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87 lines
3.3 KiB
C#
87 lines
3.3 KiB
C#
using AIStudio.Chat;
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namespace AIStudio.Tools.AssistantSessions;
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/// <summary>
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/// Immutable-style view of an assistant session for UI consumers and message bus events.
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/// </summary>
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/// <remarks>
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/// The service creates snapshots by copying its internal runtime state. Consumers must
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/// treat the contained chat thread and state objects as read-only views of the session.
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/// </remarks>
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public sealed record AssistantSessionSnapshot
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{
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/// <summary>
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/// Identifies the concrete run represented by this snapshot.
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/// </summary>
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public required Guid SessionId { get; init; }
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/// <summary>
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/// Identifies the assistant and logical session slot represented by this snapshot.
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/// </summary>
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public required AssistantSessionKey Key { get; init; }
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/// <summary>
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/// Gets the user-visible assistant title.
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/// </summary>
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public required string Title { get; init; }
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/// <summary>
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/// Gets the current lifecycle status.
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/// </summary>
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public required AssistantSessionStatus Status { get; init; }
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/// <summary>
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/// Gets when the session run started.
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/// </summary>
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public required DateTimeOffset StartedAt { get; init; }
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/// <summary>
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/// Gets when the session was last changed.
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/// </summary>
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public required DateTimeOffset UpdatedAt { get; init; }
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/// <summary>
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/// Gets when the session reached a terminal state.
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/// </summary>
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public DateTimeOffset? FinishedAt { get; init; }
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/// <summary>
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/// Gets the user-visible error message for failed sessions.
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/// </summary>
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public string ErrorMessage { get; init; } = string.Empty;
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/// <summary>
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/// Gets the assistant chat thread captured for this session.
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/// </summary>
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public ChatThread? ChatThread { get; init; }
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/// <summary>
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/// Gets the assistant component state captured for this session.
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/// </summary>
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public IReadOnlyDictionary<string, IAssistantSessionSnapshotField> State { get; init; } = new Dictionary<string, IAssistantSessionSnapshotField>();
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/// <summary>
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/// Gets whether the session is still running or canceling.
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/// </summary>
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public bool IsActive => this.Status is AssistantSessionStatus.RUNNING or AssistantSessionStatus.CANCELING;
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/// <summary>
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/// Gets the state fields which are new or hold another value than in an earlier snapshot of the same run.
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/// </summary>
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/// <remarks>
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/// A component which shows a run it did not start takes over only these, so that whatever the
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/// running assistant left alone stays as the user has it in that component.
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/// </remarks>
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/// <param name="previous">The snapshot taken over last, or null for none.</param>
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/// <returns>The whole state when there is no earlier snapshot of the same run; otherwise, the new and changed fields.</returns>
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public IReadOnlyDictionary<string, IAssistantSessionSnapshotField> StateChangedSince(AssistantSessionSnapshot? previous)
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{
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if (previous is null || previous.SessionId != this.SessionId)
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return this.State;
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return this.State
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.Where(field => !previous.State.TryGetValue(field.Key, out var previousField) || !previousField.HasSameValueAs(field.Value))
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.ToDictionary(field => field.Key, field => field.Value, StringComparer.Ordinal);
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}
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} |