// Copyright 2005-2015 Giacomo Stelluti Scala & Contributors. All rights reserved. See License.md in the project root for license information.

using System;

using System.Collections.Generic;

namespace CommandLine

{

/// <summary>

/// Models a verb command specification.

/// </summary>

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct, AllowMultiple = false, Inherited = true)]

//public sealed class VerbAttribute : Attribute

public class VerbAttribute : Attribute

{

private readonly Infrastructure.LocalizableAttributeProperty helpText;

private Type resourceType;

/// <summary>

/// Initializes a new instance of the <see cref="CommandLine.VerbAttribute"/> class.

/// </summary>

/// <param name="name">The long name of the verb command.</param>

/// <param name="isDefault">Whether the verb is the default verb.</param>

/// <param name="aliases">aliases for this verb. i.e. "move" and "mv"</param>

/// <exception cref="System.ArgumentException">Thrown if <paramref name="name"/> is null, empty or whitespace and <paramref name="isDefault"/> is false.</exception>

public VerbAttribute(string name, bool isDefault = false, string[] aliases = null)

{

if (string.IsNullOrWhiteSpace(name)) throw new ArgumentException("name");

Name = name;

IsDefault = isDefault;

helpText = new Infrastructure.LocalizableAttributeProperty(nameof(HelpText));

resourceType = null;

Aliases = aliases ?? new string[0];

}

/// <summary>

/// Gets the verb name.

/// </summary>

public string Name { get; private set; }

/// <summary>

/// Gets or sets a value indicating whether a command line verb is visible in the help text.

/// </summary>

public bool Hidden

{

get;

set;

}

/// <summary>

/// Gets or sets a short description of this command line option. Usually a sentence summary.

/// </summary>

public string HelpText

{

get => helpText.Value ?? string.Empty;

set => helpText.Value = value ?? throw new ArgumentNullException("value");

}

/// <summary>

/// Gets or sets the <see cref="System.Type"/> that contains the resources for <see cref="HelpText"/>.

/// </summary>

public Type ResourceType

{

get => resourceType;

set => resourceType = helpText.ResourceType = value;

}

/// <summary>

/// Gets whether this verb is the default verb.

/// </summary>

public bool IsDefault { get; private set; }

/// <summary>

/// Gets or sets the aliases

/// </summary>

public string[] Aliases { get; private set; }

}

}