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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Collections;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using Microsoft.Extensions.Logging;
namespace Aspire.Hosting;
#pragma warning disable ASPIREINTERACTION001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
/// <summary>
/// A service to interact with the current development environment.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public interface IInteractionService
{
/// <summary>
/// Gets a value indicating whether the interaction service is available. If <c>false</c>,
/// this service is not available to interact with the user and service methods will throw
/// an exception.
/// </summary>
bool IsAvailable { get; }
/// <summary>
/// Prompts the user for confirmation with a dialog.
/// </summary>
/// <param name="title">The title of the dialog.</param>
/// <param name="message">The message to display in the dialog.</param>
/// <param name="options">Optional configuration for the message box interaction.</param>
/// <param name="cancellationToken">A token to cancel the operation.</param>
/// <returns>
/// An <see cref="InteractionResult{T}"/> containing <c>true</c> if the user confirmed, <c>false</c> otherwise.
/// </returns>
Task<InteractionResult<bool>> PromptConfirmationAsync(string title, string message, MessageBoxInteractionOptions? options = null, CancellationToken cancellationToken = default);
/// <summary>
/// Prompts the user with a message box dialog.
/// </summary>
/// <param name="title">The title of the message box.</param>
/// <param name="message">The message to display in the message box.</param>
/// <param name="options">Optional configuration for the message box interaction.</param>
/// <param name="cancellationToken">A token to cancel the operation.</param>
/// <returns>
/// An <see cref="InteractionResult{T}"/> containing <c>true</c> if the user accepted, <c>false</c> otherwise.
/// </returns>
Task<InteractionResult<bool>> PromptMessageBoxAsync(string title, string message, MessageBoxInteractionOptions? options = null, CancellationToken cancellationToken = default);
/// <summary>
/// Prompts the user for a single text input.
/// </summary>
/// <param name="title">The title of the input dialog.</param>
/// <param name="message">The message to display in the dialog.</param>
/// <param name="inputLabel">The label for the input field.</param>
/// <param name="placeHolder">The placeholder text for the input field.</param>
/// <param name="options">Optional configuration for the input dialog interaction.</param>
/// <param name="cancellationToken">A token to cancel the operation.</param>
/// <returns>
/// An <see cref="InteractionResult{T}"/> containing the user's input.
/// </returns>
Task<InteractionResult<InteractionInput>> PromptInputAsync(string title, string? message, string inputLabel, string placeHolder, InputsDialogInteractionOptions? options = null, CancellationToken cancellationToken = default);
/// <summary>
/// Prompts the user for a single input using a specified <see cref="InteractionInput"/>.
/// </summary>
/// <param name="title">The title of the input dialog.</param>
/// <param name="message">The message to display in the dialog.</param>
/// <param name="input">The input configuration.</param>
/// <param name="options">Optional configuration for the input dialog interaction.</param>
/// <param name="cancellationToken">A token to cancel the operation.</param>
/// <returns>
/// An <see cref="InteractionResult{T}"/> containing the user's input.
/// </returns>
Task<InteractionResult<InteractionInput>> PromptInputAsync(string title, string? message, InteractionInput input, InputsDialogInteractionOptions? options = null, CancellationToken cancellationToken = default);
/// <summary>
/// Prompts the user for multiple inputs.
/// </summary>
/// <param name="title">The title of the input dialog.</param>
/// <param name="message">The message to display in the dialog.</param>
/// <param name="inputs">A collection of <see cref="InteractionInput"/> to prompt for.</param>
/// <param name="options">Optional configuration for the input dialog interaction.</param>
/// <param name="cancellationToken">A token to cancel the operation.</param>
/// <returns>
/// An <see cref="InteractionResult{T}"/> containing the user's inputs as an <see cref="InteractionInputCollection"/>.
/// </returns>
Task<InteractionResult<InteractionInputCollection>> PromptInputsAsync(string title, string? message, IReadOnlyList<InteractionInput> inputs, InputsDialogInteractionOptions? options = null, CancellationToken cancellationToken = default);
/// <summary>
/// Prompts the user with a notification.
/// </summary>
/// <param name="title">The title of the notification.</param>
/// <param name="message">The message to display in the notification.</param>
/// <param name="options">Optional configuration for the notification interaction.</param>
/// <param name="cancellationToken">A token to cancel the operation.</param>
/// <returns>
/// An <see cref="InteractionResult{T}"/> containing <c>true</c> if the user accepted, <c>false</c> otherwise.
