),
    ram: document.getElementById('hw-ram-group'),
    ssd1: document.getElementById('hw-ssd1-group'),
    ssd2: document.getElementById('hw-ssd2-group'),
    hwSpec: document.getElementById('hw-hwspec-group'),
    monitoring: document.getElementById('hw-monitoring-group'),
    user: document.querySelector('.pc-only') as HTMLElement
  };

  const serverOnly = document.querySelectorAll('.server-only');
  const nonServer = document.querySelectorAll('.non-server');
  const opOnly = document.querySelectorAll('.op-only');
  const standardLoc = document.querySelectorAll('.loc-standard');

  serverOnly.forEach(el => (el as HTMLElement).style.display = 'none');
  nonServer.forEach(el => (el as HTMLElement).style.display = 'none');
  opOnly.forEach(el => (el as HTMLElement).style.display = 'none');
  standardLoc.forEach(el => (el as HTMLElement).style.display = 'flex');
  Object.values(groups).forEach(g => { if (g) g.style.display = 'none'; });

  const isServer = upperType.includes('서버') || upperType.includes('SERVER');
  const isMobileGroup = ['모바일', '태블릿', '휴대폰'].some(t => upperType.includes(t));
  const isEquipGroup = ['CPU', 'RAM', 'HDD', 'GPU'].some(t => upperType.includes(t)) || upperType.includes('비품');
  const isOpType = isMobileGroup || isEquipGroup;
  const isPcType = upperType === 'PC' || upperType === '개인PC' || upperType === '노트북';

  if (isServer) {
    serverOnly.forEach(el => (el as HTMLElement).style.display = 'flex');
    if (groups.detailPurpose) groups.detailPurpose.style.display = 'flex';
    if (groups.networkTitle) groups.networkTitle.style.display = 'flex';
    if (groups.specTitle) groups.specTitle.style.display = 'flex';
    ['model', 'os', 'cpu', 'ram', 'ssd1', 'ssd2', 'monitoring'].forEach(k => { if (groups[k]) groups[k]!.style.display = 'flex'; });
  } else if (isPcType) {
    if (groups.user) groups.user.style.display = 'flex';
    if (groups.specTitle) groups.specTitle.style.display = 'flex';
    nonServer.forEach(el => (el as HTMLElement).style.display = 'flex');
    ['model', 'os', 'cpu', 'ram', 'ssd1', 'ssd2', 'hwSpec'].forEach(k => { if (groups[k]) groups[k]!.style.display = 'flex'; });
  } else if (isOpType) {
    opOnly.forEach(el => (el as HTMLElement).style.display = 'flex');
    standardLoc.forEach(el => (el as HTMLElement).style.display = 'none');
    if (groups.specTitle) groups.specTitle.style.display = 'flex';
    if (groups.model) groups.model.style.display = 'flex';
    if (groups.hwSpec) groups.hwSpec.style.display = 'flex';
  } else {
    nonServer.forEach(el => (el as HTMLElement).style.display = 'flex');
    if (groups.specTitle) groups.specTitle.style.display = 'flex';
    ['model', 'os', 'cpu', 'ram', 'ssd1', 'ssd2', 'hwSpec'].forEach(k => { if (groups[k]) groups[k]!.style.display = 'flex'; });
  }
}

export function openHwModal(asset: HardwareAsset, mode: 'view' | 'add' = 'view') {
  currentAsset = asset;
  const modal = document.getElementById('hw-asset-modal')!;
  
  setEditLock('hw-asset-form', mode, {
    saveBtnId: 'btn-save-hw-asset',
    revertBtnId: 'btn-revert-hw-edit',
    generateBtnId: 'btn-generate-hw-code',
    addLogBtnId: 'btn-add-hw-log'
  });

  isEditMode = (mode === 'add');
  autoFillForm('hw', asset, HW_FIELD_MAP);
  parseAndSetLocation(asset.위치, 'hw-위치-빌딩', 'hw-위치-상세', 'hw-위치-기타-group', 'hw-위치-기타');
  applyTypeSpecificUI(asset.type);
  renderHwHistory(asset.id);

