Add backend structure with Docker support and initial configuration files

Signed-off-by: Dmitrii <computer@yawaflua.tech> Took 4 hours 25 minutes
2026-06-28 08:20:33 +03:00
parent 7862597f45
commit eee0d44c92
46 changed files with 3141 additions and 125 deletions
@@ -1,25 +0,0 @@
-**/.dockerignore
-**/.env
-**/.git
-**/.gitignore
-**/.project
-**/.settings
-**/.toolstarget
-**/.vs
-**/.vscode
-**/.idea
-**/*.*proj.user
-**/*.dbmdl
-**/*.jfm
-**/azds.yaml
-**/bin
-**/charts
-**/docker-compose*
-**/Dockerfile*
-**/node_modules
-**/npm-debug.log
-**/obj
-**/secrets.dev.yaml
-**/values.dev.yaml
-LICENSE
-README.md
@@ -1,4 +0,0 @@
-SpMega.Backend/src/*
-SpMega.Backend/obj/*
-SpMega.Backend/appsettings.json
-SpMega.Backend/SpMega.Backend.http
@@ -1,23 +0,0 @@
-FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
-USER $APP_UID
-WORKDIR /app
-EXPOSE 8080
-EXPOSE 8081
-
-FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
-ARG BUILD_CONFIGURATION=Release
-WORKDIR /src
-COPY ["SpMega.Backend/SpMega.Backend.csproj", "SpMega.Backend/"]
-RUN dotnet restore "SpMega.Backend/SpMega.Backend.csproj"
-COPY . .
-WORKDIR "/src/SpMega.Backend"
-RUN dotnet build "./SpMega.Backend.csproj" -c $BUILD_CONFIGURATION -o /app/build
-
-FROM build AS publish
-ARG BUILD_CONFIGURATION=Release
-RUN dotnet publish "./SpMega.Backend.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
-
-FROM base AS final
-WORKDIR /app
-COPY --from=publish /app/publish .
-ENTRYPOINT ["dotnet", "SpMega.Backend.dll"]
@@ -1,39 +0,0 @@
-namespace SpMega.Backend;
-
-public class Program
-{
-    public static void Main(string[] args)
-    {
-        var builder = WebApplication.CreateBuilder(args);
-
-        // Add services to the container.
-        builder.Services.AddAuthorization();
-
-
-        var app = builder.Build();
-
-        // Configure the HTTP request pipeline.
-
-        app.UseAuthorization();
-
-        var summaries = new[]
-        {
-            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
-        };
-
-        app.MapGet("/weatherforecast", (HttpContext httpContext) =>
-        {
-            var forecast = Enumerable.Range(1, 5).Select(index =>
-                    new WeatherForecast
-                    {
-                        Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
-                        TemperatureC = Random.Shared.Next(-20, 55),
-                        Summary = summaries[Random.Shared.Next(summaries.Length)]
-                    })
-                .ToArray();
-            return forecast;
-        });
-
-        app.Run();
-    }
-}
@@ -1,14 +0,0 @@
-{
-  "$schema": "https://json.schemastore.org/launchsettings.json",
-  "profiles": {
-    "http": {
-      "commandName": "Project",
-      "dotnetRunMessages": true,
-      "launchBrowser": false,
-      "applicationUrl": "http://localhost:5129",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    }
-  }
-}
@@ -1,16 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-    <PropertyGroup>
-        <TargetFramework>net10.0</TargetFramework>
-        <Nullable>enable</Nullable>
-        <ImplicitUsings>enable</ImplicitUsings>
-        <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
-    </PropertyGroup>
-
-    <ItemGroup>
-      <Content Include="..\.dockerignore">
-        <Link>.dockerignore</Link>
-      </Content>
-    </ItemGroup>
-
-</Project>
@@ -1,6 +0,0 @@
-@SpMega.Backend_HostAddress = http://localhost:5129
-
-GET {{SpMega.Backend_HostAddress}}/weatherforecast/
-Accept: application/json
-
-###
@@ -1,12 +0,0 @@
-namespace SpMega.Backend;
-
-public class WeatherForecast
-{
-    public DateOnly Date { get; set; }
-
-    public int TemperatureC { get; set; }
-
-    public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
-
-    public string? Summary { get; set; }
-}
@@ -1,8 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  }
-}
@@ -1,9 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  },
-  "AllowedHosts": "*"
-}
@@ -1,21 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SpMega.Backend", "SpMega.Backend\SpMega.Backend.csproj", "{FF126D84-9381-4F0C-9925-FE08AC1FD07E}"
-EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{64C061F2-C216-4C79-9AC2-CC43F1C0A34D}"
-	ProjectSection(SolutionItems) = preProject
-		compose.yaml = compose.yaml
-	EndProjectSection
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{FF126D84-9381-4F0C-9925-FE08AC1FD07E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{FF126D84-9381-4F0C-9925-FE08AC1FD07E}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{FF126D84-9381-4F0C-9925-FE08AC1FD07E}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{FF126D84-9381-4F0C-9925-FE08AC1FD07E}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-EndGlobal
@@ -1,7 +0,0 @@
-services:
-  spmega.backend:
-    image: spmega.backend
-    build:
-      context: .
-      dockerfile: SpMega.Backend/Dockerfile
-
@@ -0,0 +1,102 @@
+package git.yawaflua.tech.spmega.client;
+
+import com.terraformersmc.modmenu.api.ConfigScreenFactory;
+import com.terraformersmc.modmenu.api.ModMenuApi;
+import git.yawaflua.tech.spmega.GpsHudPosition;
+import git.yawaflua.tech.spmega.ModConfig;
+import git.yawaflua.tech.spmega.SPMega;
+import git.yawaflua.tech.spmega.client.ui.service.BackendAuthenticator;
+import me.shedaniel.clothconfig2.api.ConfigBuilder;
+import me.shedaniel.clothconfig2.api.ConfigCategory;
+import me.shedaniel.clothconfig2.api.ConfigEntryBuilder;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.text.Text;
+import net.minecraft.util.Formatting;
+
+public class ModMenuIntegration implements ModMenuApi {
+    @Override
+    public ConfigScreenFactory<?> getModConfigScreenFactory() {
+        return parent -> {
+            ConfigBuilder builder = ConfigBuilder.create()
+                    .setParentScreen(parent)
+                    .setTitle(Text.translatable("title.spmega.config"));
+
+            ConfigEntryBuilder entryBuilder = builder.entryBuilder();
+            ConfigCategory general = builder.getOrCreateCategory(Text.translatable("category.spmega.general"));
+
+            ModConfig current = SPMega.getConfig();
+            if (current == null) {
+                current = ModConfig.createDefault();
+            }
+
+            final String[] apiDomain = {current.apiDomain()};
+            final String[] apiToken = {current.apiToken()};
+            final boolean[] allowBackend = {current.allowBackend()};
+            final boolean[] signQuickPayEnabled = {current.signQuickPayEnabled()};
+            final GpsHudPosition[] gpsPosition = {current.gpsPosition()};
+
+            general.addEntry(entryBuilder.startStrField(Text.translatable("option.spmega.api_domain"), current.apiDomain())
+                    .setDefaultValue(ModConfig.DEFAULT_API_DOMAIN)
+                    .setSaveConsumer(newValue -> apiDomain[0] = newValue)
+                    .build());
+
+            general.addEntry(entryBuilder.startStrField(Text.translatable("option.spmega.api_token"), current.apiToken())
+                    .setDefaultValue(ModConfig.DEFAULT_API_TOKEN)
+                    .setSaveConsumer(newValue -> apiToken[0] = newValue)
+                    .build());
+
+            general.addEntry(entryBuilder.startBooleanToggle(Text.translatable("option.spmega.allow_backend"), current.allowBackend())
+                    .setDefaultValue(ModConfig.ALLOW_BACKEND)
+                    .setSaveConsumer(newValue -> allowBackend[0] = newValue)
+                    .build());
+
+            boolean isLoggedIn = !current.apiToken().isEmpty() && !current.apiToken().equals(ModConfig.DEFAULT_API_TOKEN);
+            general.addEntry(entryBuilder.startBooleanToggle(Text.literal("Авторизоваться").formatted(Formatting.RED), isLoggedIn)
+                    .setTooltip(Text.literal("Запустить процесс авторизации через Mojang и ваш бэкенд"))
+                    .setSaveConsumer(newValue -> {
+                        if (newValue) {
+                            BackendAuthenticator.authenticate(MinecraftClient.getInstance());
+                            if (SPMega.getConfig() != null) {
+                                apiToken[0] = SPMega.getConfig().apiToken();
+                            }
+                        } else {
+                            apiToken[0] = ModConfig.DEFAULT_API_TOKEN;
+                        }
+                    })
+                    .build());
+
+            general.addEntry(entryBuilder.startBooleanToggle(Text.translatable("option.spmega.sign_quick_pay"), current.signQuickPayEnabled())
+                    .setDefaultValue(ModConfig.DEFAULT_SIGN_QUICK_PAY_ENABLED)
+                    .setSaveConsumer(newValue -> signQuickPayEnabled[0] = newValue)
+                    .build());
+
+            general.addEntry(entryBuilder.startEnumSelector(
+                            Text.translatable("option.spmega.gps_position"),
+                            GpsHudPosition.class,
+                            current.gpsPosition()
+                    )
+                    .setDefaultValue(ModConfig.DEFAULT_GPS_POSITION)
+                    .setEnumNameProvider(position -> Text.translatable("option.spmega.gps_position." + position.name().toLowerCase()))
+                    .setSaveConsumer(newValue -> gpsPosition[0] = newValue)
+                    .build());
+
+            builder.setSavingRunnable(() -> {
+                boolean gpsEnabledVal = true;
+                if (SPMega.getConfig() != null) {
+                    gpsEnabledVal = SPMega.getConfig().gpsEnabled();
+                }
+                ModConfig updated = new ModConfig(
+                        apiDomain[0],
+                        apiToken[0],
+                        allowBackend[0],
+                        signQuickPayEnabled[0],
+                        gpsEnabledVal,
+                        gpsPosition[0]
+                );
+                SPMega.setConfig(updated);
+            });
+
+            return builder.build();
+        };
+    }
+}
@@ -1,9 +1,12 @@
 package git.yawaflua.tech.spmega.client;

