1 files changed, 38 insertions, 3 deletions
diff --git a/lib/models/book.js b/lib/models/book.js
index da0deee..62faba6 100644
--- a/lib/models/book.js
+++ b/lib/models/book.js
@@ -27,7 +27,14 @@ var Book = Immutable.Record({
     readme:         Readme(),
     summary:        Summary(),
     glossary:       Glossary(),
-    languages:      Languages()
+    languages:      Languages(),
+
+
+    // Parent of this book, if multilingual
+    parent:         null,
+
+    // List of children, if multilingual
+    books:          Immutable.List()
 });
 
 Book.prototype.getLogger = function() {
@@ -62,8 +69,12 @@ Book.prototype.getLanguages = function() {
     return this.get('languages');
 };
 
-Book.prototype.getPages = function() {
-    return this.get('pages');
+Book.prototype.getParent = function() {
+    return this.get('parent');
+};
+
+Book.prototype.getBooks = function() {
+    return this.get('books');
 };
 
 /**
@@ -132,6 +143,15 @@ Book.prototype.getPage = function(ref) {
 };
 
 /**
+    Is this book the parent of language's books
+
+    @return {Boolean}
+*/
+Book.prototype.isMultilingual = function() {
+    return (this.getLanguages().getList().size > 0);
+};
+
+/**
     Create a book using a filesystem
 
     @param {FS} fs
@@ -143,4 +163,19 @@ Book.createForFS = function createForFS(fs) {
     });
 };
 
+/**
+    Create a language book from a parent
+
+    @param {Book} parent
+    @param {String} basePath: folder o the book in the parent
+    @return {Book}
+*/
+Book.createFromParent = function createFromParent(parent, basePath) {
+    return new Book({
+        logger: parent.getLogger(),
+        parent: parent,
+        fs: FS.reduceScope(book.getFS(), basePath)
+    });
+};
+
 module.exports = Book;