import { state } from '../../core/state';
import { SoftwareAsset } from '../../core/excelHandler';
import { closeModals } from './BaseModal';
import { openSwUserModal } from './SWUserModal';
import { createIcons, History, Plus, X, Save, Edit2, RotateCcw } from 'lucide';
import { CORP_LIST, TYPE_PREFIX_MAP } from './SharedData';
import { 
  generateOptionsHTML, 
  setFieldValue, 
  getFieldValue, 
  setEditLock,
  createModalFrameHTML,
  autoFillForm,
  autoExtractForm
} from './ModalUtils';

let currentSwAsset: SoftwareAsset | null = null;
let isEditMode = false;

const SW_FIELD_MAP: Record<string, string> = {
  '법인': '법인',
  '자산번호': '자산번호',
  '제품명': '제품명',
  '수량': '수량',
  '금액': '금액',
  '구매일': '구매일',
  '납품업체': '납품업체',
  '비고': '비고',
  '플랫폼명': '플랫폼명',
  '부서': '부서',
  '계정명': '계정명',
  '결제수단': '결제수단',
  '연결카드번호': '연결카드번호',
  '결제일': '결제일',
  '당월청구액': '당월청구액',
  '라이선스유형': '라이선스유형',
  '만료일': '만료일',
  '라이선스키': '라이선스키'
};

const SW_FORM_HTML = `
  <!-- Group 1: 기본 정보 -->
  <div class="form-section-title">기본 정보 (Identity)</div>
  <div class="form-group">
    <label for="sw-법인">구매법인</label>
    <select id="sw-법인" required>${generateOptionsHTML(CORP_LIST)}</select>
  </div>
  <div class="form-group sw-standard-field">
    <label for="sw-자산번호">자산번호</label>
    <div class="input-with-btn">
      <input type="text" id="sw-자산번호" readonly class="is-readonly-field" placeholder="번호 생성을 클릭하세요" />
      <button type="button" id="btn-generate-sw-code" class="btn btn-outline btn-sm">생성</button>
    </div>
  </div>
  <div class="form-group full-width">
    <label for="sw-제품명">제품명 / 서비스명</label>
    <input type="text" id="sw-제품명" required />
  </div>
  <div class="form-group cloud-only"><label for="sw-플랫폼명">플랫폼명</label><input type="text" id="sw-플랫폼명" placeholder="예: AWS, Cafe24" /></div>
  <div class="form-group cloud-only"><label for="sw-부서">담당부서</label><input type="text" id="sw-부서" /></div>

  <!-- Group 2: 라이선스 및 계약 -->
  <div class="form-section-title">라이선스 및 계약 정보</div>
  <div class="form-group sw-standard-field" id="sw-license-type-group"><label for="sw-라이선스유형">라이선스 유형</label><input type="text" id="sw-라이선스유형" /></div>
  <div class="form-group sw-standard-field" id="sw-license-key-group"><label for="sw-라이선스키">라이선스 키</label><input type="text" id="sw-라이선스키" /></div>
  <div class="form-group sw-standard-field"><label for="sw-수량">보유 수량</label><input type="number" id="sw-수량" min="0" /></div>
  <div class="form-group sw-standard-field"><label for="sw-금액">도입 금액</label><input type="text" id="sw-금액" oninput="this.value=this.value.replace(/[^0-9]/g,'').replace(/\\\\B(?=(\\\\d{3})+(?!\\\\d))/g,',')" /></div>

  <div class="form-group cloud-only"><label for="sw-계정명">계정명 (이메일)</label><input type="text" id="sw-계정명" /></div>
  <div class="form-group cloud-only"><label for="sw-결제수단">결제수단</label><select id="sw-결제수단"><option value="">선택안함</option><option value="법인카드">법인카드</option><option value="인보이스">인보이스</option></select></div>
  <div class="form-group cloud-only"><label for="sw-연결카드번호">연결카드번호(뒷4자리)</label><input type="text" id="sw-연결카드번호" maxlength="4" /></div>
  <div class="form-group cloud-only"><label for="sw-결제일">결제일 (기준일)</label><input type="number" id="sw-결제일" min="1" max="31" /></div>
  <div class="form-group cloud-only"><label for="sw-당월청구액">당월 청구액(원)</label><input type="text" id="sw-당월청구액" oninput="this.value=this.value.replace(/[^0-9]/g,'').replace(/\\\\B(?=(\\\\d{3})+(?!\\\\d))/g,',')" /></div>

  <!-- Group 4: 관리 정보 -->
  <div class="form-section-title">관리 및 비고</div>
  <div class="form-group sw-standard-field"><label for="sw-구매일">구매연월</label><input type="text" id="sw-구매일" placeholder="YYYYMM" maxlength="6" /></div>
  <div class="form-group sw-standard-field" id="sw-expiry-group"><label for="sw-만료일">만료일 (구독)</label><input type="text" id="sw-만료일" /></div>
  <div class="form-group sw-standard-field"><label for="sw-납품업체">납품업체</label><input type="text" id="sw-납품업체" /></div>
  <div class="form-group full-width"><label for="sw-비고">비고</label><textarea id="sw-비고" rows="2"></textarea></div>

