Adds QR-code scanner to game

Fixes notifications on non-screen elements
adds logging for resps from api SPWORLDS

Signed-off-by: Dmitrii <computer@yawaflua.tech>

Took 2 hours 15 minutes

build.gradle

@@ -50,6 +50,8 @@ dependencies {
     }
 
     include(implementation("org.xerial:sqlite-jdbc:3.46.1.3"))
+    include(clientImplementation("com.google.zxing:core:${project.zxing_version}"))
+    include(clientImplementation("com.google.zxing:javase:${project.zxing_version}"))
 }
 
 processResources {

gradle.properties

@@ -6,10 +6,11 @@ minecraft_version=1.21.11
 yarn_mappings=1.21.11+build.4
 loader_version=0.18.1
 # Mod Properties
-mod_version=0.1-pre-alpha
+mod_version=0.2-pre-alpha
 maven_group=git.yawaflua.tech
 archives_base_name=SPMega
 # Dependencies
 # check this on https://modmuss50.me/fabric.html
 fabric_version=0.141.1+1.21.11
 cloth_config_version=21.11.153
+zxing_version=3.5.3

src/client/java/git/yawaflua/tech/spmega/client/SPMegaClient.java

@@ -1,17 +1,23 @@
 package git.yawaflua.tech.spmega.client;
 
 import git.yawaflua.tech.spmega.SPMega;
+import git.yawaflua.tech.spmega.client.qr.QRCodeScanner;
+import git.yawaflua.tech.spmega.client.ui.UiNotifications;
 import git.yawaflua.tech.spmega.client.ui.UiOpeners;
 import git.yawaflua.tech.spmega.client.ui.service.BankUiService;
 import net.fabricmc.api.ClientModInitializer;
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
 import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
 import net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents;
+import net.fabricmc.fabric.api.client.rendering.v1.HudRenderCallback;
+import net.fabricmc.fabric.api.client.screen.v1.ScreenEvents;
 import net.fabricmc.fabric.api.event.player.UseBlockCallback;
+import net.fabricmc.fabric.api.event.player.UseEntityCallback;
 import net.minecraft.block.entity.SignBlockEntity;
 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.text.Text;
 import net.minecraft.util.ActionResult;
 import org.lwjgl.glfw.GLFW;
@@ -22,6 +28,7 @@ import java.util.regex.Pattern;
 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 String extractCardNumber(SignBlockEntity signBlockEntity) {
         String candidate = findFiveDigits(signBlockEntity.getFrontText().getMessages(false));
@@ -31,16 +38,31 @@ public class SPMegaClient implements ClientModInitializer {
         return findFiveDigits(signBlockEntity.getBackText().getMessages(false));
     }
 
+    private static String extractCardNumber(ItemFrameEntity itemFrameEntity) {
+        if (itemFrameEntity.getHeldItemStack().isEmpty()) {
+            return null;
+        }
+        return findFiveDigits(itemFrameEntity.getHeldItemStack().getName().getString());
+    }
+
     private static String findFiveDigits(Text[] lines) {
         for (Text line : lines) {
-            Matcher matcher = ISOLATED_FIVE_DIGITS.matcher(line.getString());
-            if (matcher.find()) {
-                return matcher.group(1);
+            String candidate = findFiveDigits(line.getString());
+            if (candidate != null) {
+                return candidate;
             }
         }
         return null;
     }
 
+    private static String findFiveDigits(String text) {
+        Matcher matcher = ISOLATED_FIVE_DIGITS.matcher(text);
+        if (matcher.find()) {
+            return matcher.group(1);
+        }
+        return null;
+    }
+
     @Override
     public void onInitializeClient() {
         openBankMenuKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyBinding(
@@ -50,12 +72,47 @@ public class SPMegaClient implements ClientModInitializer {
                 KeyBinding.Category.GAMEPLAY
         ));
 
