add changes

migrations/20251110192000-create-user-bookmarks.js

@@ -0,0 +1,84 @@
+'use strict';
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    await queryInterface.createTable('user_bookmarks', {
+      id: {
+        type: Sequelize.CHAR(36),
+        primaryKey: true,
+        allowNull: false,
+        comment: 'UUID primary key'
+      },
+      user_id: {
+        type: Sequelize.CHAR(36),
+        allowNull: false,
+        references: {
+          model: 'users',
+          key: 'id'
+        },
+        onUpdate: 'CASCADE',
+        onDelete: 'CASCADE',
+        comment: 'Foreign key to users table'
+      },
+      question_id: {
+        type: Sequelize.CHAR(36),
+        allowNull: false,
+        references: {
+          model: 'questions',
+          key: 'id'
+        },
+        onUpdate: 'CASCADE',
+        onDelete: 'CASCADE',
+        comment: 'Foreign key to questions table'
+      },
+      notes: {
+        type: Sequelize.TEXT,
+        allowNull: true,
+        comment: 'Optional user notes about the bookmarked question'
+      },
+      created_at: {
+        type: Sequelize.DATE,
+        allowNull: false,
+        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
+        comment: 'When the bookmark was created'
+      },
+      updated_at: {
+        type: Sequelize.DATE,
+        allowNull: false,
+        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
+        comment: 'Record last update timestamp'
+      }
+    }, {
+      charset: 'utf8mb4',
+      collate: 'utf8mb4_unicode_ci',
+      comment: 'Junction table for users bookmarking questions'
+    });
+
+    // Add indexes
+    await queryInterface.addIndex('user_bookmarks', ['user_id'], {
+      name: 'idx_user_bookmarks_user_id'
+    });
+
+    await queryInterface.addIndex('user_bookmarks', ['question_id'], {
+      name: 'idx_user_bookmarks_question_id'
+    });
+
+    await queryInterface.addIndex('user_bookmarks', ['created_at'], {
+      name: 'idx_user_bookmarks_created_at'
+    });
+
+    // Unique composite index to prevent duplicate bookmarks
+    await queryInterface.addIndex('user_bookmarks', ['user_id', 'question_id'], {
+      name: 'idx_user_bookmarks_user_question',
+      unique: true
+    });
+
+    console.log('✅ User bookmarks table created with 5 fields and 4 indexes');
+  },
+
+  async down(queryInterface, Sequelize) {
+    await queryInterface.dropTable('user_bookmarks');
+    console.log('✅ User bookmarks table dropped');
+  }
+};