bib_Talk_Chatprogramm/bibtalk/bib-talk/Repository/MainWindowDatabase.cs

using bib_talk.Business;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace bib_talk.Repository
{
    public class MainWindowDatabase
    {
        private MainWindow mainWindow; // MainWindow initialisieren
        private string loggedinUser; // Feld um eingeloggten User zu speichern

		// Konstruktor für MainWindowDatabase mit MainWindow und User Referenz
		public MainWindowDatabase(MainWindow mainWindow, string user) 
        {
            this.mainWindow = mainWindow;
            loggedinUser = user;
        }

        // Methode zum Senden einer Nachricht via Datenbank
        public async void SendMessage()
        {
            if (!string.IsNullOrEmpty(mainWindow.messageBox.Text))
            {
                var message = new MessageDto
                {
                    Username = mainWindow.loggedinUser,
                    Message = mainWindow.messageBox.Text,
                    Timestamp = DateTime.Now,
                };

                using (var client = new HttpClient())
                {
                    var json = JsonConvert.SerializeObject(message);
                    var content = new StringContent(json, Encoding.UTF8, "application/json");
                    var response = await client.PostAsync("http://daddypig.dns.navy:5114/api/messages/send", content);

                    if (response.IsSuccessStatusCode)
                    {
                        mainWindow.messageBox.Clear();
                        LoadMessages(); // Reload messages after sending
                    }
                }
            }
        }

        // Methode zum Laden der Nachrichten via Datenbank
        public async void LoadMessages()
        {
            using (var client = new HttpClient())
            {
                var response = await client.GetAsync("http://daddypig.dns.navy:5114/api/messages/get");
                if (response.IsSuccessStatusCode)
                {
                    var responseContent = await response.Content.ReadAsStringAsync();
                    var messages = JsonConvert.DeserializeObject<List<Message>>(responseContent);
                    mainWindow.chatlistbox.ItemsSource = messages;
                    if (mainWindow.chatlistbox.Items.Count > 0)
                    {
                        var lastItem = mainWindow.chatlistbox.Items[mainWindow.chatlistbox.Items.Count - 1];
                        mainWindow.chatlistbox.ScrollIntoView(lastItem);
                    }
                }
            }
        }

        // Methode zum Laden der Online Benutzer via Datenbank
        public async void LoadOnlineUsers()
        {
            using (var client = new HttpClient())
            {
                var response = await client.GetAsync("http://daddypig.dns.navy:5114/api/users/online-users");
                if (response.IsSuccessStatusCode)
                {
                    var responseContent = await response.Content.ReadAsStringAsync();
                    
                    var onlineUsers = JsonConvert.DeserializeObject<List<User>>(responseContent);
                    

                    mainWindow.onlineUsersListBox.ItemsSource = onlineUsers;
                }
            }
        }

        // Methode zum Löschen des Gesamten Chats via Datenbank
        public async void ClearMessages()
        {
            using (var client = new HttpClient())
            {
                try
                {
                    var response = await client.DeleteAsync("http://daddypig.dns.navy:5114/api/messages/clear");

                    if (response.IsSuccessStatusCode)
                    {
                        MessageBox.Show("Alle Nachrichten wurden gelöscht");
                    }
                    else
                    {
                        MessageBox.Show($"Fehler beim Löschen der Nachrichten. Status code: {response.StatusCode}");
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"Ein Fehler ist aufgetreten: {ex.Message}");
                }
            }
        }

        // Methode zum Ausloggen des Users via Datenbank
        public async void LogoutUser()
        {
            using (var client = new HttpClient())
            {
                var logoutData = new { Username = mainWindow.loggedinUser, Password = "", Email = "", Birthday = "", IsOnline = "" };
                var json = JsonConvert.SerializeObject(logoutData);
                var content = new StringContent(json, Encoding.UTF8, "application/json");

                var response = await client.PostAsync("http://daddypig.dns.navy:5114/api/users/logout", content);

                var responseContent = await response.Content.ReadAsStringAsync();

                mainWindow.Close();
            }
        }

        // Methode zum Hochladen eines Profilbildes via Datenbank
        public async Task UploadProfileImage(string filePath)
        {
	        using (var client = new HttpClient())
	        {
		        var form = new MultipartFormDataContent();
		        var stream = File.OpenRead(filePath);
		        form.Add(new StreamContent(stream), "file", Path.GetFileName(filePath));

		        var response = await client.PostAsync($"http://daddypig.dns.navy:5114/api/users/upload-profile-image?username={loggedinUser}", form);
		        if (response.IsSuccessStatusCode)
		        {
			        MessageBox.Show("Profilbild erfolgreich hochgeladen");
		        }
		        else
		        {
			        MessageBox.Show("Fehler beim Hochladen des Profilbilds");
		        }
	        }
        }
	}
}