+        scanQrKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyBinding(
+                "key.spmega.scan_qr",
+                InputUtil.Type.KEYSYM,
+                GLFW.GLFW_KEY_O,
+                KeyBinding.Category.GAMEPLAY
+        ));
+
         ClientTickEvents.END_CLIENT_TICK.register(client -> {
+            UiNotifications.instance().tick();
             while (openBankMenuKeyBinding.wasPressed()) {
                 UiOpeners.openMainMenu(client);
             }
+            while (scanQrKeyBinding.wasPressed()) {
+                QRCodeScanner.ScanQrCode(client);
+            }
         });
 
+        // World HUD path (when no screen is open).
+        HudRenderCallback.EVENT.register((drawContext, tickDeltaManager) -> {
+            MinecraftClient client = MinecraftClient.getInstance();
+            if (client.currentScreen != null || client.textRenderer == null) {
+                return;
+            }
+            UiNotifications.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);
+                })
+        );
+
         ClientPlayConnectionEvents.JOIN.register((handler, sender, client) -> {
             if (client.player != null) {
                 BankUiService.instance().refreshOnServerJoin(client.player.getUuidAsString());
@@ -73,17 +130,42 @@ public class SPMegaClient implements ClientModInitializer {
                 return ActionResult.PASS;
             }
 
-            if (!(world.getBlockEntity(hitResult.getBlockPos()) instanceof SignBlockEntity signBlockEntity)) {
+            if (world.getBlockEntity(hitResult.getBlockPos()) instanceof SignBlockEntity signBlockEntity) {
+                String cardNumber = extractCardNumber(signBlockEntity);
+                if (cardNumber == null) {
+                    return ActionResult.PASS;
+                }
+
+                UiOpeners.openPaymentMenu(MinecraftClient.getInstance(), cardNumber);
+                return ActionResult.SUCCESS;
+            } else {
                 return ActionResult.PASS;
             }
 
-            String cardNumber = extractCardNumber(signBlockEntity);
-            if (cardNumber == null) {
+        });
+
+        UseEntityCallback.EVENT.register((player, world, hand, entity, hitResult) -> {
+            if (!world.isClient()) {
+                return ActionResult.PASS;
+            }
+            if (!player.isSneaking()) {
+                return ActionResult.PASS;
+            }
+            if (SPMega.getConfig() == null || !SPMega.getConfig().signQuickPayEnabled()) {
+                return ActionResult.PASS;
+            }
+            if (entity instanceof ItemFrameEntity itemFrameEntity) {
+                String cardNumber = extractCardNumber(itemFrameEntity);
+                if (cardNumber == null) {
+                    return ActionResult.PASS;
+                }
+
+                UiOpeners.openPaymentMenu(MinecraftClient.getInstance(), cardNumber);
+                return ActionResult.SUCCESS;
+            } else {
                 return ActionResult.PASS;
             }
 
-            UiOpeners.openPaymentMenu(MinecraftClient.getInstance(), cardNumber);
-            return ActionResult.SUCCESS;
         });
     }
 }

