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113 lines
3.3 KiB
113 lines
3.3 KiB
import { Injectable } from "@nestjs/common"; |
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import { InjectModel } from "@nestjs/sequelize"; |
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import { Product } from "./entities/product.entity"; |
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import { Op } from "sequelize"; |
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import { HttpException, HttpStatus } from "@nestjs/common"; |
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@Injectable() |
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export class ProductsService { |
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constructor(@InjectModel(Product) private readonly productModel: typeof Product) {} |
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async create(name: string, description: string, price: number): Promise<Product> { |
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try { |
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if (!name || !description || price <= 0) { |
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throw new Error("Invalid input data"); |
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} |
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const product = await this.productModel.create({ name, description, price }); |
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return product; |
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} catch (error) { |
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throw new Error("Error creating product"); |
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} |
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} |
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async findAll(search?: string, priceMin?: number, priceMax?: number): Promise<Product[]> { |
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const where: any = {}; |
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try { |
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if (search) { |
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where.name = { |
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[Op.like]: `%${search}%`, |
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}; |
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} |
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if (priceMin || priceMax) { |
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where.price = {}; |
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if (priceMin) where.price[Op.gte] = priceMin; |
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if (priceMax) where.price[Op.lte] = priceMax; |
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} |
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const products = await this.productModel.findAll({ where }); |
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if (!products || products.length === 0) { |
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throw new HttpException("No products found matching the given criteria.", HttpStatus.NOT_FOUND); |
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} |
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return products; |
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} catch (error) { |
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if (error instanceof HttpException) { |
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throw error; |
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} |
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throw new HttpException("An error occurred while retrieving products.", HttpStatus.INTERNAL_SERVER_ERROR); |
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} |
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} |
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async findOne(id: string): Promise<Product> { |
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try { |
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const product = await this.productModel.findByPk(id); |
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if (!product) { |
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throw new HttpException("Product not found with the given id.", HttpStatus.NOT_FOUND); |
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} |
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return product; |
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} catch (error) { |
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if (error instanceof HttpException) { |
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throw error; |
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} |
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throw new HttpException("An error occurred while retrieving the product.", HttpStatus.INTERNAL_SERVER_ERROR); |
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} |
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} |
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async update(id: string, name?: string, description?: string, price?: number): Promise<Product> { |
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try { |
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const product = await this.productModel.findByPk(id); |
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if (!product) { |
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throw new HttpException("Product not found.", HttpStatus.NOT_FOUND); |
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} |
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if (name) product.name = name; |
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if (description) product.description = description; |
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if (price) product.price = price; |
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await product.save(); |
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return product; |
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} catch (error) { |
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if (error instanceof HttpException) { |
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throw error; |
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} |
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throw new HttpException("An error occurred while updating the product.", HttpStatus.INTERNAL_SERVER_ERROR); |
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} |
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} |
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async remove(id: string): Promise<{ message: string }> { |
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try { |
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const product = await this.productModel.findByPk(id); |
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if (!product) { |
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throw new HttpException("Product not found with the given id.", HttpStatus.NOT_FOUND); |
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} |
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await product.destroy(); |
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return { message: "Product deleted successfully." }; |
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} catch (error) { |
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if (error instanceof HttpException) { |
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throw error; |
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} |
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throw new HttpException("An error occurred while deleting the product.", HttpStatus.INTERNAL_SERVER_ERROR); |
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} |
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} |
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}
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