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

namespace Weee.DAL
{
    public abstract class ParameterBuilder
    {
        protected List<MultiName> CunstructMultiNames(List<string> TwNames, List<string> CNNames, List<string> ENNames)
        {
            var result = new List<MultiName>() { };
            if (TwNames == null && CNNames == null && ENNames == null) return result;
            if (TwNames == null) TwNames = new List<string>();
            if (CNNames == null) CNNames = new List<string>();
            if (ENNames == null) ENNames = new List<string>();

            var max = TwNames.Count() > CNNames.Count() ?
                TwNames.Count() :
                CNNames.Count();
            max = max > ENNames.Count() ?
                max :
                ENNames.Count();

            for (int i = 0; i < max; i++)
            {
                var defaultname = TwNames.Count() > i ?
                    TwNames[i] :
                    null;
                defaultname = defaultname ??
                    (CNNames.Count() > i ?
                    CNNames[i] :
                    null);
                defaultname = defaultname ??
                    (ENNames.Count() > i ?
                    ENNames[i] :
                    null);
                result.Add(new MultiName()
                {
                    TWName = TwNames.Count() > i ? TwNames[i] : defaultname,
                    CNName = CNNames.Count() > i ? CNNames[i] : defaultname,
                    ENName = ENNames.Count() > i ? ENNames[i] : defaultname
                });
            }

            return result;
        }
        protected struct MultiName
        {
            public string TWName;
            public string CNName;
            public string ENName;
        }
    }
}