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/**
Edit a list of articles
@param {List<Article>} articles
@param {String} level
@param {Article} newArticle
@return {List<Article>}
*/
function editArticleInList(articles, level, newArticle) {
return articles.map(function(article) {
var articleLevel = article.getLevel();
if (articleLevel == level) {
return article.merge(newArticle);
}
if (level.indexOf(articleLevel) === 0) {
var articles = editArticleInList(article.getArticles(), level, newArticle);
return article.set('articles', articles);
}
return article;
});
}
/**
Edit an article in a part
@param {Part} part
@param {String} level
@param {Article} newArticle
@return {Part}
*/
function editArticleInPart(part, level, newArticle) {
var articles = part.getArticles();
articles = editArticleInList(articles);
return part.set('articles', articles);
}
/**
Edit an article in a summary
@param {Summary} summary
@param {String} level
@param {Article} newArticle
@return {Summary}
*/
function editArticle(summary, level, newArticle) {
var parts = summary.getParts();
var levelParts = level.split('.');
var partIndex = Number(levelParts[0]);
var part = parts.get(partIndex);
if (!part) {
return summary;
}
part = editArticleInPart(part, level, newArticle);
parts = parts.set(partIndex, part);
return summary.set('parts', parts);
}
module.exports = editArticle;
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