qrcodeService/Infrastructure/Repositories/LinkRepository.cs

using Domain.AggregateModel.LinkAggregate;
using Domain.SeedWork;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Infrastructure.Repositories
{
    public class LinkRepository : ILinkRepository
    {
        private AppDbContext dbContext;

        public LinkRepository(AppDbContext dbContext)
        {
            this.dbContext = dbContext;
        }

        public IUnitOfWork UnitOfWork => dbContext;

        public Link Add(Link link)
        {
            if (link.IsTransient())
            {
                return dbContext.Links.Add(link).Entity;
            }
            else
            {
                return link;
            }
        }

        public async Task<Link> GetAsync(string shortCode)
        {
            var link = await dbContext.Links
                .Where(l => l.ShortCode==shortCode)
                .SingleOrDefaultAsync();
            return link;
        }
    }
}