+import git.yawaflua.tech.spmega.ModConfig;
 import git.yawaflua.tech.spmega.SPMega;
 import git.yawaflua.tech.spmega.client.qr.QRCodeScanner;
+import git.yawaflua.tech.spmega.client.ui.GpsHudRenderer;
 import git.yawaflua.tech.spmega.client.ui.UiNotifications;
 import git.yawaflua.tech.spmega.client.ui.UiOpeners;
+import git.yawaflua.tech.spmega.client.ui.service.BackendAuthenticator;
 import git.yawaflua.tech.spmega.client.ui.service.BankUiService;
 import net.fabricmc.api.ClientModInitializer;
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
@@ -18,6 +21,7 @@ import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.option.KeyBinding;
 import net.minecraft.client.util.InputUtil;
 import net.minecraft.entity.decoration.ItemFrameEntity;
+import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.text.Text;
 import net.minecraft.util.ActionResult;
 import org.lwjgl.glfw.GLFW;
@@ -29,6 +33,9 @@ public class SPMegaClient implements ClientModInitializer {
    private static final Pattern ISOLATED_FIVE_DIGITS = Pattern.compile("(?<!\\d)(\\d{5})(?!\\d)");
    private static KeyBinding openBankMenuKeyBinding;
    private static KeyBinding scanQrKeyBinding;
+    private static KeyBinding toggleGpsKeyBinding;
+    private static boolean wasPaymentShortcutPressed = false;
+

    private static String extractCardNumber(SignBlockEntity signBlockEntity) {
        String candidate = findFiveDigits(signBlockEntity.getFrontText().getMessages(false));
@@ -65,6 +72,7 @@ public class SPMegaClient implements ClientModInitializer {

    @Override
    public void onInitializeClient() {
+        GpsHudRenderer.instance();
        openBankMenuKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyBinding(
                "key.spmega.open_menu",
                InputUtil.Type.KEYSYM,
@@ -79,6 +87,17 @@ public class SPMegaClient implements ClientModInitializer {
                KeyBinding.Category.GAMEPLAY
        ));

+        toggleGpsKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyBinding(
+                "key.spmega.toggle_gps",
+                InputUtil.Type.KEYSYM,
+                GLFW.GLFW_KEY_J,
+                KeyBinding.Category.GAMEPLAY
+        ));
+
+        if (SPMega.getConfig() != null) {
+            GpsHudRenderer.instance().setEnabled(SPMega.getConfig().gpsEnabled());
+        }
+
        ClientTickEvents.END_CLIENT_TICK.register(client -> {
            UiNotifications.instance().tick();
            while (openBankMenuKeyBinding.wasPressed()) {
@@ -87,9 +106,40 @@ public class SPMegaClient implements ClientModInitializer {
            while (scanQrKeyBinding.wasPressed()) {
                QRCodeScanner.ScanQrCode(client);
            }
+            while (toggleGpsKeyBinding.wasPressed()) {
+                GpsHudRenderer.instance().toggle();
+                if (SPMega.getConfig() != null) {
+                    ModConfig current = SPMega.getConfig();
+                    ModConfig updated = new ModConfig(
+                            current.apiDomain(),
+                            current.apiToken(),
+                            current.allowBackend(),
+                            current.signQuickPayEnabled(),
+                            GpsHudRenderer.instance().isEnabled(),
+                            current.gpsPosition()
+                    );
+                    SPMega.setConfig(updated);
+                }
+                String status = GpsHudRenderer.instance().isEnabled() ? "включен" : "выключен";
+                UiNotifications.instance().show(Text.literal("GPS Ада " + status));
+            }
+
+            if (client.player != null && client.options != null) {
+                boolean isCombinationPressed = client.options.sprintKey.isPressed() && client.options.sneakKey.isPressed() && client.options.leftKey.isPressed();
+                if (isCombinationPressed) {
+                    if (!wasPaymentShortcutPressed && client.currentScreen == null) {
+                        if (client.targetedEntity instanceof PlayerEntity targetedPlayer && targetedPlayer != client.player) {
+                            String recipient = targetedPlayer.getStringifiedName();
+                            UiOpeners.openPaymentMenu(client, recipient);
+                        }
+                    }
+                    wasPaymentShortcutPressed = true;
+                } else {
+                    wasPaymentShortcutPressed = false;
+                }
+            }
        });

-        // World HUD path (when no screen is open).
        HudRenderCallback.EVENT.register((drawContext, tickDeltaManager) -> {
            MinecraftClient client = MinecraftClient.getInstance();
            if (client.currentScreen != null || client.textRenderer == null) {
@@ -101,16 +151,35 @@ public class SPMegaClient implements ClientModInitializer {
                    client.getWindow().getScaledWidth(),
                    client.getWindow().getScaledHeight()
            );
+            GpsHudRenderer.instance().render(
+                    drawContext,
+                    client.textRenderer,
+                    client.getWindow().getScaledWidth(),
+                    client.getWindow().getScaledHeight()
+            );
        });