/// </returns>
Task<InteractionResult<bool>> PromptNotificationAsync(string title, string message, NotificationInteractionOptions? options = null, CancellationToken cancellationToken = default);
}
internal record QueueLoadOptions(
ILogger Logger,
CancellationToken CancellationToken,
InteractionInput Input,
InteractionInputCollection AllInputs,
IServiceProvider ServiceProvider);
internal sealed class InputLoadingState(InputLoadOptions options)
{
private readonly InputLoadOptions _options = options;
private readonly object _lock = new object();
private Task? _currentTask;
private CancellationTokenSource? _currentCts;
private bool _isNextQueued;
public bool Loading { get; private set; }
public Action<InteractionInput>? OnLoadComplete { get; init; }
public void QueueLoad(QueueLoadOptions options)
{
lock (_lock)
{
// Already queued but not yet started — ignore new call
if (_isNextQueued)
{
return;
}
if (_currentTask == null || _currentTask.IsCompleted)
{
StartNewTask(options);
return;
}
// A task is running — cancel and queue restart
_currentCts?.Cancel();
_isNextQueued = true;
// Queue continuation once current completes
_currentTask.ContinueWith(_ =>
{
lock (_lock)
{
if (_isNextQueued)
{
_isNextQueued = false;
StartNewTask(options);
}
}
}, TaskScheduler.Default);
}
}
private void StartNewTask(QueueLoadOptions options)
{
Debug.Assert(Monitor.IsEntered(_lock));
Loading = true;
_currentCts = CancellationTokenSource.CreateLinkedTokenSource(options.CancellationToken);
var currentToken = _currentCts.Token;
_currentTask = Task.Run(async () =>
{
try
{
await _options.LoadCallback(new LoadInputContext
{
AllInputs = options.AllInputs,
Input = options.Input,
ServiceProvider = options.ServiceProvider,
CancellationToken = currentToken
}).ConfigureAwait(false);
lock (_lock)
{
Loading = false;
}
OnLoadComplete?.Invoke(options.Input);
}
catch (OperationCanceledException)
{
// Ignore.
}
catch (Exception ex)
{
options.Logger.LogError(ex, "Error loading options for input '{InputName}'.", options.Input.Name);
}
}, currentToken);
}
}
/// <summary>
/// Represents configuration options for dynamically loading input data.
/// </summary>
/// <remarks>
/// Use this class to specify how and when dynamic input data should be loaded. This type is intended for advanced
/// scenarios where input loading behavior must be customized.
/// </remarks>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public sealed class InputLoadOptions
{
/// <summary>
/// Gets the callback function that is invoked to perform a load operation using the specified input context.
/// </summary>
public required Func<LoadInputContext, Task> LoadCallback { get; init; }
/// <summary>
/// Gets a value indicating whether <see cref="LoadCallback"/> should always be executed at the start of the input prompt.
/// </summary>
/// <remarks>
/// <see cref="LoadCallback"/> is executed at the start of the input prompt except when it depends on other inputs with <see cref="DependsOnInputs"/>.
/// Setting this to <c>true</c> forces the load to always occur at the start of the prompt, regardless of dependencies.
/// </remarks>
public bool AlwaysLoadOnStart { get; init; }
/// <summary>
/// Gets the list of input names that this input depends on. <see cref="LoadCallback"/> is executed
/// whenever any of the specified inputs change.
/// </summary>
public IReadOnlyList<string>? DependsOnInputs { get; init; }
}
/// <summary>
/// The context for dynamic input loading. Used with <see cref="InputLoadOptions.LoadCallback"/>.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public sealed class LoadInputContext
{
/// <summary>
/// Gets the loading input. This is the target of <see cref="InputLoadOptions"/>.
/// </summary>
public required InteractionInput Input { get; init; }
/// <summary>
/// Gets the collection of all <see cref="InteractionInput"/> in this prompt.
/// </summary>
public required InteractionInputCollection AllInputs { get; init; }
/// <summary>
/// Gets the service provider.
/// </summary>
public required IServiceProvider ServiceProvider { get; init; }
/// <summary>
/// Gets the <see cref="CancellationToken"/>.
