server state and stdio streaming

util/EULA.ts

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+const eulaRegex = /(eula=false)/;
+export const checkEULA = (instance = 'server') => 
+ !eulaRegex.test(Deno.readTextFileSync(`./${instance}/eula.txt`));
+
+
+export const acceptEULA = (instance = 'server') => {
+  const eula = Deno.readTextFileSync(`./${instance}/eula.txt`);
+  const mod = eula.replace(eulaRegex, 'eula=true');
+  console.log(mod)
+  Deno.writeTextFileSync(`./${instance}/eula.txt`, mod);
+}

util/initFabric.ts

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+export async function initFabric() {
+  const fabricHost = "https://meta.fabricmc.net/v2";
+
+  const gameVersionSlug = "/versions/game";
+  const loaderVersionSlug = "/versions/loader";
+  const installerVersionSlug = "/versions/installer";
+  const versionSlugs = [
+    gameVersionSlug,
+    loaderVersionSlug,
+    installerVersionSlug,
+  ];
+
+  for (const slug of versionSlugs) {
+    const uri = fabricHost + slug;
+
+    const req = await fetch(uri);
+    const text = await req.text();
+
+    const path = `./fabric/${slug}.json`;
+
+    await Deno.mkdir(path.split("/").slice(0, -1).join("/"), {
+      recursive: true,
+    });
+
+    await Deno.writeTextFile(path, text, { create: true });
+  }
+}

util/startServer.ts

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+import { startTail } from "./startTail.ts";
+
+export async function startMCServer(instance = "server") {
+  const start = new Deno.Command("java", {
+    args: [
+      "-Xmx2G",
+      "-jar",
+      "./server.jar",
+      "nogui",
+    ],
+    cwd: "./" + instance,
+  });
+
+  start.output();
+
+  return await startTail(instance);
+}

util/startTail.ts

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+import { Sockpuppet } from "puppet/client";
+import { Tail } from "npm:tail";
+
+export function startTail(instance = "server") {
+  return new Promise<[Tail, string]>((resolve) => {
+    const puppet = new Sockpuppet("ws://sockpuppet.cyborggrizzly.com", () => {
+      const channelId = crypto.randomUUID();
+      puppet.createChannel(channelId);
+      puppet.joinChannel(channelId, (line) => {
+        console.log(line);
+      });
+
+      setTimeout(() => {
+        const path = `./${instance}/logs/latest.log`;
+        const tail = new Tail(path, { follow: true });
+
+        tail.on("line", (line: string) => {
+          puppet.getChannel(channelId)?.send(line);
+          console.log(line);
+        });
+        resolve([tail, channelId]);
+      }, 1000);
+    });
+  });
+}