update context API

models/Context.js

@@ -15,11 +15,18 @@ const Context = sequelize.define('Context', {
   },
   context: {
     type: DataTypes.TEXT,
-    allowNull: false,
+    allowNull: true,
     comment: 'Context description'
   },
+  grade : {
+    type: DataTypes.INTEGER,
+    allowNull: false,
+    defaultValue: 100,
+    comment: 'It is number of gradeX100 + unitX10 + lesson (e.g., Grade 1 Unit 2 Lesson 3 = 123)'
+  },
   knowledge: {
     type: DataTypes.TEXT,
+    allowNull: true,
     comment: 'Additional knowledge or information'
   },
   type: {
@@ -31,7 +38,7 @@ const Context = sequelize.define('Context', {
     type: DataTypes.TEXT,
     comment: 'Detailed description or requirement'
   },
-  prompt: {
+  img_prompt: {
     type: DataTypes.JSON,
     comment: 'Prompt configuration object'
   },
@@ -39,30 +46,15 @@ const Context = sequelize.define('Context', {
     type: DataTypes.JSON,
     comment: 'Array of image URLs'
   },
-  difficulty: {
-    type: DataTypes.INTEGER,
-    defaultValue: 1,
-    comment: 'Difficulty level (1-10)'
-  },
   max: {
     type: DataTypes.INTEGER,
-    defaultValue: 0,
+    defaultValue: 1,
     comment: 'Maximum number of images or items'
   },
-  isPrompt: {
-    type: DataTypes.BOOLEAN,
-    defaultValue: false,
-    comment: 'Prompt created (0/1)'
-  },
-  isList: {
-    type: DataTypes.BOOLEAN,
-    defaultValue: false,
-    comment: 'Waiting for more images (0/1)'
-  },
-  isApprove: {
-    type: DataTypes.BOOLEAN,
-    defaultValue: false,
-    comment: 'Teacher approval status (0/1)'
+  status: {
+    type: DataTypes.INTEGER, // Hoặc DataTypes.ENUM('DRAFT', 'ENRICHED', 'PENDING_IMAGE', ...)
+    defaultValue: 0,
+    comment: '0: Draft, 1: Enriched, 2: Prompt_Ready, 3: Generating, 4: Image_Ready, 5: Approved'
   },
   created_at: {
     type: DataTypes.DATE,
@@ -75,6 +67,7 @@ const Context = sequelize.define('Context', {
 }, {
   tableName: 'context',
   timestamps: true,
+  underscored: false,
   createdAt: 'created_at',
   updatedAt: 'updated_at',
   indexes: [

models/Vocab.js

@@ -24,7 +24,8 @@ const Vocab = sequelize.define('Vocab', {
     // Ví dụ 111 là grade 1, unit 1, lesson 1
     location: {
       type: DataTypes.INTEGER,
-      comment: 'Location or source of the vocabulary'
+      defaultValue: 100,
+      comment: 'It is number of gradeX100 + unitX10 + lesson (e.g., Grade 1 Unit 2 Lesson 3 = 123)'
     },
     // Loại biến thể (V1, V2, V3, V_ing, Noun_Form...)
     form_key: {