using Eremite.Model;
using System.Collections.Generic;
using System.Linq;

namespace HLive
{
    public static class IdentifiableExtensions
    {
        public static T GetById<T>(this IList<T> list, int id) where T : IIdentifiable
        {
            int count = list.Count;
            for (int i = 0; i < count; i++)
                if (list[i].Id == id)
                    return list[i];

            return default;
        }

        public static bool ContainsId<T>(this IList<T> list, int id) where T : IIdentifiable
        {
            int count = list.Count;
            for (int i = 0; i < count; i++)
                if (list[i].Id == id)
                    return true;

            return false;
        }

        public static bool ContainsDuplicates<T>(this IList<T> list) where T : IIdentifiable
        {
            return list.GroupBy(x => x.Id).Any(g => g.Count() > 1);
        }

        public static IEnumerable<IGrouping<int, T>> GetDuplicates<T>(this IList<T> list) where T : IIdentifiable
        {
            return list.GroupBy(x => x.Id).Where(g => g.Count() > 1);
        }
    }

    public static class IdentifiableStateExtensions
    {
        public static T GetByUniqueId<T>(this IList<T> list, int uniqueId) where T : IIdentifiableState
        {
            int count = list.Count;
            for (int i = 0; i < count; i++)
                if (list[i].UniqueId == uniqueId)
                    return list[i];

            return default;
        }

        public static bool ContainsUniqueId<T>(this IList<T> list, int uniqueId) where T : IIdentifiableState
        {
            int count = list.Count;
            for (int i = 0; i < count; i++)
                if (list[i].UniqueId == uniqueId)
                    return true;

            return false;
        }

        public static void RemoveByUniqueId<T>(this IList<T> list, int uniqueId) where T : IIdentifiableState
        {
            int count = list.Count;
            for (int i = 0; i < count; i++)
                if (list[i].UniqueId == uniqueId)
                     list.RemoveAt(i);
        }

        public static T GetByModelId<T>(this IList<T> list, int modelId) where T : IIdentifiableState
        {
            int count = list.Count;
            for (int i = 0; i < count; i++)
                if (list[i].ModelId == modelId)
                    return list[i];

            return default;
        }

        public static bool ContainsModelId<T>(this IList<T> list, int modelId) where T : IIdentifiableState
        {
            int count = list.Count;
            for (int i = 0; i < count; i++)
                if (list[i].ModelId == modelId)
                    return true;

            return false;
        }

        public static void RemoveByModelId<T>(this IList<T> list, int modelId) where T : IIdentifiableState
        {
            int count = list.Count;
            for (int i = 0; i < count; i++)
                if (list[i].ModelId == modelId)
                    list.RemoveAt(i);
        }
    }
}