setup basic web server

Author: xFN10x

src/main/java/fn10/smm/ModManager.java

@@ -1,16 +1,18 @@
 package fn10.smm;
 
+import com.mojang.logging.LogUtils;
 import net.fabricmc.api.ModInitializer;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
 import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public class ModManager implements ModInitializer {
 
-    public static final Logger LOG = LoggerFactory.getLogger("ServerModManager");
+    public static final Logger LOG = LogUtils.getLogger();
 
     @Override
     public void onInitialize() {
         LOG.info("ServerModManager initializing...");
 
+        CommandRegistrationCallback.EVENT.register(new ModManagerCommands());
     }
 }

src/main/java/fn10/smm/ModManagerCommands.java

@@ -0,0 +1,54 @@
+package fn10.smm;
+
+import com.mojang.brigadier.Command;
+import com.mojang.brigadier.CommandDispatcher;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.minecraft.commands.CommandBuildContext;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.commands.Commands;
+import net.minecraft.network.chat.Component;
+import net.minecraft.server.permissions.Permissions;
+
+public class ModManagerCommands implements CommandRegistrationCallback {
+
+    private static ModManagerWebServer currentServer;
+
+    public static final Command<CommandSourceStack> startCommand = css -> {
+        final CommandSourceStack src = css.getSource();
+        Integer port = 8880;
+        try {
+            port = css.getArgument("port", Integer.class);
+        } catch (Exception ignored) {
+        }
+        src.sendSystemMessage(Component.literal("Starting web server at port: " + port));
+        if (ModManagerWebServer.isServerRunning()) {
+            src.sendFailure(Component.literal("Failed to start web server. See log for details."));
+            return 1;
+        } else {
+           try {
+                currentServer = new ModManagerWebServer(port);
+                currentServer.start();
+               src.sendSystemMessage(Component.literal("Server started at localhost:" + port));
+            } catch (Exception e) {
+               src.sendFailure(Component.literal("Failed to start web server. See log for details."));
+           }
+        }
+        return 1;
+    };
+
+    @Override
+    public void register(CommandDispatcher<CommandSourceStack> dispatcher, CommandBuildContext registryAccess, Commands.CommandSelection environment) {
+        dispatcher.register(
+                Commands.literal("servermodman")
+                        .executes(css -> {
+                            css.getSource().sendSystemMessage(Component.literal("-------- Server Mod Manager --------"));
+                            css.getSource().sendSystemMessage(Component.literal("--------     By xFN10x    --------"));
+                            return 1;
+                        }).then(
+                                Commands.literal("start")
+                                        .requires(src -> src.permissions().hasPermission(Permissions.COMMANDS_ADMIN))
+                                        .executes(startCommand)
+                        )
+        );
+    }
+}

src/main/java/fn10/smm/ModManagerWebServer.java

@@ -0,0 +1,49 @@
+package fn10.smm;
+
+import net.freeutils.httpserver.HTTPServer;
+
+import java.net.http.HttpClient;
+import java.nio.charset.StandardCharsets;
+
+import static fn10.smm.ModManager.LOG;
+
+public class ModManagerWebServer {
+
+    public final int port;
+    public final HTTPServer server;
+    private HttpClient client = null;
+    private static boolean webServerRunning;
+
+    public HttpClient getClient() {
+        return client;
+    }
+
+    public static boolean isServerRunning() {return webServerRunning;}
+
+    public ModManagerWebServer(int port) {
+        this.port = port;
+        this.server = new HTTPServer();
+        server.setPort(this.port);
+    }
+
+    public void start() throws Exception {
+        try {
+            LOG.info("Starting web server...");
+
+            server.start();
+            client = HttpClient.newBuilder().version(HttpClient.Version.HTTP_2).build();
+
+            final HTTPServer.VirtualHost host = server.getVirtualHost(null);
+            host.addContext("/", (req, resp) -> {
+                resp.getBody().write("yo, world".getBytes(StandardCharsets.UTF_8));
+                resp.send(200, "where is this");
+                return 0;
+            });
+            LOG.info("Started web server at: {}", port);
+            webServerRunning = true;
+        } catch (Exception e) {
+            LOG.error("Failed to start web server", e);
+            throw e;
+        }
+    }
+}