// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
namespace Roslyn.LanguageServer.Protocol;
 
using System;
using Roslyn.Text.Adornments;
using System.Text.Json.Serialization;
 
/// <summary>
/// Extension class for <see cref="Protocol.Location"/>.  Used to relay reference text information with colorization.
/// </summary>
internal sealed class VSInternalLocation : VSLocation
{
    private object? textValue = null;
 
    /// <summary>
    /// Gets or sets the text value for a location reference. Must be of type <see cref="ImageElement"/> or <see cref="ContainerElement"/> or <see cref="ClassifiedTextElement"/> or <see cref="string"/>.
    /// </summary>
    [JsonPropertyName("_vs_text")]
    [JsonConverter(typeof(ObjectContentConverter))]
    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
    public object? Text
    {
        get
        {
            return this.textValue;
        }
 
        set
        {
            if (value is ImageElement or ContainerElement or ClassifiedTextElement or string)
            {
                this.textValue = value;
            }
            else
            {
                throw new InvalidOperationException($"{value?.GetType()} is an invalid type.");
            }
        }
    }
}