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steamChartPage.go
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steamChartPage.go
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package main
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"os"
"os/user"
"path/filepath"
"regexp"
"strconv"
"strings"
"time"
"github.com/PuerkitoBio/goquery"
)
type SteamChartPage struct {
Delta time.Time `json:"delta"`
Growth []SteamChartGameGrowth `json:"growth"`
Name string `json:"name"`
PlayerPeak24Hour int `json:"player_peak_24_hour"`
PlayerPeakAll int `json:"player_peek_all"`
PlayerPeakDelta int `json:"player_peek_delta"`
Timestamp time.Time `json:"timestamp"`
URL string `json:"URL"`
}
func NewSteamChartPage(s *goquery.Selection) *SteamChartPage {
return &SteamChartPage{
Delta: scrapeSteamChartGameDelta(s),
Growth: scrapeSteamChartGameGrowth(s),
Name: scrapeSteamChartGameName(s),
PlayerPeakAll: scrapeSteamChartGamePlayerPeakAll(s),
PlayerPeak24Hour: scrapeSteamChartGamePlayerPeak24Hour(s),
PlayerPeakDelta: scrapeSteamChartGamePlayerPeakDelta(s)}
}
func onGetSteamChartPage(c *http.Client, URL string, revisit bool, snap func(s *Snapshot), success func(s *SteamChartPage), err func(e error)) {
if revisit == false {
if u, err := url.Parse(URL); err == nil {
if ok, _ := hasVisitedURLDefault(u); ok {
return
}
}
}
snapshot := NewSnapshot(c, http.MethodGet, URL, nil)
snap(snapshot)
if ok := (snapshot.StatusCode == http.StatusOK); ok != true {
err(errors.New(snapshot.Status))
return
}
if ok := (snapshot.document != nil); ok != true {
err(snapshot.ErrDoc)
return
}
CSSSelector := "html"
goQuerySelection := snapshot.document.Find(CSSSelector)
goQuerySelectionLength := goQuerySelection.Length()
if ok := (goQuerySelectionLength > 0); ok != true {
err(errors.New("goquery.Selection empty"))
return
}
steamChartPage := NewSteamChartPage(goQuerySelection)
if ok := len(steamChartPage.Name) > 0; ok != true {
err(errors.New("SteamChart.AppID negative"))
return
}
success(steamChartPage)
}
func scrapeSteamChartGameDelta(s *goquery.Selection) time.Time {
t, err := time.Parse(time.RFC3339, strings.TrimSpace(s.Find("div.app-stat abbr.timeago").Text()))
if err != nil {
return time.Time{}
}
return t
}
func scrapeSteamChartGameGrowth(s *goquery.Selection) []SteamChartGameGrowth {
var steamChartGameGrowth []SteamChartGameGrowth
s.Find("table.common-table tbody").First().Find("tr").Each(func(i int, s *goquery.Selection) {
steamChartGameGrowth = append(steamChartGameGrowth, NewSteamChartGameGrowth(s))
})
return steamChartGameGrowth
}
func scrapeSteamChartGameName(s *goquery.Selection) string {
return regexp.MustCompile(`[^a-zA-Z0-9]`).ReplaceAllString(strings.TrimSpace(s.Find("#app-title").Text()), "")
}
func scrapeSteamChartGamePlayerPeak24Hour(s *goquery.Selection) int {
n, err := strconv.Atoi(strings.TrimSpace(s.Find("#app-heading div:nth-child(3) span.num").Text()))
if err != nil {
return 0
}
return n
}
func scrapeSteamChartGamePlayerPeakAll(s *goquery.Selection) int {
n, err := strconv.Atoi(strings.TrimSpace(s.Find("#app-heading div:nth-child(4) span.num").Text()))
if err != nil {
return 0
}
return n
}
func scrapeSteamChartGamePlayerPeakDelta(s *goquery.Selection) int {
n, err := strconv.Atoi(strings.TrimSpace(s.Find("#app-heading div:nth-child(2) span.num").Text()))
if err != nil {
return 0
}
return n
}
func writeSteamChartPage(fullpath string, s *SteamChartPage) error {
err := os.MkdirAll(fullpath, os.ModePerm)
if err != nil {
return err
}
if err != nil {
return err
}
b, err := json.Marshal(s)
if err != nil {
return err
}
filename := fmt.Sprintf("chart-result-%s.json", strings.ToLower(s.Name))
fullname := filepath.Join(fullpath, filename)
err = ioutil.WriteFile(fullname, b, os.ModePerm)
return err
}
func writeSteamChartPageDefault(s *SteamChartPage) error {
user, err := user.Current()
if err != nil {
panic(err)
}
fullpath := filepath.Join(user.HomeDir, "Desktop", "steambot", "games", s.Name)
err = writeSteamChartPage(fullpath, s)
return err
}