// daily-patrol.js - 일일순회점검 페이지 JavaScript

// 전역 상태
let currentSession = null;
let categories = []; // 공장(대분류) 목록
let workplaces = []; // 작업장 목록
let checklistItems = []; // 체크리스트 항목
let checkRecords = {}; // 체크 기록 (workplace_id -> records)
let selectedWorkplace = null;
let itemTypes = []; // 물품 유형
let workplaceItems = []; // 현재 작업장 물품
let isItemEditMode = false;

// 이미지 URL 헬퍼 함수 (정적 파일용 - /api 경로 제외)
function getImageUrl(path) {
  if (!path) return '';
  // 이미 http로 시작하면 그대로 반환
  if (path.startsWith('http')) return path;
  // API_BASE_URL에서 /api 제거하여 정적 파일 서버 URL 생성
  // /uploads 경로는 인증 없이 접근 가능한 정적 파일 경로
  const staticUrl = window.API_BASE_URL.replace(/\/api$/, '');
  return staticUrl + path;
}

// 페이지 초기화
document.addEventListener('DOMContentLoaded', async () => {
  await waitForAxiosConfig();
  initializePage();
});

// axios 설정 대기
function waitForAxiosConfig() {
  return new Promise((resolve) => {
    const check = setInterval(() => {
      if (axios.defaults.baseURL) {
        clearInterval(check);
        resolve();
      }
    }, 50);
    setTimeout(() => {
      clearInterval(check);
      resolve();
    }, 5000);
  });
}

// 페이지 초기화
async function initializePage() {
  // 오늘 날짜 설정
  const today = new Date().toISOString().slice(0, 10);
  document.getElementById('patrolDate').value = today;

  // 시간대 버튼 이벤트
  document.querySelectorAll('.patrol-time-btn').forEach(btn => {
    btn.addEventListener('click', () => {
      document.querySelectorAll('.patrol-time-btn').forEach(b => b.classList.remove('active'));
      btn.classList.add('active');
    });
  });

  // 데이터 로드
  await Promise.all([
    loadCategories(),
    loadItemTypes(),
    loadTodayStatus()
  ]);
}

// 공장(대분류) 목록 로드
async function loadCategories() {
  try {
    const response = await axios.get('/workplaces/categories');
    if (response.data.success) {
      categories = response.data.data;
      const select = document.getElementById('categorySelect');
      select.innerHTML = '<option value="">공장 선택...</option>' +
        categories.map(c => `<option value="${c.category_id}">${c.category_name}</option>`).join('');
    }
  } catch (error) {
    console.error('공장 목록 로드 실패:', error);
  }
}

// 물품 유형 로드
async function loadItemTypes() {
  try {
    const response = await axios.get('/patrol/item-types');
    if (response.data.success) {
      itemTypes = response.data.data;
      renderItemTypesSelect();
      renderItemsLegend();
    }
  } catch (error) {
    console.error('물품 유형 로드 실패:', error);
  }
}

// 오늘 점검 현황 로드
async function loadTodayStatus() {
  try {
    const response = await axios.get('/patrol/today-status');
    if (response.data.success) {
      renderTodayStatus(response.data.data);
    }
  } catch (error) {
    console.error('오늘 현황 로드 실패:', error);
  }
}

// 오늘 점검 현황 렌더링
function renderTodayStatus(statusList) {
  const container = document.getElementById('todayStatusSummary');
  if (!statusList || statusList.length === 0) {
    container.innerHTML = `
      <div class="status-card">
        <div class="status-label">오전</div>
        <div class="status-value pending">미점검</div>
      </div>
      <div class="status-card">
        <div class="status-label">오후</div>
        <div class="status-value pending">미점검</div>
      </div>
    `;
    return;
  }

  const morning = statusList.find(s => s.patrol_time === 'morning');
  const afternoon = statusList.find(s => s.patrol_time === 'afternoon');

