Demo/Data/Repository/GroupRepositoryImpl.cs

using Demo.Data.LocalData;
using Demo.domain.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Data.RemoteData.RemoteDataBase.DAO;
using Demo.Data.RemoteData.RemoteDataBase.DAO;

namespace Demo.Data.Repository
{
    public class SQLGroupRepositoryImpl : IGroupRepository
    {

        private readonly RemoteDatabaseContext _remoteDatabaseContext;

        public SQLGroupRepositoryImpl(RemoteDatabaseContext remoteDatabaseContext) {

            _remoteDatabaseContext = remoteDatabaseContext;
            GetAllGroups = _remoteDatabaseContext.Groups.Select(x => new GroupLocalEntity{Name = x.Name, Id = x.Id}).ToList();
        }
        public List<GroupLocalEntity> GetAllGroups
        { get; set; }

        public List<GroupLocalEntity> GetAllGroup()
        {
            return _remoteDatabaseContext.Groups.Select(x => new GroupLocalEntity{Name = x.Name, Id = x.Id}).ToList();
        }

        public GroupLocalEntity? UpdateGroupName(GroupLocalEntity groupUpdateLocalEntity) {

            var group = _remoteDatabaseContext.Groups.FirstOrDefault(x => x.Id == groupUpdateLocalEntity.Id);
            if (group == null){
                return null;
            }

            group.Name = groupUpdateLocalEntity.Name;
            _remoteDatabaseContext.SaveChanges();
            return new GroupLocalEntity{Name = group.Name, Id = group.Id};
        }

        public GroupLocalEntity? CreateGroup(string Name) {
            
            GroupDao groupDAO = new GroupDao{Name = Name};
            var result = _remoteDatabaseContext.Groups.Add(groupDAO);
            _remoteDatabaseContext.SaveChanges();
            return new GroupLocalEntity{Name = groupDAO.Name, Id = groupDAO.Id};
        }

        public bool RemoveGroupById(int groupID)
        {
            var groupDao = _remoteDatabaseContext.Groups.FirstOrDefault(x => x.Id == groupID);
            _remoteDatabaseContext.Groups.Remove(groupDao);
            _remoteDatabaseContext.SaveChanges();
            return true;
        }

        public GroupLocalEntity? GetGroupById(int groupId) {
            var groupDao = _remoteDatabaseContext.Groups.FirstOrDefault(x => x.Id == groupId);
            return new GroupLocalEntity{Name = groupDao.Name, Id = groupDao.Id};
        }
    }
}