package main

import (
	"encoding/json"
	"net/http"
	"strconv"
)

type Product struct {
	ID       int     `json:"id"`
	Name     string  `json:"name"`
	Price    float64 `json:"price"`
	Discount float64 `json:"discount"`
}

var products = []Product{
	{1, "Notebook", 4.50, 0},
	{2, "Pen", 1.20, 0.1},
	{3, "Backpack", 39.00, 0.25},
}

func listProducts(w http.ResponseWriter, r *http.Request) {
	json.NewEncoder(w).Encode(products)
}

func getProduct(w http.ResponseWriter, r *http.Request) {
	id, _ := strconv.Atoi(r.PathValue("id"))
	for _, p := range products {
		if p.ID == id {
			json.NewEncoder(w).Encode(p)
			return
		}
	}
}