src/client/java/git/yawaflua/tech/spmega/client/qr/QRCodeScanner.java

@@ -0,0 +1,131 @@
+package git.yawaflua.tech.spmega.client.qr;
+
+import com.google.zxing.*;
+import com.google.zxing.common.GlobalHistogramBinarizer;
+import com.google.zxing.common.HybridBinarizer;
+import com.google.zxing.multi.GenericMultipleBarcodeReader;
+import git.yawaflua.tech.spmega.client.ui.QRcodeAcceptScreen;
+import git.yawaflua.tech.spmega.client.ui.UiNotifications;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.texture.NativeImage;
+import net.minecraft.client.util.ScreenshotRecorder;
+import net.minecraft.text.Text;
+
+import java.awt.image.BufferedImage;
+import java.util.Collections;
+import java.util.EnumMap;
+import java.util.Map;
+
+public class QRCodeScanner {
+
+    public static void ScanQrCode(MinecraftClient client) {
+        if (client == null || client.player == null || client.getFramebuffer() == null) {
+            return;
+        }
+        UiNotifications notifications = UiNotifications.instance();
+        int framebufferWidth = client.getWindow().getFramebufferWidth();
+        int framebufferHeight = client.getWindow().getFramebufferHeight();
+        if (framebufferWidth <= 0 || framebufferHeight <= 0) {
+            client.player.sendMessage(Text.translatable("message.spmega.qr.capture_failed"), false);
+            return;
+        }
+
+        try {
+            ScreenshotRecorder.takeScreenshot(client.getFramebuffer(), nativeImage -> {
+                try {
+                    if (nativeImage == null || nativeImage.getWidth() <= 0 || nativeImage.getHeight() <= 0) {
+                        client.execute(() -> {
+                            if (client.player != null) {
+                                notifications.show(Text.translatable("message.spmega.qr.capture_failed"));
+                            }
+                        });
+                        return;
+                    }
+
+                    String result = decodeQRCode(nativeImageToBufferedImage(nativeImage));
+                    client.execute(() -> {
+                        if (client.player == null) {
+                            return;
+                        }
+                        if (result == null) {
+                            notifications.show(Text.translatable("message.spmega.qr.not_found"));
+                            return;
+                        }
+
+                        Text clickableLink = Text.literal(result)
+                                .styled(style -> style.withInsertion(result));
+                        client.player.sendMessage(Text.translatable("message.spmega.qr.found_link", clickableLink), false);
+                        client.setScreen(new QRcodeAcceptScreen(result, client.currentScreen));
+                    });
+                } finally {
+                    if (nativeImage != null) {
+                        nativeImage.close();
+                    }
+                }
+            });
+        } catch (Exception ex) {
+            notifications.show(Text.translatable("message.spmega.qr.error"));
+        }
+    }
+
+    private static BufferedImage nativeImageToBufferedImage(NativeImage screenshot) {
+        BufferedImage bufferedImage = new BufferedImage(
+                screenshot.getWidth(),
+                screenshot.getHeight(),
+                BufferedImage.TYPE_INT_RGB
+        );
+
+        for (int y = 0; y < screenshot.getHeight(); y++) {
+            for (int x = 0; x < screenshot.getWidth(); x++) {
+                int color = screenshot.getColorArgb(x, y);
+                bufferedImage.setRGB(x, y, color);
+            }
+        }
+
+        return bufferedImage;
+    }
+
+    private static String decodeQRCode(BufferedImage image) {
+        Map<DecodeHintType, Object> hints = new EnumMap<>(DecodeHintType.class);
+        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
+        hints.put(DecodeHintType.POSSIBLE_FORMATS, Collections.singletonList(BarcodeFormat.QR_CODE));
+        hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
+        hints.put(DecodeHintType.ALSO_INVERTED, Boolean.TRUE);
+
+        LuminanceSource source = new RGBLuminanceSource(image.getWidth(), image.getHeight(), image.getRGB(0, 0, image.getWidth(), image.getHeight(), null, 0, image.getWidth()));
+
+        String result = tryDecodeWithStrategies(source, hints);
+
+        if (result == null) {
+            hints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
+            result = tryDecodeWithStrategies(source, hints);
+        }
+
+        return result;
+    }
+
+    private static String tryDecodeWithStrategies(LuminanceSource source, Map<DecodeHintType, Object> hints) {
+        try {
+            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
+            return new MultiFormatReader().decode(bitmap, hints).getText();
+        } catch (NotFoundException e) {
+        }
+
+        try {
+            BinaryBitmap bitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
+            return new MultiFormatReader().decode(bitmap, hints).getText();
+        } catch (NotFoundException e) {
+        }
+        try {
+            GenericMultipleBarcodeReader reader = new GenericMultipleBarcodeReader(new MultiFormatReader());
+            Result[] results = reader.decodeMultiple(new BinaryBitmap(new HybridBinarizer(source)), hints);
+            if (results.length > 0) {
+                return results[0].getText();
+            }
+        } catch (NotFoundException e) {
+        }
+
+        return null;
+    }
+}
+

