refactor(installer): #32 make install a sub command

packages/content-collections/package.json

@@ -1,9 +1,13 @@
 {
   "name": "content-collections",
+  "description": "Installer for content-collections",
   "version": "0.1.0",
   "type": "module",
   "main": "dist/index.js",
   "types": "./dist/index.d.ts",
+  "bin": {
+    "content-collections": "./dist/index.js"
+  },
   "exports": {
     "./package.json": "./package.json",
     ".": {
@@ -22,6 +26,7 @@
     "@content-collections/installer": "workspace:^",
     "@inquirer/prompts": "^7.0.0",
     "chalk": "^5.3.0",
+    "clerc": "^0.44.0",
     "listr2": "^8.2.5",
     "zod": "^3.23.8"
   },

packages/content-collections/src/commands/install.ts

@@ -0,0 +1,66 @@
+#!/usr/bin/env node
+import { createMigrator, type Option } from "@content-collections/installer";
+import { input, select } from "@inquirer/prompts";
+import chalk from "chalk";
+import { Listr } from "listr2";
+
+async function ask(option: Option) {
+  if (option.type === "list") {
+    const result = await select({
+      message: option.description || `Select an ${option.name}`,
+      default: option.defaultValue,
+      choices: option.choices,
+    });
+    if (typeof result !== "string") {
+      throw new Error("Invalid selection, the result must be a string");
+    }
+
+    return result;
+  }
+
+  return input({
+    default: option.defaultValue,
+    message: option.description || `Enter ${option.name}`,
+  });
+}
+
+export default async function install(directory: string) {
+  console.log("Searching for migrator in", directory);
+  const migrator = await createMigrator(directory);
+
+  console.log();
+  console.log(
+    "Found migrator",
+    chalk.bold(migrator.name) + ",",
+    "collecting options",
+  );
+  const migration = await migrator.createMigration(ask);
+  console.log();
+  console.log("Migration tasks:");
+
+  const tasks = new Listr(
+    migration.map((t) => ({
+      title: chalk.bold(t.name),
+      task: async (_, task) => {
+        const result = await t.run();
+        if (result.status === "skipped") {
+          task.skip(`${chalk.bold(t.name)}: ${result.message} [SKIPPED]`);
+        } else if (result.status === "error") {
+          throw new Error(`${chalk.bold(t.name)}: ${result.message} [ERROR]`);
+        }
+      },
+    })),
+    {
+      concurrent: false,
+      collectErrors: "minimal",
+      exitOnError: false,
+    },
+  );
+
+  await tasks.run();
+  if (tasks.errors.length > 0) {
+    console.log();
+    console.error("Errors occurred during migration");
+    process.exit(1);
+  }
+}

packages/content-collections/src/index.ts

@@ -1,68 +1,34 @@
 #!/usr/bin/env node
-import { createMigrator, type Option } from "@content-collections/installer";
-import { input, select } from "@inquirer/prompts";
-import chalk from "chalk";
-import { Listr } from "listr2";
 
-async function ask(option: Option) {
-  if (option.type === "list") {
-    const result = await select({
-      message: option.description || `Select an ${option.name}`,
-      default: option.defaultValue,
-      choices: option.choices,
-    });
-    if (typeof result !== "string") {
-      throw new Error("Invalid selection, the result must be a string");
-    }
+import { Clerc, completionsPlugin, helpPlugin, versionPlugin } from "clerc";
+import install from "./commands/install.js";
 
-    return result;
-  }
+import { createRequire } from "node:module";
+const require = createRequire(import.meta.url);
+const packageJson = require("../package.json");
 
-  return input({
-    default: option.defaultValue,
-    message: option.description || `Enter ${option.name}`,
-  });
+const name = "content-collections";
+if (!packageJson.bin[name]) {
+  throw new Error(`Missing bin entry for ${name} in package.json`);
 }
 
-async function install() {
-  console.log("Searching for migrator in", process.cwd());
-  const migrator = await createMigrator(process.cwd());
-
-  console.log();
-  console.log(
-    "Found migrator",
-    chalk.bold(migrator.name) + ",",
-    "collecting options",
-  );
-  const migration = await migrator.createMigration(ask);
-  console.log();
-  console.log("Migration tasks:");
-
-  const tasks = new Listr(
-    migration.map((t) => ({
-      title: chalk.bold(t.name),
-      task: async (_, task) => {
-        const result = await t.run();
-        if (result.status === "skipped") {
-          task.skip(`${chalk.bold(t.name)}: ${result.message} [SKIPPED]`);
-        } else if (result.status === "error") {
-          throw new Error(`${chalk.bold(t.name)}: ${result.message} [ERROR]`);
-        }
+Clerc.create()
+  .scriptName(name)
+  .description(packageJson.description)
+  .version(packageJson.version)
+  .command("install", "Installs content-collection to a existing project", {
+    flags: {
+      directory: {
+        type: String,
+        description: "Path to the existing project",
+        default: ".",
       },
-    })),
-    {
-      concurrent: false,
-      collectErrors: "minimal",
-      exitOnError: false,
     },
-  );
-
-  await tasks.run();
-  if (tasks.errors.length > 0) {
-    console.log();
-    console.error("Errors occurred during migration");
-    process.exit(1);
-  }
-}
-
-install();
+  })
+  .on("install", (context) => {
+    return install(context.flags.directory);
+  })
+  .use(helpPlugin())
+  .use(versionPlugin())
+  .use(completionsPlugin())
+  .parse();