-        // Screen path (for all GUI screens).
-        ScreenEvents.AFTER_INIT.register((client, screen, scaledWidth, scaledHeight) ->
-                ScreenEvents.afterRender(screen).register((screenInstance, drawContext, mouseX, mouseY, tickDelta) -> {
-                    if (client.textRenderer == null) {
-                        return;
-                    }
-                    UiNotifications.instance().render(drawContext, client.textRenderer, scaledWidth, scaledHeight);
-                })
+        ScreenEvents.AFTER_INIT.register((client, screen, scaledWidth, scaledHeight) -> {
+                    ScreenEvents.afterRender(screen).register((screenInstance, drawContext, mouseX, mouseY, tickDelta) -> {
+                        if (client.textRenderer == null) {
+                            return;
+                        }
+                        UiNotifications.instance().render(drawContext, client.textRenderer, scaledWidth, scaledHeight);
+                    });
+//                    CompletableFuture.supplyAsync(() -> BackendAuthenticator.authenticate(client))
+//                            .thenAccept(authResult -> {
+//                                if (authResult) {
+//                                    System.out.println("SPMega: Authenticated on backend successfully.");
+//                                } else {
+//                                    System.err.println("SPMega: Authentication on backend failed");
+//                                }
+//                            })
+//                            .exceptionally(ex -> {
+//                                System.err.println("SPMega: Authentication error: " + ex.getMessage());
+//                                return null;
+//                            });
+
+                }
        );

        ClientPlayConnectionEvents.JOIN.register((handler, sender, client) -> {
@@ -169,5 +238,8 @@ public class SPMegaClient implements ClientModInitializer {
        });

        new ChatListener().register();
+        BackendAuthenticator.authenticate(MinecraftClient.getInstance());
+        System.out.println("Author of SPMega make it with 4 cans of monster");
+        System.out.println("Initialized beshalom! Tieie tovim!");
    }
 }
@@ -9,12 +9,14 @@ import net.minecraft.text.Text;

 import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.CompletableFuture;

 public class CardScreen extends Screen {
    private final Screen parent;
    private final BankUiService bankUiService = BankUiService.instance();
    private final UiNotifications notifications = UiNotifications.instance();
    private final List<ButtonWidget> cardButtons = new ArrayList<>();
+    private ButtonWidget historyButton;

    public CardScreen(Screen parent) {
        super(Text.literal("Управление картами"));
@@ -44,16 +46,22 @@ public class CardScreen extends Screen {
        }

        this.addDrawableChild(ButtonWidget.builder(Text.literal("Удалить"), button -> {
-            bankUiService.removeSelectedCard();
+            CompletableFuture.supplyAsync(() -> {
+                bankUiService.removeSelectedCard();
+                return true;
+            });
            notifications.showMessage(bankUiService.getLastMessage());
            this.clearAndInit();
        }).dimensions(rightX, startY, columnWidth, 20).build());

-        this.addDrawableChild(ButtonWidget.builder(Text.literal("Изменить"), button -> {
+        this.addDrawableChild(ButtonWidget.builder(Text.literal("Обновить"), button -> {
            String playerUuid = this.client != null && this.client.player != null
                    ? this.client.player.getUuidAsString()
                    : "";
-            bankUiService.refreshSelectedCard(playerUuid);
+            CompletableFuture.supplyAsync(() -> {
+                bankUiService.refreshSelectedCard(playerUuid);
+                return true;
+            });
            String message = bankUiService.getLastMessage().isBlank() ? "Карта обновлена" : bankUiService.getLastMessage();
            notifications.showMessage(message);
            this.clearAndInit();
@@ -69,6 +77,18 @@ public class CardScreen extends Screen {
            }));
        }).dimensions(rightX, startY + 48, columnWidth, 20).build());

