Feature for enabling product to be created by seller

	modified:   package.json
	new file:   public/uploads/mac.jpg
	new file:   public/uploads/to-do-app.jpeg
	new file:   src/controllers/categoriesController.ts
	new file:   src/controllers/productsController.ts
	modified:   src/database/index.ts
	new file:   src/database/migrations/20240426195145-create-category.js
	new file:   src/database/migrations/20240426204430-create-product.js
	new file:   src/database/models/Category.ts
	new file:   src/database/models/Product.ts
	new file:   src/middlewares/multer.ts
	new file:   src/routes/categoryRouter.ts
	modified:   src/routes/index.ts
	new file:   src/routes/productRoutes.ts
	modified:   src/server.ts

package.json

@@ -34,11 +34,11 @@
     "glob": "^10.3.12",
     "jsonwebtoken": "^9.0.2",
     "mailgen": "^2.0.28",
+    "multer": "^1.4.5-lts.1",
     "nodemailer": "^6.9.13",
     "passport": "^0.7.0",
     "passport-google-oauth20": "^2.0.0",
     "passport-jwt": "^4.0.1",
-    "multer": "^1.4.5-lts.1",
     "pg": "^8.11.5",
     "pg-hstore": "^2.3.4",
     "sequelize": "^6.37.2",
@@ -91,4 +91,4 @@
       "eslint --fix"
     ]
   }
-}
+}

src/controllers/categoriesController.ts

@@ -0,0 +1,31 @@
+import { Request, Response } from 'express';
+import { Category, CategoryCreationAttributes } from '../database/models/Category';
+import logger from '../logs/config';
+
+export const createCategory = async (req: Request, res: Response) => {
+  try {
+    const { name, description } = req.body as CategoryCreationAttributes;
+    const newCategory = await Category.create({
+      name,
+      description,
+    });
+    res.status(201).json({ status: 201, ok: true, message: 'New category created successully!', data: newCategory });
+  } catch (error) {
+    if (error instanceof Error) {
+      logger.error(error.message);
+    }
+    res.status(500).json({ error: 'Failed to create category' });
+  }
+};
+
+export const getCategory = async (req: Request, res: Response) => {
+  try {
+    const categories = await Category.findAll();
+    res.status(200).json({ ok: true, data: categories });
+  } catch (error) {
+    if (error instanceof Error) {
+      logger.error(error.message);
+    }
+    res.status(500).json({ error: 'Failed to fetch categories' });
+  }
+};

src/controllers/productsController.ts

@@ -0,0 +1,72 @@
+import { Request, Response } from 'express';
+import { Product, ProductCreationAttributes } from '../database/models/Product';
+import logger from '../logs/config';
+import uploadImage from '../helpers/claudinary';
+import { validateFields } from '../validations';
+
+export const createProduct = async (req: Request, res: Response) => {
+  try {
+    const { categoryId } = req.params;
+    const productImages = [];
+    const images: unknown = req.files;
+    if (images instanceof Array && images.length > 3) {
+      for (const image of images) {
+        const imageBuffer: Buffer = image.buffer;
+        const url = await uploadImage(imageBuffer);
+        productImages.push(url);
+      }
+    } else {
+      return res.status(400).json({
+        status: 400,
+        message: 'Product should have at least 4 images',
+      });
+    }
+
+    const requiredFields = ['name', 'description', 'price'];
+    const missingFields = validateFields(req, requiredFields);
+
+    if (missingFields.length > 0) {
+      res.status(400).json({
+        ok: false,
+        message: `Required fields are missing: ${missingFields.join(', ')}`,
+      });
+    }
+
+    const { name, description, price, discount } = req.body as ProductCreationAttributes;
+
+    const thisProductExists = await Product.findOne({ where: { name } });
+
+    if (thisProductExists) {
+      return res.status(400).json({
+        status: 400,
+        ok: false,
+        message: 'This Product already exists, You can update the stock levels instead.',
+        data: thisProductExists,
+        discount,
+      });
+    }
+
+    const createdProduct = await Product.create({
+      name,
+      description,
+      price,
+      categoryId,
+      images: productImages,
+    });
+
+    res
+      .status(201)
+      .json({ status: 201, ok: true, data: createdProduct, message: 'Thank you for adding new product in the store!' });
+  } catch (error) {
+    if (error instanceof Error) {
+      res.status(500).json({
+        status: 500,
+        ok: false,
+        message: 'Something went wrong when creating the product',
+        error: error.message,
+      });
+    } else {
+      logger.error('Unexpected error', error);
+    }
+  }
+};

