Add provided update checkers, loader update checkers

src/main/java/com/terraformersmc/modmenu/ModMenu.java

@@ -70,6 +70,8 @@ public void onInitializeClient() {
 		ModMenuConfigManager.initializeConfig();
 		Set<String> modpackMods = new HashSet<>();
 		Map<String, UpdateChecker> updateCheckers = new HashMap<>();
+		Map<String, UpdateChecker> providedUpdateCheckers = new HashMap<>();
+
 		FabricLoader.getInstance().getEntrypointContainers("modmenu", ModMenuApi.class).forEach(entrypoint -> {
 			ModMetadata metadata = entrypoint.getProvider().getMetadata();
 			String modId = metadata.getId();
@@ -78,6 +80,7 @@ public void onInitializeClient() {
 				configScreenFactories.put(modId, api.getModConfigScreenFactory());
 				apiImplementations.add(api);
 				updateCheckers.put(modId, api.getUpdateChecker());
+				providedUpdateCheckers.putAll(api.getProvidedUpdateCheckers());
 				api.attachModpackBadges(modpackMods::add);
 			} catch (Throwable e) {
 				LOGGER.error("Mod {} provides a broken implementation of ModMenuApi", modId, e);
@@ -94,9 +97,14 @@ public void onInitializeClient() {
 				mod = new FabricMod(modContainer, modpackMods);
 			}
 
-			mod.setUpdateChecker(updateCheckers.get(mod.getId()));
+			var updateChecker = updateCheckers.get(mod.getId());
+
+			if (updateChecker == null) {
+				updateChecker = providedUpdateCheckers.get(mod.getId());
+			}
 
 			MODS.put(mod.getId(), mod);
+			mod.setUpdateChecker(updateChecker);
 		}
 
 		checkForUpdates();

src/main/java/com/terraformersmc/modmenu/ModMenuModMenuCompat.java

@@ -1,23 +1,34 @@
 package com.terraformersmc.modmenu;
 
-import com.google.common.collect.ImmutableMap;
 import com.terraformersmc.modmenu.api.ConfigScreenFactory;
 import com.terraformersmc.modmenu.api.ModMenuApi;
+import com.terraformersmc.modmenu.api.UpdateChecker;
 import com.terraformersmc.modmenu.gui.ModMenuOptionsScreen;
+import com.terraformersmc.modmenu.util.mod.fabric.FabricLoaderUpdateChecker;
+import com.terraformersmc.modmenu.util.mod.quilt.QuiltLoaderUpdateChecker;
+
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.gui.screen.option.OptionsScreen;
 
 import java.util.Map;
 
 public class ModMenuModMenuCompat implements ModMenuApi {
-
 	@Override
 	public ConfigScreenFactory<?> getModConfigScreenFactory() {
 		return ModMenuOptionsScreen::new;
 	}
 
 	@Override
 	public Map<String, ConfigScreenFactory<?>> getProvidedConfigScreenFactories() {
-		return ImmutableMap.of("minecraft", parent -> new OptionsScreen(parent, MinecraftClient.getInstance().options));
+		return Map.of("minecraft", parent -> new OptionsScreen(parent, MinecraftClient.getInstance().options));
+	}
+
+	@Override
+	public Map<String, UpdateChecker> getProvidedUpdateCheckers() {
+		if (ModMenu.runningQuilt) {
+			return Map.of("quilt_loader", new QuiltLoaderUpdateChecker());
+		} else {
+			return Map.of("fabricloader", new FabricLoaderUpdateChecker());
+		}
 	}
 }

src/main/java/com/terraformersmc/modmenu/api/ModMenuApi.java

@@ -1,6 +1,5 @@
 package com.terraformersmc.modmenu.api;
 
