david solution

src-php/app/internship/controller/process/ArticleInProcess.php

@@ -0,0 +1,46 @@
+<?php
+namespace internship\controller\process;
+
+use n2n\util\type\attrs\DataMap;
+use n2n\web\http\controller\impl\ControllingUtils;
+use n2n\web\http\controller\impl\HttpData;
+use n2n\web\http\controller\impl\ExecResult;
+use n2n\bind\build\impl\Bind;
+use n2n\bind\mapper\impl\Mappers;
+use n2n\validation\validator\impl\Validators;
+use internship\bo\Article;
+use internship\bo\CategoryName;
+
+class ArticleInProcess {
+	private DataMap $dataMap;
+	public function __construct(private ControllingUtils $cu) {
+
+	}
+
+	/**
+	 * @param HttpData $httpData
+	 * @return ExecResult
+	 */
+	function in(HttpData $httpData, ?Article $article = null): ExecResult {
+		$this->dataMap = new DataMap();
+
+		$mustExist = $article  === null;
+		return $this->cu->exec(Bind::attrs($httpData)->toAttrs($this->dataMap)
+				->dynProp('categoryName', $mustExist, Mappers::cleanString(true), Validators::enum(
+						['international', 'national', 'sport']))
+				->dynProp('text', $mustExist, Mappers::cleanString(true, maxlength: 9999) )
+				->dynProp('title', $mustExist, Mappers::cleanString(true, minlength: 3, maxlength: 255)));
+	}
+
+	function out(Article $article): Article {
+		$this->cu->exec(Bind::attrs($this->dataMap)->toObj($article)
+				->optProp('categoryName',
+						Validators::enum(['international', 'national', 'sport']),
+						Mappers::valueClosure(function ($categoryNameStr)  {
+							return CategoryName::tryFrom($categoryNameStr);
+						}))
+				->optProp('text', Mappers::cleanString(true, maxlength: 9999) )
+				->optProp('title', Mappers::cleanString(true, minlength: 3, maxlength: 255)));
+		return $article;
+	}
+}