src/database/index.ts

@@ -6,8 +6,8 @@ const databaseConnection = async () => {
   try {
     await sequelize.authenticate();
     logger.info('connected to the database');
-  } catch (error: any) {
-    logger.error(error.message);
+  } catch (error: unknown) {
+    if (error instanceof Error) console.log(error.message);
   }
 };
 

src/database/migrations/20240425195548-create-user.js

@@ -48,6 +48,11 @@ module.exports = {
         allowNull: false,
         defaultValue: false,
       },
+      status: {
+        type: Sequelize.ENUM('active', 'inactive'),
+        allowNull: false,
+        defaultValue: 'active',
+      },
       createdAt: {
         allowNull: false,
         type: Sequelize.DATE,

src/database/migrations/20240426195145-create-category.js

@@ -0,0 +1,40 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
+'use strict';
+
+const sequelize = require('sequelize');
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    await queryInterface.createTable('categories', {
+      id: {
+        allowNull: false,
+        primaryKey: true,
+        type: Sequelize.UUID,
+        defaultValue: sequelize.UUIDV4,
+        unique: true,
+      },
+      name: {
+        type: Sequelize.STRING,
+        allowNull: false,
+      },
+      description: {
+        type: Sequelize.TEXT,
+        allowNull: false,
+      },
+      createdAt: {
+        allowNull: false,
+        type: Sequelize.DATE,
+        defaultValue: Sequelize.literal('NOW()'),
+      },
+      updatedAt: {
+        allowNull: false,
+        type: Sequelize.DATE,
+        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
+      },
+    });
+  },
+  async down(queryInterface) {
+    await queryInterface.dropTable('categories');
+  },
+};

src/database/migrations/20240429115230-create-product.js

@@ -0,0 +1,63 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
+'use strict';
+
+const sequelize = require('sequelize');
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    await queryInterface.createTable('products', {
+      id: {
+        allowNull: false,
+        primaryKey: true,
+        type: Sequelize.UUID,
+        defaultValue: sequelize.UUIDV4,
+        unique: true,
+      },
+      name: {
+        type: Sequelize.STRING,
+        allowNull: false,
+      },
+      description: {
+        type: Sequelize.TEXT,
+        allowNull: false,
+      },
+      price: {
+        type: Sequelize.FLOAT,
+        allowNull: false,
+      },
+      discount: {
+        type: Sequelize.FLOAT,
+        allowNull: true,
+        defaultValue: 0, // Default discount is 0
+      },
+      images: {
+        type: Sequelize.ARRAY(Sequelize.STRING),
+        allowNull: false,
+      },
+      categoryId: {
+        type: Sequelize.UUID,
+        allowNull: false,
+        references: {
+          model: 'categories',
+          key: 'id',
+        },
+        onUpdate: 'CASCADE', // Optional: Update the behavior on category deletion
+        onDelete: 'CASCADE', // Optional: Delete associated products on category deletion
+      },
+      createdAt: {
+        allowNull: false,
+        type: Sequelize.DATE,
+        defaultValue: Sequelize.literal('NOW()'),
+      },
+      updatedAt: {
+        allowNull: false,
+        type: Sequelize.DATE,
+        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
+      },
+    });
+  },
+  async down(queryInterface) {
+    await queryInterface.dropTable('products');
+  },
+};

