using System;
using System.Linq;
using JetBrains.Annotations;
using Portoa.Persistence;

namespace VideoGameQuotes.Api.Persistence {

	public interface IUserService {
		User Save(User user);
		[CanBeNull]
		User FindByUsername(string name);
		[CanBeNull]
		User FindByIpAddress(string ipAddress);
		void Delete(int id);
		void Ban(User user);
		[CanBeNull]
		User FindByUsernameOrIp(string usernameOrIp);
		[NotNull]
		User FindById(int id);
	}

	public class UserService : IUserService {
		private readonly IUserRepository repository;

		public UserService(IUserRepository repository) {
			this.repository = repository;
		}

		[UnitOfWork]
		public User Save(User user) {
			return repository.Save(user);
		}

		[UnitOfWork]
		public User FindByUsername(string name) {
			return repository.FindByUsername(name);
		}

		[UnitOfWork]
		public User FindByIpAddress(string ipAddress) {
			return repository.FindByIpAddress(ipAddress);
		}

		[UnitOfWork]
		public void Delete(int id) {
			repository.Delete(id);
		}

		[UnitOfWork]
		public void Ban(User user) {
			throw new NotImplementedException();
		}

		[UnitOfWork]
		public User FindByUsernameOrIp(string usernameOrIp) {
			return repository
				.Records
				.FirstOrDefault(user => user.Username == usernameOrIp || user.IpAddress == usernameOrIp);
		}

		[UnitOfWork]
		public User FindById(int id) {
			return repository.FindById(id);
		}
	}
}