src/client/java/git/yawaflua/tech/spmega/client/ui/AddCardScreen.java

@@ -67,7 +67,6 @@ public class AddCardScreen extends Screen {
         context.drawCenteredTextWithShadow(this.textRenderer, this.title, centerX, 24, 0xFFFFFF);
         context.drawTextWithShadow(this.textRenderer, Text.literal("Card ID (UUID):"), centerX - 140, startY - 10, 0xCCCCCC);
         context.drawTextWithShadow(this.textRenderer, Text.literal("Card Token:"), centerX - 140, startY + 18, 0xCCCCCC);
-        notifications.render(context, this.textRenderer, this.width, this.height);
     }
 
     private void submit() {

src/client/java/git/yawaflua/tech/spmega/client/ui/CardScreen.java

@@ -99,7 +99,6 @@ public class CardScreen extends Screen {
         context.drawCenteredTextWithShadow(this.textRenderer, this.title, centerX, 24, 0xFFFFFF);
         context.drawTextWithShadow(this.textRenderer, Text.literal("Список карт"), leftX, startY - 18, 0xBFBFBF);
         context.drawTextWithShadow(this.textRenderer, Text.literal("Действия"), rightX, startY - 18, 0xBFBFBF);
-        notifications.render(context, this.textRenderer, this.width, this.height);
     }
 
     private void updateCardButtonStates() {

src/client/java/git/yawaflua/tech/spmega/client/ui/MainBankScreen.java

@@ -1,11 +1,14 @@
 package git.yawaflua.tech.spmega.client.ui;
 
+import git.yawaflua.tech.spmega.client.qr.QRCodeScanner;
 import net.minecraft.client.MinecraftClient;
 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.awt.*;
+
 public class MainBankScreen extends Screen {
     private final Screen parent;
 
@@ -34,6 +37,11 @@ public class MainBankScreen extends Screen {
         this.addDrawableChild(ButtonWidget.builder(Text.literal("Закрыть"), button -> this.close())
                 .dimensions(startX + (buttonWidth + gap) * 2, y, buttonWidth, 20)
                 .build());
+
+        this.addDrawableChild(ButtonWidget.builder(Text.translatable("button.spmega.scan_qr"), button -> {
+            this.client.setScreen(null);
+            QRCodeScanner.ScanQrCode(this.client);
+        }).dimensions(centerX - 60, y + 28, 120, 20).build());
     }
 
     @Override
@@ -48,7 +56,7 @@ public class MainBankScreen extends Screen {
         super.render(context, mouseX, mouseY, delta);
 
         context.drawCenteredTextWithShadow(this.textRenderer, this.title, this.width / 2, 24, 0xFFFFFF);
-        context.drawCenteredTextWithShadow(this.textRenderer, Text.literal(greetingLine()), this.width / 2, 48, 0xFFD27F);
+        context.drawCenteredTextWithShadow(this.textRenderer, Text.literal(greetingLine()), this.width / 2, 48, Color.WHITE.getRGB());
     }
 
     private String greetingLine() {

src/client/java/git/yawaflua/tech/spmega/client/ui/PaymentScreen.java

@@ -189,7 +189,6 @@ public class PaymentScreen extends Screen {
         }
 
         context.drawCenteredTextWithShadow(this.textRenderer, senderCardText, centerX, this.height - 20, 0xA9E5A9);
-        notifications.render(context, this.textRenderer, this.width, this.height);
     }
 