/// </summary>
public required CancellationToken CancellationToken { get; init; }
}
/// <summary>
/// Represents an input for an interaction.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
[DebuggerDisplay("Name = {Name}, InputType = {InputType}, Required = {Required}, Value = {Value}")]
public sealed class InteractionInput
{
internal string EffectiveLabel => string.IsNullOrWhiteSpace(Label) ? Name : Label;
internal InputLoadingState? DynamicLoadingState { get; set; }
internal List<string> ValidationErrors { get; } = [];
/// <summary>
/// Gets or sets the name for the input. Used for accessing inputs by name from a keyed collection.
/// </summary>
public required string Name { get; init; }
/// <summary>
/// Gets or sets the label for the input. If not specified, the name will be used as the label.
/// </summary>
public string? Label { get; init; }
/// <summary>
/// Gets or sets the description for the input.
/// </summary>
public string? Description { get; init; }
/// <summary>
/// Gets or sets a value indicating whether the description should be rendered as Markdown.
/// Setting this to <c>true</c> allows a description to contain Markdown elements such as links, text decoration and lists.
/// </summary>
public bool EnableDescriptionMarkdown { get; init; }
/// <summary>
/// Gets or sets the type of the input.
/// </summary>
public required InputType InputType { get; init; }
/// <summary>
/// Gets or sets a value indicating whether the input is required.
/// </summary>
public bool Required { get; init; }
/// <summary>
/// Gets or sets the options for the input. Only used by <see cref="InputType.Choice"/> inputs.
/// </summary>
public IReadOnlyList<KeyValuePair<string, string>>? Options { get; set; }
/// <summary>
/// Gets the <see cref="InputLoadOptions"/> for the input.
/// Dynamic loading is used to load data and update inputs after a prompt has started.
/// It can also be used to reload data and update inputs after a dependant input has changed.
/// </summary>
public InputLoadOptions? DynamicLoading { get; init; }
/// <summary>
/// Gets or sets the value of the input.
/// </summary>
public string? Value { get; set; }
/// <summary>
/// Gets the placeholder text for the input.
/// </summary>
public string? Placeholder { get; init; }
/// <summary>
/// Gets a value indicating whether a custom choice is allowed. Only used by <see cref="InputType.Choice"/> inputs.
/// </summary>
public bool AllowCustomChoice { get; init; }
/// <summary>
/// Gets or sets a value indicating whether a custom choice is allowed. Only used by <see cref="InputType.Choice"/> inputs.
/// </summary>
public bool Disabled { get; set; }
/// <summary>
/// gets or sets the maximum length for text inputs.
/// </summary>
public int? MaxLength
{
get => field;
init
{
if (value is { } v)
{
ArgumentOutOfRangeException.ThrowIfLessThanOrEqual(v, 0);
}
field = value;
}
}
}
/// <summary>
/// A collection of interaction inputs that supports both indexed and name-based access.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
[DebuggerDisplay("Count = {Count}")]
public sealed class InteractionInputCollection : IReadOnlyList<InteractionInput>
{
private readonly List<InteractionInput> _inputs;
private readonly Dictionary<string, InteractionInput> _inputsByName;
/// <summary>
/// Initializes a new instance of the <see cref="InteractionInputCollection"/> class.
/// </summary>
/// <param name="inputs">The collection of interaction inputs to wrap.</param>
public InteractionInputCollection(IReadOnlyList<InteractionInput> inputs)
{
var inputsByName = new Dictionary<string, InteractionInput>(StringComparers.InteractionInputName);
var usedNames = new HashSet<string>(StringComparers.InteractionInputName);
// Check for duplicate names
foreach (var input in inputs)
{
if (!usedNames.Add(input.Name))
{
throw new InvalidOperationException($"Duplicate input name '{input.Name}' found. Input names must be unique.");
}
inputsByName[input.Name] = input;
}
_inputs = inputs.ToList();
_inputsByName = inputsByName;
}
/// <summary>
/// Gets an input by its name.
/// </summary>
/// <param name="name">The name of the input.</param>
/// <returns>The input with the specified name.</returns>
/// <exception cref="KeyNotFoundException">Thrown when no input with the specified name exists.</exception>
public InteractionInput this[string name]
{
get
{
if (_inputsByName.TryGetValue(name, out var input))
{
return input;
}
throw new KeyNotFoundException($"No input with name '{name}' was found.");
}
}
/// <summary>
/// Gets an input by its index.
