151 lines
3 KiB
Go
151 lines
3 KiB
Go
package api
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import (
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"fmt"
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"golang.org/x/net/html"
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"log/slog"
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"net/http"
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"regexp"
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)
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type GogFrontStruct struct {
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url string
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baseUrl string
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idPrefix string
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headers map[string]string
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deals DealsMap
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logger *slog.Logger
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}
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func NewGogFrontApi(logger *slog.Logger) GogFrontStruct {
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gog := GogFrontStruct{
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url: "https://www.gog.com/",
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baseUrl: "https://www.gog.com/game/",
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idPrefix: "gog-",
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headers: make(map[string]string),
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deals: make(map[string]Deal),
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logger: logger,
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}
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gog.headers["Accept-Language"] = "en"
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gog.headers["User-Agent"] = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:93.0) Gecko/20100101 Firefox/93.0"
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return gog
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}
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func (e GogFrontStruct) Load() error {
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client := &http.Client{}
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// might have to add a cookie at a later time but currently works without
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// "Cookie", "gog_lc=GB_GBP_en-US" or "Accept-Language", "en"
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reqStore, err := http.NewRequest("GET", e.url, nil)
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if err != nil {
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return err
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}
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for key, value := range e.headers {
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reqStore.Header.Set(key, value)
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}
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resStore, err := client.Do(reqStore)
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if err != nil {
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return err
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}
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bodyStore := html.NewTokenizer(resStore.Body)
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regexAppid, err := regexp.Compile(`/\w{2}/game/([-\w]+)`)
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if err != nil {
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return err
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}
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var appIDs []string
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func() {
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for {
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tt := bodyStore.Next()
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switch {
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case tt == html.ErrorToken:
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// file end or error
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return
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case tt == html.StartTagToken:
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t := bodyStore.Token()
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if t.Data != "a" {
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continue
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}
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for _, a := range t.Attr {
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if !(a.Key == "id" && a.Val == "giveaway") {
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continue
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}
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for _, attr := range t.Attr {
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if attr.Key != "ng-href" {
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continue
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}
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appID := regexAppid.FindStringSubmatch(attr.Val)
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if len(appID) < 1 {
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continue
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}
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appIDs = append(appIDs, appID[1])
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}
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}
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}
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}
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}()
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for _, appID := range appIDs {
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reqGame, err := http.NewRequest("GET", fmt.Sprintf("%v%v", e.baseUrl, appID), nil)
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if err != nil {
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return err
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}
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for key, value := range e.headers {
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reqGame.Header.Set(key, value)
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}
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resGame, err := client.Do(reqGame)
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if err != nil {
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return err
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}
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bodyGame := html.NewTokenizer(resGame.Body)
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func() {
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for {
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tt := bodyGame.Next()
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switch {
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case tt == html.ErrorToken:
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// file end or error
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return
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case tt == html.StartTagToken:
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t := bodyGame.Token()
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if t.Data != "h1" {
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continue
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}
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for _, a := range t.Attr {
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if !(a.Key == "class" && a.Val == "productcard-basics__title") {
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continue
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}
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if tt = bodyGame.Next(); tt != html.TextToken {
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continue
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}
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id := fmt.Sprintf("%v%v", e.idPrefix, appID)
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title := bodyGame.Token().Data
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url := fmt.Sprintf("%v%v", e.baseUrl, appID)
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e.deals[id] = Deal{
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Id: id,
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Title: title,
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Url: url,
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}
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}
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}
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}
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}()
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}
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return nil
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}
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func (e GogFrontStruct) Get() []Deal {
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var deals []Deal
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for _, deal := range e.deals {
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deals = append(deals, deal)
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}
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return deals
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}
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