  container.innerHTML = `
    <div class="status-card">
      <div class="status-label">오전</div>
      <div class="status-value ${morning?.status === 'completed' ? 'completed' : 'pending'}">
        ${morning ? (morning.status === 'completed' ? '완료' : '진행중') : '미점검'}
      </div>
      ${morning ? `<div class="status-sub">${morning.inspector_name || ''}</div>` : ''}
    </div>
    <div class="status-card">
      <div class="status-label">오후</div>
      <div class="status-value ${afternoon?.status === 'completed' ? 'completed' : 'pending'}">
        ${afternoon ? (afternoon.status === 'completed' ? '완료' : '진행중') : '미점검'}
      </div>
      ${afternoon ? `<div class="status-sub">${afternoon.inspector_name || ''}</div>` : ''}
    </div>
  `;
}

// 순회점검 시작
async function startPatrol() {
  const patrolDate = document.getElementById('patrolDate').value;
  const patrolTime = document.querySelector('.patrol-time-btn.active')?.dataset.time;
  const categoryId = document.getElementById('categorySelect').value;

  if (!patrolDate || !patrolTime || !categoryId) {
    alert('점검 일자, 시간대, 공장을 모두 선택해주세요.');
    return;
  }

  try {
    // 세션 생성 또는 조회
    const response = await axios.post('/patrol/sessions', {
      patrol_date: patrolDate,
      patrol_time: patrolTime,
      category_id: categoryId
    });

    if (response.data.success) {
      currentSession = response.data.data;
      currentSession.patrol_date = patrolDate;
      currentSession.patrol_time = patrolTime;
      currentSession.category_id = categoryId;

      // 작업장 목록 로드
      await loadWorkplaces(categoryId);

      // 체크리스트 항목 로드
      await loadChecklistItems(categoryId);

      // 점검 영역 표시
      document.getElementById('patrolArea').style.display = 'block';
      renderSessionInfo();
      renderWorkplaceMap();

      // 시작 버튼 비활성화
      document.getElementById('startPatrolBtn').textContent = '점검 진행중...';
      document.getElementById('startPatrolBtn').disabled = true;
    }
  } catch (error) {
    console.error('순회점검 시작 실패:', error);
    alert('순회점검을 시작할 수 없습니다.');
  }
}

// 작업장 목록 로드
async function loadWorkplaces(categoryId) {
  try {
    const response = await axios.get(`/workplaces?category_id=${categoryId}`);
    if (response.data.success) {
      workplaces = response.data.data;
    }
  } catch (error) {
    console.error('작업장 목록 로드 실패:', error);
  }
}

// 체크리스트 항목 로드
async function loadChecklistItems(categoryId) {
  try {
    const response = await axios.get(`/patrol/checklist?category_id=${categoryId}`);
    if (response.data.success) {
      checklistItems = response.data.data.items;
    }
  } catch (error) {
    console.error('체크리스트 항목 로드 실패:', error);
  }
}

// 세션 정보 렌더링
function renderSessionInfo() {
  const container = document.getElementById('sessionInfo');
  const category = categories.find(c => c.category_id == currentSession.category_id);
  const checkedCount = Object.values(checkRecords).flat().filter(r => r.is_checked).length;
  const totalCount = workplaces.length * checklistItems.length;
  const progress = totalCount > 0 ? Math.round(checkedCount / totalCount * 100) : 0;

  container.innerHTML = `
    <div class="session-info">
      <div class="session-info-item">
        <span class="session-info-label">점검일자</span>
        <span class="session-info-value">${formatDate(currentSession.patrol_date)}</span>
      </div>
      <div class="session-info-item">
        <span class="session-info-label">시간대</span>
        <span class="session-info-value">${currentSession.patrol_time === 'morning' ? '오전' : '오후'}</span>
      </div>
      <div class="session-info-item">
        <span class="session-info-label">공장</span>
        <span class="session-info-value">${category?.category_name || ''}</span>
      </div>
    </div>
    <div class="session-progress">
      <div class="progress-bar">
        <div class="progress-fill" style="width: ${progress}%"></div>
      </div>
      <span class="progress-text">${progress}%</span>
    </div>
  `;
}

