using System;
using System.Configuration;
using AspClassic.Scripting.Runtime;

namespace AspClassic.Scripting.Hosting.Configuration;

public class OptionElement : ConfigurationElement
{
	internal sealed class Key : IEquatable<Key>
	{
		private readonly string _option;

		private readonly string _language;

		public string Option => _option;

		public string Language => _language;

		public Key(string option, string language)
		{
			_option = option;
			_language = language;
		}

		public override bool Equals(object obj)
		{
			return Equals(obj as Key);
		}

		public bool Equals(Key other)
		{
			if (other != null && DlrConfiguration.OptionNameComparer.Equals(_option, other._option))
			{
				return DlrConfiguration.LanguageNameComparer.Equals(_language, other._language);
			}
			return false;
		}

		public override int GetHashCode()
		{
			return _option.GetHashCode() ^ (_language ?? string.Empty).GetHashCode();
		}

		public override string ToString()
		{
			return (string.IsNullOrEmpty(_language) ? string.Empty : (_language + ":")) + _option;
		}
	}

	private const string _Option = "option";

	private const string _Value = "value";

	private const string _Language = "language";

	private static ConfigurationPropertyCollection _Properties = new ConfigurationPropertyCollection
	{
		new ConfigurationProperty("option", typeof(string), string.Empty, ConfigurationPropertyOptions.IsRequired | ConfigurationPropertyOptions.IsKey),
		new ConfigurationProperty("value", typeof(string), string.Empty, ConfigurationPropertyOptions.IsRequired),
		new ConfigurationProperty("language", typeof(string), string.Empty, ConfigurationPropertyOptions.IsKey)
	};

    protected override ConfigurationPropertyCollection Properties => _Properties;

    public string Name
	{
		get
		{
			return (string)base["option"];
		}
		set
		{
			base["option"] = value;
		}
	}

	public string Value
	{
		get
		{
			return (string)base["value"];
		}
		set
		{
			base["value"] = value;
		}
	}

	public string Language
	{
		get
		{
			return (string)base["language"];
		}
		set
		{
			base["language"] = value;
		}
	}

	internal object GetKey()
	{
		return new Key(Name, Language);
	}
}