using Application.Exceptions;
using Application.Interfaces.Repositories;
using Application.Interfaces.Services;
using Domain.Entities;

namespace Application.Services;

public class UserService(IUserRepository repository) : IUserService
{
    private IUserRepository Repository { get; } = repository;

    public IEnumerable<User> GetAllUsers()
    {
        return Repository.GetAllUsers();
    }

    public User GetUserById(int id)
    {
        if (!Repository.TryGetUserById(id, out var user))
        {
            throw new ArgumentException($"User with id {id} not found");
        }

        return user;
    }

    public bool CreateUser(string username, string password, string email)
    {
        if (string.IsNullOrEmpty(username) || string.IsNullOrEmpty(password) || string.IsNullOrEmpty(email))
        {
            throw new InsufficientParametersException(["username", "password", "email"]);
        }

        if (Repository.GetAllUsers().Any(x => x.Username == username))
        {
            throw new DuplicateUsernameException(username);
        }

        if (Repository.GetAllUsers().Any(x => x.Email == email))
        {
            throw new DuplicateEmailException(email);
        }
        
        var user = new User
        {
            Id = Repository.GetAllUsers().Count() + 1,
            Username = username,
            Password = password,
            Email = email
        };
        return Repository.AddUser(user);
    }

    public bool UpdateUser(int id, string username, string password, string email)
    {
        if (string.IsNullOrEmpty(username) || string.IsNullOrEmpty(password) || string.IsNullOrEmpty(email))
        {
            throw new InsufficientParametersException(["username", "password", "email"]);
        }

        if (!Repository.TryGetUserById(id, out var user))
        {
            throw new UserNotFoundException(id);
        }
        
        user.Email = email;
        user.Password = password;
        user.Username = username;
        return Repository.UpdateUser(user);
    }
}