using System;
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namespace Aging.Infrastructure.Contracts
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{
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/// <summary>
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/// 预约状态枚举
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/// </summary>
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public enum ReservationState
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{
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/// <summary>
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/// 活跃状态
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/// </summary>
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Active,
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/// <summary>
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/// 已释放
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/// </summary>
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Released,
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/// <summary>
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/// 冲突状态
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/// </summary>
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Conflicted
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}
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/// <summary>
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/// 长期预约实体，表示对某个硬件资源的持久占用。
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/// 预约期间，其他所有者无法获取该资源。
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/// </summary>
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public sealed class ResourceReservation
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{
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/// <summary>
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/// 预约唯一标识
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/// </summary>
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public string ReservationId { get; }
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/// <summary>
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/// 被预约的资源键
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/// </summary>
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public ResourceKey Resource { get; }
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/// <summary>
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/// 预约所有者令牌
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/// </summary>
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public ResourceOwnerToken Owner { get; }
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/// <summary>
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/// 预约状态
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/// </summary>
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public ReservationState State { get; set; }
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/// <summary>
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/// 预约创建时间
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/// </summary>
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public DateTime ReservedAt { get; }
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/// <summary>
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/// 预约描述（可选）
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/// </summary>
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public string? Description { get; set; }
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/// <summary>
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/// 初始化资源预约实例
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/// </summary>
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/// <param name="resource">资源键</param>
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/// <param name="owner">所有者令牌</param>
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/// <param name="description">预约描述（可选）</param>
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public ResourceReservation(ResourceKey resource, ResourceOwnerToken owner, string? description = null)
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{
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ReservationId = Guid.NewGuid().ToString();
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Resource = resource ?? throw new ArgumentNullException(nameof(resource));
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Owner = owner ?? throw new ArgumentNullException(nameof(owner));
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State = ReservationState.Active;
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ReservedAt = DateTime.UtcNow;
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Description = description;
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}
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}
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}
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