using System;
using System.Linq;
using System.Collections.Generic;

using BFR.Helpers;

namespace BFR.Operations
{
    public class AddOperationMode : OperationMode<AddMode>
    {
        public bool IsPrepend => Index == AddMode.Prepend;
        public bool IsAppend => Index == AddMode.Append;
        public bool IsInsert => Index == AddMode.Insert;

        public readonly static AddOperationMode[] Modes = All();

        public AddOperationMode(AddMode index, string name, string description) :
            base(index, name, description) { }

        protected static AddOperationMode[] All() => ((IEnumerable<AddMode>)Enum.GetValues(typeof(AddMode))).Select(x =>
            new AddOperationMode(
                x,
                x.GetAttribute<OperationModeAttribute>().DisplayName,
                x.GetAttribute<OperationModeAttribute>().Description
            )).ToArray();
    }

    public enum AddMode
    {
        [OperationMode(nameof(Prepend), "Inserts before the file name.")]
        Prepend,
        [OperationMode(nameof(Append), "Inserts after the file name.")]
        Append,
        [OperationMode(nameof(Insert), "Inserts at the specified index.")]
        Insert
    }
}