// src/Webshop.Application/Services/Admin/AdminUserService.cs
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Webshop.Application.DTOs.Users;
using Webshop.Domain.Entities; // Wichtiges using für ApplicationUser

namespace Webshop.Application.Services.Admin
{
    public class AdminUserService : IAdminUserService
    {
        // Wir verwenden nun den UserManager mit unserer neuen ApplicationUser-Klasse
        private readonly UserManager<ApplicationUser> _userManager;

        public AdminUserService(UserManager<ApplicationUser> userManager)
        {
            _userManager = userManager;
        }

        public async Task<IEnumerable<UserDto>> GetAllUsersAsync()
        {
            // Alle Benutzer aus der Datenbank laden
            var users = await _userManager.Users.ToListAsync();
            var userDtos = new List<UserDto>();

            // Für jeden Benutzer ein DTO erstellen und die Daten mappen
            foreach (var user in users)
            {
                userDtos.Add(new UserDto
                {
                    Id = user.Id,
                    Email = user.Email ?? string.Empty,
                    UserName = user.UserName ?? string.Empty,
                    CreatedDate = user.CreatedDate, // Dieses Feld ist jetzt verfügbar!
                    EmailConfirmed = user.EmailConfirmed,
                    Roles = (await _userManager.GetRolesAsync(user)).ToList() // Rollen des Benutzers abrufen
                });
            }

            return userDtos;
        }

        public async Task<UserDto?> GetUserByIdAsync(string userId)
        {
            var user = await _userManager.FindByIdAsync(userId);
            if (user == null)
            {
                return null;
            }

            // Den gefundenen Benutzer in ein DTO umwandeln
            return new UserDto
            {
                Id = user.Id,
                Email = user.Email ?? string.Empty,
                UserName = user.UserName ?? string.Empty,
                CreatedDate = user.CreatedDate,
                EmailConfirmed = user.EmailConfirmed,
                Roles = (await _userManager.GetRolesAsync(user)).ToList()
            };
        }
    }
}