// 작업장 지도/목록 렌더링
function renderWorkplaceMap() {
  const mapContainer = document.getElementById('patrolMapContainer');
  const listContainer = document.getElementById('workplaceListContainer');
  const category = categories.find(c => c.category_id == currentSession.category_id);

  // 지도 이미지가 있으면 지도 표시
  if (category?.layout_image) {
    mapContainer.innerHTML = `<img src="${getImageUrl(category.layout_image)}" alt="${category.category_name} 지도">`;
    mapContainer.style.display = 'block';
    listContainer.style.display = 'none';

    // 작업장 마커 추가
    workplaces.forEach(wp => {
      if (wp.x_percent && wp.y_percent) {
        const marker = document.createElement('div');
        marker.className = 'workplace-marker';
        marker.style.left = `${wp.x_percent}%`;
        marker.style.top = `${wp.y_percent}%`;
        marker.textContent = wp.workplace_name;
        marker.dataset.workplaceId = wp.workplace_id;
        marker.onclick = () => selectWorkplace(wp.workplace_id);

        // 점검 상태에 따른 스타일
        const records = checkRecords[wp.workplace_id];
        if (records && records.some(r => r.is_checked)) {
          marker.classList.add(records.every(r => r.is_checked) ? 'completed' : 'in-progress');
        }

        mapContainer.appendChild(marker);
      }
    });
  } else {
    // 지도 없으면 카드 목록으로 표시
    mapContainer.style.display = 'none';
    listContainer.style.display = 'grid';

    listContainer.innerHTML = workplaces.map(wp => {
      const records = checkRecords[wp.workplace_id];
      const isCompleted = records && records.length > 0 && records.every(r => r.is_checked);
      const isInProgress = records && records.some(r => r.is_checked);

      return `
        <div class="workplace-card ${isCompleted ? 'completed' : ''} ${selectedWorkplace?.workplace_id === wp.workplace_id ? 'selected' : ''}"
             data-workplace-id="${wp.workplace_id}"
             onclick="selectWorkplace(${wp.workplace_id})">
          <div class="workplace-card-name">${wp.workplace_name}</div>
          <div class="workplace-card-status">
            ${isCompleted ? '점검완료' : (isInProgress ? '점검중' : '미점검')}
          </div>
        </div>
      `;
    }).join('');
  }
}

// 작업장 선택
async function selectWorkplace(workplaceId) {
  selectedWorkplace = workplaces.find(w => w.workplace_id === workplaceId);

  // 마커/카드 선택 상태 업데이트
  document.querySelectorAll('.workplace-marker, .workplace-card').forEach(el => {
    el.classList.remove('selected');
    if (el.dataset.workplaceId == workplaceId) {
      el.classList.add('selected');
    }
  });

  // 기존 체크 기록 로드
  if (!checkRecords[workplaceId]) {
    try {
      const response = await axios.get(`/patrol/sessions/${currentSession.session_id}/records?workplace_id=${workplaceId}`);
      if (response.data.success) {
        checkRecords[workplaceId] = response.data.data;
      }
    } catch (error) {
      console.error('체크 기록 로드 실패:', error);
      checkRecords[workplaceId] = [];
    }
  }

  // 체크리스트 렌더링
  renderChecklist(workplaceId);

  // 물품 현황 로드 및 표시
  await loadWorkplaceItems(workplaceId);

  // 액션 버튼 표시
  document.getElementById('checklistActions').style.display = 'flex';
}

// 체크리스트 렌더링
function renderChecklist(workplaceId) {
  const header = document.getElementById('checklistHeader');
  const content = document.getElementById('checklistContent');
  const workplace = workplaces.find(w => w.workplace_id === workplaceId);

  header.innerHTML = `
    <h3>${workplace?.workplace_name || ''} 체크리스트</h3>
    <p class="checklist-subtitle">각 항목을 점검하고 체크해주세요</p>
  `;

