EnvelopeGenerator/EnvelopeGenerator.Infrastructure/Repositories/ReceiverRepository.cs

using DigitalData.Core.Infrastructure;
using EnvelopeGenerator.Domain.Entities;
using EnvelopeGenerator.Infrastructure.Contracts;
using Microsoft.EntityFrameworkCore;

namespace EnvelopeGenerator.Infrastructure.Repositories
{
    public class ReceiverRepository : CRUDRepository<Receiver, int, EGDbContext>, IReceiverRepository
    {
        public ReceiverRepository(EGDbContext dbContext) : base(dbContext)
        {
        }

        protected IQueryable<Receiver> ReadBy(string? emailAddress = null, string? signature = null, bool withLastUsedName = true)
        {
            IQueryable<Receiver> query = _dbSet.AsNoTracking();

            if(emailAddress is not null)
                query = query.Where(r => r.EmailAddress == emailAddress);

            if(signature is not null)
                query = query.Where(r => r.Signature == signature);

            // envelope receivers are ignored (with '[JsonIgnore]' attribute). The reson to add them is to get the las used receiver name
            if (withLastUsedName)
            {
                query = query.Include(r => r.EnvelopeReceivers!.OrderByDescending(er => er.EnvelopeId).Take(1));
            }

            return query;
        }

        public async Task<Receiver?> ReadByAsync(string? emailAddress = null, string? signature = null) => await ReadBy(emailAddress, signature).FirstOrDefaultAsync();
    }
}