adds forge support, fixes some critical errors

routes/api/forge/index.ts

@@ -0,0 +1,78 @@
+import { Handlers } from "$fresh/server.ts";
+import { SERVER_STATE } from "../../../state/serverState.ts";
+import { downloadFile } from "../../../util/download.ts";
+import { getForgeDownload } from "../../../util/forge.ts";
+import { getGameVersions } from "../../../util/gameVersions.ts";
+
+export const handler: Handlers = {
+  async GET(_req, _ctx) {
+    const gameVersions = await getGameVersions();
+
+    return new Response(JSON.stringify({
+      gameVersions,
+    }));
+  },
+  async POST(req, _ctx) {
+    try {
+      const data = await req.formData();
+
+      // TODO: update for instances
+      await downloadFile(
+        await getForgeDownload(data.get("game") as string || "1.20.1"),
+        "./server/installer.jar",
+      );
+
+      const installer = new Deno.Command("java", {
+        args: [
+          "-Xmx2G",
+          "-jar",
+          "./installer.jar",
+          "--installServer",
+        ],
+        stderr: "piped",
+        stdout: "piped",
+        cwd: "./server",
+      });
+
+      // const process = installer.spawn();
+      // process.stderr.pipeTo(Deno.stderr.writable);
+      // process.stdout.pipeTo(Deno.stdout.writable);
+
+      const { success } = await installer.output();
+
+      if (!success) throw "failed to install forge server";
+
+      const argFile = "./server/user_jvm_args.txt";
+      const jvmArgs = await Deno.readTextFile(argFile);
+      const memArgRx = /^(#\s)?(-Xmx)(.+)$/m;
+      await Deno.writeTextFile(
+        argFile,
+        jvmArgs.replace(
+          memArgRx,
+          jvmArgs.match(memArgRx)?.at(0)?.replace(/#\s?/, "") || "-Xmx4G",
+        ),
+      );
+
+      const runFiles = ["./server/run.sh", "./server/run.bat"];
+
+      for (const runFile of runFiles) {
+        const file = (await Deno.readTextFile(runFile))
+          .replace("_args.txt", (e) => e + " nogui");
+
+        await Deno.writeTextFile(runFile, file);
+      }
+
+      SERVER_STATE.serverType = "forge";
+
+      await SERVER_STATE.startMCServer();
+
+      const url = new URL(req.url);
+
+      return Response.redirect(url.origin + "/setup/eula", 303);
+      // return Response.redirect(url.origin + "/terminal", 303);
+    } catch (e) {
+      console.log(e);
+      return new Response("Something bad happened", { status: 500 });
+    }
+  },
+};