  <div id="sw-user-section" class="user-management-section" style="margin-top: 2rem;">
    <div class="section-header" style="display:flex; justify-content:space-between; align-items:center; margin-bottom:1rem;">
      <h3 style="font-size:1rem; font-weight:600;">사용자 할당 현황</h3>
      <button type="button" id="btn-open-sw-update" class="btn btn-outline btn-sm">할당 관리 <i data-lucide="plus" style="width:14px; height:14px;"></i></button>
    </div>
    <div id="sw-assigned-users-summary" class="user-summary-grid"></div>
  </div>
`;

function renderSwHistory(swId: string) {
  const container = document.getElementById('sw-history-list');
  if (!container) return;
  const logs = (state.masterData.logs || []).filter(l => l.assetId === swId).sort((a,b) => new Date(b.date).getTime() - new Date(a.date).getTime());
  if (logs.length === 0) { container.innerHTML = '<div class="empty-history">수정 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 renderUserSummary(swId: string) {
  const container = document.getElementById('sw-assigned-users-summary');
  if (!container) return;
  const userMapping = state.masterData.swUsers.find(u => u.sw_id === swId);
  if (!userMapping || !userMapping.userData || userMapping.userData.length === 0) {
    container.innerHTML = '<div class="empty-summary">할당된 사용자가 없습니다.</div>';
    return;
  }
  container.innerHTML = userMapping.userData.map(u => `
    <div class="user-badge-item"><span class="u-name">${u[3] || '이름없음'}</span><span class="u-dept">${u[1] || '부서없음'}</span></div>
  `).join('');
}

function applySwTypeUI(type: string) {
  const cloudFields = document.querySelectorAll('.cloud-only');
  const swFields = document.querySelectorAll('.sw-standard-field');
  const userSection = document.getElementById('sw-user-section');
  const keyGroup = document.getElementById('sw-license-key-group');
  const typeGroup = document.getElementById('sw-license-type-group');
  const expiryGroup = document.getElementById('sw-expiry-group');

  if (type === '클라우드') {
    cloudFields.forEach(el => (el as HTMLElement).style.display = 'flex');
    swFields.forEach(el => (el as HTMLElement).style.display = 'none');
    if (userSection) userSection.style.display = 'none';
  } else {
    cloudFields.forEach(el => (el as HTMLElement).style.display = 'none');
    swFields.forEach(el => (el as HTMLElement).style.display = 'flex');
    if (userSection) userSection.style.display = 'block';
    if (type === '구독SW') {
      if (keyGroup) keyGroup.style.display = 'none';
      if (typeGroup) typeGroup.style.display = 'flex';
      if (expiryGroup) expiryGroup.style.display = 'flex';
    } else {
      if (keyGroup) keyGroup.style.display = 'flex';
      if (typeGroup) typeGroup.style.display = 'none';
      if (expiryGroup) expiryGroup.style.display = 'none';
    }
  }
}

export function openSwModal(asset: SoftwareAsset, mode: 'view' | 'add' = 'view') {
  currentSwAsset = asset;
  const modal = document.getElementById('sw-asset-modal')!;
  setEditLock('sw-asset-form', mode, {
    saveBtnId: 'btn-save-sw-asset',
    revertBtnId: 'btn-revert-sw-edit',
    generateBtnId: 'btn-generate-sw-code',
    addLogBtnId: 'btn-add-sw-log'
  });
  isEditMode = (mode === 'add');
  autoFillForm('sw', asset, SW_FIELD_MAP);
  applySwTypeUI(asset.type);
  renderUserSummary(asset.id);
  renderSwHistory(asset.id);
  modal.classList.remove('hidden');
  createIcons({ icons: { X, History, Plus } });
}

export function initSwModal(onSave: () => void, closeModalsCb: () => void) {
  if (!document.getElementById('sw-asset-modal')) {
    const html = createModalFrameHTML('sw', '소프트웨어 상세 정보', SW_FORM_HTML, {
      historyTitle: '업데이트 내역',
      addLogBtnId: 'btn-add-sw-log'
    });
    document.body.insertAdjacentHTML('beforeend', html);
    const logModalHTML = `
      <div id="sw-log-modal" class="modal-overlay hidden" style="z-index: 1100;">
        <div class="modal-content" style="max-width: 400px;">
          <div class="modal-header"><h2>업데이트 내역 추가</h2><button id="btn-close-sw-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-log-date" /></div><div class="form-group"><label>상세 내용</label><textarea id="new-log-details" rows="3"></textarea></div></div></div>
          <div class="modal-footer"><div></div><div class="footer-actions"><button id="btn-cancel-sw-log" class="btn btn-outline">취소</button><button id="btn-confirm-sw-log" class="btn btn-primary">추가</button></div></div>
        </div>
      </div>
    `;
    document.body.insertAdjacentHTML('beforeend', logModalHTML);
  }