     private void submit() {

src/client/java/git/yawaflua/tech/spmega/client/ui/QRcodeAcceptScreen.java

@@ -0,0 +1,70 @@
+package git.yawaflua.tech.spmega.client.ui;
+
+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 net.minecraft.util.Util;
+
+import java.net.URI;
+
+public class QRcodeAcceptScreen extends Screen {
+    private final String url;
+    private final Screen parent;
+
+    public QRcodeAcceptScreen(String url, Screen parent) {
+        super(Text.translatable("screen.spmega.qr.confirm_title"));
+        this.url = url;
+        this.parent = parent;
+    }
+
+    @Override
+    protected void init() {
+        this.addDrawableChild(ButtonWidget.builder(Text.translatable("button.spmega.qr.cancel"), button -> {
+            if (this.client != null) {
+                this.client.setScreen(parent);
+            }
+        }).dimensions(this.width / 2 - 155, this.height / 2 + 30, 150, 20).build());
+
+        this.addDrawableChild(ButtonWidget.builder(Text.translatable("button.spmega.qr.open_link"), button -> {
+            try {
+                Util.getOperatingSystem().open(new URI(url));
+            } catch (Exception exception) {
+                if (this.client != null && this.client.player != null) {
+                    this.client.player.sendMessage(Text.translatable("message.spmega.qr.failed_open"), false);
+                }
+            }
+            if (this.client != null) {
+                this.client.setScreen(parent);
+            }
+        }).dimensions(this.width / 2 + 5, this.height / 2 + 30, 150, 20).build());
+    }
+
+    @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);
+
+        context.drawCenteredTextWithShadow(
+                this.textRenderer,
+                Text.translatable("screen.spmega.qr.accept_link"),
+                this.width / 2,
+                this.height / 2 - 30,
+                0xFFFFFF
+        );
+        context.drawCenteredTextWithShadow(
+                this.textRenderer,
+                Text.literal(url),
+                this.width / 2,
+                this.height / 2 - 10,
+                0xFFD27F
+        );
+    }
+}
+

src/client/java/git/yawaflua/tech/spmega/client/ui/UiNotifications.java

@@ -12,11 +12,11 @@ import net.minecraft.text.Text;
 import java.awt.*;
 
 public final class UiNotifications {
-    private static final long DEFAULT_DURATION_MS = 3500L;
+    private static final int DEFAULT_DURATION_TICKS = 70;
     private static final UiNotifications INSTANCE = new UiNotifications();
 
     private Text currentText = Text.empty();
-    private long visibleUntilMs;
+    private int remainingTicks;
 
     private UiNotifications() {
     }
@@ -31,7 +31,6 @@ public final class UiNotifications {
         }
 
         try {
-            System.out.println(raw);
             var reader = new JsonReader(new java.io.StringReader(raw));
             reader.setStrictness(Strictness.LENIENT);
 
@@ -42,7 +41,6 @@ public final class UiNotifications {
             }
 
         } catch (Exception ignored) {
-            System.out.println(ignored.getMessage());
             // fallback to raw text
         }
 
@@ -54,7 +52,7 @@ public final class UiNotifications {
             return;
         }
         currentText = text;
-        visibleUntilMs = System.currentTimeMillis() + DEFAULT_DURATION_MS;
+        remainingTicks = DEFAULT_DURATION_TICKS;
     }
 
     public synchronized void showMessage(String message) {
@@ -65,10 +63,7 @@ public final class UiNotifications {
     }
 
     public synchronized void render(DrawContext context, TextRenderer textRenderer, int width, int height) {
-        if (currentText == null || currentText.getString().isBlank()) {
-            return;
-        }
-        if (System.currentTimeMillis() > visibleUntilMs) {
+        if (!isVisible()) {
             return;
         }
 
