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

namespace HLWebOKBQueryPlugin.ViewModels
{
    public class ComparisonsHelper
    {
        private static  String ORDINAL_COMPARISONS_LESS = "<";
        private static  String ORDINAL_COMPARISONS_LESS_OR_EQUAL = "<=";
        private static  String ORDINAL_COMPARISONS_EQUAL = "=";
        private static  String ORDINAL_COMPARISONS_GREATER_OR_EQUAL = ">=";
        private static  String ORDINAL_COMPARISONS_GREATER = ">";
        private static  String ORDINAL_COMPARISONS_NOT_EQUAL = "<>";

        private static String STRING_COMPARISONS_EQUAL = "=";
        private static String STRING_COMPARISONS_NOT_EQUAL = "<>";
        private static String STRING_COMPARISONS_CONTAINS = "contains";
        private static String STRING_COMPARISONS_NOT_CONTAINS = "not contains";
        private static String STRING_COMPARISONS_LIKE = "like";
        private static String STRING_COMPARISONS_NOT_LIKE = "not like";

        public static List<ComparisonItem> ordinalComparisons = new List<ComparisonItem>() 
        { new ComparisonItem((int)OKBQueryService.OrdinalComparison.Less, ORDINAL_COMPARISONS_LESS),
          new ComparisonItem((int)OKBQueryService.OrdinalComparison.LessOrEqual, ORDINAL_COMPARISONS_LESS_OR_EQUAL),
          new ComparisonItem((int)OKBQueryService.OrdinalComparison.Equal, ORDINAL_COMPARISONS_EQUAL),
          new ComparisonItem((int)OKBQueryService.OrdinalComparison.GreaterOrEqual, ORDINAL_COMPARISONS_GREATER_OR_EQUAL),
          new ComparisonItem((int)OKBQueryService.OrdinalComparison.Greater, ORDINAL_COMPARISONS_GREATER),
          new ComparisonItem((int)OKBQueryService.OrdinalComparison.NotEqual, ORDINAL_COMPARISONS_NOT_EQUAL)
        };
        public static List<ComparisonItem> stringComparisons = new List<ComparisonItem>() {
           new ComparisonItem((int)OKBQueryService.StringComparison.Equal, STRING_COMPARISONS_EQUAL),
           new ComparisonItem((int)OKBQueryService.StringComparison.NotLike, STRING_COMPARISONS_NOT_EQUAL),
           new ComparisonItem((int)OKBQueryService.StringComparison.Contains, STRING_COMPARISONS_CONTAINS),
           new ComparisonItem((int)OKBQueryService.StringComparison.NotContains, STRING_COMPARISONS_NOT_CONTAINS),
           new ComparisonItem((int)OKBQueryService.StringComparison.Like, STRING_COMPARISONS_LIKE),
           new ComparisonItem((int)OKBQueryService.StringComparison.NotLike, STRING_COMPARISONS_NOT_LIKE)
         };


        public static OKBQueryService.StringComparison GetStringComparisonForValue(string comparisonValue)
        {
            int v = Int32.Parse(comparisonValue);

            switch (v)
            {
                case (int)OKBQueryService.StringComparison.Equal:
                    return OKBQueryService.StringComparison.Equal;
                case (int)OKBQueryService.StringComparison.Contains:
                    return OKBQueryService.StringComparison.Contains;
                case (int)OKBQueryService.StringComparison.Like:
                    return OKBQueryService.StringComparison.Like;
                case (int)OKBQueryService.StringComparison.NotContains:
                    return OKBQueryService.StringComparison.NotContains;
                case (int)OKBQueryService.StringComparison.NotEqual:
                    return OKBQueryService.StringComparison.NotEqual;
                case (int)OKBQueryService.StringComparison.NotLike:
                    return OKBQueryService.StringComparison.NotLike;
                default:
                    return OKBQueryService.StringComparison.Equal; //TODO 
            }
        }
    }
}