+        historyButton = this.addDrawableChild(ButtonWidget.builder(Text.literal("История"), button -> {
+            if (this.client == null) {
+                return;
+            }
+            CardViewModel selected = bankUiService.getSelectedCard();
+            if (selected == null) {
+                notifications.show(Text.literal("Сначала выбери или добавь карту"));
+                return;
+            }
+            this.client.setScreen(new TransactionHistoryScreen(this, selected.id(), selected.title()));
+        }).dimensions(rightX, startY + 72, columnWidth, 20).build());
+
        this.addDrawableChild(ButtonWidget.builder(Text.literal("Назад"), button -> this.close())
                .dimensions(rightX, startY + 120, columnWidth, 20)
                .build());
@@ -119,5 +139,9 @@ public class CardScreen extends Screen {
            button.setMessage(Text.literal(prefix + cards.get(i).title() + suffix));
            button.active = !selected;
        }
+
+        if (historyButton != null) {
+            historyButton.active = !cards.isEmpty();
+        }
    }
 }
@@ -0,0 +1,238 @@
+package git.yawaflua.tech.spmega.client.ui;
+
+import com.google.gson.Gson;
+import git.yawaflua.tech.spmega.GpsHudPosition;
+import git.yawaflua.tech.spmega.SPMega;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.font.TextRenderer;
+import net.minecraft.client.gui.DrawContext;
+import net.minecraft.text.Text;
+import net.minecraft.world.World;
+
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+public final class GpsHudRenderer {
+    private static final GpsHudRenderer INSTANCE = new GpsHudRenderer();
+    private final Object citiesLock = new Object();
+    private boolean enabled = true;
+    private List<City> cities = new ArrayList<>();
+
+    private GpsHudRenderer() {
+        ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(r -> {
+            Thread thread = new Thread(r, "SPMega-City-Poller");
+            thread.setDaemon(true);
+            return thread;
+        });
+        scheduler.scheduleAtFixedRate(this::fetchCities, 0, 5, TimeUnit.HOURS);
+    }
+
+    public static GpsHudRenderer instance() {
+        return INSTANCE;
+    }
+
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    public void setEnabled(boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    public void toggle() {
+        this.enabled = !this.enabled;
+    }
+
+    private void fetchCities() {
+        try {
+            HttpClient client = HttpClient.newHttpClient();
+            HttpRequest request = HttpRequest.newBuilder()
+                    .uri(URI.create("https://spm-map.tonyaleksandr.ru/api/map/territories"))
+                    .GET()
+                    .build();
+            HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+            if (response.statusCode() == 200) {
+                TerritoryWrapper[] parsed = new Gson().fromJson(response.body(), TerritoryWrapper[].class);
+                if (parsed != null) {
+                    List<City> list = new ArrayList<>();
+                    for (TerritoryWrapper w : parsed) {
+                        if (w != null && w.territory != null && w.territory.nether_portal != null && w.territory.nether_portal.length >= 2) {
+                            City c = new City();
+                            c.name = w.territory.name;
+                            c.netherX = w.territory.nether_portal[0];
+                            c.netherZ = w.territory.nether_portal[1];
+                            list.add(c);
+                        }
+                    }
+                    synchronized (citiesLock) {
+                        cities = list;
+                    }
+                }
+            }
+        } catch (Exception ignored) {
+        }
+    }
+
+    public void render(DrawContext context, TextRenderer textRenderer, int width, int height) {
+        if (!enabled) {
+            return;
+        }
+
+        MinecraftClient client = MinecraftClient.getInstance();
+        if (client.world == null || client.player == null) {
+            return;
+        }
+
+        if (client.world.getRegistryKey() != World.NETHER) {
+            return;
+        }
+
+        double playerX = client.player.getX();
+        double playerZ = client.player.getZ();
+
+        LaneInfo playerLane = new LaneInfo(Math.round(playerX), Math.round(playerZ));
+
+        String titleText = "§7Ветка: " + playerLane.name + " §7(§f" + playerLane.coord + "§7)";
+        String offsetText = "§7Смещение: §f" + (playerLane.offset == 0 ? "0" : (playerLane.offset > 0 ? "+" + playerLane.offset : playerLane.offset));
+
+        City nearestCity = null;
+        double minDistanceSq = Double.MAX_VALUE;
+        for (City city : cities) {
+            double dx = playerX - (city.netherX / 8);
+            double dz = playerZ - (city.netherZ / 8);
+            double distSq = Math.sqrt(dx * dx + dz * dz);
+            if (distSq < minDistanceSq) {
+                minDistanceSq = distSq;
+                nearestCity = city;
+            }
+        }
+
+        String cityText = null;
+        if (nearestCity != null) {
+            long cx = Math.round(nearestCity.netherX / 8.0);
+            long cz = Math.round(nearestCity.netherZ / 8.0);
+            LaneInfo cityLane = new LaneInfo(cx, cz);
+            cityText = "§7Ближайший: §f" + nearestCity.name + " §7~(§f" + cityLane.name + " §f" + cityLane.coord + "§7, §7см: §f" + (cityLane.offset == 0 ? "0" : (cityLane.offset > 0 ? "+" + cityLane.offset : cityLane.offset)) + "§7)";
+        }
+
+        int padding = 6;
+        int lineSpacing = 2;
+        int textWidth = Math.max(textRenderer.getWidth(Text.literal(titleText)), textRenderer.getWidth(Text.literal(offsetText)));
+        if (cityText != null) {
+            textWidth = Math.max(textWidth, textRenderer.getWidth(Text.literal(cityText)));
+        }
+
+        int boxWidth = textWidth + padding * 2 + 6;
+        int linesCount = cityText != null ? 3 : 2;
+        int boxHeight = textRenderer.fontHeight * linesCount + lineSpacing * (linesCount - 1) + padding * 2;
+
+        GpsHudPosition position = GpsHudPosition.TOP_CENTER;
+        if (SPMega.getConfig() != null) {
+            position = SPMega.getConfig().gpsPosition();
+        }
+
+        int boxX;
+        int boxY;
+
+        switch (position) {
+            case TOP_RIGHT:
+                boxX = width - boxWidth - 10;
+                boxY = 10;
+                break;
+            case BOTTOM_LEFT:
+                boxX = 10;
+                boxY = height - boxHeight - 10;
+                break;
+            case BOTTOM_RIGHT:
+                boxX = width - boxWidth - 10;
+                boxY = height - boxHeight - 10;
+                break;
+            case TOP_CENTER:
+                boxX = (width - boxWidth) / 2;
+                boxY = 10;
+                break;
+            case BOTTOM_CENTER:
+                boxX = (width - boxWidth) / 2;
+                boxY = height - boxHeight - 10;
+                break;
+            case TOP_LEFT:
+            default:
+                boxX = 10;
+                boxY = 10;
+                break;
+        }
+
+        int bgCol = 0x90101010;
+        context.fill(boxX, boxY, boxX + boxWidth, boxY + boxHeight, bgCol);
+
+        int barWidth = 3;
+        context.fill(boxX + padding, boxY + padding, boxX + padding + barWidth, boxY + boxHeight - padding, playerLane.color);
+
+        int textX = boxX + padding + barWidth + 4;
+        int textY = boxY + padding;
+        context.drawTextWithShadow(textRenderer, Text.literal(titleText), textX, textY, 0xFFFFFFFF);
+        context.drawTextWithShadow(textRenderer, Text.literal(offsetText), textX, textY + textRenderer.fontHeight + lineSpacing, 0xFFFFFFFF);
+        if (cityText != null) {
+            context.drawTextWithShadow(textRenderer, Text.literal(cityText), textX, textY + (textRenderer.fontHeight + lineSpacing) * 2, 0xFFFFFFFF);
+        }
+    }
+
+    private static class City {
+        String name;
+        int netherX;
+        int netherZ;
+    }
+
+    private static class TerritoryWrapper {
+        Territory territory;
+    }
+
+    private static class Territory {
+        String name;
+        int[] nether_portal;
+    }
+
+    private static class LaneInfo {
+        String name;
+        int color;
+        long coord;
+        long offset;
+
+        LaneInfo(long x, long z) {
+            long absX = Math.abs(x);
+            long absZ = Math.abs(z);
+            if (absX > absZ) {
+                if (x > 0) {
+                    name = "§aЗеленая";
+                    color = 0xFF55FF55;
+                    coord = x;
+                    offset = z;
+                } else {
+                    name = "§9Синяя";
+                    color = 0xFF5555FF;
+                    coord = absX;
+                    offset = z;
+                }
+            } else {
+                if (z < 0) {
+                    name = "§cКрасная";
+                    color = 0xFFFF5555;
+                    coord = absZ;
+                    offset = x;
+                } else {
+                    name = "§eЖелтая";
+                    color = 0xFFFFFF55;
+                    coord = absZ;
+                    offset = x;
+                }
+            }
+        }
+    }
+}
@@ -0,0 +1,124 @@
+package git.yawaflua.tech.spmega.client.ui;
+
+import git.yawaflua.tech.spmega.client.ui.service.BackendAuthenticator;
+import git.yawaflua.tech.spmega.client.ui.service.BankDatabase.LocalTransaction;
+import git.yawaflua.tech.spmega.client.ui.service.BankUiService;
+import net.minecraft.client.gui.DrawContext;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.gui.widget.ButtonWidget;
+import net.minecraft.text.Text;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+
+public class TransactionHistoryScreen extends Screen {
+    private final Screen parent;
+    private final String cardId;
+    private final String cardTitle;
+    private final List<LocalTransaction> transactions = new ArrayList<>();
+    private boolean loading = true;
+    private String errorMessage = "";
+
+    public TransactionHistoryScreen(Screen parent, String cardId, String cardTitle) {
+        super(Text.literal("История транзакций"));
+        this.parent = parent;
+        this.cardId = cardId;
+        this.cardTitle = cardTitle;
+    }
+
+    @Override
+    protected void init() {
+        int centerX = this.width / 2;
+        int startY = this.height / 2 + 50;
+
+        this.addDrawableChild(ButtonWidget.builder(Text.literal("Назад"), button -> this.close())
+                .dimensions(centerX - 60, startY + 10, 120, 20)
+                .build());
+
+        loadTransactions();
+    }
+
+    private void loadTransactions() {
+        loading = true;
+        errorMessage = "";
+        transactions.clear();
+
+        CompletableFuture.runAsync(() -> {
+            try {
+                List<LocalTransaction> list = null;
+                git.yawaflua.tech.spmega.ModConfig config = git.yawaflua.tech.spmega.SPMega.getConfig();
+                if (config != null && config.allowBackend()) {
+                    try {
+                        list = BackendAuthenticator.fetchTransactionsFromBackend(cardId);
+                    } catch (Exception e) {
+                        System.err.println("[SPMEGA] Failed to fetch transactions from server, falling back to DB: " + e.getMessage());
+                    }
+                }
+
+                if (list == null) {
+                    list = BankUiService.instance().getDatabase().loadTransferHistory(cardId);
+                }
+
+                List<LocalTransaction> finalList = list;
+                if (this.client != null) {
+                    this.client.execute(() -> {
+                        this.transactions.addAll(finalList);
+                        this.loading = false;
+                    });
+                }
+            } catch (Exception e) {
+                if (this.client != null) {
+                    this.client.execute(() -> {
+                        this.errorMessage = e.getMessage();
+                        this.loading = false;
+                    });
+                }
+            }
+        });
+    }
+
+    @Override
+    public void close() {
+        if (this.client != null) {
+            this.client.setScreen(parent);
+        }
+    }
+
+    @Override
+    public void render(DrawContext context, int mouseX, int mouseY, float delta) {
+        super.render(context, mouseX, mouseY, delta);
+
+        int centerX = this.width / 2;
+        int startY = 50;
+
+        context.drawCenteredTextWithShadow(this.textRenderer, this.title, centerX, 20, 0xFFFFFF);
+        context.drawCenteredTextWithShadow(this.textRenderer, Text.literal("Карта: " + cardTitle), centerX, 35, 0xBFBFBF);
+
+        if (loading) {
+            context.drawCenteredTextWithShadow(this.textRenderer, Text.literal("Загрузка транзакций..."), centerX, this.height / 2 - 10, 0xCCCCCC);
+        } else if (!errorMessage.isEmpty()) {
+            context.drawCenteredTextWithShadow(this.textRenderer, Text.literal("Ошибка: " + errorMessage), centerX, this.height / 2 - 10, 0xFF5555);
+        } else if (transactions.isEmpty()) {
+            context.drawCenteredTextWithShadow(this.textRenderer, Text.literal("Транзакций не найдено"), centerX, this.height / 2 - 10, 0xCCCCCC);
+        } else {
+            int y = startY + 15;
+            for (int i = 0; i < Math.min(6, transactions.size()); i++) {
+                LocalTransaction tx = transactions.get(i);
+
+                String amountText = tx.amount() + " АР";
+                String dateText = tx.createdAt();
+                if (dateText.length() > 19) {
+                    dateText = dateText.substring(0, 19).replace("T", " ");
+                }
+                String commentText = tx.comment().isEmpty() ? "" : " (" + tx.comment() + ")";
+
+                String line = String.format("%s -> %s | %s%s", dateText, tx.receiver(), amountText, commentText);
+                int color = tx.status().equalsIgnoreCase("SUCCESS") ? 0x55FF55 : 0xFF5555;
+
+                context.drawCenteredTextWithShadow(this.textRenderer, Text.literal(line), centerX, y, color);
+                y += 18;
+            }
+        }
+    }
+}
@@ -0,0 +1,368 @@
+package git.yawaflua.tech.spmega.client.ui.service;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.mojang.authlib.exceptions.AuthenticationException;
+import com.mojang.authlib.minecraft.MinecraftSessionService;
+import git.yawaflua.tech.spmega.ModConfig;
+import git.yawaflua.tech.spmega.SPMega;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.session.Session;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
+public class BackendAuthenticator {
+
+    public static boolean authenticate(MinecraftClient client) {
+        Session session = client.getSession();
+        if (session == null || session.getUuidOrNull() == null) {
+            System.err.println("Cannot authenticate: Client has no valid session.");
+            return false;
+        }
+
+        MinecraftSessionService sessionService = client.getApiServices().sessionService();
+
+        try {
+            var serverId = sendStartSessionRequestToBackend(session.getUsername(), session.getUuidOrNull());
