replace zxq.co/ripple/hanayo

modules/btcconversions/btcconversions.go

@@ -0,0 +1,54 @@
+package btcconversions
+
+import (
+	"fmt"
+	"net/http"
+	"time"
+
+	"encoding/json"
+
+	"github.com/gin-gonic/gin"
+)
+
+var rates = struct {
+	EUR float64
+	USD float64
+}{
+	// 15m values fetched from blockchain ticker on 2017-02-25
+	1118.33,
+	1180.4,
+}
+
+// GetRates returns the bitcoin rates as JSON.
+func GetRates(c *gin.Context) {
+	c.JSON(200, rates)
+}
+
+func init() {
+	go func() {
+		for {
+			updateRates()
+			time.Sleep(time.Hour)
+		}
+	}()
+}
+
+type blockchainCurrency struct {
+	// The X is necessary a) to make this exported b) because an identifier
+	// can't start with a number.
+	X15m float64 `json:"15m"`
+}
+
+func updateRates() {
+	resp, err := http.Get("https://blockchain.info/ticker")
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	m := make(map[string]blockchainCurrency)
+	json.NewDecoder(resp.Body).Decode(&m)
+
+	rates.EUR = m["EUR"].X15m
+	rates.USD = m["USD"].X15m
+}