  modal.classList.remove('hidden');
  createIcons({ icons: { X, Save, Edit2, RotateCcw, History, Plus, Paperclip } });
}

export function initHwModal(onSave: () => void, closeModalsCb: () => void) {
  if (!document.getElementById('hw-asset-modal')) {
    const html = createModalFrameHTML('hw', '자산 상세 정보', HW_FORM_HTML, {
      historyTitle: '유지보수 및 변경 이력',
      addLogBtnId: 'btn-add-hw-log'
    });
    document.body.insertAdjacentHTML('beforeend', html);
    
    const logModalHTML = `
      <div id="hw-log-modal" class="modal-overlay hidden" style="z-index: 1100;">
        <div class="modal-content" style="max-width: 400px;">
          <div class="modal-header"><h2>이력 추가</h2><button id="btn-close-hw-log" class="btn-icon"><i data-lucide="x"></i></button></div>
          <div class="modal-body">
            <div class="grid-form" style="grid-template-columns: 1fr;">
              <div class="form-group"><label>날짜</label><input type="date" id="new-hw-log-date" /></div>
              <div class="form-group"><label>내용</label><textarea id="new-hw-log-details" rows="3" placeholder="예: [유지보수] 먼지 제거, [부품교체] 배터리 교체 등"></textarea></div>
            </div>
          </div>
          <div class="modal-footer"><div></div><div class="footer-actions"><button id="btn-cancel-hw-log" class="btn btn-outline">취소</button><button id="btn-confirm-hw-log" class="btn btn-primary">추가</button></div></div>
        </div>
      </div>
    `;
    document.body.insertAdjacentHTML('beforeend', logModalHTML);
  }

  const saveBtn = document.getElementById('btn-save-hw-asset')!;
  const revertBtn = document.getElementById('btn-revert-hw-edit')!;
  const deleteBtn = document.getElementById('btn-delete-hw-asset')!;
  const typeSelect = document.getElementById('hw-유형') as HTMLSelectElement;
  const detailPurposeSelect = document.getElementById('hw-상세용도') as HTMLSelectElement;
  const logAddBtn = document.getElementById('btn-add-hw-log')!;
  const logModal = document.getElementById('hw-log-modal')!;

  [typeSelect, detailPurposeSelect].forEach(el => {
    el?.addEventListener('change', () => applyTypeSpecificUI(typeSelect.value));
  });

  bindLocationEvents('hw-위치-빌딩', 'hw-위치-상세', 'hw-위치-기타-group', 'hw-위치-기타');

  const closeModalAction = () => { closeModalsCb(); isEditMode = false; };
  document.getElementById('btn-close-hw-modal')?.addEventListener('click', closeModalAction);
  document.getElementById('btn-cancel-hw-modal')?.addEventListener('click', closeModalAction);
  
  revertBtn.addEventListener('click', () => {
    setEditLock('hw-asset-form', 'view', { 
      saveBtnId: 'btn-save-hw-asset', 
      revertBtnId: 'btn-revert-hw-edit', 
      generateBtnId: 'btn-generate-hw-code',
      addLogBtnId: 'btn-add-hw-log'
    });
    isEditMode = false;
    if (currentAsset) openHwModal(currentAsset, 'view');
  });

  document.getElementById('btn-generate-hw-code')?.addEventListener('click', async () => {
    const typeValue = typeSelect.value;
    const purchaseDate = getFieldValue('hw-구매일');
    const typeCode = TYPE_PREFIX_MAP[typeValue] || 'ETC';
    const dateStr = purchaseDate.replace(/[^0-9]/g, '');
    if (dateStr.length < 6) { alert('올바른 도입일(YYYYMM)을 입력해주세요.'); return; }
    const prefix = `${typeCode}-${dateStr.substring(0, 6)}-`;
    try {
      const res = await fetch(`http://localhost:3000/api/generate-asset-code?prefix=${prefix}`);
      const data = await res.json();
      if (data.nextCode) setFieldValue('hw-자산코드', data.nextCode);
    } catch (err) { alert('자산번호 생성에 실패했습니다.'); }
  });