@@ -83,5 +78,20 @@ public final class UiNotifications {
         context.fill(x, y, x + boxWidth, y + boxHeight, Color.GRAY.getRGB());
         context.drawTextWithShadow(textRenderer, currentText, x + padding, y + padding, Color.WHITE.getRGB());
     }
+
+    public synchronized void tick() {
+        if (remainingTicks <= 0) {
+            return;
+        }
+        remainingTicks--;
+        if (remainingTicks <= 0) {
+            currentText = Text.empty();
+            remainingTicks = 0;
+        }
+    }
+
+    public synchronized boolean isVisible() {
+        return currentText != null && !currentText.getString().isBlank() && remainingTicks > 0;
+    }
 }
 

src/client/resources/assets/spmega/lang/en_us.json

@@ -1,5 +1,19 @@
 {
   "category.spmega": "SPMega",
-  "key.spmega.open_menu": "Open SPMega Menu"
+  "key.spmega.open_menu": "Open SPMega Menu",
+  "key.spmega.scan_qr": "Scan QR from Screen",
+  "button.spmega.scan_qr": "Scan QR",
+  "button.spmega.qr.cancel": "Cancel",
+  "button.spmega.qr.open_link": "Open Link",
+  "screen.spmega.qr.confirm_title": "Link confirmation",
+  "screen.spmega.qr.accept_link": "Open this link?",
+  "message.spmega.qr.capture_failed": "Failed to capture Minecraft screen",
+  "message.spmega.qr.not_found": "QR code not found on screen",
+  "message.spmega.qr.invalid_url": "QR does not contain a valid http/https URL",
+  "message.spmega.qr.opened": "Opened: %s",
+  "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"
 }
 

src/main/java/git/yawaflua/tech/spmega/ModConfig.java

@@ -1,7 +1,7 @@
 package git.yawaflua.tech.spmega;
 
 public record ModConfig(String apiDomain, String apiToken, boolean signQuickPayEnabled) {
-    public static final String DEFAULT_API_DOMAIN = "https://spworlds.ru";
+    public static final String DEFAULT_API_DOMAIN = "https://spmega-api.yawaflua.tech";
     public static final String DEFAULT_API_TOKEN = "ulBKE9MWEtIGiPAhXV69I28W9BRiSrV3";
     public static final boolean DEFAULT_SIGN_QUICK_PAY_ENABLED = true;
 

src/main/java/git/yawaflua/tech/spmega/api/SPWorldsApiClient.java

@@ -51,52 +51,72 @@ public final class SPWorldsApiClient {
     public CardInfo getCardInfo(CardAuth auth) throws IOException, InterruptedException {
         HttpRequest request = requestBuilder("/api/public/card", auth).GET().build();
         String body = send(request);
-        JsonObject json = JsonParser.parseString(body).getAsJsonObject();
-        long balance = json.has("balance") ? json.get("balance").getAsLong() : 0L;
-        String webhook = json.has("webhook") && !json.get("webhook").isJsonNull()
-                ? json.get("webhook").getAsString()
-                : "";
-        return new CardInfo(balance, webhook);
+        try {
+            JsonObject json = JsonParser.parseString(body).getAsJsonObject();
+            long balance = json.has("balance") ? json.get("balance").getAsLong() : 0L;
+            String webhook = json.has("webhook") && !json.get("webhook").isJsonNull()
+                    ? json.get("webhook").getAsString()
+                    : "";
+            return new CardInfo(balance, webhook);
+        } catch (Exception e) {
+            System.out.println("Failed to parse card info response: " + e.getMessage());
+            System.out.println(body);
+
+            throw new IOException("Failed to parse card info response", e);
+        }
     }
 
     public List<PlayerCard> getPlayerCards(String username, CardAuth auth) throws IOException, InterruptedException {
         HttpRequest request = requestBuilder("/api/public/accounts/" + username + "/cards", auth).GET().build();
         String body = send(request);
-        JsonArray json = JsonParser.parseString(body).getAsJsonArray();
+        try {
+            JsonArray json = JsonParser.parseString(body).getAsJsonArray();
 
