Added error handling if SCG returns non-200 HTTP status code

cardsinfo/names.go

@@ -37,7 +37,9 @@ func GetCardByUrl(path string) string {
 	if err != nil {
 		return ""
 	}
-	defer response.Body.Close()
+	defer func() {
+		_ = response.Body.Close()
+	}()
 	data, err := ioutil.ReadAll(response.Body)
 	if err != nil {
 		return ""

cardsinfo/scgprices.go

@@ -2,8 +2,10 @@ package cardsinfo
 
 import (
 	"encoding/json"
+	"errors"
 	"github.com/antchfx/htmlquery"
 	"golang.org/x/net/html"
+	"golang.org/x/net/html/charset"
 	"io/ioutil"
 	"net/http"
 	"strings"
@@ -16,13 +18,31 @@ const MaxCards = 4
 func GetSCGPrices(name string) ([]CardPrice, error) {
 	preprocessedName := preprocessNameForSearch(name)
 	url := getSCGUrl(preprocessedName)
-	doc, err := htmlquery.LoadURL(url)
+	doc, err := getScgHTML(url)
 	if err != nil {
 		return nil, err
 	}
 	return fetchPrices(doc)
 }
 
+func getScgHTML(url string) (*html.Node, error) {
+	response, err := http.Get(url)
+	defer func() {
+		_ = response.Body.Close()
+	}()
+
+	if response.StatusCode != http.StatusOK {
+		return nil, errors.New("not ok status")
+	}
+
+	r, err := charset.NewReader(response.Body, response.Header.Get("Content-Type"))
+	if err != nil {
+		return nil, err
+	}
+
+	return html.Parse(r)
+}
+
 func preprocessNameForSearch(name string) string {
 	return strings.Split(name, "|")[0]
 }
@@ -119,8 +139,7 @@ func getPriceById(id string) float64 {
 }
 
 func getSCGUrl(name string) string {
-	words := strings.Split(name, " ")
+	scgName := strings.Replace(name, " ", "+", -1)
-	scgName := strings.Join(words, "+")
 	url := Scgurl + scgName
 	return url
 }

vk/message.go

@@ -20,7 +20,7 @@ func Message(userId int64, message string) {
 		"peer_id=" + strconv.FormatInt(userId, 10),
 		"message=" + url.QueryEscape(message),
 		"v=5.95",
-		"random_id=" + strconv.FormatInt(int64(randomId), 10),
+		"random_id=" + strconv.FormatInt(randomId, 10),
 	}
 	paramString := strings.Join(params, "&")
 	resp, err := http.Get(SendMessageUrl + "?" + paramString)