using System;
using System.Collections.Generic;
using System.Text;

namespace sharpcomparer
{
    public class ProcedureComparison : Comparison<Procedure>
    {
        public string Name
        {
            get
            {
                return LeftItem != null ? LeftItem.RoutineName : RightItem.RoutineName;
            }
        }

        public string Owner
        {
            get
            {
                return LeftItem != null ? LeftItem.RoutineSchema : RightItem.RoutineSchema;
            }
        }

        public string Type
        {
            get
            {
                return LeftItem != null ? LeftItem.RoutineType : RightItem.RoutineType;
            }
        }

        public ProcedureComparison(Procedure leftItem, Procedure rightItem, Comparison<Procedure>.ComparisonDifference difference)
            : base(leftItem, rightItem, difference)
        {
        }

        public static List<ProcedureComparison> Compare(List<Procedure> left, List<Procedure> right)
        {
            List<ProcedureComparison> comparison = new List<ProcedureComparison>();
            foreach (Procedure item in left)
            {
                Procedure result = right.Find(
                    delegate(Procedure find)
                    {
                        return find.RoutineName == item.RoutineName;
                    }
                );
                if (result != null)
                {
                    if (item != result)
                    {
                        comparison.Add(new ProcedureComparison(item, result, ComparisonDifference.Different));
                    }
                    else
                    {
                        comparison.Add(new ProcedureComparison(item, result, ComparisonDifference.None));
                    }
                }
                else
                {
                    comparison.Add(new ProcedureComparison(item, null, ComparisonDifference.LeftOnly));
                }
            }
            foreach (Procedure item in right)
            {
                Procedure result = left.Find(
                    delegate(Procedure find)
                    {
                        return find.RoutineName == item.RoutineName;
                    }
                );
                if (result == null)
                {
                    comparison.Add(new ProcedureComparison(null, item, ComparisonDifference.RightOnly));
                }
            }
            return comparison;
        }
    }
}