  saveBtn.addEventListener('click', () => {
    if (!currentAsset) return;
    if (!isEditMode) {
      setEditLock('hw-asset-form', 'edit', { 
        saveBtnId: 'btn-save-hw-asset', 
        revertBtnId: 'btn-revert-hw-edit', 
        generateBtnId: 'btn-generate-hw-code',
        addLogBtnId: 'btn-add-hw-log'
      });
      isEditMode = true;
      applyTypeSpecificUI(getFieldValue('hw-유형'));
      return;
    }
    
    const extracted = autoExtractForm('hw', HW_FIELD_MAP);
    if (!extracted.자산코드) {
      alert('자산번호가 없습니다. [생성] 버튼을 눌러 자산번호를 부여해주세요.');
      return;
    }

    const diffLogs: string[] = [];
    const compareFields = [
      { key: '실사용조직', label: '실사용조직' },
      { key: '위치', label: '위치' },
      { key: '상태', label: '상태' },
      { key: 'IP주소', label: 'IP' }
    ];

    const currentLocation = currentAsset.위치 || '';
    const newLocation = getCombinedLocation('hw-위치-빌딩', 'hw-위치-상세', 'hw-위치-기타');

    compareFields.forEach(f => {
      let oldVal = (currentAsset as any)[f.key] || '';
      let newVal = (extracted as any)[f.key] || '';
      if (f.key === '위치') { oldVal = currentLocation; newVal = newLocation; }
      if (f.key === 'IP주소') { newVal = getFieldValue('hw-IP주소') || getFieldValue('hw-IP주소-non-server'); }

      if (oldVal !== newVal) {
        diffLogs.push(`${f.label}: ${oldVal || '(없음)'} → ${newVal || '(없음)'}`);
      }
    });

    if (diffLogs.length > 0) {
      state.masterData.logs = state.masterData.logs || [];
      state.masterData.logs.push({
        id: Math.random().toString(36).substring(2, 9),
        assetId: currentAsset.id,
        date: new Date().toISOString().split('T')[0],
        user: '관리자',
        details: diffLogs.join('\n')
      });
    }

    const updated: any = {
      ...currentAsset,
      ...extracted,
      IP주소: getFieldValue('hw-IP주소') || getFieldValue('hw-IP주소-non-server'),
      위치: newLocation
    };

    saveHardwareAsset(updated);
    onSave();
    setEditLock('hw-asset-form', 'view', { 
      saveBtnId: 'btn-save-hw-asset', 
      revertBtnId: 'btn-revert-hw-edit', 
      generateBtnId: 'btn-generate-hw-code',
      addLogBtnId: 'btn-add-hw-log'
    });
    isEditMode = false;
  });

  deleteBtn.addEventListener('click', () => {
    if (currentAsset && confirm('정말로 삭제하시겠습니까?')) {
      deleteHardwareAsset(currentAsset.id);
      onSave();
      closeModalAction();
    }
  });

  logAddBtn.addEventListener('click', () => {
    logModal.classList.remove('hidden');
    (document.getElementById('new-hw-log-date') as HTMLInputElement).value = new Date().toISOString().split('T')[0];
    (document.getElementById('new-hw-log-details') as HTMLTextAreaElement).value = '';
  });

  document.getElementById('btn-close-hw-log')?.addEventListener('click', () => logModal.classList.add('hidden'));
  document.getElementById('btn-cancel-hw-log')?.addEventListener('click', () => logModal.classList.add('hidden'));
  document.getElementById('btn-confirm-hw-log')?.addEventListener('click', () => {
    if (!currentAsset) return;
    const date = (document.getElementById('new-hw-log-date') as HTMLInputElement).value;
    const details = (document.getElementById('new-hw-log-details') as HTMLTextAreaElement).value;
    if (!date || !details) return;
    state.masterData.logs = state.masterData.logs || [];
    state.masterData.logs.push({ id: Math.random().toString(36).substring(2, 9), assetId: currentAsset.id, date, user: '관리자', details });
    logModal.classList.add('hidden');
    renderHwHistory(currentAsset.id);
  });
}
