server state and stdio streaming

state/serverState.ts

@@ -0,0 +1,85 @@
+import { Tail } from "npm:tail";
+import { Sockpuppet } from "puppet/client";
+import { acceptEULA, checkEULA } from "../util/EULA.ts";
+
+class ServerState {
+  private status: "running" | "stopped" = "stopped";
+
+  private command!: Deno.Command;
+  private process!: Deno.ChildProcess;
+
+  private tail: Tail;
+
+  private _eulaAccepted: boolean;
+
+  private sockpuppet!: Sockpuppet;
+  private _channelId = "blanaba";
+  public get channelId () {
+    return this._channelId;
+  }
+  public get eulaAccepted() {
+    return this._eulaAccepted;
+  }
+
+  constructor() {
+    this._eulaAccepted = checkEULA();
+    this.sockpuppet = new Sockpuppet(
+      "ws://sockpuppet.cyborggrizzly.com",
+      () => {
+        this.sockpuppet.joinChannel(this.channelId, (msg) => {this.sendStdIn(msg)});
+      },
+    );
+  }
+
+  public get stdin() {
+    return this.process.stdin;
+  }
+
+  public get channel() {
+    return this.sockpuppet.getChannel(this.channelId)
+  }
+
+  public sendStdIn(message: string) {
+    const msg = new TextEncoder().encode(message);
+    this.process.stdin.getWriter().write(msg);
+  }
+
+  // "instance" should be moved to a private member once multi-instance support is implemented
+  public startMCServer(instance = "server") {
+    this.command = new Deno.Command("java", {
+      args: [
+        "-Xmx2G",
+        "-jar",
+        "./server.jar",
+        "nogui",
+      ],
+      cwd: "./" + instance,
+      stdin: "piped",
+      stdout: "piped",
+    });
+
+    this.process = this.command.spawn();
+
+    this.startStream();
+  }
+
+  private async startStream() {
+    const stream = this.process.stdout.getReader();
+    const decoder = new TextDecoder();
+
+    while (true) {
+      const {done, value} = await stream.read();
+      if (value) {
+        this.channel?.send(decoder.decode(value));
+      }
+      if (done) break;
+    }
+  }
+
+  public acceptEULA() {
+    this._eulaAccepted = true;
+    acceptEULA();
+  }
+}
+
+export const SERVER_STATE = new ServerState();