feat(AssetsHandler): Add asset handling to the CLI workflow

ts/mod_assets/index.ts

@@ -0,0 +1,38 @@
+import * as plugins from './plugins.js';
+import * as paths from '../paths.js';
+
+export class AssetsHandler {
+  public defaultFromDirPath: string = plugins.path.join(paths.cwd, './assets');
+  public defaultToDirPath: string = plugins.path.join(paths.cwd, './dist_serve/assets');
+
+  public async ensureAssetsDir() {
+    const assetsDirExists = await plugins.smartfile.fs.isDirectory(this.defaultFromDirPath);
+    if (!assetsDirExists) {
+      console.log(`creating assets directory at ${this.defaultFromDirPath}`);
+      await plugins.smartfile.fs.ensureDir(this.defaultFromDirPath);
+    }
+  }
+
+  // copies the html
+  public async processAssets(optionsArg?: {
+    from?: string;
+    to?: string;
+  }) {
+    // lets assemble the options
+    optionsArg = {
+      ... {
+        from: this.defaultFromDirPath,
+        to: this.defaultToDirPath,
+      },
+      ...(optionsArg || {})
+    }
+    await this.ensureAssetsDir()
+    optionsArg.from = plugins.smartpath.transform.toAbsolute(optionsArg.from, paths.cwd) as string;
+    optionsArg.to = plugins.smartpath.transform.toAbsolute(optionsArg.to, paths.cwd) as string;
+
+    // lets clean theh target directory
+    plugins.smartfile.fs.ensureEmptyDir(optionsArg.to);
+
+    plugins.smartfile.fs.copySync(optionsArg.from, optionsArg.to);
+  }
+}