Scrapper/monitor a PC build price on https://meupc.net

scrapper.go

package main

import (
	"fmt"
	"log"
	"os/exec"
	"regexp"

	"github.com/gocolly/colly/v2"
)

func main() {
	url := "https://meupc.net/build/tH5P3N"

	c := colly.NewCollector(colly.AllowedDomains("meupc.net"))

	var values []string
	reg := regexp.MustCompile("[0-9\\.\\,]+")
	c.OnHTML("tbody.table-responsive-totals", func(e *colly.HTMLElement) {
		e.ForEach("tr td:nth-of-type(2)", func(i int, c *colly.HTMLElement) {
			values = append(values, reg.FindString(c.Text))
		})

		display(values, url)
	})

	c.OnRequest(func(r *colly.Request) {
		fmt.Printf("Visiting: %s \n", r.URL)
	})

	c.OnError(func(_resp *colly.Response, e error) {
		log.Fatal(e.Error())
	})

	c.Visit(url)
}

func display(values []string, url string) {
	notif := fmt.Sprintf("💵 R$ %s | 💳 R$ %s", values[2], values[0])
	icon := "https://www.cyberpowerpc.com/images/cs/eluna242v/CS-450-151_220.png"

	err := exec.Command("terminal-notifier", "-title", "PC Scrapper", "-message", notif, "-open", url, "-sound", "default", "-appIcon", icon).Run()

	if err != nil {
		log.Fatal(err)
	}
}