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renamed book to product + added handler products ( express )

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This commit is contained in:
Vic 2022-05-17 20:12:58 +02:00
parent 8325982227
commit 7e29c42080
7 changed files with 171 additions and 89 deletions
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2
migrations/sqls/20220514223735-books-table-down.sql
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@ -1,2 +1,2 @@
/* Replace with your SQL commands */
drop TABLE books
drop TABLE products

2
migrations/sqls/20220514223735-books-table-up.sql
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@ -1,5 +1,5 @@
/* Replace with your SQL commands */
CREATE TABLE books (
CREATE TABLE products (
id SERIAL PRIMARY KEY,
title VARCHAR(150),
author VARCHAR(255),

63
src/handlers/products.ts Normal file
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@ -0,0 +1,63 @@
import express, {request, Request, response, Response} from 'express'
import { Product, ProductStore } from '../models/product'
const productRoutes = (app: express.Application) => {
app.get('/products', index)
app.get('/products/:id', show)
app.post('/products', create)
app.delete('/products/:id', destroy)
app.post('/products/:id/')
}
const store = new ProductStore()
const index = async (_req: Request, res: Response) => {
const products = await store.index();
res.json(products);
}
const show = async (req: Request, res: Response) => {
const product = await store.show(req.params.id)
res.json(product)
}
const create = async (req: Request, res: Response) => {
try {
const productInfo: Product = {
title: request.body.title,
author: request.body.author,
pages: request.body.pages,
price: request.body.price
}
const newProduct = await store.create(productInfo);
res.json(newProduct)
} catch (err) {
res.status(400)
res.json(err)
}
}
const update = async (req: Request, res: Response) => {
try {
const product = await store.update(req.body);
res.json({
title: request.body.title,
author: request.body.author,
pages: request.body.pages,
price: request.body.price
})
} catch (err) {
throw new Error(`Can't update product. ${err}`)
}
}
const destroy = async (req: Request, res: Response) => {
const deleted = await store.delete(req.body.id)
res.json(deleted)
}
export default productRoutes

79
src/models/book.ts
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@ -1,79 +0,0 @@
import { Client } from 'pg';
import client from '../database';
//import { Book } from '../types';
export type Book = {
id?: string;
title: string;
author: string;
pages: number;
price: number;
}
export class BookStore {
async index(): Promise<Book[]> {
try {
// @ts-ignore
const conn = await client.connect()
const sql = 'SELECT * FROM books'
const result = await conn.query(sql)
conn.release()
return result.rows
} catch (err) {
throw new Error(`Cannot get any books ${err}`)
}
}
async show(id: string): Promise<Book> {
try {
const sql = 'SELECT * FROM books where id=($1)'
// @ts-ignore
const conn = await client.connect()
const result = await conn.query(sql, [id])
conn.release()
return result.rows[0]
} catch (err) {
throw new Error(`Could not find book ${id}. Error: ${err}`)
}
}
async create(b: Book): Promise<Book> {
try {
const sql = 'INSERT INTO books (title, author, pages, price) VALUES ($1, $2, $3, $4) RETURNING *'
// @ts-ignore
const conn = await client.connect()
const result = await conn.query(sql, [b.title, b.author, b.pages, b.price])
const book = result.rows[0]
conn.release()
return book
} catch (err) {
throw new Error(`Could not add new book ${b.title}. Error: ${err}`)
}
}
async delete(id: string): Promise<Book> {
try {
const sql = 'DELETE FROM books WHERE id=(1$)'
// @ts-ignore
const conn = await client.connect()
const result = await conn.query(sql, [id])
const book = result.rows[0]
conn.release()
return book
} catch (err) {
throw new Error(`Could not delete book ${id}. Error: ${err}`)
}
}
}

92
src/models/product.ts Normal file
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@ -0,0 +1,92 @@
import { Client, Connection } from 'pg';
import client from '../database';
export type Product = {
id?: string;
title: string;
author: string;
pages: number;
price: number;
}
export class ProductStore {
async index(): Promise<Product[]> {
try {
// @ts-ignore
const conn = await client.connect()
const sql = 'SELECT * FROM products;'
const result = await conn.query(sql)
conn.release()
return result.rows
} catch (err) {
throw new Error(`Cannot get any product ${err}`)
}
}
async show(id: string): Promise<Product> {
try {
const sql = 'SELECT * FROM products where id=($1);'
// @ts-ignore
const conn = await client.connect()
const result = await conn.query(sql, [id])
conn.release()
return result.rows[0]
} catch (err) {
throw new Error(`Could not find product ${id}. Error: ${err}`)
}
}
async create(p: Product): Promise<Product> {
try {
const sql = 'INSERT INTO products (title, author, pages, price) VALUES ($1, $2, $3, $4) RETURNING *;'
// @ts-ignore
const conn = await client.connect()
const result = await conn.query(sql, [p.title, p.author, p.pages, p.price])
const product = result.rows[0]
conn.release()
return product
} catch (err) {
throw new Error(`Could not add new product ${p.title}. Error: ${err}`)
}
}
async update(p: Product): Promise<Product> {
try {
const conn = await client.connect();
const result = await conn.query(
'UPDATE products SET title=$1, author=$2, pages=$3, price=$4 where id=$5 returning *;',
[p.title, p.author, p.pages, p.id]
);
conn.release()
return result.rows[0]
} catch (err) {
throw new Error(`could not update product ${p.id}. Error: ${err}`)
}
}
async delete(id: string): Promise<Product> {
try {
const sql = 'DELETE FROM products WHERE id=(1$)'
// @ts-ignore
const conn = await client.connect()
const result = await conn.query(sql, [id])
const product = result.rows[0]
conn.release()
return product
} catch (err) {
throw new Error(`Could not delete product ${id}. Error: ${err}`)
}
}
}

12
src/models/tests/book_spec.ts → src/models/tests/product_spec.ts
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@ -1,6 +1,6 @@
import { Book, BookStore } from '../book'
import { Product, ProductStore } from '../product'
const store = new BookStore()
const store = new ProductStore()
describe("Book store Model", () => {
it('should have an index method', () => {
@ -20,7 +20,7 @@ describe("Book store Model", () => {
expect(store.index).toBeDefined;
});
it('create method should add a book', async () => {
it('create method should add a product', async () => {
const result = await store.create({
title: '1984',
author: 'George Orwell',
@ -37,7 +37,7 @@ describe("Book store Model", () => {
});
});
it('index method should return a list of books', async () => {
it('index method should return a list of products', async () => {
const result = await store.index();
expect(result).toEqual([{
id: "1",
@ -49,7 +49,7 @@ describe("Book store Model", () => {
}]);
});
it('show method should return a book', async () => {
it('show method should return a product', async () => {
const result = await store.show("1");
expect(result).toEqual({
id: "1",
@ -60,7 +60,7 @@ describe("Book store Model", () => {
});
});
it('delete method should remove the book', async () => {
it('delete method should remove the product', async () => {
store.delete("1");
const result = await store.index()

10
src/server.ts
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@ -1,16 +1,22 @@
import express, { Request, Response } from 'express'
import bodyParser from 'body-parser'
import productRoutes from './handlers/products'
const app: express.Application = express()
const address: string = "0.0.0.0:3000"
const port = 3000;
app.use(bodyParser.json())
app.get('/', function (req: Request, res: Response) {
res.send('Hello World!')
res.send('Main API')
})
app.listen(3000, function () {
productRoutes(app)
// Start express server
app.listen(port, function () {
console.log(`starting app on: ${address}`)
})