+            System.out.println("[SPMEGA] Trying to auth in mojang with serverId: " + serverId);
+            sessionService.joinServer(
+                    session.getUuidOrNull(),
+                    session.getAccessToken(),
+                    serverId
+            );
+            System.out.println("[SPMEGA] Sending session submitter to backend");
+
+            return sendAuthRequestToBackend(session.getUuidOrNull(), serverId);
+
+        } catch (AuthenticationException e) {
+            System.err.println("I cant auth by Mojang: " + e.getMessage());
+            System.err.println("Please check your credentials and try again.");
+            return false;
+
+        } catch (Exception e) {
+            System.err.println("Failed to authenticate with backend: " + e.getMessage());
+            return false;
+
+        }
+    }
+
+    private static String sendStartSessionRequestToBackend(String username, UUID uuid) throws IOException, InterruptedException {
+        ModConfig config = SPMega.getConfig();
+        String apiDomain = (config != null) ? config.apiDomain() : ModConfig.DEFAULT_API_DOMAIN;
+        if (apiDomain == null || apiDomain.isBlank()) {
+            apiDomain = ModConfig.DEFAULT_API_DOMAIN;
+        }
+        if (apiDomain.endsWith("/")) {
+            apiDomain = apiDomain.substring(0, apiDomain.length() - 1);
+        }
+
+        JsonObject jsonPayload = new JsonObject();
+        jsonPayload.addProperty("userName", username);
+        jsonPayload.addProperty("userUUID", uuid.toString());
+        String requestBody = jsonPayload.toString();
+
+        String url = apiDomain + "/api/v1/auth/start";
+
+        HttpClient httpClient = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+                .header("Content-Type", "application/json")
+                .header("Accept", "application/json")
+                .method("POST", HttpRequest.BodyPublishers.ofString(requestBody))
+                .build();
+
+        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+        if (response.statusCode() != 200) {
+            System.err.println("[SPMEGA] Server returned status code " + response.statusCode() + " on start: " + response.body());
+            throw new IOException("Server returned status code " + response.statusCode() + " on start: " + response.body());
+        }
+
+        JsonObject json = JsonParser.parseString(response.body()).getAsJsonObject();
+        if (json.has("sessionId")) {
+            return json.get("sessionId").getAsString();
+        } else {
+            System.err.println("[SPMEGA] Invalid response from start endpoint: " + response.body());
+            throw new IOException("Invalid response from start endpoint: " + response.body());
+        }
+    }
+
+    private static boolean sendAuthRequestToBackend(UUID uuid, String serverId) throws IOException, InterruptedException {
+        ModConfig config = SPMega.getConfig();
+        String apiDomain = (config != null) ? config.apiDomain() : ModConfig.DEFAULT_API_DOMAIN;
+        if (apiDomain == null || apiDomain.isBlank()) {
+            apiDomain = ModConfig.DEFAULT_API_DOMAIN;
+        }
+        if (apiDomain.endsWith("/")) {
+            apiDomain = apiDomain.substring(0, apiDomain.length() - 1);
+        }
+
+        JsonObject jsonPayload = new JsonObject();
+        jsonPayload.addProperty("userUUID", uuid.toString());
+        jsonPayload.addProperty("sessionId", serverId);
+        String requestBody = jsonPayload.toString();
+
+        String url = apiDomain + "/api/v1/auth/validate";
+
+        HttpClient httpClient = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+                .header("Content-Type", "application/json")
+                .header("Accept", "application/json")
+                .POST(HttpRequest.BodyPublishers.ofString(requestBody))
+                .build();
+
+        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+        if (response.statusCode() != 200) {
+            System.err.println("[SPMEGA] Server returned status code " + response.statusCode() + " on validate: " + response.body());
+            throw new IOException("Server returned status code " + response.statusCode() + " on validate: " + response.body());
+        }
+
+        JsonObject json = JsonParser.parseString(response.body()).getAsJsonObject();
+        if (json.has("token")) {
+            String token = json.get("token").getAsString();
+            if (config != null) {
+                ModConfig updated = new ModConfig(
+                        config.apiDomain(),
+                        token,
+                        config.allowBackend(),
+                        config.signQuickPayEnabled(),
+                        config.gpsEnabled(),
+                        config.gpsPosition()
+                );
+                SPMega.setConfig(updated);
+                System.out.println("[SPMEGA] Backend auth successful, saved token.");
+                return true;
+            } else {
+                System.err.println("[SPMEGA] Config is null, cannot save token.");
+                throw new IOException("Config is null, cannot save token.");
+            }
+        } else {
+            System.err.println("[SPMEGA] Invalid response from validate endpoint: " + response.body());
+            throw new IOException("Invalid response from validate endpoint: " + response.body());
+        }
+    }
+
+    public static void sendCardToBackend(String cardId, String cardToken) {
+        ModConfig config = SPMega.getConfig();
+        if (config == null || !config.allowBackend()) {
+            return;
+        }
+
+        String apiDomain = config.apiDomain();
+        if (apiDomain == null || apiDomain.isBlank()) {
+            apiDomain = ModConfig.DEFAULT_API_DOMAIN;
+        }
+        if (apiDomain.endsWith("/")) {
+            apiDomain = apiDomain.substring(0, apiDomain.length() - 1);
+        }
+
+        String url = apiDomain + "/api/v1/auth/cards";
+
+        JsonObject jsonPayload = new JsonObject();
+        jsonPayload.addProperty("id", cardId);
+        jsonPayload.addProperty("token", cardToken);
+        String requestBody = jsonPayload.toString();
+
+        HttpClient httpClient = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+                .header("Content-Type", "application/json")
+                .header("Accept", "application/json")
+                .header("Authorization", "Bearer " + config.apiToken())
+                .PUT(HttpRequest.BodyPublishers.ofString(requestBody))
+                .build();
+
+        httpClient.sendAsync(request, HttpResponse.BodyHandlers.ofString())
+                .thenAccept(response -> {
+                    if (response.statusCode() != 200 && response.statusCode() != 204) {
+                        System.err.println("[SPMEGA] Failed to send card to backend: status code "
+                                + response.statusCode() + ", body: " + response.body());
+                    } else {
+                        System.out.println("[SPMEGA] Card successfully synchronized with backend.");
+                    }
+                })
+                .exceptionally(throwable -> {
+                    System.err.println("[SPMEGA] Error sending card to backend: " + throwable.getMessage());
+                    return null;
+                });
+    }
+
+    public static List<CardCredentials> fetchCardsFromBackend() throws IOException, InterruptedException {
+        ModConfig config = SPMega.getConfig();
+        if (config == null || !config.allowBackend()) {
+            return List.of();
+        }
+
+        String apiDomain = config.apiDomain();
+        if (apiDomain == null || apiDomain.isBlank()) {
+            apiDomain = ModConfig.DEFAULT_API_DOMAIN;
+        }
+        if (apiDomain.endsWith("/")) {
+            apiDomain = apiDomain.substring(0, apiDomain.length() - 1);
+        }
+
+        String url = apiDomain + "/api/v1/auth/cards";
+
+        HttpClient httpClient = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+                .header("Accept", "application/json")
+                .header("Authorization", "Bearer " + config.apiToken())
+                .GET()
+                .build();
+
+        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+        if (response.statusCode() != 200) {
+            throw new IOException("Server returned status code " + response.statusCode() + " on fetch cards.");
+        }
+
+        com.google.gson.JsonArray cardsArray = JsonParser.parseString(response.body()).getAsJsonArray();
+        List<CardCredentials> cards = new ArrayList<>();
+        for (com.google.gson.JsonElement el : cardsArray) {
+            JsonObject cardJson = el.getAsJsonObject();
+            String cardId = "";
+            if (cardJson.has("cardId") && !cardJson.get("cardId").isJsonNull()) {
+                cardId = cardJson.get("cardId").getAsString();
+            } else if (cardJson.has("id") && !cardJson.get("id").isJsonNull()) {
+                cardId = cardJson.get("id").getAsString();
+            }
+
+            String cardToken = "";
+            if (cardJson.has("cardToken") && !cardJson.get("cardToken").isJsonNull()) {
+                cardToken = cardJson.get("cardToken").getAsString();
+            } else if (cardJson.has("token") && !cardJson.get("token").isJsonNull()) {
+                cardToken = cardJson.get("token").getAsString();
+            }
+
+            if (!cardId.isEmpty() && !cardToken.isEmpty()) {
+                cards.add(new CardCredentials(cardId, cardToken));
+            }
+        }
+        return cards;
+    }
+
+    public static void deleteCardOnBackend(String cardId) {
+        ModConfig config = SPMega.getConfig();
+        if (config == null || !config.allowBackend()) {
+            return;
+        }
+
+        String apiDomain = config.apiDomain();
+        if (apiDomain == null || apiDomain.isBlank()) {
+            apiDomain = ModConfig.DEFAULT_API_DOMAIN;
+        }
+        if (apiDomain.endsWith("/")) {
+            apiDomain = apiDomain.substring(0, apiDomain.length() - 1);
+        }
+
+        String url = apiDomain + "/api/v1/auth/cards/" + cardId;
+
+        HttpClient httpClient = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+                .header("Accept", "application/json")
+                .header("Authorization", "Bearer " + config.apiToken())
+                .DELETE()
+                .build();
+
+        httpClient.sendAsync(request, HttpResponse.BodyHandlers.ofString())
+                .thenAccept(response -> {
+                    if (response.statusCode() != 200 && response.statusCode() != 204) {
+                        System.err.println("[SPMEGA] Failed to delete card from backend: status code "
+                                + response.statusCode() + ", body: " + response.body());
+                    } else {
+                        System.out.println("[SPMEGA] Card successfully deleted from backend.");
+                    }
+                })
+                .exceptionally(throwable -> {
+                    System.err.println("[SPMEGA] Error deleting card from backend: " + throwable.getMessage());
+                    return null;
+                });
+    }
+
+    public static boolean createTransactionOnBackend(String senderCardId, String receiver, long amount, String comment) throws IOException, InterruptedException {
+        ModConfig config = SPMega.getConfig();
+        if (config == null) {
+            throw new IOException("ModConfig is null");
+        }
+
+        String apiDomain = config.apiDomain();
+        if (apiDomain == null || apiDomain.isBlank()) {
+            apiDomain = ModConfig.DEFAULT_API_DOMAIN;
+        }
+        if (apiDomain.endsWith("/")) {
+            apiDomain = apiDomain.substring(0, apiDomain.length() - 1);
+        }
+
+        String url = apiDomain + "/api/v1/transactions";
+
+        JsonObject jsonPayload = new JsonObject();
+        jsonPayload.addProperty("senderCardId", senderCardId);
+        jsonPayload.addProperty("cardId", senderCardId);
+        jsonPayload.addProperty("receiver", receiver);
+        jsonPayload.addProperty("recipient", receiver);
+        jsonPayload.addProperty("amount", amount);
+        jsonPayload.addProperty("comment", comment);
+        String requestBody = jsonPayload.toString();
+
+        HttpClient httpClient = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+                .header("Content-Type", "application/json")
+                .header("Accept", "application/json")
+                .header("Authorization", "Bearer " + config.apiToken())
+                .PUT(HttpRequest.BodyPublishers.ofString(requestBody))
+                .build();
+
+        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+        if (response.statusCode() == 200 || response.statusCode() == 201 || response.statusCode() == 204) {
+            return true;
+        } else {
+            throw new IOException("Server returned status code " + response.statusCode() + ": " + response.body());
+        }
+    }
+
+    public static List<BankDatabase.LocalTransaction> fetchTransactionsFromBackend(String cardId) throws IOException, InterruptedException {
+        ModConfig config = SPMega.getConfig();
+        if (config == null || !config.allowBackend()) {
+            return List.of();
+        }
+
+        String apiDomain = config.apiDomain();
+        if (apiDomain == null || apiDomain.isBlank()) {
+            apiDomain = ModConfig.DEFAULT_API_DOMAIN;
+        }
+        if (apiDomain.endsWith("/")) {
+            apiDomain = apiDomain.substring(0, apiDomain.length() - 1);
+        }
+
+        String url = apiDomain + "/api/v1/transactions?cardId=" + cardId;
+
+        HttpClient httpClient = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder(URI.create(url))
+                .header("Accept", "application/json")
+                .header("Authorization", "Bearer " + config.apiToken())
+                .GET()
+                .build();
+
+        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+        if (response.statusCode() != 200) {
+            throw new IOException("Server returned status code " + response.statusCode() + " on fetch transactions.");
+        }
+
+        com.google.gson.JsonArray transactionsArray = JsonParser.parseString(response.body()).getAsJsonArray();
+        List<BankDatabase.LocalTransaction> list = new ArrayList<>();
+        for (com.google.gson.JsonElement el : transactionsArray) {
+            JsonObject json = el.getAsJsonObject();
+            String receiver = json.has("receiver") ? json.get("receiver").getAsString() : (json.has("recipient") ? json.get("recipient").getAsString() : "unknown");
+            long amount = json.has("amount") ? json.get("amount").getAsLong() : 0L;
+            String comment = json.has("comment") && !json.get("comment").isJsonNull() ? json.get("comment").getAsString() : "";
+            String status = json.has("status") ? json.get("status").getAsString() : "SUCCESS";
+            String createdAt = json.has("createdAt") ? json.get("createdAt").getAsString() : (json.has("created_at") ? json.get("created_at").getAsString() : "");
+
+            list.add(new BankDatabase.LocalTransaction(receiver, amount, comment, status, createdAt));
+        }
+        return list;
+    }
+}
@@ -166,6 +166,31 @@ public final class BankDatabase {
        }
    }

