// equipment-management.js
// 설비 관리 페이지 JavaScript

let equipments = [];
let workplaces = [];
let equipmentTypes = [];
let currentEquipment = null;

// 페이지 로드 시 초기화
document.addEventListener('DOMContentLoaded', async () => {
  await loadInitialData();
});

// 초기 데이터 로드
async function loadInitialData() {
  try {
    await Promise.all([
      loadEquipments(),
      loadWorkplaces(),
      loadEquipmentTypes()
    ]);
  } catch (error) {
    console.error('초기 데이터 로드 실패:', error);
    alert('데이터를 불러오는데 실패했습니다.');
  }
}

// 설비 목록 로드
async function loadEquipments() {
  try {
    const response = await axios.get('/api/equipments');
    if (response.data.success) {
      equipments = response.data.data;
      renderEquipmentList();
    }
  } catch (error) {
    console.error('설비 목록 로드 실패:', error);
    throw error;
  }
}

// 작업장 목록 로드
async function loadWorkplaces() {
  try {
    const response = await axios.get('/api/workplaces');
    if (response.data.success) {
      workplaces = response.data.data;
      populateWorkplaceFilters();
    }
  } catch (error) {
    console.error('작업장 목록 로드 실패:', error);
    throw error;
  }
}

// 설비 유형 목록 로드
async function loadEquipmentTypes() {
  try {
    const response = await axios.get('/api/equipments/types');
    if (response.data.success) {
      equipmentTypes = response.data.data;
      populateTypeFilter();
    }
  } catch (error) {
    console.error('설비 유형 로드 실패:', error);
    // 실패해도 계속 진행 (유형이 없을 수 있음)
  }
}

// 작업장 필터 채우기
function populateWorkplaceFilters() {
  const filterWorkplace = document.getElementById('filterWorkplace');
  const modalWorkplace = document.getElementById('workplaceId');

  const workplaceOptions = workplaces.map(w =>
    `<option value="${w.workplace_id}">${w.category_name} - ${w.workplace_name}</option>`
  ).join('');

  filterWorkplace.innerHTML = '<option value="">전체</option>' + workplaceOptions;
  modalWorkplace.innerHTML = '<option value="">선택 안함</option>' + workplaceOptions;
}

// 설비 유형 필터 채우기
function populateTypeFilter() {
  const filterType = document.getElementById('filterType');
  const typeOptions = equipmentTypes.map(type =>
    `<option value="${type}">${type}</option>`
  ).join('');
  filterType.innerHTML = '<option value="">전체</option>' + typeOptions;
}

// 설비 목록 렌더링
function renderEquipmentList() {
  const container = document.getElementById('equipmentList');

  if (equipments.length === 0) {
    container.innerHTML = `
      <div class="empty-state">
        <p>등록된 설비가 없습니다.</p>
        <button class="btn btn-primary" onclick="openEquipmentModal()">설비 추가하기</button>
      </div>
    `;
    return;
  }

  const tableHTML = `
    <table class="data-table">
      <thead>
        <tr>
          <th>설비 코드</th>
          <th>설비명</th>
          <th>유형</th>
          <th>작업장</th>
          <th>제조사</th>
          <th>모델명</th>
          <th>상태</th>
          <th>관리</th>
        </tr>
      </thead>
      <tbody>
        ${equipments.map(equipment => `
          <tr>
            <td><strong>${equipment.equipment_code}</strong></td>
            <td>${equipment.equipment_name}</td>
            <td>${equipment.equipment_type || '-'}</td>
            <td>${equipment.workplace_name || '-'}</td>
            <td>${equipment.manufacturer || '-'}</td>
            <td>${equipment.model_name || '-'}</td>
            <td>
              <span class="status-badge status-${equipment.status}">
                ${getStatusText(equipment.status)}
              </span>
            </td>
            <td>
              <div class="action-buttons">
                <button class="btn-small btn-primary" onclick="editEquipment(${equipment.equipment_id})" title="수정">
                  ✏️
                </button>
                <button class="btn-small btn-danger" onclick="deleteEquipment(${equipment.equipment_id})" title="삭제">
                  🗑️
                </button>
              </div>
            </td>
          </tr>
        `).join('')}
      </tbody>
    </table>
  `;

  container.innerHTML = tableHTML;
}

// 상태 텍스트 변환
function getStatusText(status) {
  const statusMap = {
    'active': '활성',
    'maintenance': '정비중',
    'inactive': '비활성'
  };
  return statusMap[status] || status;
}

// 필터링
function filterEquipments() {
  const workplaceFilter = document.getElementById('filterWorkplace').value;
  const typeFilter = document.getElementById('filterType').value;
  const statusFilter = document.getElementById('filterStatus').value;
  const searchTerm = document.getElementById('searchInput').value.toLowerCase();

  // API에서 필터링된 데이터를 가져오는 것이 더 효율적이지만,
  // 클라이언트 측에서도 필터링을 적용합니다.
  let filtered = [...equipments];

  if (workplaceFilter) {
    filtered = filtered.filter(e => e.workplace_id == workplaceFilter);
  }

  if (typeFilter) {
    filtered = filtered.filter(e => e.equipment_type === typeFilter);
  }

  if (statusFilter) {
    filtered = filtered.filter(e => e.status === statusFilter);
  }

  if (searchTerm) {
    filtered = filtered.filter(e =>
      e.equipment_name.toLowerCase().includes(searchTerm) ||
      e.equipment_code.toLowerCase().includes(searchTerm)
    );
  }

