messengerapi/code/MessengerApi/Models/Scoped/UnitOfWork.cs

using MessengerApi.Contracts.Factories;
using MessengerApi.Contracts.Models.Scoped;
using MessengerApi.Db;
using MessengerApi.Db.Contracts.Repositories;
using MessengerApi.Db.Repositories;

namespace MessengerApi.Models.Scoped
{
    public class UnitOfWork : IUnitOfWork
    {
        private MessengerDbContext context;

        public IUserRepository Users { get; }

        public IUserRouteRepository UserRoutes { get; }

        public IMessageRepository Messages { get; }

        public UnitOfWork(
            IDbContextFactory dbContextFactory)
        {
            this.context = dbContextFactory.CreateDbContext();
            this.Users = new UserRepository(this.context.Users);
            this.UserRoutes = new UserRouteRepository(this.context.UserRoutes);
            this.Messages = new MessageRepository(this.context.Messages);
        }

        public Task SaveChanges(CancellationToken ct = default)
        {
            return this.context.SaveChangesAsync(ct);
        }
    }
}