using System.Net;
using Galaeth.Core.Constants;
using Galaeth.Core.RepositoryInterfaces;
using Galaeth.Services.Configuration;
using Galaeth.Services.Dtos;
using Galaeth.Services.Interfaces;
using Injectio.Attributes;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;

namespace Galaeth.Services.Services;

/// <inheritdoc />
[RegisterScoped]
public class InitialUserService : IInitialUserService
{
    private readonly InitialUserConfiguration _configuration;
    private readonly IUserService _userService;
    private readonly IUserRepository _userRepository;
    private readonly ILogger<InitialUserService> _logger;

    /// <summary>
    /// Initializes a new instance of the <see cref="InitialUserService"/> class.
    /// </summary>
    /// <param name="initialUserConfiguration">Instance of <see cref="IOptions{InitialUserConfiguration}"/>.</param>
    /// <param name="userService">Instance of <see cref="IUserService"/>.</param>
    /// <param name="userRepository">Instance of <see cref="IUserRepository"/>.</param>
    /// <param name="logger">Instance of <see cref="ILogger"/>.</param>
    public InitialUserService(
        IOptions<InitialUserConfiguration> initialUserConfiguration,
        IUserService userService,
        IUserRepository userRepository,
        ILogger<InitialUserService> logger)
    {
        _configuration = initialUserConfiguration.Value;
        _userService = userService;
        _userRepository = userRepository;
        _logger = logger;
    }

    /// <inheritdoc />
    public async Task CreateFirstUserIfRequiredAsync()
    {
        // Check if any users exist.
        var userCount = await _userRepository.CountUsersAsync();

        if (userCount > 0)
        {
            return;
        }

        _logger.LogInformation("Creating initial user. Username: {username}", _configuration.Username);
        _logger.LogWarning("*************************************************************");
        _logger.LogWarning("* CHANGE INITIAL USER PASSWORD IMMEDIATELY AFTER LOGGING IN *");
        _logger.LogWarning("*************************************************************");

        var newUser = await _userService.CreateNewUser(new CreateUserDto()
        {
            Username = _configuration.Username,
            Email = _configuration.Email,
            Password = _configuration.Password,
            ActivateImmediately = true,
            IpAddress = IPAddress.Any,
        });

        // Promote user to root.
        var userEntity = await _userRepository.FindByIdAsync(newUser.Id);
        userEntity.Role = UserRole.Root;

        await _userRepository.UpdateAsync(userEntity);

        _logger.LogInformation("Initial user {username} created", newUser.Id);
    }
}