/// </summary>
/// <param name="index">The zero-based index of the input.</param>
/// <returns>The input at the specified index.</returns>
public InteractionInput this[int index] => _inputs[index];
/// <summary>
/// Gets the number of inputs in the collection.
/// </summary>
public int Count => _inputs.Count;
/// <summary>
/// Tries to get an input by its name.
/// </summary>
/// <param name="name">The name of the input.</param>
/// <param name="input">When this method returns, contains the input with the specified name, if found; otherwise, null.</param>
/// <returns>true if an input with the specified name was found; otherwise, false.</returns>
public bool TryGetByName(string name, [NotNullWhen(true)] out InteractionInput? input)
{
return _inputsByName.TryGetValue(name, out input);
}
/// <summary>
/// Determines whether the collection contains an input with the specified name.
/// </summary>
/// <param name="name">The name to locate in the collection.</param>
/// <returns>true if the collection contains an input with the specified name; otherwise, false.</returns>
public bool ContainsName(string name)
{
return _inputsByName.ContainsKey(name);
}
/// <summary>
/// Gets the names of all inputs in the collection.
/// </summary>
public IEnumerable<string> Names => _inputsByName.Keys;
/// <summary>
/// Returns an enumerator that iterates through the collection.
/// </summary>
/// <returns>An enumerator that can be used to iterate through the collection.</returns>
public IEnumerator<InteractionInput> GetEnumerator() => _inputs.GetEnumerator();
/// <summary>
/// Returns an enumerator that iterates through the collection.
/// </summary>
/// <returns>An enumerator that can be used to iterate through the collection.</returns>
IEnumerator IEnumerable.GetEnumerator() => _inputs.GetEnumerator();
internal int IndexOf(InteractionInput input) => _inputs.IndexOf(input);
}
/// <summary>
/// Specifies the type of input for an <see cref="InteractionInput"/>.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public enum InputType
{
/// <summary>
/// A single-line text input.
/// </summary>
Text,
/// <summary>
/// A secure text input.
/// </summary>
SecretText,
/// <summary>
/// A choice input. Selects from a list of options.
/// </summary>
Choice,
/// <summary>
/// A boolean input.
/// </summary>
Boolean,
/// <summary>
/// A numeric input.
/// </summary>
Number
}
/// <summary>
/// Options for configuring an inputs dialog interaction.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public class InputsDialogInteractionOptions : InteractionOptions
{
internal static new InputsDialogInteractionOptions Default { get; } = new();
/// <summary>
/// Gets or sets the validation callback for the inputs dialog. This callback is invoked when the user submits the dialog.
/// If validation errors are added to the <see cref="InputsDialogValidationContext"/>, the dialog will not close and the user will be prompted to correct the errors.
/// </summary>
public Func<InputsDialogValidationContext, Task>? ValidationCallback { get; set; }
}
/// <summary>
/// Represents the context for validating inputs in an inputs dialog interaction.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public sealed class InputsDialogValidationContext
{
internal bool HasErrors { get; private set; }
/// <summary>
/// Gets the inputs that are being validated.
/// </summary>
public required InteractionInputCollection Inputs { get; init; }
/// <summary>
/// Gets the cancellation token for the validation operation.
/// </summary>
public required CancellationToken CancellationToken { get; init; }
/// <summary>
/// Gets the service provider for resolving services during validation.
/// </summary>
public required IServiceProvider ServiceProvider { get; init; }
/// <summary>
/// Adds a validation error for the specified input.
/// </summary>
/// <param name="input">The input to add a validation error for.</param>
/// <param name="errorMessage">The error message to add.</param>
public void AddValidationError(InteractionInput input, string errorMessage)
{
ArgumentNullException.ThrowIfNull(input, nameof(input));
if (string.IsNullOrEmpty(errorMessage))
{
throw new ArgumentException("Error message cannot be null or empty.", nameof(errorMessage));
}
input.ValidationErrors.Add(errorMessage);
HasErrors = true;
}
}
/// <summary>
/// Options for configuring a message box interaction.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public class MessageBoxInteractionOptions : InteractionOptions
{
internal static MessageBoxInteractionOptions CreateDefault() => new();
/// <summary>
/// Gets or sets the intent of the message box.
