const DB = require('../../database/mysql');

const { Product } = DB;

class ProductService {
    static async createProduct(data) {
        return Product.create(data);
    }

    static async getAllProducts() {
        return Product.findAll({
            order: [['createdAt', 'DESC']],
        });
    }

    static async getProductsByUserId(ownerId) {
        return Product.findAll({
            where: { ownerId },
            include: [
                {
                    model: DB.User,
                    as: 'owner',
                    attributes: ['username', 'email'],
                },
            ],
            order: [['createdAt', 'DESC']],
        });
    }

    static async getProductBySlug(slug) {
        const products = await Product.findAll({
            where: { slug },
            include: [
                { model: DB.Category, as: "productCategories", attributes: ["name"], through: { attributes: [] } },
                { model: DB.Tag, as: "productTags", attributes: ["name"], through: { attributes: [] } },
                { model: DB.User, as: "owner", attributes: { exclude: ["email", "phone", "salt", "hash"] } }
            ],
            order: [['createdAt', 'DESC']],
        });
        //let product = products[0];

        return products[0];
    }

    static async getProductsByCategory(category) {
        const limit = 100, offset = 0;

        const products = await Product.findAndCountAll({
            include: [
                { model: DB.Brand, as: "brand", attributes: ["name", "description"] },
                { model: DB.Category, as: "productCategories", attributes: ["slug", "name", "description"], through: { attributes: [] }, ...(category && { where: { slug: category } }), },
                { model: DB.Tag, as: "productTags", attributes: ["name"], through: { attributes: [] } },
                { model: DB.User, as: "owner", attributes: { exclude: ["email", "phone", "salt", "hash"] } }
            ],
            limit: parseInt(limit),
            offset: offset * limit,
            order: [["createdAt", "DESC"]],
            //where: { categoryId: 4 },
            distinct: true,
        });
        /*
        const products = await Product.findAll({
            where: { category },
            include: [
                { model: DB.Category, as: "productCategories", attributes: ["name"], through: { attributes: [] } },
                { model: DB.Tag, as: "productTags", attributes: ["name"], through: { attributes: [] } },
                { model: DB.User, as: "owner", attributes: { exclude: ["email", "phone", "salt", "hash"] } }
            ],
            order: [['createdAt', 'DESC']],
        });
        */
        return products;
    }
}

module.exports = ProductService;