CellularManagement/src/CellularManagement.Application/Features/Devices/Commands/DeleteDevice/DeleteDeviceCommandHandler.cs

using MediatR;
using Microsoft.Extensions.Logging;
using CellularManagement.Domain.Common;
using CellularManagement.Domain.Repositories;

namespace CellularManagement.Application.Features.Devices.Commands.DeleteDevice;

/// <summary>
/// 删除设备命令处理器
/// </summary>
public class DeleteDeviceCommandHandler : IRequestHandler<DeleteDeviceCommand, OperationResult<bool>>
{
    private readonly IDeviceRepository _deviceRepository;
    private readonly ILogger<DeleteDeviceCommandHandler> _logger;

    /// <summary>
    /// 初始化删除设备命令处理器
    /// </summary>
    public DeleteDeviceCommandHandler(
        IDeviceRepository deviceRepository,
        ILogger<DeleteDeviceCommandHandler> logger)
    {
        _deviceRepository = deviceRepository;
        _logger = logger;
    }

    /// <summary>
    /// 处理删除设备命令
    /// </summary>
    public async Task<OperationResult<bool>> Handle(DeleteDeviceCommand request, CancellationToken cancellationToken)
    {
        try
        {
            _logger.LogInformation("开始处理删除设备命令，设备ID: {DeviceId}", request.DeviceId);

            var result = await _deviceRepository.DeleteByIdAsync(request.DeviceId, cancellationToken);
            
            if (result)
            {
                _logger.LogInformation("设备删除成功，设备ID: {DeviceId}", request.DeviceId);
                return OperationResult<bool>.CreateSuccess(true);
            }
            else
            {
                _logger.LogWarning("设备删除失败，设备ID: {DeviceId}", request.DeviceId);
                return OperationResult<bool>.CreateFailure("设备删除失败");
            }
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "删除设备时发生错误，设备ID: {DeviceId}", request.DeviceId);
            return OperationResult<bool>.CreateFailure($"删除设备时发生错误: {ex.Message}");
        }
    }
}