add load order configuration

Author: Commander07

README.md

@@ -1,13 +1,21 @@
 # Data Loader
 
-For more info visit the modrinth [page](https://modrinth.com/mod/dataloader).
+This mod adds a `datapacks` folder inside your game directory where you can put datapacks that will apply to all worlds.
+
+## Configuration
+
+Unlike sargunv's original mod, this port has a completely optional load order configuration located in `config/data-loader.json`.
+<br><br><br>
+`onlyLoadSpecified`: When set to true Minecraft will only load the datapacks in the `loadOrder` list and the fabric datapack. Unless the vanilla datapack or a suitable replacement is provided the game will crash upon launch.
+
+`loadOrder`: Minecraft will load the datapacks in the order specified in this list. Datapacks in the ´datapacks´ folder needs to be prefixed with ´file/´, the `vanilla`, `fabric` and experimental datapacks don't need to be prefixed with anything.
 
 ## Setup
 
 For setup instructions please see the [fabric wiki page](https://fabricmc.net/wiki/tutorial:setup) that relates to the IDE that you are using.
 
 ## License
 
-Data loader is a port of [Sargun Vohra's Data Loader](https://gitlab.com/sargunv-mc-mods/data-loader/-/tree/1.16) for 1.18.x, Which is licensed under [Apache License 2.0](https://gitlab.com/sargunv-mc-mods/data-loader/-/blob/1.16/LICENSE)
+Data loader started as port of [Sargun Vohra's Data Loader](https://gitlab.com/sargunv-mc-mods/data-loader/-/tree/1.16) for 1.18.x, Which is licensed under [Apache License 2.0](https://gitlab.com/sargunv-mc-mods/data-loader/-/blob/1.16/LICENSE)
 
 Data Loader is built on top of [FabricMC's Example mod](https://github.com/FabricMC/fabric-example-mod) which is licensed under [CC0-1.0](https://github.com/FabricMC/fabric-example-mod/blob/1.18/LICENSE)

src/main/java/dataloader/Config.java

@@ -0,0 +1,26 @@
+package dataloader;
+
+import com.google.gson.Gson;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.ArrayList;
+
+public class Config {
+    private static final Gson gson = new Gson();
+    public Boolean onlyLoadSpecified = false;
+    public ArrayList<String> loadOrder = new ArrayList<>();
+
+    public static Config load() throws IOException {
+        Config config;
+        if (Files.isRegularFile(DataLoader.CONFIG_PATH)) {
+            config = gson.fromJson(new String(Files.readAllBytes(DataLoader.CONFIG_PATH)), Config.class);
+        } else {
+            config = new Config();
+            Files.createDirectories(DataLoader.CONFIG_PATH.getParent());
+            Files.createFile(DataLoader.CONFIG_PATH);
+            Files.write(DataLoader.CONFIG_PATH, gson.toJson(config).getBytes());
+        }
+        return config;
+    }
+}

src/main/java/dataloader/DataLoader.java

@@ -16,24 +16,25 @@
 public class DataLoader implements ModInitializer {
 	public static UnaryOperator<Text> getSourceTextSupplier(String translationKey) {
 		Text text = Text.translatable(translationKey);
-		return (name) -> {
-			return Text.translatable("pack.nameAndSource", new Object[]{name, text}).formatted(Formatting.GRAY);
-		};
+		return (name) -> Text.translatable("pack.nameAndSource", name, text).formatted(Formatting.GRAY);
 	}
 
 	public static final ResourcePackSource RESOURCE_PACK_SOURCE = ResourcePackSource.create(getSourceTextSupplier("pack.source.dataloader"), true);
 	public static final Path DATAPACKS_PATH = FabricLoader.getInstance().getGameDir().resolve("datapacks");
-	public static final Logger LOGGER = LogManager.getLogger("dataloader");
+	public static final Path CONFIG_PATH = FabricLoader.getInstance().getConfigDir().resolve("data-loader.json");
+	public static final Logger LOGGER = LogManager.getLogger("data-loader");
+	public static Config CONFIG;
 
 	@Override
 	public void onInitialize() {
 		try {
+			CONFIG = Config.load();
 			Path path = DATAPACKS_PATH;
 			if (!Files.exists(path)) {
 				Files.createDirectory(path);
 			}
 		} catch (IOException e) {
-			e.printStackTrace();
+			LOGGER.error("Failed to initialize data loader: ", e);
 		}
 
 	}

src/main/java/dataloader/mixin/MinecraftServerMixin.java

@@ -1,5 +1,6 @@
 package dataloader.mixin;
 
+import com.google.common.collect.ImmutableSet;
 import dataloader.DataLoader;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.resource.*;
@@ -10,6 +11,8 @@
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
+import java.util.ArrayList;
+
 @Mixin(value = MinecraftServer.class, priority = 1001)
 public class MinecraftServerMixin {
 	@Inject(method = "loadDataPacks", at = @At("HEAD"))
@@ -26,4 +29,18 @@ private static void loadDataPacks(
 		);
 	}
 
+	@Inject(method = "createDataPackSettings", at = @At("HEAD"))
+	private static void createDataPackSettings(ResourcePackManager dataPackManager, CallbackInfoReturnable<DataPackSettings> cir) {
+		ArrayList<String> enabledPacks = new ArrayList<>();
+		if (!DataLoader.CONFIG.onlyLoadSpecified)
+			enabledPacks.addAll(
+					dataPackManager.getEnabledNames().stream().filter(x -> !DataLoader.CONFIG.loadOrder.contains(x)).collect(ImmutableSet.toImmutableSet())
+			);
+		else if (!DataLoader.CONFIG.loadOrder.contains("fabric"))
+			enabledPacks.add("fabric");
+		enabledPacks.addAll(DataLoader.CONFIG.loadOrder);
+
+		DataLoader.LOGGER.info("Applying datapacks: {}", enabledPacks);
+		dataPackManager.setEnabledProfiles(enabledPacks);
+	}
 }

src/main/resources/fabric.mod.json

@@ -12,7 +12,7 @@
     "sources": "https://github.com/Commander07/data-loader",
     "issues": "https://github.com/Commander07/data-loader/issues"
   },
-  "license": "CC0-1.0",
+  "license": "Apache-2.0",
   "icon": "assets/dataloader/icon.png",
   "environment": "*",
   "entrypoints": {