feat(gateio): add GetTicker

cmd/trader/main.go

@@ -435,7 +435,7 @@ func main() {
 			log.Infof("gate.io pairs: %+v", pairs)
 		}
 
-		{
+		if false {
 			marketInfo, err := c.GetMarketInfo(ctx)
 			if err != nil {
 				log.Fatalf("gate.io get market_info failed, err: %v", err)
@@ -444,5 +444,14 @@ func main() {
 			log.Infof("gate.io market_info: %+v", marketInfo)
 		}
 
+		{
+			ethTicker, err := c.GetTicker(ctx, "eth", "btc")
+			if err != nil {
+				log.Fatalf("gate.io get ticker failed, err: %v", err)
+			}
+
+			log.Infof("gate.io get ticker eth-btc: %+v", ethTicker)
+		}
+
 	}
 }

gateio/gateio.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"net/url"
 	"path"
+	"strings"
 
 	"github.com/Akagi201/cryptotrader/model"
 	"github.com/pkg/errors"
@@ -136,3 +137,35 @@ func (c *Client) GetMarketInfo(ctx context.Context) ([]model.MarketInfo, error)
 
 	return marketInfos, nil
 }
+
+// GetTicker 返回最新, 最高, 最低 交易行情和交易量, 每 10 秒钟更新, for http://data.gate.io/api2/1/ticker/[quote]_[base]
+func (c *Client) GetTicker(ctx context.Context, quote string, base string) (*model.Ticker, error) {
+	req, err := c.newRequest(ctx, "GET", "ticker/"+strings.ToUpper(quote)+"_"+strings.ToUpper(base), nil, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	body, err := c.getResponse(req)
+	if err != nil {
+		return nil, err
+	}
+
+	log.Debugf("Response body: %v", string(body))
+
+	buy := gjson.GetBytes(body, "highestBid").Float()
+	sell := gjson.GetBytes(body, "lowestAsk").Float()
+	last := gjson.GetBytes(body, "last").Float()
+	low := gjson.GetBytes(body, "low24hr").Float()
+	high := gjson.GetBytes(body, "high24hr").Float()
+	vol := gjson.GetBytes(body, "baseVolume").Float()
+
+	return &model.Ticker{
+		Buy:  buy,
+		Sell: sell,
+		Last: last,
+		Low:  low,
+		High: high,
+		Vol:  vol,
+		Raw:  string(body),
+	}, nil
+}

okex/okex.go

@@ -90,7 +90,6 @@ func (c *Client) getResponse(req *http.Request) ([]byte, error) {
 
 // GetTicker 获取OKEx最新币币行情数据, for Get /api/v1/ticker.do
 func (c *Client) GetTicker(ctx context.Context, quote string, base string) (*model.Ticker, error) {
-
 	v := url.Values{}
 	v.Set("symbol", strings.ToUpper(quote)+"_"+strings.ToUpper(base))