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92 lines
2.1 KiB
TypeScript
92 lines
2.1 KiB
TypeScript
import client from "../database";
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export type Product = {
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id?: number;
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name: string;
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price: number;
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};
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export class ProductStore {
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async index(): Promise<Product[]> {
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try {
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const conn = await client.connect();
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const sql = "SELECT * FROM products";
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const result = await conn.query(sql);
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const products = result.rows;
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conn.release();
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return products;
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} catch (err) {
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throw new Error(`Cannot get any products ${err}`);
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}
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}
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async read(id: number): Promise<Product> {
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try {
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const conn = await client.connect();
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const sql = "SELECT * FROM products WHERE id=($1)";
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const result = await conn.query(sql, [id]);
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const product = result.rows[0];
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conn.release();
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return product;
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} catch (err) {
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throw new Error(`Could not find product ${id}. Error: ${err}`);
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}
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}
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async create(p: Product): Promise<Product> {
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try {
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const conn = await client.connect();
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const sql =
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"INSERT INTO products (name, price) VALUES ($1, $2) RETURNING *";
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const result = await conn.query(sql, [p.name, p.price]);
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const product = result.rows[0];
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conn.release();
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return product;
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} catch (err) {
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throw new Error(`Could not add a new product ${p.name}. Error: ${err}`);
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}
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}
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async update(p: Product): Promise<Product> {
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try {
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const conn = await client.connect();
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const sql =
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"UPDATE products SET name=$1, price=$2 WHERE id=$3 RETURNING *";
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const result = await conn.query(sql, [p.name, p.price, p.id]);
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const product = result.rows[0];
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conn.release();
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return product;
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} catch (err) {
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throw new Error(`Could not update product ${p.id}. Error: ${err}`);
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}
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}
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async delete(id: number): Promise<Product> {
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try {
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const conn = await client.connect();
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const sql = "DELETE FROM products WHERE id=($1)";
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const result = await conn.query(sql, [id]);
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const product = result.rows[0];
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conn.release();
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return product;
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} catch (err) {
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throw new Error(`Could not delete product ${id}. Error: ${err}`);
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}
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}
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}
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