feat: move fetch prices to status-go (#2595)

services/wallet/api.go

@@ -261,3 +261,8 @@ func (api *API) GetEthereumChains(ctx context.Context, onlyEnabled bool) ([]*par
 	log.Debug("call to GetEthereumChains")
 	return api.s.rpcClient.NetworkManager.Get(onlyEnabled)
 }
+
+func (api *API) FetchPrices(ctx context.Context, symbols []string, currency string) (map[string]float64, error) {
+	log.Debug("call to FetchPrices")
+	return fetchCryptoComparePrices(symbols, currency)
+}

services/wallet/price.go

@@ -0,0 +1,38 @@
+package wallet
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"time"
+)
+
+func fetchCryptoComparePrices(symbols []string, currency string) (map[string]float64, error) {
+	httpClient := http.Client{Timeout: time.Minute}
+
+	url := fmt.Sprintf("https://min-api.cryptocompare.com/data/pricemulti?fsyms=%s&tsyms=%s", strings.Join(symbols, ","), currency)
+	resp, err := httpClient.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	prices := make(map[string]map[string]float64)
+	err = json.Unmarshal(body, &prices)
+	if err != nil {
+		return nil, err
+	}
+
+	result := make(map[string]float64)
+	for _, symbol := range symbols {
+		result[symbol] = prices[strings.ToUpper(symbol)][strings.ToUpper(currency)]
+	}
+	return result, nil
+}