using System;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace Pen_Paper_Main
{
    public partial class Anmeldung : Window
    {
        public Anmeldung()
        {
            InitializeComponent();
        }

        private async void Anmelden_Click(object sender, RoutedEventArgs e)
        {
            string user = BenutzernameInput.Text;
            string pass = PasswortBox.Password;

            var result = await CallApi("login", user, pass);

            if (result.ok)
            {
                MessageBox.Show("Anmeldung erfolgreich");
                Lobby lobby = new Lobby();
                lobby.Show();
                this.Close();
            }
            else
            {
                MessageBox.Show("Fehler: " + result.msg);
            }
        }

        private async Task<(bool ok,string msg)> CallApi(string action, string u, string p)
        {
            using var client = new HttpClient();
            var json = JsonSerializer.Serialize(new { username = u, password = p });
            var resp = await client.PostAsync($"http://localhost/api/users.php?action={action}",
                new StringContent(json, Encoding.UTF8, "application/json"));
            var body = await resp.Content.ReadAsStringAsync();
            try
            {
                var doc = JsonDocument.Parse(body);
                bool ok = doc.RootElement.GetProperty("ok").GetBoolean();
                string msg = doc.RootElement.GetProperty("msg").GetString();
                return (ok, msg);
            }
            catch { return (false, "invalid response"); }
        }

        private void PasswortBox_PasswordChanged(object sender, RoutedEventArgs e)
        {
            PasswortPlaceholder.Visibility = string.IsNullOrEmpty(PasswortBox.Password)
                ? Visibility.Visible
                : Visibility.Collapsed;
        }

        private void BenutzernameInput_TextChanged(object sender, TextChangedEventArgs e)
        {
            BenutzernamePlaceHolder.Visibility = string.IsNullOrEmpty(BenutzernameInput.Text)
                ? Visibility.Visible
                : Visibility.Collapsed;
        }
    }
}