+    public synchronized List<LocalTransaction> loadTransferHistory(String cardId) {
+        String sql = "SELECT receiver, amount, comment, status, created_at FROM transfer_history WHERE sender_card_id = ? ORDER BY id DESC";
+        List<LocalTransaction> result = new ArrayList<>();
+        try (Connection connection = open(); PreparedStatement statement = connection.prepareStatement(sql)) {
+            statement.setString(1, cardId);
+            try (ResultSet rs = statement.executeQuery()) {
+                while (rs.next()) {
+                    result.add(new LocalTransaction(
+                            rs.getString("receiver"),
+                            rs.getLong("amount"),
+                            rs.getString("comment"),
+                            rs.getString("status"),
+                            rs.getString("created_at")
+                    ));
+                }
+            }
+            return result;
+        } catch (SQLException exception) {
+            throw new RuntimeException("Failed to load transfer history", exception);
+        }
+    }
+
+    public record LocalTransaction(String receiver, long amount, String comment, String status, String createdAt) {
+    }
+
    private Connection open() throws SQLException {
        return DriverManager.getConnection(jdbcUrl);
    }
@@ -1,5 +1,7 @@
 package git.yawaflua.tech.spmega.client.ui.service;

+import git.yawaflua.tech.spmega.ModConfig;
+import git.yawaflua.tech.spmega.SPMega;
 import git.yawaflua.tech.spmega.api.SPWorldsApiClient;
 import net.fabricmc.loader.api.FabricLoader;