  const form = document.getElementById('sw-asset-form') as HTMLFormElement;
  const saveBtn = document.getElementById('btn-save-sw-asset')!;
  const revertBtn = document.getElementById('btn-revert-sw-edit')!;
  const deleteBtn = document.getElementById('btn-delete-sw-asset')!;
  const userUpdateBtn = document.getElementById('btn-open-sw-update')!;
  const logAddBtn = document.getElementById('btn-add-sw-log')!;
  const logModal = document.getElementById('sw-log-modal')!;

  const closeModalAction = () => { closeModalsCb(); isEditMode = false; };
  document.getElementById('btn-close-sw-modal')?.addEventListener('click', closeModalAction);
  document.getElementById('btn-cancel-sw-modal')?.addEventListener('click', closeModalAction);

  revertBtn.addEventListener('click', () => {
    setEditLock('sw-asset-form', 'view', { 
      saveBtnId: 'btn-save-sw-asset', 
      revertBtnId: 'btn-revert-sw-edit', 
      generateBtnId: 'btn-generate-sw-code',
      addLogBtnId: 'btn-add-sw-log'
    });
    isEditMode = false;
    if (currentSwAsset) openSwModal(currentSwAsset, 'view');
  });

  document.getElementById('btn-generate-sw-code')?.addEventListener('click', async () => {
    const typeValue = getFieldValue('sw-asset-type');
    const purchaseDate = getFieldValue('sw-구매일');
    const typeCode = TYPE_PREFIX_MAP[typeValue] || 'SW';
    const dateStr = purchaseDate.replace(/[^0-9]/g, '');
    if (dateStr.length < 6) { alert('올바른 구매연월(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('sw-자산번호', data.nextCode);
    } catch (err) { alert('자산번호 생성에 실패했습니다.'); }
  });

  // YYYYMM 입력 제한 로직 (숫자 6자리)
  document.getElementById('sw-구매일')?.addEventListener('input', (e) => {
    const target = e.target as HTMLInputElement;
    target.value = target.value.replace(/[^0-9]/g, '').substring(0, 6);
  });

  saveBtn.addEventListener('click', () => {
    if (!currentSwAsset) return;
    if (!isEditMode) {
      setEditLock('sw-asset-form', 'edit', { 
        saveBtnId: 'btn-save-sw-asset', 
        revertBtnId: 'btn-revert-sw-edit', 
        generateBtnId: 'btn-generate-sw-code',
        addLogBtnId: 'btn-add-sw-log'
      });
      isEditMode = true;
      return;
    }
    const extracted = autoExtractForm('sw', SW_FIELD_MAP);
    const updated = { ...currentSwAsset, ...extracted, 수량: parseInt(extracted.수량 || '0') };

    let targetList: SoftwareAsset[] = [];
    if (updated.type === '구독SW') targetList = state.masterData.subSw;
    else if (updated.type === '영구SW') targetList = state.masterData.permSw;
    else targetList = (state.masterData as any).cloud || [];

    const idx = targetList.findIndex(a => a.id === updated.id);
    if (idx > -1) targetList[idx] = updated; else targetList.push(updated);

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

  deleteBtn.addEventListener('click', () => {
    if (currentSwAsset && confirm('삭제하시겠습니까?')) {
      const type = currentSwAsset.type;
      if (type === '구독SW') state.masterData.subSw = state.masterData.subSw.filter(a => a.id !== currentSwAsset!.id);
      else if (type === '영구SW') state.masterData.permSw = state.masterData.permSw.filter(a => a.id !== currentSwAsset!.id);
      onSave(); closeModalAction();
    }
  });

  userUpdateBtn.addEventListener('click', () => { if (currentSwAsset) openSwUserModal(currentSwAsset); });
  logAddBtn.addEventListener('click', () => {
    logModal.classList.remove('hidden');
    (document.getElementById('new-log-date') as HTMLInputElement).value = new Date().toISOString().split('T')[0];
    (document.getElementById('new-log-details') as HTMLTextAreaElement).value = '';
  });
  document.getElementById('btn-close-sw-log')?.addEventListener('click', () => logModal.classList.add('hidden'));
  document.getElementById('btn-cancel-sw-log')?.addEventListener('click', () => logModal.classList.add('hidden'));
  document.getElementById('btn-confirm-sw-log')?.addEventListener('click', () => {
    if (!currentSwAsset) return;
    const date = (document.getElementById('new-log-date') as HTMLInputElement).value;
    const details = (document.getElementById('new-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: currentSwAsset.id, date, user: '관리자', details });
    logModal.classList.add('hidden'); renderSwHistory(currentSwAsset.id);
  });
}