feat: initialize unidesk platform

scripts/src/command.ts

@@ -0,0 +1,55 @@
+import { spawn, spawnSync } from "node:child_process";
+import { createWriteStream, existsSync, readFileSync } from "node:fs";
+
+export interface CommandResult {
+  command: string[];
+  cwd: string;
+  exitCode: number | null;
+  stdout: string;
+  stderr: string;
+}
+
+export function runCommand(command: string[], cwd: string): CommandResult {
+  const result = spawnSync(command[0], command.slice(1), {
+    cwd,
+    encoding: "utf8",
+    maxBuffer: 1024 * 1024 * 8,
+  });
+  return {
+    command,
+    cwd,
+    exitCode: result.status,
+    stdout: result.stdout ?? "",
+    stderr: result.stderr ?? result.error?.message ?? "",
+  };
+}
+
+export function commandOk(command: string[], cwd: string): boolean {
+  return runCommand(command, cwd).exitCode === 0;
+}
+
+export async function runCommandToFiles(command: string[], cwd: string, stdoutFile: string, stderrFile: string): Promise<number | null> {
+  const stdout = createWriteStream(stdoutFile, { flags: "a" });
+  const stderr = createWriteStream(stderrFile, { flags: "a" });
+  stdout.write(`$ ${command.map((part) => JSON.stringify(part)).join(" ")}\n`);
+  const child = spawn(command[0], command.slice(1), { cwd, env: process.env });
+  child.stdout.pipe(stdout, { end: false });
+  child.stderr.pipe(stderr, { end: false });
+  const exitCode = await new Promise<number | null>((resolve) => {
+    child.on("close", (code) => resolve(code));
+    child.on("error", (error) => {
+      stderr.write(`${error.stack ?? error.message}\n`);
+      resolve(127);
+    });
+  });
+  stdout.write(`\n[exit_code=${exitCode}]\n`);
+  stdout.end();
+  stderr.end();
+  return exitCode;
+}
+
+export function tailFile(path: string, maxBytes = 8192): string {
+  if (!existsSync(path)) return "";
+  const content = readFileSync(path);
+  return content.subarray(Math.max(0, content.length - maxBytes)).toString("utf8");
+}