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

using BFR.Helpers;

namespace BFR.Operations
{
    public class NumberOperationMode : OperationMode<NumberMode>
    {
        public bool IsPrepend => Index == NumberMode.Prepend;
        public bool IsAppend => Index == NumberMode.Append;
        public bool IsInsert => Index == NumberMode.Insert;
        public bool IsReplace => Index == NumberMode.Replace;

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

        public NumberOperationMode(NumberMode index, string name, string description) :
            base(index, name, description) { }

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

    public enum NumberMode
    {
        [OperationMode(nameof(Prepend), "Inserts the numbering before the file name.")]
        Prepend,
        [OperationMode(nameof(Append), "Inserts the numbering after the file name.")]
        Append,
        [OperationMode(nameof(Insert), "Inserts the numbering at the specified index.")]
        Insert,
        [OperationMode(nameof(Replace), "Replaces the given pattern with the numbering.")]
        Replace,
    }
}