Export generated pack into ZIP-file

src/main/java/org/geysermc/rainbow/CodecUtil.java

@@ -14,9 +14,14 @@ import org.joml.Vector3f;
 import org.joml.Vector3fc;
 
 import java.io.IOException;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.util.Map;
 import java.util.function.Supplier;
+import java.util.stream.Stream;
 
 public class CodecUtil {
     // It's fine to cast to mutable here since codecs won't change the data
@@ -64,6 +69,28 @@ public class CodecUtil {
         }
     }
 
+    public static void tryZipDirectory(Path directory, Path output) throws IOException {
+        try (FileSystem zip = FileSystems.newFileSystem(output, Map.of("create", "true"))) {
+            try (Stream<Path> paths = Files.walk(directory)) {
+                paths.forEach(path -> {
+                    try {
+                        Path inZip = zip.getPath(String.valueOf(directory.relativize(path)));
+                        if (Files.isDirectory(path)) {
+                            Files.createDirectories(inZip);
+                        } else {
+                            Files.copy(path, inZip, StandardCopyOption.REPLACE_EXISTING);
+                        }
+                    } catch (IOException exception) {
+                        Rainbow.LOGGER.warn("Failed to copy contents from {} to ZIP-file {}!", path, output, exception);
+                    }
+                });
+            }
+        } catch (IOException exception) {
+            Rainbow.LOGGER.warn("Failed to write ZIP-file {}!", output, exception);
+            throw exception;
+        }
+    }
+
     public static void ensureDirectoryExists(Path directory) throws IOException {
         if (!Files.isDirectory(directory)) {
             try {

src/main/java/org/geysermc/rainbow/pack/BedrockPack.java

@@ -12,6 +12,7 @@ import net.minecraft.world.item.ItemStack;
 import org.apache.commons.io.IOUtils;
 import org.geysermc.rainbow.CodecUtil;
 import org.geysermc.rainbow.PackConstants;
+import org.geysermc.rainbow.Rainbow;
 import org.geysermc.rainbow.mapping.BedrockItemMapper;
 import org.geysermc.rainbow.mapping.geyser.GeyserMappings;
 import org.geysermc.rainbow.mixin.SplashRendererAccessor;
@@ -38,7 +39,7 @@ public class BedrockPack {
             "meow", "we'll be done here soon™", "got anything else to say?", "we're done now!", "this will be fixed by v6053", "expect it to be done within 180 business days!");
     private static final RandomSource RANDOM = RandomSource.create();
 
-    private static final Path EXPORT_DIRECTORY = FabricLoader.getInstance().getGameDir().resolve("rainbow");
+    private static final Path EXPORT_DIRECTORY = FabricLoader.getInstance().getGameDir().resolve(Rainbow.MOD_ID);
     private static final Path PACK_DIRECTORY = Path.of("pack");
     private static final Path ATTACHABLES_DIRECTORY = Path.of("attachables");
     private static final Path GEOMETRY_DIRECTORY = Path.of("models/entity");
@@ -48,6 +49,7 @@ public class BedrockPack {
     private static final Path MANIFEST_FILE = Path.of("manifest.json");
     private static final Path ITEM_ATLAS_FILE = Path.of("textures/item_texture.json");
 
+    private static final Path PACK_ZIP_FILE = Path.of("pack.zip");
     private static final Path REPORT_FILE = Path.of("report.txt");
 
     private final String name;
@@ -155,6 +157,12 @@ public class BedrockPack {
             }
         }
 
+        try {
+            CodecUtil.tryZipDirectory(packPath, exportPath.resolve(PACK_ZIP_FILE));
+        } catch (IOException exception) {
+            success = false;
+        }
+
         try {
             Files.writeString(exportPath.resolve(REPORT_FILE), createPackSummary());
         } catch (IOException exception) {