McpIntegerParameterAttribute.cs

using System;
using System.Collections.Generic;
using Waher.Script;
 
namespace Waher.Networking.HTTP.Mcp.Model.Attributes
{
    [AttributeUsage(AttributeTargets.Parameter | AttributeTargets.ReturnValue | 
        AttributeTargets.Property | AttributeTargets.Field, 
        Inherited = true, AllowMultiple = false)]
    public class McpIntegerParameterAttribute : McpRangeParameterAttribute
    {
        public McpIntegerParameterAttribute(string? Title, string? Description)
            : base(Title, Description)
        {
        }
 
        public McpIntegerParameterAttribute(string? Title, string? Description,
            object? MinValue, object? MaxValue)
            : base(Title, Description, MinValue, MaxValue)
        {
            if (!IsIntegerType(MinValue))
                throw new ArgumentException("MinValue is not an integer type.", nameof(MinValue));
 
            if (!IsIntegerType(MaxValue))
                throw new ArgumentException("MaxValue is not an integer type.", nameof(MaxValue));
        }
 
        private static bool IsIntegerType(object? Value)
        {
            if (Value is null)
                return true;
 
            switch (Type.GetTypeCode(Value.GetType()))
            {
                case TypeCode.SByte:
                case TypeCode.Byte:
                case TypeCode.Int16:
                case TypeCode.UInt16:
                case TypeCode.Int32:
                case TypeCode.UInt32:
                case TypeCode.Int64:
                case TypeCode.UInt64:
                    return true;
 
                default:
                    return false;
            }
        }
 
        public override void Annotate(Dictionary<string, object?> Schema)
        {
            base.Annotate(Schema);
 
            Schema["type"] = "integer";
        }
 
        public override void GetHtmlInputAttributes(Dictionary<string, string> Attributes)
        {
            base.GetHtmlInputAttributes(Attributes);
 
            if (this.MinValue is null || this.MaxValue is null)
                Attributes["type"] = "number";
            else
                Attributes["type"] = "range";
 
            Attributes["step"] = "1";
        }
 
        public override string GetHtmlAttributeValue(object Value)
        {
            return Expression.ToExpressionString(Value);
        }
    }
}