50 lines
2.4 KiB
C#
50 lines
2.4 KiB
C#
using Evergreen.Health.Application.Health.Devices.Contracts;
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using Evergreen.Health.Application.Health.Integrations.HomeAssistant;
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using Microsoft.Extensions.Options;
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namespace Evergreen.Health.Application.Health.Scenes;
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public interface IDeviceActionSafetyRule
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{
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Task ValidateAsync(DeviceCommand command, CancellationToken cancellationToken);
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void Accepted(DeviceCommand command, DateTimeOffset now);
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}
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public sealed class SceneLightSafetyState
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{
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private readonly object _lock = new();
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private DateTimeOffset? _offAt;
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public DateTimeOffset? OffAt { get { lock (_lock) return _offAt; } }
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public void MarkOff(DateTimeOffset now) { lock (_lock) _offAt = now; }
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public void MarkOn() { lock (_lock) _offAt = null; }
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}
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/// <summary>只依赖“启动按摩”的动作意图，不知道床垫实体。防止灯灭后较晚的启动指令再开启按摩。</summary>
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public sealed class LightMassageSafetyRule : IDeviceActionSafetyRule
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{
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private readonly IHomeAssistantGateway _gateway;
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private readonly string _lightEntity;
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private readonly SceneLightSafetyState _state;
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public LightMassageSafetyRule(IHomeAssistantGateway gateway, IOptions<HomeAssistantOptions> options,
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SceneLightSafetyState state) => (_gateway, _lightEntity, _state) = (gateway, options.Value.Entities.AmbientLight, state);
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public async Task ValidateAsync(DeviceCommand command, CancellationToken cancellationToken)
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{
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if (command.Intent != DeviceCommandIntent.StartMassage || string.IsNullOrWhiteSpace(_lightEntity)) return;
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var light = (await _gateway.GetStatesAsync(cancellationToken)).FirstOrDefault(item =>
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string.Equals(item.EntityId, _lightEntity, StringComparison.OrdinalIgnoreCase));
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var offAt = _state.OffAt;
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if (light is null || !DeviceActionRunner.IsAvailable(light) ||
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!string.Equals(light.State, "on", StringComparison.OrdinalIgnoreCase) ||
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light.GetDoubleAttribute("brightness") is <= 0 ||
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(offAt is not null && (light.LastUpdated is null || light.LastUpdated <= offAt)))
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throw new InvalidOperationException("卧室灯光已关闭或状态未确认，不启动床垫按摩");
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}
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public void Accepted(DeviceCommand command, DateTimeOffset now)
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{
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if (command.Intent == DeviceCommandIntent.TurnRelaxationLightOff) _state.MarkOff(now);
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else if (command.Intent == DeviceCommandIntent.TurnRelaxationLightOn) _state.MarkOn();
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}
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}
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