-import com.google.common.collect.ImmutableMap;
 import com.terraformersmc.modmenu.ModMenu;
 import com.terraformersmc.modmenu.gui.ModsScreen;
 import net.minecraft.client.gui.screen.Screen;
@@ -66,7 +65,17 @@ default UpdateChecker getUpdateChecker() {
 	 * @return a map of mod ids to screen factories.
 	 */
 	default Map<String, ConfigScreenFactory<?>> getProvidedConfigScreenFactories() {
-		return ImmutableMap.of();
+		return Map.of();
+	}
+
+	/**
+	 * Used to provide update checkers for other mods. A mod registering its own
+	 * update checker will take priority over any provided ones should both exist.
+	 *
+	 * @return a map of mod ids to update checkers.
+	 */
+	default Map<String, UpdateChecker> getProvidedUpdateCheckers() {
+		return Map.of();
 	}
 
 	/**

src/main/java/com/terraformersmc/modmenu/util/HttpUtil.java

@@ -0,0 +1,44 @@
+package com.terraformersmc.modmenu.util;
+
+import java.io.IOException;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+
+import com.terraformersmc.modmenu.ModMenu;
+
+import net.fabricmc.loader.api.FabricLoader;
+import net.minecraft.SharedConstants;
+
+public class HttpUtil {
+	private static final String USER_AGENT = buildUserAgent();
+	private static final HttpClient HTTP_CLIENT = HttpClient.newHttpClient();
+
+	private HttpUtil() {}
+
+	public static <T> HttpResponse<T> request(HttpRequest.Builder builder, HttpResponse.BodyHandler<T> handler) throws IOException, InterruptedException {
+		builder.setHeader("User-Agent", USER_AGENT);
+		return HTTP_CLIENT.send(builder.build(), handler);
+    }
+
+	private static String buildUserAgent() {
+		String env = ModMenu.devEnvironment ? "/development" : "";
+		String loader = ModMenu.runningQuilt ? "quilt" : "fabric";
+
+		var modMenuVersion = getModMenuVersion();
+		var minecraftVersion = SharedConstants.getGameVersion().getName();
+
+		// -> TerraformersMC/ModMenu/9.1.0 (1.20.3/quilt/development)
+		return "%s/%s (%s/%s%s)".formatted(ModMenu.GITHUB_REF, modMenuVersion, minecraftVersion, loader, env);
+	}
+
+	private static String getModMenuVersion() {
+		var container = FabricLoader.getInstance().getModContainer(ModMenu.MOD_ID);
+
+		if (container.isEmpty()) {
+			throw new RuntimeException("Unable to find Modmenu's own mod container!");
+		}
+
+		return VersionUtil.removeBuildMetadata(container.get().getMetadata().getVersion().getFriendlyString());
+	}
+}

src/main/java/com/terraformersmc/modmenu/util/JsonUtil.java

@@ -0,0 +1,38 @@
+package com.terraformersmc.modmenu.util;
+
+import java.util.Optional;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+
+public class JsonUtil {
+	private JsonUtil() {}
+
+	public static Optional<String> getString(JsonObject parent, String field) {
+		if (!parent.has(field)) {
+			return Optional.empty();
+		}
+
+		var value = parent.get(field);
+
+		if (!value.isJsonPrimitive() || !((JsonPrimitive)value).isString()) {
+			return Optional.empty();
+		}
+
+		return Optional.of(value.getAsString());
+	}
+
+	public static Optional<Boolean> getBoolean(JsonObject parent, String field) {
+		if (!parent.has(field)) {
+			return Optional.empty();
+		}
+
+		var value = parent.get(field);
+
+		if (!value.isJsonPrimitive() || !((JsonPrimitive)value).isBoolean()) {
+			return Optional.empty();
+		}
+
+		return Optional.of(value.getAsBoolean());
+	}
+}

src/main/java/com/terraformersmc/modmenu/util/UpdateCheckerUtil.java

@@ -15,20 +15,19 @@
 import net.minecraft.client.toast.SystemToast;
 import net.minecraft.text.Text;
 import net.minecraft.util.Util;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 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.*;
 
 public class UpdateCheckerUtil {
 	public static final Logger LOGGER = LoggerFactory.getLogger("Mod Menu/Update Checker");
 
