车辆管理系统是什么?全面指南

// 车辆实体类定义
public class Vehicle
{
    public int Id { get; set; }
    public string LicensePlate { get; set; }
    public string Model { get; set; }
    public DateTime PurchaseDate { get; set; }
    public decimal FuelConsumption { get; set; }
    public VehicleStatus Status { get; set; }
}

// 车辆状态枚举
public enum VehicleStatus
{
    Available,
    InUse,
    Maintenance,
    Retired
}

// 车辆服务类
public class VehicleService
{
    private readonly FleetManagementContext _context;
    
    public VehicleService(FleetManagementContext context)
    {
        _context = context;
    }
    
    // 获取可用车辆列表
    public async Task<>> GetAvailableVehiclesAsync()
    {
        return await _context.Vehicles
            .Where(v => v.Status == VehicleStatus.Available)
            .ToListAsync();
    }
}

// 车辆位置监控组件
class VehicleTracker {
  constructor(mapElementId) {
    this.map = L.map(mapElementId).setView([39.9042, 116.4074], 10);
    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png').addTo(this.map);
    this.vehicleMarkers = new Map();
  }
  
  // 更新车辆位置
  updateVehiclePosition(vehicleId, lat, lng) {
    if (this.vehicleMarkers.has(vehicleId)) {
      this.vehicleMarkers.get(vehicleId).setLatLng([lat, lng]);
    } else {
      const marker = L.marker([lat, lng]).addTo(this.map);
      this.vehicleMarkers.set(vehicleId, marker);
    }
  }
  
  // 获取车辆分布统计
  getVehicleDistribution() {
    const distribution = {};
    this.vehicleMarkers.forEach((marker, vehicleId) => {
      // 实现分布统计逻辑
    });
    return distribution;
  }
}