WXProgram/miniprogram/pages/index/modules/warehouseModule.ts

// 仓库模块 - 处理仓库管理、显示、交互
import warehouseService from '../../../services/warehouseService';
import { showToast } from '../../../utils/helpers';
import { DataModule } from './dataModule';

export class WarehouseModule {
  private pageContext: any;
  private dataModule: DataModule;
  private lastLoadTime: number = 0;
  private isLoading: boolean = false;
  private loadPromise: Promise<void> | null = null;
  
  constructor(pageContext: any, dataModule: DataModule) {
    this.pageContext = pageContext;
    this.dataModule = dataModule;
  }
  
  /**
   * 加载仓库数据（带缓存和防抖机制）
   */
  async loadWarehouses(forceRefresh: boolean = false): Promise<void> {
    // 防抖机制：如果正在加载，返回同一个Promise
    if (this.isLoading && this.loadPromise && !forceRefresh) {
      return this.loadPromise;
    }
    
    // 缓存机制：5分钟内不重复加载相同数据
    const now = Date.now();
    const cacheTime = 5 * 60 * 1000; // 5分钟缓存
    if (!forceRefresh && now - this.lastLoadTime < cacheTime) {
      console.log('使用缓存的仓库数据');
      return;
    }
    
    this.isLoading = true;
    this.loadPromise = (async () => {
      try {
        const warehouses = await warehouseService.getWarehouses();
        
        // 更新地图标记点
        this.updateWarehouseMarkers(warehouses);
        
        this.lastLoadTime = Date.now();
        console.log('仓库数据加载完成，数量:', warehouses.length);
      } catch (error) {
        console.error('加载仓库数据失败:', error);
        showToast('加载仓库数据失败');
      } finally {
        this.isLoading = false;
        this.loadPromise = null;
      }
    })();
    
    return this.loadPromise;
  }
  
  /**
   * 更新仓库标记点
   */
  private updateWarehouseMarkers(warehouses: any[]): void {
    const { markers } = this.pageContext.data;
    
    // 移除现有的仓库标记点
    const filteredMarkers = markers.filter((marker: any) => marker.type !== 'warehouse');
    
    // 添加新的仓库标记点
    const warehouseMarkers = warehouses.map((warehouse, index) => {
      // 验证仓库坐标是否有效
      let validLongitude = warehouse.longitude;
      let validLatitude = warehouse.latitude;
      
      if (isNaN(validLongitude) || isNaN(validLatitude)) {
        validLongitude = 102.833722; // 默认经度
        validLatitude = 24.880095;  // 默认纬度
      }
      
      return {
        id: 1000 + index, // 仓库标记点ID从1000开始
        longitude: validLongitude,
        latitude: validLatitude,
        iconPath: '/images/warehouse.png',
        width: 24,
        height: 24,
        zIndex: 10,
        type: 'warehouse',
        data: warehouse
      };
    });
    
    // 更新数据模块中的标记点
    const allMarkers = [...filteredMarkers, ...warehouseMarkers];
    this.dataModule.updateMarkers(allMarkers);
  }
  
  /**
   * 显示仓库详情面板
   */
  showWarehousePanel(warehouse: any, position: { x: number, y: number }): void {
    // 关闭其他面板
    this.pageContext.hideAllPanels();
    
    // 更新数据模块中的当前仓库和面板状态
    this.dataModule.setCurrentWarehouse(warehouse);
    this.dataModule.setPanelPosition(position);
    this.dataModule.toggleWarehouseModal(true, 'bottom');
  }
  
  /**
   * 隐藏仓库详情面板
   */
  hideWarehousePanel(): void {
    // 更新数据模块中的面板状态
    this.dataModule.toggleWarehouseModal(false);
    this.dataModule.setCurrentWarehouse(null);
  }
  
  /**
   * 展开仓库详情面板
   */
  expandWarehousePanel(): void {
    this.dataModule.toggleWarehouseModal(true, 'full');
  }

  /**
   * 收起仓库详情面板
   */
  collapseWarehousePanel(): void {
    this.dataModule.toggleWarehouseModal(true, 'bottom');
  }
  
  /**
   * 处理仓库标记点点击
   */
  onWarehouseMarkerClick(warehouse: any, position: { x: number, y: number }): void {
    console.log('仓库被点击:', warehouse);
    
    // 显示仓库详情面板
    this.showWarehousePanel(warehouse, position);
  }
  
  /**
   * 获取仓库库存状态
   */
  getWarehouseInventoryStatus(warehouse: any): string {
    const capacity = warehouse.capacity || 100;
    const currentStock = warehouse.currentStock || 0;
    const percentage = (currentStock / capacity) * 100;
    
    if (percentage >= 80) {
      return 'high';
    } else if (percentage >= 50) {
      return 'medium';
    } else {
      return 'low';
    }
  }
  
  /**
   * 获取仓库库存状态文本
   */
  getWarehouseInventoryStatusText(warehouse: any): string {
    const status = this.getWarehouseInventoryStatus(warehouse);
    
    switch (status) {
      case 'high':
        return '库存充足';
      case 'medium':
        return '库存适中';
      case 'low':
        return '库存不足';
      default:
        return '未知状态';
    }
  }
  
  /**
   * 获取仓库库存状态颜色
   */
  getWarehouseInventoryStatusColor(warehouse: any): string {
    const status = this.getWarehouseInventoryStatus(warehouse);
    
    switch (status) {
      case 'high':
        return '#52c41a'; // 绿色
      case 'medium':
        return '#faad14'; // 橙色
      case 'low':
        return '#f5222d'; // 红色
      default:
        return '#d9d9d9'; // 灰色
    }
  }
  
  /**
   * 创建新仓库
   */
  async createWarehouse(warehouseData: any): Promise<void> {
    try {
      await warehouseService.createWarehouse(warehouseData);
      
      showToast('仓库创建成功');
      console.log('新仓库创建成功:', warehouseData);
      
      // 不需要重新加载仓库数据，因为仓库数据变化不频繁
      // 用户可以通过手动刷新来获取最新数据
      
    } catch (error) {
      console.error('创建仓库失败:', error);
      showToast('创建仓库失败');
    }
  }
  
  /**
   * 删除仓库
   */
  async deleteWarehouse(warehouseId: number): Promise<void> {
    try {
      await warehouseService.deleteWarehouse(warehouseId);
      
      showToast('仓库删除成功');
      console.log(`仓库 ${warehouseId} 已删除`);
      
      // 不需要重新加载仓库数据，因为仓库数据变化不频繁
      // 用户可以通过手动刷新来获取最新数据
      
    } catch (error) {
      console.error('删除仓库失败:', error);
      showToast('删除仓库失败');
    }
  }

  /**
   * 强制刷新仓库数据（忽略缓存）
   */
  async forceRefreshWarehouses(): Promise<void> {
    console.log('强制刷新仓库数据');
    return this.loadWarehouses(true);
  }
}