-	private static final HttpClient client = HttpClient.newHttpClient();
 	private static boolean modrinthApiV2Deprecated = false;
 
 	private static boolean allowsUpdateChecks(Mod mod) {
@@ -48,10 +47,21 @@ public static void checkForUpdates() {
 	public static void checkForCustomUpdates() {
 		ModMenu.MODS.values().stream().filter(UpdateCheckerUtil::allowsUpdateChecks).forEach(mod -> {
 			UpdateChecker updateChecker = mod.getUpdateChecker();
+
 			if (updateChecker == null) {
 				return;
 			}
-			UpdateCheckerThread.run(mod, () -> mod.setUpdateInfo(updateChecker.checkForUpdates()));
+
+			UpdateCheckerThread.run(mod, () -> {
+				var update = updateChecker.checkForUpdates();
+
+				if (update == null) {
+					return;
+				}
+
+				mod.setUpdateInfo(update);
+				LOGGER.info("Update available for '{}@{}'", mod.getId(), mod.getVersion());
+			});
 		});
 	}
 
@@ -77,15 +87,8 @@ public static void checkForModrinthUpdates() {
 			}
 		});
 
-		String environment = ModMenu.devEnvironment ? "/development" : "";
-		String primaryLoader = ModMenu.runningQuilt ? "quilt" : "fabric";
-		List<String> loaders = ModMenu.runningQuilt ? List.of("fabric", "quilt") : List.of("fabric");
-
 		String mcVer = SharedConstants.getGameVersion().getName();
-		String version = FabricLoader.getInstance().getModContainer(ModMenu.MOD_ID)
-				.get().getMetadata().getVersion().getFriendlyString();
-		final var modMenuVersion = version.split("\\+", 2)[0]; // Strip build metadata for privacy
-		final var userAgent = "%s/%s (%s/%s%s)".formatted(ModMenu.GITHUB_REF, modMenuVersion, mcVer, primaryLoader, environment);
+		List<String> loaders = ModMenu.runningQuilt ? List.of("fabric", "quilt") : List.of("fabric");
 
 		List<UpdateChannel> updateChannels;
 		UpdateChannel preferredChannel = UpdateChannel.getUserPreference();
@@ -100,20 +103,17 @@ public static void checkForModrinthUpdates() {
 
 		String body = ModMenu.GSON_MINIFIED.toJson(new LatestVersionsFromHashesBody(modHashes.keySet(), loaders, mcVer, updateChannels));
 
-		LOGGER.debug("User agent: " + userAgent);
-		LOGGER.debug("Body: " + body);
+		LOGGER.debug("Body: {}", body);
 		var latestVersionsRequest = HttpRequest.newBuilder()
 			.POST(HttpRequest.BodyPublishers.ofString(body))
-			.header("User-Agent", userAgent)
 			.header("Content-Type", "application/json")
-			.uri(URI.create("https://api.modrinth.com/v2/version_files/update"))
-			.build();
+			.uri(URI.create("https://api.modrinth.com/v2/version_files/update"));
 
 		try {
-			var latestVersionsResponse = client.send(latestVersionsRequest, HttpResponse.BodyHandlers.ofString());
+			var latestVersionsResponse = HttpUtil.request(latestVersionsRequest, HttpResponse.BodyHandlers.ofString());
 
 			int status = latestVersionsResponse.statusCode();
-			LOGGER.debug("Status: " + status);
+			LOGGER.debug("Status: {}", status);
 			if (status == 410) {
 				modrinthApiV2Deprecated = true;
 				LOGGER.warn("Modrinth API v2 is deprecated, unable to check for mod updates.");

src/main/java/com/terraformersmc/modmenu/util/VersionUtil.java

@@ -5,9 +5,7 @@
 public final class VersionUtil {
 	private static final List<String> PREFIXES = List.of("version", "ver", "v");
 
-	private VersionUtil() {
-		return;
-	}
+	private VersionUtil() {}
 
 	public static String stripPrefix(String version) {
 		version = version.trim();
@@ -24,4 +22,8 @@ public static String stripPrefix(String version) {
 	public static String getPrefixedVersion(String version) {
 		return "v" + stripPrefix(version);
 	}
+
+	public static String removeBuildMetadata(String version) {
+		return version.split("\\+")[0];
+	}
 }