  // 카테고리별 그룹화
  const grouped = {};
  checklistItems.forEach(item => {
    if (!grouped[item.check_category]) {
      grouped[item.check_category] = [];
    }
    grouped[item.check_category].push(item);
  });

  const records = checkRecords[workplaceId] || [];

  content.innerHTML = Object.entries(grouped).map(([category, items]) => `
    <div class="checklist-category">
      <div class="checklist-category-title">${getCategoryName(category)}</div>
      ${items.map(item => {
        const record = records.find(r => r.check_item_id === item.item_id);
        const isChecked = record?.is_checked;
        const checkResult = record?.check_result;

        return `
          <div class="check-item ${isChecked ? 'checked' : ''}"
               data-item-id="${item.item_id}"
               onclick="toggleCheckItem(${workplaceId}, ${item.item_id})">
            <div class="check-item-checkbox">
              ${isChecked ? '&#10003;' : ''}
            </div>
            <div class="check-item-content">
              <div class="check-item-text">
                ${item.check_item}
                ${item.is_required ? '<span class="check-item-required">*</span>' : ''}
              </div>
              ${isChecked ? `
                <div class="check-result-selector" onclick="event.stopPropagation()">
                  <button class="check-result-btn good ${checkResult === 'good' ? 'active' : ''}"
                          onclick="setCheckResult(${workplaceId}, ${item.item_id}, 'good')">양호</button>
                  <button class="check-result-btn warning ${checkResult === 'warning' ? 'active' : ''}"
                          onclick="setCheckResult(${workplaceId}, ${item.item_id}, 'warning')">주의</button>
                  <button class="check-result-btn bad ${checkResult === 'bad' ? 'active' : ''}"
                          onclick="setCheckResult(${workplaceId}, ${item.item_id}, 'bad')">불량</button>
                </div>
              ` : ''}
            </div>
          </div>
        `;
      }).join('')}
    </div>
  `).join('');
}

// 카테고리명 변환
function getCategoryName(code) {
  const names = {
    'SAFETY': '안전',
    'ORGANIZATION': '정리정돈',
    'EQUIPMENT': '설비',
    'ENVIRONMENT': '환경'
  };
  return names[code] || code;
}

// 체크 항목 토글
function toggleCheckItem(workplaceId, itemId) {
  if (!checkRecords[workplaceId]) {
    checkRecords[workplaceId] = [];
  }

  const records = checkRecords[workplaceId];
  const existingIndex = records.findIndex(r => r.check_item_id === itemId);

  if (existingIndex >= 0) {
    records[existingIndex].is_checked = !records[existingIndex].is_checked;
    if (!records[existingIndex].is_checked) {
      records[existingIndex].check_result = null;
    }
  } else {
    records.push({
      check_item_id: itemId,
      is_checked: true,
      check_result: 'good',
      note: null
    });
  }

  renderChecklist(workplaceId);
  renderWorkplaceMap();
  renderSessionInfo();
}

// 체크 결과 설정
function setCheckResult(workplaceId, itemId, result) {
  const records = checkRecords[workplaceId];
  const record = records.find(r => r.check_item_id === itemId);
  if (record) {
    record.check_result = result;
    renderChecklist(workplaceId);
  }
}

// 임시 저장
async function saveChecklistDraft() {
  if (!selectedWorkplace) return;

  try {
    const records = checkRecords[selectedWorkplace.workplace_id] || [];
    await axios.post(`/patrol/sessions/${currentSession.session_id}/records/batch`, {
      workplace_id: selectedWorkplace.workplace_id,
      records: records
    });
    alert('임시 저장되었습니다.');
  } catch (error) {
    console.error('임시 저장 실패:', error);
    alert('저장에 실패했습니다.');
  }
}

// 저장 후 다음
async function saveChecklist() {
  if (!selectedWorkplace) return;

  try {
    const records = checkRecords[selectedWorkplace.workplace_id] || [];
    await axios.post(`/patrol/sessions/${currentSession.session_id}/records/batch`, {
      workplace_id: selectedWorkplace.workplace_id,
      records: records
    });