src/database/models/Category.ts

@@ -0,0 +1,41 @@
+import { Model, Optional, DataTypes, UUIDV4 } from 'sequelize';
+import sequelize from './index';
+
+interface CategoryAttributes {
+  id: number;
+  name: string;
+  description?: string;
+}
+
+export interface CategoryCreationAttributes extends Optional<CategoryAttributes, 'id'> {}
+
+export class Category extends Model<CategoryAttributes, CategoryCreationAttributes> implements CategoryAttributes {
+  public id!: number;
+  public name!: string;
+  public description!: string;
+}
+
+Category.init(
+  {
+    id: {
+      type: DataTypes.UUID,
+      defaultValue: UUIDV4,
+      primaryKey: true,
+      autoIncrement: true,
+    },
+    name: {
+      type: DataTypes.STRING,
+      allowNull: false,
+    },
+    description: {
+      type: DataTypes.TEXT,
+      allowNull: true,
+    },
+  },
+  {
+    sequelize,
+    modelName: 'Category',
+    tableName: 'categories',
+    timestamps: true,
+  }
+);

src/database/models/Product.ts

@@ -0,0 +1,72 @@
+import { Model, Optional, DataTypes } from 'sequelize';
+import sequelize from './index';
+import { UUIDV4 } from 'sequelize';
+import { Category } from './Category';
+
+interface ProductAttributes {
+  id: number;
+  name: string;
+  description: string;
+  price: number;
+  discount?: number;
+  categoryId: string;
+  createdAt?: Date;
+  updatedAt?: Date;
+  images: string[];
+}
+
+export interface ProductCreationAttributes extends Optional<ProductAttributes, 'id'> {}
+
+export class Product extends Model<ProductAttributes, ProductCreationAttributes> implements ProductAttributes {
+  public id!: number;
+  public name!: string;
+  public description!: string;
+  public price!: number;
+  public discount!: number;
+  public categoryId!: string;
+  public images!: string[];
+  public readonly createdAt!: Date | undefined;
+  public readonly updatedAt!: Date | undefined;
+}
+
+Product.init(
+  {
+    id: {
+      type: DataTypes.UUID,
+      defaultValue: UUIDV4,
+      autoIncrement: true,
+      primaryKey: true,
+    },
+    name: {
+      type: DataTypes.STRING,
+      allowNull: false,
+    },
+    description: {
+      type: DataTypes.TEXT,
+      allowNull: false,
+    },
+    price: {
+      type: DataTypes.FLOAT,
+      allowNull: false,
+    },
+    discount: {
+      type: DataTypes.FLOAT,
+      allowNull: true,
+      defaultValue: 0, // Default discount is 0
+    },
+    images: {
+      type: DataTypes.ARRAY(DataTypes.STRING),
+      allowNull: false,
+    },
+    categoryId: {
+      type: DataTypes.UUID,
+      references: {
+        model: 'Category',
+        key: 'id',
+      },
+    },
+  },
+  { sequelize: sequelize, timestamps: true, modelName: 'Product', tableName: 'products' }
+);
+
+Product.belongsTo(Category, { foreignKey: 'categoryId' });

src/database/seeders/20240429200629-add-seller-role.js

@@ -0,0 +1,23 @@
+/* eslint-disable @typescript-eslint/no-unused-vars */
+'use strict';
+
+const { v4: uuidv4 } = require('uuid');
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  up: async (queryInterface, Sequelize) => {
+    return queryInterface.bulkInsert('Roles', [
+      {
+        id: uuidv4(),
+        name: 'seller',
+        displayName: 'Seller Role',
+        createdAt: new Date(),
+        updatedAt: new Date(),
+      },
+    ]);
+  },
+
+  down: async (queryInterface, Sequelize) => {
+    return queryInterface.bulkDelete('Roles', { name: 'seller' });
+  },
+};