namespace NHibernate.AdoNet.Util
{
    using System;
    using System.Runtime.CompilerServices;

    public class FormatStyle
    {
        public static readonly FormatStyle Basic = new FormatStyle("basic", new BasicFormatter());
        public static readonly FormatStyle Ddl = new FormatStyle("ddl", new DdlFormatter());
        public static readonly FormatStyle None = new FormatStyle("none", new NoFormatImpl());

        private FormatStyle(string name, IFormatter formatter)
        {
            this.Name = name;
            this.Formatter = formatter;
        }

        public bool Equals(FormatStyle other)
        {
            if (other == null)
            {
                return false;
            }
            return (object.ReferenceEquals(this, other) || object.Equals(other.Name, this.Name));
        }

        public override bool Equals(object obj)
        {
            return this.Equals(obj as FormatStyle);
        }

        public override int GetHashCode()
        {
            if (this.Name == null)
            {
                return 0;
            }
            return this.Name.GetHashCode();
        }

        public IFormatter Formatter { get; private set; }

        public string Name { get; private set; }

        private class NoFormatImpl : IFormatter
        {
            public string Format(string source)
            {
                return source;
            }
        }
    }
}