Initial commit

Includes:
SCG parser
MTG cards search

cardsinfo/scgprices.go

@@ -0,0 +1,56 @@
+package cardsinfo
+
+import (
+	"errors"
+	"github.com/antchfx/htmlquery"
+	"strconv"
+	"strings"
+)
+
+const SCGURL = "http://www.starcitygames.com/results?name="
+
+func GetSCGPrices(name string) ([]CardPrice, error) {
+	splitted := strings.Split(name, " ")
+	scgName := strings.Join(splitted, "+")
+	url := SCGURL + scgName
+	doc, err := htmlquery.LoadURL(url)
+	if err != nil {
+		return nil, err
+	}
+	nodesOdd := htmlquery.Find(doc, "//tr[contains(@class, 'deckdbbody_row')]")
+	nodesEven := htmlquery.Find(doc, "//tr[contains(@class, 'deckdbbody2_row')]")
+	nodes := append(nodesOdd, nodesEven...)
+	prices := make([]CardPrice, 0)
+	for _, node := range nodes {
+		nameNode := htmlquery.FindOne(node, "//td[contains(@class, 'search_results_1')]")
+		if nameNode == nil {
+			continue
+		}
+		name := htmlquery.InnerText(nameNode)
+		priceNode := htmlquery.FindOne(node, "//td[contains(@class, 'search_results_9')]")
+		if priceNode == nil {
+			continue
+		}
+		priceS := htmlquery.InnerText(priceNode)
+		price, err := fetchPrice(priceS)
+		if err != nil {
+			continue
+		}
+		obj := CardPrice{
+			Name:  name,
+			Price: price,
+		}
+		prices = append(prices, obj)
+	}
+	return prices, nil
+}
+
+func fetchPrice(price string) (float64, error) {
+	split := strings.Split(price, "$")
+	if len(split) < 2 {
+		return 0, errors.New("Not enough values")
+	}
+	p := split[1]
+	v, err := strconv.ParseFloat(p, 64)
+	return v, err
+}