Add loader-style smever format MC versions

build.gradle

@@ -18,13 +18,19 @@ archivesBaseName = "fabric-meta"
 
 repositories {
     mavenCentral()
+	maven {
+		name = 'Fabric'
+		url = 'https://maven.fabricmc.net/'
+	}
 }
 
 dependencies {
 	implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.6'
-	implementation group: 'io.javalin', name: 'javalin', version: '3.13.3'
+	implementation group: 'io.javalin', name: 'javalin', version: '3.8.0'
 	implementation group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.30'
-	implementation group: 'commons-io', name: 'commons-io', version: '2.8.0'
+	implementation group: 'commons-io', name: 'commons-io', version: '2.6'
+	implementation group: 'net.fabricmc', name: 'fabric-loader', version: '0.11.3'
+	implementation group: 'org.ow2.asm', name: 'asm', version: '7.0'
 }
 
 jar {

src/main/java/net/fabricmc/meta/data/VersionDatabase.java

@@ -16,6 +16,7 @@
 
 package net.fabricmc.meta.data;
 
+import net.fabricmc.loader.minecraft.McVersionLookup;
 import net.fabricmc.meta.utils.MinecraftLauncherMeta;
 import net.fabricmc.meta.utils.PomParser;
 import net.fabricmc.meta.web.models.*;
@@ -25,7 +26,6 @@
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
-import java.util.stream.Collectors;
 
 public class VersionDatabase {
 
@@ -86,7 +86,17 @@ private void loadMcData() throws IOException {
 			return 0;
 		});
 
-		game = minecraftVersions.stream().map(s -> new BaseVersion(s, launcherMeta.isStable(s))).collect(Collectors.toList());
+		game = getGameVersion(minecraftVersions, launcherMeta);
+	}
+
+	private List<BaseVersion> getGameVersion(List<String> minecraftVersions, MinecraftLauncherMeta launcherMeta) {
+		List<BaseVersion> game = new ArrayList<>();
+		for (String s : minecraftVersions) {
+			game.add(new MinecraftVersion(s, launcherMeta.isStable(s),
+					McVersionLookup.getVersion(s).normalized));
+		}
+
+		return game;
 	}
 
 }

src/main/java/net/fabricmc/meta/utils/MinecraftLauncherMeta.java

@@ -28,6 +28,7 @@
 public class MinecraftLauncherMeta {
 
 	public static final Gson GSON = new GsonBuilder().create();
+	public static String json = "";
 
 	List<Version> versions;
 
@@ -36,14 +37,21 @@ private MinecraftLauncherMeta() {
 
 	public static MinecraftLauncherMeta getMeta() throws IOException {
 		String url = "https://launchermeta.mojang.com/mc/game/version_manifest.json";
-		String json = IOUtils.toString(new URL(url), StandardCharsets.UTF_8);
+		if (json.isEmpty()) json = IOUtils.toString(new URL(url), StandardCharsets.UTF_8);
 		return GSON.fromJson(json, MinecraftLauncherMeta.class);
 	}
 
 	public boolean isStable(String id) {
 		return versions.stream().anyMatch(version -> version.id.equals(id) && version.type.equals("release"));
 	}
 
+	public String majorVersion(String id) {
+		for (Version version : versions) {
+			if (version.id.equals(id)) return version.getTargetVersion();
+		}
+		return "";
+	}
+
 	public int getIndex(String version){
 		for (int i = 0; i < versions.size(); i++) {
 			if(versions.get(i).id.equals(version)){
@@ -80,6 +88,26 @@ public String getTime() {
 		public String getReleaseTime() {
 			return releaseTime;
 		}
+
+		public String getTargetVersion() {
+			String json = null;
+			try {
+				json = IOUtils.toString(new URL(url), StandardCharsets.UTF_8);
+				return GSON.fromJson(json, Meta.class).getAssets();
+			} catch (IOException e) {
+				e.printStackTrace();
+				return "";
+			}
+		}
+	}
+
+	public static class Meta {
+
+		String assets;
+
+		public String getAssets() {
+			return assets;
+		}
 	}
 
 }

src/main/java/net/fabricmc/meta/web/EndpointsV2.java

@@ -39,6 +39,7 @@ public static void setup() {
 		WebServer.jsonGet("/v2/versions", () -> FabricMeta.database);
 
 		WebServer.jsonGet("/v2/versions/game", () -> FabricMeta.database.game);
+		WebServer.jsonGet("/v2/versions/game/:game_version", context -> filter(context, FabricMeta.database.game));
 		WebServer.jsonGet("/v2/versions/game/yarn", () -> compatibleGameVersions(FabricMeta.database.mappings, MavenBuildGameVersion::getGameVersion, v -> new BaseVersion(v.getGameVersion(), v.isStable())));
 		WebServer.jsonGet("/v2/versions/game/intermediary", () -> compatibleGameVersions(FabricMeta.database.intermediary, BaseVersion::getVersion, v -> new BaseVersion(v.getVersion(), v.isStable())));
 

src/main/java/net/fabricmc/meta/web/models/MinecraftVersion.java

@@ -0,0 +1,14 @@
+package net.fabricmc.meta.web.models;
+
+public class MinecraftVersion extends BaseVersion{
+    String semver;
+
+    public MinecraftVersion(String version, boolean stable, String semver) {
+        super(version, stable);
+        this.semver = semver;
+    }
+
+    public String getSemver() {
+        return semver;
+    }
+}