Btcprice is a fast, simple and clean way to get the price of Bitcoin. The package uses the Blockchain API as a source of the price. Btcprice can be used with custom source of data too.
To install btcprice, use go get.
$ go get github.com/kplachkov/btcprice/$ godoc github.com/kplachkov/btcprice/package main
import (
"fmt"
"log"
"time"
"github.com/kplachkov/btcprice"
)
// Prints the time and the price of Bitcoin.
func printBtcPriceAndTime(btcPrice float64, t time.Time) {
fmt.Println(t.Format(time.RFC3339))
fmt.Println("Bitcoin price:", btcPrice)
}
// Checks for changes in the price of Bitcoin.
func checkBtcPrice(timeDuration time.Duration) {
blockchain, serErr := btcprice.NewBlockchainService()
if serErr != nil {
log.Fatal(serErr)
}
btcPrice := blockchain.BitcoinPrice.Usd.Last // The latest price of Bitcoin.
printBtcPriceAndTime(btcPrice, time.Now())
// Prints the time and the latest Bitcoin price if the price has changed.
for t := range time.NewTicker(timeDuration).C {
newBtcErr := blockchain.Update(nil)
if newBtcErr != nil {
log.Fatal(newBtcErr)
}
newBtcPrice := blockchain.BitcoinPrice.Usd.Last
// If the price has changed, it prints the time and up to date price.
if btcPrice != newBtcPrice {
printBtcPriceAndTime(newBtcPrice, t)
}
btcPrice = newBtcPrice
}
}
func main() {
checkBtcPrice(time.Second) // Check the price of Bitcoin every second.
}BSD 3-Clause
Copyright (c) 2018-Present, kplachkov