@@ -92,7 +94,28 @@ public final class BankUiService {
        return lastMessage;
    }

+    public synchronized void syncCardsWithBackend(String playerUuid) {
+        try {
+            List<CardCredentials> backendCards = BackendAuthenticator.fetchCardsFromBackend();
+            boolean changed = false;
+            for (CardCredentials creds : backendCards) {
+                if (database.getCredentials(creds.cardId()) == null) {
+                    database.upsertCardCredentials(creds.cardId(), creds.cardToken());
+                    refreshCard(creds.cardId(), creds.cardToken(), playerUuid, false, false);
+                    changed = true;
+                }
+            }
+            if (changed) {
+                reloadCardsFromDb();
+            }
+        } catch (Exception e) {
+            System.err.println("[SPMEGA] Failed to sync cards with backend: " + e.getMessage());
+        }
+    }
+
    public synchronized void refreshOnServerJoin(String playerUuid) {
+        syncCardsWithBackend(playerUuid);
+
        List<StoredCard> storedCards = database.loadCards();
        for (StoredCard card : storedCards) {
            refreshCard(card.cardId(), card.cardToken(), playerUuid, false, false);
@@ -158,7 +181,12 @@ public final class BankUiService {
            return;
        }

-        database.deleteCard(selected.id());
+        String cardId = selected.id();
+        database.deleteCard(cardId);
+        ModConfig config = SPMega.getConfig();
+        if (config.allowBackend())
+            BackendAuthenticator.deleteCardOnBackend(cardId);
+
        reloadCardsFromDb();
        if (selectedCardIndex >= cards.size()) {
            selectedCardIndex = Math.max(0, cards.size() - 1);
@@ -190,21 +218,47 @@ public final class BankUiService {
            return false;
        }

+        git.yawaflua.tech.spmega.ModConfig config = git.yawaflua.tech.spmega.SPMega.getConfig();
+        boolean useBackend = config != null && config.allowBackend();
+
        try {
-            SPWorldsApiClient.TransactionResult result = apiClient.createTransaction(
-                    toApiAuth(credentials),
-                    draft.recipient(),
-                    draft.amount(),
-                    draft.comment()
-            );
+            long newBalance = 0;
+            if (useBackend) {
+                BackendAuthenticator.createTransactionOnBackend(
+                        draft.senderCardId(),
+                        draft.recipient(),
+                        draft.amount(),
+                        draft.comment()
+                );
+                try {
+                    refreshCard(credentials.cardId(), credentials.cardToken(), "", false, false);
+                    StoredCard updatedCard = database.loadCards().stream()
+                            .filter(c -> c.cardId().equals(credentials.cardId()))
+                            .findFirst()
+                            .orElse(null);
+                    if (updatedCard != null) {
+                        newBalance = updatedCard.balance();
+                    }
+                } catch (Exception e) {
+                    System.err.println("[SPMEGA] Failed to refresh card balance after transaction: " + e.getMessage());
+                }
+            } else {
+                SPWorldsApiClient.TransactionResult result = apiClient.createTransaction(
+                        toApiAuth(credentials),
+                        draft.recipient(),
+                        draft.amount(),
+                        draft.comment()
+                );
+                newBalance = result.balance();
+                database.updateCardBalance(credentials.cardId(), newBalance);
+            }

-            database.updateCardBalance(credentials.cardId(), result.balance());
            database.insertTransferHistory(
                    credentials.cardId(),
                    draft.recipient(),
                    draft.amount(),
                    draft.comment(),
-                    result.balance(),
+                    newBalance,
                    "SUCCESS"
            );

@@ -264,6 +318,13 @@ public final class BankUiService {
                    return true;
                }
            }
+            git.yawaflua.tech.spmega.ModConfig config = git.yawaflua.tech.spmega.SPMega.getConfig();
+            if (config.allowBackend())
+                CompletableFuture.supplyAsync(() -> {
+                            BackendAuthenticator.sendCardToBackend(cardId, cardToken);
+                            return true;
+                        }
+                );

            lastMessage = "";
            return true;
@@ -300,4 +361,8 @@ public final class BankUiService {
        }
        return database.getCredentials(selected.id());
    }
+
+    public BankDatabase getDatabase() {
+        return database;
+    }
 }
@@ -14,6 +14,22 @@
  "message.spmega.qr.error": "Failed to scan QR from screen",
  "message.spmega.qr.hover_tip": "Click to open link",
  "message.spmega.qr.found_link": "Found link: %s",
-  "message.spmega.qr.failed_open": "Failed to open link"
+  "message.spmega.qr.failed_open": "Failed to open link",
+  "key.spmega.toggle_gps": "Toggle Nether GPS",
+  "title.spmega.config": "SPMega Settings",
+  "category.spmega.general": "General Settings",
+  "option.spmega.api_domain": "API Domain",
+  "option.spmega.api_token": "API Token",
+  "option.spmega.allow_backend": "Allow saving data, transactions and other sensitive information to the backend",
+  "option.spmega.sign_quick_pay": "Quick Pay by Signs",
+  "option.spmega.gps_position": "Nether GPS position",
+  "option.spmega.gps_position.top_left": "Top-Left",
+  "option.spmega.gps_position.top_right": "Top-Right",
+  "option.spmega.gps_position.bottom_left": "Bottom-Left",
+  "option.spmega.gps_position.bottom_right": "Bottom-Right",
+  "option.spmega.gps_position.bottom_center": "Bottom-center",
+  "option.spmega.gps_position.top_center": "Top-center"
 }