-        List<PlayerCard> cards = new ArrayList<>();
-        for (JsonElement element : json) {
-            JsonObject card = element.getAsJsonObject();
-            String name = card.has("name") ? card.get("name").getAsString() : "";
-            String number = card.has("number") ? card.get("number").getAsString() : "";
-            cards.add(new PlayerCard(name, number));
+            List<PlayerCard> cards = new ArrayList<>();
+            for (JsonElement element : json) {
+                JsonObject card = element.getAsJsonObject();
+                String name = card.has("name") ? card.get("name").getAsString() : "";
+                String number = card.has("number") ? card.get("number").getAsString() : "";
+                cards.add(new PlayerCard(name, number));
+            }
+            return cards;
+        } catch (Exception e) {
+            System.out.println("Failed to parse player cards response: " + e.getMessage());
+            System.out.println(body);
+            throw new IOException("Failed to parse player cards response", e);
         }
-        return cards;
     }
 
     public AccountMe getAccountMe(CardAuth auth) throws IOException, InterruptedException {
         HttpRequest request = requestBuilder("/api/public/accounts/me", auth).GET().build();
         String body = send(request);
-        JsonObject json = JsonParser.parseString(body).getAsJsonObject();
+        try {
+            JsonObject json = JsonParser.parseString(body).getAsJsonObject();
 
-        String id = json.has("id") ? json.get("id").getAsString() : "";
-        String username = json.has("username") ? json.get("username").getAsString() : "";
-        String minecraftUuid = json.has("minecraftUUID") ? json.get("minecraftUUID").getAsString() : "";
+            String id = json.has("id") ? json.get("id").getAsString() : "";
+            String username = json.has("username") ? json.get("username").getAsString() : "";
+            String minecraftUuid = json.has("minecraftUUID") ? json.get("minecraftUUID").getAsString() : "";
 
-        List<AccountCard> cards = new ArrayList<>();
-        if (json.has("cards") && json.get("cards").isJsonArray()) {
-            for (JsonElement element : json.getAsJsonArray("cards")) {
-                JsonObject card = element.getAsJsonObject();
-                cards.add(new AccountCard(
-                        getString(card, "id"),
-                        getString(card, "name"),
-                        getString(card, "number"),
-                        card.has("color") && !card.get("color").isJsonNull() ? card.get("color").getAsInt() : 0
-                ));
+            List<AccountCard> cards = new ArrayList<>();
+            if (json.has("cards") && json.get("cards").isJsonArray()) {
+                for (JsonElement element : json.getAsJsonArray("cards")) {
+                    JsonObject card = element.getAsJsonObject();
+                    cards.add(new AccountCard(
+                            getString(card, "id"),
+                            getString(card, "name"),
+                            getString(card, "number"),
+                            card.has("color") && !card.get("color").isJsonNull() ? card.get("color").getAsInt() : 0
+                    ));
+                }
             }
-        }
 
-        return new AccountMe(id, username, minecraftUuid, cards);
+            return new AccountMe(id, username, minecraftUuid, cards);
+        } catch (Exception e) {
+            System.out.println("Failed to parse account info response: " + e.getMessage());
+            System.out.println(body);
+
+            throw new IOException("Failed to parse account info response", e);
+        }
     }
 
     public TransactionResult createTransaction(CardAuth auth, String receiver, long amount, String comment)
@@ -111,9 +131,17 @@ public final class SPWorldsApiClient {
                 .build();
 
         String body = send(request);
-        JsonObject json = JsonParser.parseString(body).getAsJsonObject();
-        long balance = json.has("balance") ? json.get("balance").getAsLong() : 0L;
-        return new TransactionResult(balance);
+        try {
+            JsonObject json = JsonParser.parseString(body).getAsJsonObject();
+
+            long balance = json.has("balance") ? json.get("balance").getAsLong() : 0L;
+            return new TransactionResult(balance);
+        } catch (Exception exception) {
+            System.out.println("Failed to parse transaction response: " + exception.getMessage());
+            System.out.println(body);
+
+            throw new IOException("Failed to parse transaction response", exception);
+        }
     }
 
     private HttpRequest.Builder requestBuilder(String path, CardAuth auth) {