update

models/index.js

@@ -33,6 +33,7 @@ const Game = require('./Game');
 const GameType = require('./GameType');
 const LessonComponentProgress = require('./LessonComponentProgress');
 const LessonLeaderboard = require('./LessonLeaderboard');
+const LessonStory = require('./LessonStory');
 
 // Group 3.2: Vocabulary System (NEW)
 const Vocab = require('./Vocab');
@@ -162,6 +163,24 @@ const setupRelationships = () => {
   Chapter.hasMany(Lesson, { foreignKey: 'chapter_id', as: 'lessons' });
   Lesson.belongsTo(Chapter, { foreignKey: 'chapter_id', as: 'chapter' });
   
+  // Lesson <-> Story (N:N through LessonStory)
+  Lesson.belongsToMany(Story, {
+    through: LessonStory,
+    foreignKey: 'lesson_id',
+    otherKey: 'story_id',
+    as: 'stories'
+  });
+  Story.belongsToMany(Lesson, {
+    through: LessonStory,
+    foreignKey: 'story_id',
+    otherKey: 'lesson_id',
+    as: 'lessons'
+  });
+  
+  // Direct access to pivot table
+  LessonStory.belongsTo(Lesson, { foreignKey: 'lesson_id', as: 'lesson' });
+  LessonStory.belongsTo(Story, { foreignKey: 'story_id', as: 'story' });
+  
   // Lesson Progress relationships
   LessonComponentProgress.belongsTo(UsersAuth, { foreignKey: 'user_id', as: 'user' });
   LessonComponentProgress.belongsTo(Lesson, { foreignKey: 'lesson_id', as: 'lesson' });
@@ -295,6 +314,7 @@ module.exports = {
   GameType,
   LessonComponentProgress,
   LessonLeaderboard,
+  LessonStory,
   
   // Group 3.2: Vocabulary System (NEW)
   Vocab,