1 files changed, 48 insertions, 0 deletions
diff --git a/lib/models/summaryPart.js b/lib/models/summaryPart.js
new file mode 100644
index 0000000..f7a82ce
--- /dev/null
+++ b/lib/models/summaryPart.js
@@ -0,0 +1,48 @@
+var Immutable = require('immutable');
+
+var SummaryArticle = require('./summaryArticle');
+
+/*
+    A part represents a section in the Summary / table of Contents
+*/
+
+var SummaryPart = Immutable.Record({
+    level:      String(),
+    title:      String(),
+    articles:   Immutable.List()
+});
+
+SummaryPart.prototype.getLevel = function() {
+    return this.get('level');
+};
+
+SummaryPart.prototype.getTitle = function() {
+    return this.get('title');
+};
+
+SummaryPart.prototype.getArticles = function() {
+    return this.get('articles');
+};
+
+/**
+    Create a SummaryPart
+
+    @param {Object} def
+    @return {SummaryPart}
+*/
+SummaryPart.create = function(def, level) {
+    var articles = (def.articles || []).map(function(article, i) {
+        if (article instanceof SummaryArticle) {
+            return article;
+        }
+        return SummaryArticle.create(article, [level, i + 1].join('.'));
+    });
+
+    return new SummaryPart({
+        level: String(level),
+        title: def.title,
+        articles: Immutable.List(articles)
+    });
+};
+
+module.exports = SummaryPart;