Demo/Data/Repository/GroupRepositoryImpl.cs

using Demo.Domain.Models;
using Demo.Data.LocalData;

namespace Demo.Data.Repository
{
    public class GroupRepositoryImpl : IGroupRepository
    {
        public GroupRepositoryImpl() {

            GetAllGroups = LocalStaticData.groups;
        }
        public List<GroupLocalEntity> GetAllGroups
        { get; set; }

        public List<GroupLocalEntity> GetAllGroup()
        {
            return GetAllGroups;
        }

        public GroupLocalEntity? CreateGroup(GroupLocalEntity groupCreateLocalEntity) {
            
            if (GetAllGroups.Any(x => x.ID == groupCreateLocalEntity.ID)) return null;

            GetAllGroups.Add(groupCreateLocalEntity);
            return groupCreateLocalEntity;
        }

        public GroupLocalEntity? UpdateGroup(GroupLocalEntity updatedGroup)
        {
            int index = GetAllGroups.FindIndex(x => x.ID == updatedGroup.ID);
            if (index == -1) return null;
            GetAllGroups[index].Name = updatedGroup.Name;
            Console.WriteLine($"Обновленный Name: {GetAllGroups[index].Name}");
            return GetAllGroups[index];
        }

        public bool RemoveGroupById(int groupId)
        {
            GroupLocalEntity? groupLocal = GetAllGroups
                .Where(x => x.ID == groupId).FirstOrDefault();
            if (groupLocal == null) return false;

            return GetAllGroups.Remove(groupLocal);
        }

        public GroupLocalEntity? GetGroupById(int groupId)
        {
            GroupLocalEntity? grouplocal = LocalStaticData.groups.Where(x => x.ID == groupId).FirstOrDefault();
            if (grouplocal == null) return null;

            return grouplocal;
        }
    }
}