Create shopping server

server/models/ShoppingItem.js

@@ -0,0 +1,50 @@
+const { DataTypes } = require('sequelize');
+
+module.exports = (sequelize) => {
+  const ShoppingItem = sequelize.define('ShoppingItem', {
+    id: {
+      type: DataTypes.INTEGER,
+      primaryKey: true,
+      autoIncrement: true,
+    },
+    name: {
+      type: DataTypes.STRING,
+      allowNull: false,
+      validate: {
+        notEmpty: true,
+      },
+    },
+    amount: {
+      type: DataTypes.STRING,
+      allowNull: false,
+      defaultValue: '1',
+    },
+    checked: {
+      type: DataTypes.BOOLEAN,
+      defaultValue: false,
+    },
+    checkedAt: {
+      type: DataTypes.DATE,
+      allowNull: true,
+    },
+    date: {
+      type: DataTypes.DATE,
+      allowNull: false,
+      defaultValue: DataTypes.NOW,
+    },
+  }, {
+    timestamps: true,
+    hooks: {
+      beforeUpdate: (item, options) => {
+        // Set checkedAt timestamp when item is checked
+        if (item.checked && !item.previous('checked')) {
+          item.checkedAt = new Date();
+        } else if (!item.checked) {
+          item.checkedAt = null;
+        }
+      },
+    },
+  });
+
+  return ShoppingItem;
+};