update

models/GrammarMediaStory.js

@@ -0,0 +1,71 @@
+const { DataTypes } = require('sequelize');
+const { sequelize } = require('../config/database');
+
+const GrammarMediaStory = sequelize.define('GrammarMediaStory', {
+  id: {
+    type: DataTypes.UUID,
+    defaultValue: DataTypes.UUIDV4,
+    primaryKey: true
+  },
+  grammar_id: {
+    type: DataTypes.UUID,
+    allowNull: false,
+    references: {
+      model: 'grammars',
+      key: 'id'
+    },
+    onDelete: 'CASCADE',
+    comment: 'Foreign key to grammars table'
+  },
+  story_id: {
+    type: DataTypes.STRING(100),
+    allowNull: false,
+    comment: 'Unique story identifier (e.g., "st-01")'
+  },
+  title: {
+    type: DataTypes.STRING(200),
+    allowNull: false,
+    comment: 'Story title'
+  },
+  type: {
+    type: DataTypes.ENUM('story', 'video', 'animation', 'audio'),
+    allowNull: false,
+    defaultValue: 'story',
+    comment: 'Media type'
+  },
+  url: {
+    type: DataTypes.STRING(500),
+    allowNull: false,
+    comment: 'Single URL to the complete media file'
+  },
+  thumbnail: {
+    type: DataTypes.STRING(500),
+    allowNull: true,
+    comment: 'Thumbnail image URL'
+  },
+  description: {
+    type: DataTypes.TEXT,
+    allowNull: true,
+    comment: 'Story description'
+  },
+  duration_seconds: {
+    type: DataTypes.INTEGER,
+    allowNull: true,
+    comment: 'Media duration in seconds'
+  },
+  min_grade: {
+    type: DataTypes.INTEGER,
+    allowNull: true,
+    comment: 'Minimum grade level for this story'
+  }
+}, {
+  tableName: 'grammar_media_stories',
+  timestamps: true,
+  indexes: [
+    { fields: ['grammar_id'] },
+    { fields: ['story_id'] },
+    { fields: ['type'] }
+  ]
+});
+
+module.exports = GrammarMediaStory;