Demo/Data/Repository/GroupRepositoryImpl.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Posechaemost.Data.LocalData;
using Posechaemost.Data.LocalData.Entity;

namespace Posechaemost.Data.Repository
{
    public class GroupRepositoryImpl: IGroupRepository
    {

        public bool AddGroup(String name, String id)
        {
            GroupLocalEntity? groupLocal = GetAllGroups().FirstOrDefault();
            // GroupLocalEntity? group = new GroupLocalEntity();
            groupLocal.Name = name;
            groupLocal.Id = int.Parse(id);
            return true;
        }

        public List<GroupLocalEntity> GetAllGroup()
        {
            throw new NotImplementedException();
        }

        public List<GroupLocalEntity> GetAllGroups() => LocalStaticData.groups;

        public GroupLocalEntity GetGroupById(int groupID)
        {
            GroupLocalEntity groupLocal = GetAllGroups()
                    .Where(x => x.Id == groupID).FirstOrDefault();
            if (groupLocal == null) return null;
            return groupLocal;
        }

        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? AddGroup(String name, String id) //не работает 
        // {
        //     GroupLocalEntity? groupLocal = GetAllGroups()
        //         .Where(x => x.Id == groupID).FirstOrDefault();
        //     if (groupLocal == null) return false;

        //     return GetAllGroups().Remove(groupLocal);
        // }

        public bool UpdateGroupById(int groupID, String name)
        {
            GroupLocalEntity? groupLocal = GetAllGroups()
                    .Where(x => x.Id == groupID).FirstOrDefault();
            if (groupLocal == null) return false;
            groupLocal.Name = name;
            return true;
        }
    }
}
    // {
    //     public List<GroupLocalEntity> GetAllGroups() => LocalStaticData.groups;
    //     public GroupLocalEntity? UpdateGroup(String name) 
    //     {
    //         GroupLocalEntity? groupLocal = GetAllGroups()
    //                 .Where(x => x.Name == name).FirstOrDefault();
    //         if (groupLocal == null) return null;
    //         groupLocal.Name = name;
    //         return groupLocal;
    //     }

    //     public GroupLocalEntity? AddGroup(String name, String id)
    //     {
    //         GroupLocalEntity? groupLocal = GetAllGroups().FirstOrDefault();
    //         // GroupLocalEntity? group = new GroupLocalEntity(name, id);
    //         groupLocal.Name = name;
    //         groupLocal.Id = int.Parse(id);
    //         return groupLocal;
    //     }
    // }