Go Release Archive Size up! up! up!

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"net/http"

	"github.com/PuerkitoBio/goquery"
)

func main() {
	resp := fetch()
	defer func() {
		err := resp.Body.Close()
		if err != nil {
			log.Fatal(err)
		}
	}()
	doc, err := goquery.NewDocumentFromReader(resp.Body)
	if err != nil {
		log.Fatal(err)
	}
	type releaseSize struct {
		version string
		size    string
	}
	var results []releaseSize
	doc.Find(".codetable").Each(func(i int, s *goquery.Selection) {
		s.Find("tbody>tr").Each(func(i int, s *goquery.Selection) {
			var row []string
			s.Find("td").Each(func(indexth int, tablecell *goquery.Selection) {
				row = append(row, tablecell.Text())
			})
			if len(row) == 0 {
				return
			}
			// set your fetch data config
			if row[1] == "Archive" && row[2] == "macOS" {
				results = append(results, releaseSize{
					version: row[0],
					size:    row[4],
				})
			}
		})
	})
	ret := ""
	for j := len(results) - 1; j >= 0; j-- {
		ret += fmt.Sprintf("%s,%s\n", results[j].version, results[j].size[:len(results[j].size)-2])
	}
	ioutil.WriteFile("go-release-history-archive-size.csv", []byte(ret), 0644)
}

func fetch() *http.Response {
	// Generated by curl-to-Go: https://mholt.github.io/curl-to-go

	req, err := http.NewRequest("GET", "https://golang.org/dl/", nil)
	if err != nil {
		// handle err
		panic(err)
	}
	req.Header.Set("Authority", "golang.org")
	req.Header.Set("Cache-Control", "max-age=0")
	req.Header.Set("Upgrade-Insecure-Requests", "1")
	req.Header.Set("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36")
	req.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9")
	req.Header.Set("Sec-Fetch-Site", "same-origin")
	req.Header.Set("Sec-Fetch-Mode", "navigate")
	req.Header.Set("Sec-Fetch-User", "?1")
	req.Header.Set("Sec-Fetch-Dest", "document")
	req.Header.Set("Referer", "https://golang.org/")
	req.Header.Set("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8,zh-TW;q=0.7,ja;q=0.6")
	// 请填写你自己的 cookie
	req.Header.Set("Cookie", "...")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		// handle err
		panic(err)
	}
	return resp
}