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