add postman

scripts/postman.ts

@@ -0,0 +1,105 @@
+import arg from "arg";
+import paths from "node:path";
+import fs from "node:fs/promises";
+
+const globalArgs = arg(
+  {
+    "--help": Boolean,
+  },
+  { argv: process.argv.slice(2), stopAtPositional: true },
+);
+
+if (globalArgs["--help"] || globalArgs._.length === 0) {
+  process.stdout.write(`postman.ts [...options] <command>
+
+COMMANDS
+
+new - Create new post
+
+OPTIONS
+--help - Print this message and exit
+`);
+
+  process.exit();
+}
+
+const command = globalArgs._[0];
+let rest = globalArgs._.slice(1);
+
+function parseNewPostArgsPartial(rest: string[]) {
+  return arg(
+    {
+      "--draft": Boolean,
+      "--overwrite": Boolean,
+      "--help": Boolean,
+    },
+    { stopAtPositional: true, argv: rest },
+  );
+}
+
+const postRoot = paths.resolve(import.meta.dir, "..", "src", "posts");
+
+if (command === "new") {
+  const cfg = parseNewPostArgsPartial(rest);
+  rest = cfg._.slice(1);
+  const postId: string = cfg._[0];
+
+  const hasAdditionalArgs = cfg._.length > 0;
+
+  const partialCfg = parseNewPostArgsPartial(rest);
+  Object.assign(cfg, partialCfg);
+
+  if (cfg["--help"] || !hasAdditionalArgs) {
+    process.stdout.write(`postman.ts new <postId> [...options]
+
+Create a new post with default content.
+
+OPTIONS
+
+--draft - Create the post as a draft
+--overwrite - Overwrite existing file
+--help - Print this message and exit
+`);
+
+    process.exit();
+  }
+
+  if (partialCfg._.length > 0) {
+    throw new TypeError(`unexpected positional argument "${partialCfg._[0]}"`);
+  }
+
+  const thisPostRoot = paths.join(postRoot, postId);
+
+  await fs.mkdir(thisPostRoot);
+
+  const postContent = `---
+title: ${postId}
+${cfg["--draft"] ? "visibility: draft" : ""}
+---
+import More from "~/components/More.astro";
+
+<More />
+`;
+
+  const thisPostFilename = paths.join(thisPostRoot, "index.mdx");
+
+  const file = await fs.open(
+    thisPostFilename,
+    (cfg["--overwrite"]
+      ? fs.constants.O_TRUNC
+      : fs.constants.O_CREAT | fs.constants.O_EXCL) | fs.constants.O_WRONLY,
+  );
+
+  try {
+    await fs.writeFile(file, postContent, {
+      encoding: "utf-8",
+    });
+  } finally {
+    await file.close();
+  }
+
+  const displayedPath = paths.relative(process.cwd(), thisPostFilename);
+  process.stdout.write(displayedPath);
+} else {
+  throw new TypeError(`unknown command ${command}`);
+}