  // 임시로 equipments를 필터링된 것으로 교체하고 렌더링
  const originalEquipments = equipments;
  equipments = filtered;
  renderEquipmentList();
  equipments = originalEquipments;
}

// 설비 추가 모달 열기
function openEquipmentModal(equipmentId = null) {
  currentEquipment = equipmentId;
  const modal = document.getElementById('equipmentModal');
  const modalTitle = document.getElementById('modalTitle');
  const form = document.getElementById('equipmentForm');

  form.reset();
  document.getElementById('equipmentId').value = '';

  if (equipmentId) {
    modalTitle.textContent = '설비 수정';
    loadEquipmentData(equipmentId);
  } else {
    modalTitle.textContent = '설비 추가';
  }

  modal.style.display = 'flex';
}

// 설비 데이터 로드 (수정용)
async function loadEquipmentData(equipmentId) {
  try {
    const response = await axios.get(`/api/equipments/${equipmentId}`);
    if (response.data.success) {
      const equipment = response.data.data;

      document.getElementById('equipmentId').value = equipment.equipment_id;
      document.getElementById('equipmentCode').value = equipment.equipment_code;
      document.getElementById('equipmentName').value = equipment.equipment_name;
      document.getElementById('equipmentType').value = equipment.equipment_type || '';
      document.getElementById('workplaceId').value = equipment.workplace_id || '';
      document.getElementById('manufacturer').value = equipment.manufacturer || '';
      document.getElementById('modelName').value = equipment.model_name || '';
      document.getElementById('serialNumber').value = equipment.serial_number || '';
      document.getElementById('installationDate').value = equipment.installation_date ? equipment.installation_date.split('T')[0] : '';
      document.getElementById('equipmentStatus').value = equipment.status || 'active';
      document.getElementById('specifications').value = equipment.specifications || '';
      document.getElementById('notes').value = equipment.notes || '';
    }
  } catch (error) {
    console.error('설비 데이터 로드 실패:', error);
    alert('설비 정보를 불러오는데 실패했습니다.');
  }
}

// 설비 모달 닫기
function closeEquipmentModal() {
  document.getElementById('equipmentModal').style.display = 'none';
  currentEquipment = null;
}

// 설비 저장
async function saveEquipment() {
  const equipmentId = document.getElementById('equipmentId').value;
  const equipmentData = {
    equipment_code: document.getElementById('equipmentCode').value.trim(),
    equipment_name: document.getElementById('equipmentName').value.trim(),
    equipment_type: document.getElementById('equipmentType').value.trim() || null,
    workplace_id: document.getElementById('workplaceId').value || null,
    manufacturer: document.getElementById('manufacturer').value.trim() || null,
    model_name: document.getElementById('modelName').value.trim() || null,
    serial_number: document.getElementById('serialNumber').value.trim() || null,
    installation_date: document.getElementById('installationDate').value || null,
    status: document.getElementById('equipmentStatus').value,
    specifications: document.getElementById('specifications').value.trim() || null,
    notes: document.getElementById('notes').value.trim() || null
  };

  // 유효성 검사
  if (!equipmentData.equipment_code) {
    alert('설비 코드를 입력해주세요.');
    return;
  }

  if (!equipmentData.equipment_name) {
    alert('설비명을 입력해주세요.');
    return;
  }

  try {
    let response;
    if (equipmentId) {
      // 수정
      response = await axios.put(`/api/equipments/${equipmentId}`, equipmentData);
    } else {
      // 추가
      response = await axios.post('/api/equipments', equipmentData);
    }

    if (response.data.success) {
      alert(equipmentId ? '설비가 수정되었습니다.' : '설비가 추가되었습니다.');
      closeEquipmentModal();
      await loadEquipments();
      await loadEquipmentTypes(); // 새로운 유형이 추가될 수 있으므로
    }
  } catch (error) {
    console.error('설비 저장 실패:', error);
    if (error.response && error.response.data && error.response.data.message) {
      alert(error.response.data.message);
    } else {
      alert('설비 저장 중 오류가 발생했습니다.');
    }
  }
}

// 설비 수정
function editEquipment(equipmentId) {
  openEquipmentModal(equipmentId);
}

// 설비 삭제
async function deleteEquipment(equipmentId) {
  const equipment = equipments.find(e => e.equipment_id === equipmentId);
  if (!equipment) return;

  if (!confirm(`'${equipment.equipment_name}' 설비를 삭제하시겠습니까?`)) {
    return;
  }

  try {
    const response = await axios.delete(`/api/equipments/${equipmentId}`);
    if (response.data.success) {
      alert('설비가 삭제되었습니다.');
      await loadEquipments();
    }
  } catch (error) {
    console.error('설비 삭제 실패:', error);
    alert('설비 삭제 중 오류가 발생했습니다.');
  }
}

// ESC 키로 모달 닫기
document.addEventListener('keydown', (e) => {
  if (e.key === 'Escape') {
    closeEquipmentModal();
  }
});

// 모달 외부 클릭 시 닫기
document.getElementById('equipmentModal').addEventListener('click', (e) => {
  if (e.target.id === 'equipmentModal') {
    closeEquipmentModal();
  }
});