    // 다음 미점검 작업장으로 이동
    const currentIndex = workplaces.findIndex(w => w.workplace_id === selectedWorkplace.workplace_id);
    const nextWorkplace = workplaces.slice(currentIndex + 1).find(w => {
      const records = checkRecords[w.workplace_id];
      return !records || records.length === 0 || !records.every(r => r.is_checked);
    });

    if (nextWorkplace) {
      selectWorkplace(nextWorkplace.workplace_id);
    } else {
      alert('모든 작업장 점검이 완료되었습니다!');
    }
  } catch (error) {
    console.error('저장 실패:', error);
    alert('저장에 실패했습니다.');
  }
}

// 순회점검 완료
async function completePatrol() {
  if (!currentSession) return;

  // 미점검 작업장 확인
  const uncheckedCount = workplaces.filter(w => {
    const records = checkRecords[w.workplace_id];
    return !records || records.length === 0;
  }).length;

  if (uncheckedCount > 0) {
    if (!confirm(`아직 ${uncheckedCount}개 작업장이 미점검 상태입니다. 그래도 완료하시겠습니까?`)) {
      return;
    }
  }

  try {
    const notes = document.getElementById('patrolNotes').value;
    if (notes) {
      await axios.patch(`/patrol/sessions/${currentSession.session_id}/notes`, { notes });
    }

    await axios.patch(`/patrol/sessions/${currentSession.session_id}/complete`);

    alert('순회점검이 완료되었습니다.');
    location.reload();
  } catch (error) {
    console.error('순회점검 완료 실패:', error);
    alert('순회점검 완료에 실패했습니다.');
  }
}

// ==================== 물품 현황 ====================

// 작업장 물품 로드
async function loadWorkplaceItems(workplaceId) {
  try {
    const response = await axios.get(`/patrol/workplaces/${workplaceId}/items`);
    if (response.data.success) {
      workplaceItems = response.data.data;
      renderItemsSection(workplaceId);
    }
  } catch (error) {
    console.error('물품 로드 실패:', error);
    workplaceItems = [];
  }
}

// 물품 섹션 렌더링
function renderItemsSection(workplaceId) {
  const section = document.getElementById('itemsSection');
  const workplace = workplaces.find(w => w.workplace_id === workplaceId);
  const container = document.getElementById('itemsMapContainer');

  document.getElementById('selectedWorkplaceName').textContent = workplace?.workplace_name || '';

  // 작업장 레이아웃 이미지가 있으면 표시
  if (workplace?.layout_image) {
    container.innerHTML = `<img src="${getImageUrl(workplace.layout_image)}" alt="${workplace.workplace_name}">`;

    // 물품 마커 추가
    workplaceItems.forEach(item => {
      if (item.x_percent && item.y_percent) {
        const marker = document.createElement('div');
        marker.className = `item-marker ${item.item_type}`;
        marker.style.left = `${item.x_percent}%`;
        marker.style.top = `${item.y_percent}%`;
        marker.style.width = `${item.width_percent || 5}%`;
        marker.style.height = `${item.height_percent || 5}%`;
        marker.innerHTML = item.icon || getItemTypeIcon(item.item_type);
        marker.title = `${item.item_name || item.type_name} (${item.quantity}개)`;
        marker.dataset.itemId = item.item_id;
        marker.onclick = () => openItemModal(item);
        container.appendChild(marker);
      }
    });
  } else {
    container.innerHTML = '<p style="padding: 2rem; text-align: center; color: #64748b;">작업장 레이아웃 이미지가 없습니다.</p>';
  }

  section.style.display = 'block';
}

// 물품 유형 아이콘
function getItemTypeIcon(typeCode) {
  const icons = {
    'container': '📦',
    'plate': '🔲',
    'material': '🧱',
    'tool': '🔧',
    'other': '📍'
  };
  return icons[typeCode] || '📍';
}

// 물품 유형 셀렉트 렌더링
function renderItemTypesSelect() {
  const select = document.getElementById('itemType');
  if (!select) return;
  select.innerHTML = itemTypes.map(t =>
    `<option value="${t.type_code}">${t.icon} ${t.type_name}</option>`
  ).join('');
}