+
+
@@ -0,0 +1,33 @@
+{
+  "category.spmega": "SPMega",
+  "key.spmega.open_menu": "Открыть меню SPMega",
+  "key.spmega.scan_qr": "Сканировать QR-код с экрана",
+  "key.spmega.toggle_gps": "Вкл/Выкл GPS Ада",
+  "button.spmega.scan_qr": "Сканировать QR",
+  "button.spmega.qr.cancel": "Отмена",
+  "button.spmega.qr.open_link": "Открыть ссылку",
+  "screen.spmega.qr.confirm_title": "Подтверждение ссылки",
+  "screen.spmega.qr.accept_link": "Открыть эту ссылку?",
+  "message.spmega.qr.capture_failed": "Не удалось сделать снимок экрана Minecraft",
+  "message.spmega.qr.not_found": "QR-код на экране не найден",
+  "message.spmega.qr.invalid_url": "QR-код не содержит валидный http/https URL",
+  "message.spmega.qr.opened": "Открыто: %s",
+  "message.spmega.qr.error": "Не удалось отсканировать QR-код с экрана",
+  "message.spmega.qr.hover_tip": "Нажмите, чтобы открыть ссылку",
+  "message.spmega.qr.found_link": "Найдена ссылка: %s",
+  "message.spmega.qr.failed_open": "Не удалось открыть ссылку",
+  "title.spmega.config": "Настройки SPMega",
+  "category.spmega.general": "Основные настройки",
+  "option.spmega.api_domain": "Домен API",
+  "option.spmega.api_token": "Токен API",
+  "option.spmega.allow_backend": "Разрешить сохранение данных, транзакций и другой получаемой информации на сервере",
+  "option.spmega.sign_quick_pay": "Быстрая оплата по табличкам",
+  "option.spmega.gps_position": "Положение GPS Ада",
+  "option.spmega.gps_position.top_left": "Слева вверху",
+  "option.spmega.gps_position.top_right": "Справа вверху",
+  "option.spmega.gps_position.bottom_left": "Слева внизу",
+  "option.spmega.gps_position.bottom_center": "Снизу по-центру",
+  "option.spmega.gps_position.top_center": "Сверху по-центру",
+  "option.spmega.gps_position.bottom_right": "Снизу справа"
+}
+
@@ -42,19 +42,39 @@ public final class ConfigManager {
            shouldSave = true;
        }

+        boolean allowAccess = readBoolean(properties, "allow.backend", defaults.allowBackend());
+        String rawAllowAccess = properties.getProperty("sign.quickPay.enabled");
+        if (rawAllowAccess == null || !Boolean.toString(allowAccess).equalsIgnoreCase(rawAllowAccess.trim())) {
+            shouldSave = true;
+        }
+
        boolean signQuickPayEnabled = readBoolean(properties, "sign.quickPay.enabled", defaults.signQuickPayEnabled());
        String rawQuickPay = properties.getProperty("sign.quickPay.enabled");
        if (rawQuickPay == null || !Boolean.toString(signQuickPayEnabled).equalsIgnoreCase(rawQuickPay.trim())) {
            shouldSave = true;
        }

-        ModConfig config = new ModConfig(apiDomain, apiToken, signQuickPayEnabled);
+        boolean gpsEnabled = readBoolean(properties, "gps.enabled", defaults.gpsEnabled());
+        String rawGps = properties.getProperty("gps.enabled");
+        if (rawGps == null || !Boolean.toString(gpsEnabled).equalsIgnoreCase(rawGps.trim())) {
+            shouldSave = true;
+        }
+
+        GpsHudPosition gpsPosition = readEnum(properties, "gps.position", GpsHudPosition.class, defaults.gpsPosition());
+        String rawPosition = properties.getProperty("gps.position");
+        if (rawPosition == null || !gpsPosition.name().equalsIgnoreCase(rawPosition.trim())) {
+            shouldSave = true;
+        }
+
+        ModConfig config = new ModConfig(apiDomain, apiToken, allowAccess, signQuickPayEnabled, gpsEnabled, gpsPosition);
+

        if (shouldSave) {
            save(configPath, config);
        }

        return config;
+
    }

    private static String readString(Properties properties, String key, String fallback) {
@@ -97,11 +117,18 @@ public final class ConfigManager {
        return fallback;
    }

+    public static void save(ModConfig config) {
+        Path configPath = FabricLoader.getInstance().getConfigDir().resolve(FILE_NAME);
+        save(configPath, config);
+    }
+
    private static void save(Path configPath, ModConfig config) {
        Properties properties = new Properties();
        properties.setProperty("api.domain", config.apiDomain());
        properties.setProperty("api.token", config.apiToken());
        properties.setProperty("sign.quickPay.enabled", Boolean.toString(config.signQuickPayEnabled()));
+        properties.setProperty("gps.enabled", Boolean.toString(config.gpsEnabled()));
+        properties.setProperty("gps.position", config.gpsPosition().name());

        try {
            Files.createDirectories(configPath.getParent());
@@ -112,5 +139,17 @@ public final class ConfigManager {
            throw new RuntimeException("Failed to save config: " + configPath, exception);
        }
    }
+
+    private static <E extends Enum<E>> E readEnum(Properties properties, String key, Class<E> enumClass, E fallback) {
+        String value = properties.getProperty(key);
+        if (value == null || value.trim().isEmpty()) {
+            return fallback;
+        }
+        try {
+            return Enum.valueOf(enumClass, value.trim().toUpperCase());
+        } catch (IllegalArgumentException exception) {
+            return fallback;
+        }
+    }
 }

@@ -0,0 +1,21 @@
+package git.yawaflua.tech.spmega;
+
+public enum GpsHudPosition {
+    TOP_LEFT("Слева вверху"),
+    TOP_RIGHT("Справа вверху"),
+    BOTTOM_LEFT("Слева внизу"),
+    BOTTOM_RIGHT("Справа внизу"),
+
+    TOP_CENTER("Сверху по-центру"),
+    BOTTOM_CENTER("Снизу по-центру");
+
+    private final String displayName;
+
+    GpsHudPosition(String displayName) {
+        this.displayName = displayName;
+    }
+
+    public String getDisplayName() {
+        return displayName;
+    }
+}
@@ -1,16 +1,24 @@
 package git.yawaflua.tech.spmega;

-public record ModConfig(String apiDomain, String apiToken, boolean signQuickPayEnabled) {
-    public static final String DEFAULT_API_DOMAIN = "https://spmega-api.yawaflua.tech";
+public record ModConfig(String apiDomain, String apiToken, boolean allowBackend, boolean signQuickPayEnabled,
+                        boolean gpsEnabled, GpsHudPosition gpsPosition) {
+    public static final String DEFAULT_API_DOMAIN = "http://localhost:5129";
+    public static final boolean ALLOW_BACKEND = false;
    public static final String DEFAULT_API_TOKEN = "ulBKE9MWEtIGiPAhXV69I28W9BRiSrV3";
    public static final boolean DEFAULT_SIGN_QUICK_PAY_ENABLED = true;
+    public static final boolean DEFAULT_GPS_ENABLED = true;
+    public static final GpsHudPosition DEFAULT_GPS_POSITION = GpsHudPosition.TOP_LEFT;

    public static ModConfig createDefault() {
        return new ModConfig(
                DEFAULT_API_DOMAIN,
                DEFAULT_API_TOKEN,
-                DEFAULT_SIGN_QUICK_PAY_ENABLED
+                ALLOW_BACKEND,
+                DEFAULT_SIGN_QUICK_PAY_ENABLED,
+                DEFAULT_GPS_ENABLED,
+                DEFAULT_GPS_POSITION
        );
    }
 }

+
@@ -9,6 +9,11 @@ public class SPMega implements ModInitializer {
        return config;
    }

+    public static void setConfig(ModConfig newConfig) {
+        config = newConfig;
+        ConfigManager.save(newConfig);
+    }
+
    @Override
    public void onInitialize() {
        config = ConfigManager.loadOrCreate();
@@ -8,6 +8,7 @@
    "Dmitri 'yawaflua' Shimanski aka DOLBAYEB"
  ],
  "contact": {
+
  },
  "license": "CC BY-NC-ND 4.0",
  "icon": "icon.png",
@@ -19,6 +20,9 @@
    "client": [
      "git.yawaflua.tech.spmega.client.SPMegaClient"
    ],
+    "modmenu": [
+      "git.yawaflua.tech.spmega.client.ModMenuIntegration"
+    ],
    "main": [
      "git.yawaflua.tech.spmega.SPMega"
    ]