add lesson menu item service for building left nav

java/org/owasp/webgoat/service/LessonMenuService.java

@@ -0,0 +1,87 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.owasp.webgoat.service;
+
+import java.util.ArrayList;
+import java.util.List;
+import javax.servlet.http.HttpSession;
+import org.owasp.webgoat.lessons.AbstractLesson;
+import org.owasp.webgoat.lessons.Category;
+import org.owasp.webgoat.lessons.RandomLessonAdapter;
+import org.owasp.webgoat.lessons.model.LessonMenuItem;
+import org.owasp.webgoat.lessons.model.LessonMenuItemType;
+import org.owasp.webgoat.session.Course;
+import org.owasp.webgoat.session.WebSession;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+/**
+ *
+ * @author rlawson
+ */
+@Controller
+public class LessonMenuService extends BaseService {
+
+    /**
+     * Returns the lesson menu which is used to build the left nav
+     *
+     * @param session
+     * @return
+     */
+    @RequestMapping(value = "/lessonmenu.do", produces = "application/json")
+    public @ResponseBody
+    List<LessonMenuItem> showLeftNav(HttpSession session) {
+        //TODO - need Links, rank, title
+        List<LessonMenuItem> menu = new ArrayList<LessonMenuItem>();
+        WebSession ws;
+        Object o = session.getAttribute(WebSession.SESSION);
+        if (o == null || !(o instanceof WebSession)) {
+            return null;
+        }
+        ws = (WebSession) o;
+        AbstractLesson l = ws.getCurrentLesson();
+        // Get the categories, these are the main menu items
+        Course course = ((Course) session.getAttribute("course"));
+        List<Category> categories = course.getCategories();
+        
+        for (Category category : categories) {
+            LessonMenuItem categoryItem = new LessonMenuItem();
+            categoryItem.setName(category.getName());
+            categoryItem.setType(LessonMenuItemType.CATEGORY);
+            // check for any lessons for this category
+            List<AbstractLesson> lessons = ws.getLessons(category);
+            for (AbstractLesson lesson : lessons) {
+                LessonMenuItem lessonItem = new LessonMenuItem();
+                lessonItem.setName(lesson.getName());
+                lessonItem.setType(LessonMenuItemType.LESSON);
+                if (lesson.isCompleted(ws)) {
+                    lessonItem.setComplete(true);
+                }
+                categoryItem.addChild(lessonItem);
+                // Does the lesson have stages
+                if (lesson instanceof RandomLessonAdapter) {
+                    RandomLessonAdapter rla = (RandomLessonAdapter) lesson;
+                    String[] stages = rla.getStages();
+                    if (stages != null) {
+                        for (String stage : stages) {
+                            LessonMenuItem stageItem = new LessonMenuItem();
+                            stageItem.setName(stage);
+                            stageItem.setType(LessonMenuItemType.STAGE);
+                            if (rla.isStageComplete(ws, stage)) {
+                                stageItem.setComplete(true);
+                            }
+                            lessonItem.addChild(stageItem);
+                        }
+                    }
+                }
+            }
+            menu.add(categoryItem);
+        }
+        return menu;
+        
+    }
+}