// 물품 범례 렌더링
function renderItemsLegend() {
  const container = document.getElementById('itemsLegend');
  if (!container) return;
  container.innerHTML = itemTypes.map(t => `
    <div class="item-legend-item">
      <div class="item-legend-icon" style="background: ${t.color}20; border: 1px solid ${t.color};">
        ${t.icon}
      </div>
      <span>${t.type_name}</span>
    </div>
  `).join('');
}

// 편집 모드 토글
function toggleItemEditMode() {
  isItemEditMode = !isItemEditMode;
  document.getElementById('itemEditModeText').textContent = isItemEditMode ? '편집모드 종료' : '편집모드';

  if (isItemEditMode) {
    // 지도 클릭으로 물품 추가
    const container = document.getElementById('itemsMapContainer');
    container.style.cursor = 'crosshair';
    container.onclick = (e) => {
      if (e.target === container || e.target.tagName === 'IMG') {
        const rect = container.getBoundingClientRect();
        const x = ((e.clientX - rect.left) / rect.width * 100).toFixed(2);
        const y = ((e.clientY - rect.top) / rect.height * 100).toFixed(2);
        openItemModal(null, x, y);
      }
    };
  } else {
    const container = document.getElementById('itemsMapContainer');
    container.style.cursor = 'default';
    container.onclick = null;
  }
}

// 물품 모달 열기
function openItemModal(item = null, x = null, y = null) {
  const modal = document.getElementById('itemModal');
  const title = document.getElementById('itemModalTitle');
  const deleteBtn = document.getElementById('deleteItemBtn');

  if (item) {
    title.textContent = '물품 수정';
    document.getElementById('itemId').value = item.item_id;
    document.getElementById('itemType').value = item.item_type;
    document.getElementById('itemName').value = item.item_name || '';
    document.getElementById('itemQuantity').value = item.quantity || 1;
    deleteBtn.style.display = 'inline-block';
  } else {
    title.textContent = '물품 추가';
    document.getElementById('itemForm').reset();
    document.getElementById('itemId').value = '';
    document.getElementById('itemId').dataset.x = x;
    document.getElementById('itemId').dataset.y = y;
    deleteBtn.style.display = 'none';
  }

  modal.style.display = 'flex';
}

// 물품 모달 닫기
function closeItemModal() {
  document.getElementById('itemModal').style.display = 'none';
}

// 물품 저장
async function saveItem() {
  if (!selectedWorkplace) return;

  const itemId = document.getElementById('itemId').value;
  const data = {
    item_type: document.getElementById('itemType').value,
    item_name: document.getElementById('itemName').value,
    quantity: parseInt(document.getElementById('itemQuantity').value) || 1,
    patrol_session_id: currentSession?.session_id
  };

  // 새 물품일 경우 위치 추가
  if (!itemId) {
    data.x_percent = parseFloat(document.getElementById('itemId').dataset.x);
    data.y_percent = parseFloat(document.getElementById('itemId').dataset.y);
    data.width_percent = 5;
    data.height_percent = 5;
  }

  try {
    if (itemId) {
      await axios.put(`/patrol/items/${itemId}`, data);
    } else {
      await axios.post(`/patrol/workplaces/${selectedWorkplace.workplace_id}/items`, data);
    }

    closeItemModal();
    await loadWorkplaceItems(selectedWorkplace.workplace_id);
  } catch (error) {
    console.error('물품 저장 실패:', error);
    alert('물품 저장에 실패했습니다.');
  }
}

// 물품 삭제
async function deleteItem() {
  const itemId = document.getElementById('itemId').value;
  if (!itemId) return;

  if (!confirm('이 물품을 삭제하시겠습니까?')) return;

  try {
    await axios.delete(`/patrol/items/${itemId}`);
    closeItemModal();
    await loadWorkplaceItems(selectedWorkplace.workplace_id);
  } catch (error) {
    console.error('물품 삭제 실패:', error);
    alert('물품 삭제에 실패했습니다.');
  }
}

// 유틸리티 함수
function formatDate(dateStr) {
  if (!dateStr) return '';
  const date = new Date(dateStr);
  return date.toLocaleDateString('ko-KR', { year: 'numeric', month: 'long', day: 'numeric', weekday: 'short' });
}

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