add a price for the Beetroot jetton

Author: zakhar-petukhov

pkg/rates/sources.go

@@ -18,6 +18,7 @@ func (m *Mock) GetCurrentRates() (map[string]float64, error) {
 	const (
 		tonstakers string = "tonstakers"
 		bemo       string = "bemo"
+		beetroot   string = "beetroot"
 		slpTokens  string = "slp_tokens"
 	)
 
@@ -58,7 +59,11 @@ func (m *Mock) GetCurrentRates() (map[string]float64, error) {
 			pools[account] = price
 		}
 	}
-	pools = m.updatePools(pools)
+	if beetRootPrice, err := retry(beetroot, medianTonPriceToUsd, pools, m.getBeetrootPrice); err == nil {
+		for account, price := range beetRootPrice {
+			pools[account] = price
+		}
+	}
 	if slpTokensPrice, err := retry(slpTokens, medianTonPriceToUsd, pools, m.getSlpTokensPrice); err == nil {
 		for account, price := range slpTokensPrice {
 			pools[account] = price
@@ -221,3 +226,40 @@ func (m *Mock) getSlpTokensPrice(tonPrice float64, pools map[ton.AccountID]float
 
 	return accountsPrice, nil
 }
+
+func (m *Mock) getBeetrootPrice(tonPrice float64, pools map[ton.AccountID]float64) (map[tongo.AccountID]float64, error) {
+	if tonPrice == 0 {
+		return map[ton.AccountID]float64{}, fmt.Errorf("unknown TON price")
+	}
+	var beetRootContract = ton.MustParseAccountID("EQDC8MY5tY5rPM6KFFxz58fMUES6qSsFxi_Pbaig1QuO3F7y")
+	var beetRootAccount = ton.MustParseAccountID("EQAFGhmx199oH6kmL78PGBHyAx4d5CiJdfXwSjDK5F5IFyfC")
+	url := fmt.Sprintf("https://tonapi.io/v2/blockchain/accounts/%v/methods/get_price_data", beetRootContract)
+	respBody, err := sendRequest(url, m.TonApiToken)
+	if err != nil {
+		return map[ton.AccountID]float64{}, err
+	}
+	defer respBody.Close()
+	type data struct {
+		Success bool `json:"success"`
+		Stack   []struct {
+			Num string `json:"num"`
+		} `json:"stack"`
+	}
+	var result data
+	if err = json.NewDecoder(respBody).Decode(&result); err != nil {
+		return map[ton.AccountID]float64{}, fmt.Errorf("[getBeetrootPrice] failed to decode response: %v", err)
+	}
+	if !result.Success {
+		return map[ton.AccountID]float64{}, fmt.Errorf("not success")
+	}
+	if len(result.Stack) == 0 {
+		return map[ton.AccountID]float64{}, fmt.Errorf("empty stack")
+	}
+	num, err := strconv.ParseInt(result.Stack[0].Num, 0, 64)
+	if err != nil {
+		return map[tongo.AccountID]float64{}, err
+	}
+	usdPrice := float64(num) / 100
+	price := usdPrice / tonPrice
+	return map[ton.AccountID]float64{beetRootAccount: price}, nil
+}