/// </summary>
public MessageIntent? Intent { get; set; }
}
/// <summary>
/// Options for configuring a notification interaction.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public class NotificationInteractionOptions : InteractionOptions
{
internal static NotificationInteractionOptions CreateDefault() => new();
/// <summary>
/// Gets or sets the intent of the notification.
/// </summary>
public MessageIntent? Intent { get; set; }
/// <summary>
/// Gets or sets the text for a link in the notification.
/// </summary>
public string? LinkText { get; set; }
/// <summary>
/// Gets or sets the URL for the link in the notification.
/// </summary>
public string? LinkUrl { get; set; }
}
/// <summary>
/// Specifies the intent or purpose of a message in an interaction.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public enum MessageIntent
{
/// <summary>
/// No specific intent.
/// </summary>
None = 0,
/// <summary>
/// Indicates a successful operation.
/// </summary>
Success = 1,
/// <summary>
/// Indicates a warning.
/// </summary>
Warning = 2,
/// <summary>
/// Indicates an error.
/// </summary>
Error = 3,
/// <summary>
/// Provides informational content.
/// </summary>
Information = 4,
/// <summary>
/// Requests confirmation from the user.
/// </summary>
Confirmation = 5
}
/// <summary>
/// Optional configuration for interactions added with <see cref="InteractionService"/>.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public class InteractionOptions
{
internal static InteractionOptions Default { get; } = new();
/// <summary>
/// Optional primary button text to override the default text.
/// </summary>
public string? PrimaryButtonText { get; set; }
/// <summary>
/// Optional secondary button text to override the default text.
/// </summary>
public string? SecondaryButtonText { get; set; }
/// <summary>
/// Gets or sets a value indicating whether show the secondary button.
/// </summary>
public bool? ShowSecondaryButton { get; set; }
/// <summary>
/// Gets or sets a value indicating whether show the dismiss button.
/// </summary>
public bool? ShowDismiss { get; set; }
/// <summary>
/// Gets or sets a value indicating whether Markdown in the message is rendered.
/// Setting this to <c>true</c> allows a message to contain Markdown elements such as links, text decoration and lists.
/// </summary>
public bool? EnableMessageMarkdown { get; set; }
}
/// <summary>
/// Provides a set of static methods for the <see cref="InteractionResult{T}"/>.
/// </summary>
public static class InteractionResult
{
/// <summary>
/// Creates a new <see cref="InteractionResult{T}"/> with the specified result and a flag indicating that the interaction was not canceled.
/// </summary>
/// <typeparam name="T">The type of the data associated with the interaction result.</typeparam>
/// <param name="result">The data returned from the interaction.</param>
/// <returns>The new <see cref="InteractionResult{T}"/>.</returns>
public static InteractionResult<T> Ok<T>(T result)
{
return new InteractionResult<T>(result, canceled: false);
}
/// <summary>
/// Creates an <see cref="InteractionResult{T}"/> indicating a canceled interaction.
/// </summary>
/// <typeparam name="T">The type of the data associated with the interaction result.</typeparam>
/// <param name="data">Optional data to include with the interaction result. Defaults to the default value of type <typeparamref
/// name="T"/> if not provided.</param>
/// <returns>
/// An <see cref="InteractionResult{T}"/> with the <c>canceled</c> flag set to <see langword="true"/> and containing
/// the specified data.
/// </returns>
public static InteractionResult<T> Cancel<T>(T? data = default)
{
return new InteractionResult<T>(data ?? default, canceled: true);
}
}
/// <summary>
/// Represents the result of an interaction.
/// </summary>
[Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
public class InteractionResult<T>
{
/// <summary>
/// The data returned from the interaction. Won't have a useful value if the interaction was canceled.
/// </summary>
public T? Data { get; }
/// <summary>
/// A flag indicating whether the interaction was canceled by the user.
/// </summary>
[MemberNotNullWhen(false, nameof(Data))]
public bool Canceled { get; }
internal InteractionResult(T? data, bool canceled)
{
Data = data;
Canceled = canceled;
}
}
#pragma warning restore ASPIREINTERACTION001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
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