using System.Security.Claims;
using Hutopy.Domain.Interfaces;
using Hutopy.Domain.Models;
using Hutopy.Infrastructure.Identity;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Identity;

namespace Hutopy.Infrastructure.Services;

public class UserService(UserManager<ApplicationUser> userManager, IHttpContextAccessor contextAccessor) : IUserService
{
    public async Task CreateUserAsync(string email, string userName, string firstName, string lastName, string password)
    {
        var applicationUser = new ApplicationUser
        {
            UserName = userName,
            Email = email,
            FirstName = firstName,
            LastName = lastName
        };

        //todo: Need to handle errors better for the user.
        var response = await userManager.CreateAsync(applicationUser, password);

        if (response.Errors.Any())
        {
            throw new InvalidOperationException(response.Errors.First().Description);
        }
    }

    public async Task<UserModel?> FindUserByIdAsync(string id)
    {
        var response = await userManager.FindByIdAsync(id);

        if (response == null) return null;

        var userModel = new UserModel()
        {
            Id = response.Id,
            UserName = response.UserName,
            FirstName = response.FirstName,
            LastName = response.LastName,
            Email = response.Email,
        };

        return userModel;
    }
    
    public async Task<UserModel?> GetCurrentUserAsync()
    {
        var currentUserId = contextAccessor.HttpContext?.User.FindFirst(ClaimTypes.NameIdentifier)?.Value;
        if (string.IsNullOrEmpty(currentUserId))
        {
            return null;
        }

        return await FindUserByIdAsync(currentUserId);
    }

    public async Task<UserModel?> FindUserByEmailAsync(string email)
    {
        var response = await userManager.FindByEmailAsync(email);

        if (response == null) return null;

        var userModel = new UserModel()
        {
            Id = response.Id,
            UserName = response.UserName,
            FirstName = response.FirstName,
            LastName = response.LastName,
            Email = response.Email
        };

        return userModel;
    }
}