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81 lines
1.4 KiB
Go
81 lines
1.4 KiB
Go
package btc
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import (
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"encoding/json"
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"errors"
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"fmt"
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"log"
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"math"
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"net/http"
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"net/url"
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"git.sp4ke.com/sp4ke/bit4sat/config"
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)
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const (
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BitcoinAverageAPI = "https://apiv2.bitcoinaverage.com"
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BTCMsatRatio = float64(100000000000)
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)
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var FixedRates = map[string]float64{
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"BTC": 1,
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}
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func ToMsat(currency string, amount float64) (int64, error) {
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rate, err := getRate(currency)
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if err != nil {
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return -1, err
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}
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return int64(math.Round((amount / rate) * BTCMsatRatio)), nil
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}
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func getRate(currency string) (float64, error) {
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pairName := "BTC" + currency
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reqParams := url.Values{}
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reqParams.Set("crypto", "BTC")
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reqParams.Set("fiat", currency)
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reqUri := fmt.Sprintf("%s/indices/global/ticker/short?%s",
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BitcoinAverageAPI, reqParams.Encode())
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// TODO: remove on prod and use normal client
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// Used for connectivity problems
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client := &http.Client{}
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if config.Env == "dev" {
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proxyUrl, err := url.Parse(config.HttpProxy)
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if err != nil {
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log.Fatal(err)
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}
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client.Transport = &http.Transport{
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Proxy: http.ProxyURL(proxyUrl),
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}
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}
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resp, err := client.Get(reqUri)
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if err != nil {
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return -1, err
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}
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var data map[string]interface{}
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dec := json.NewDecoder(resp.Body)
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err = dec.Decode(&data)
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if err != nil {
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log.Fatal(err)
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}
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pair := data[pairName]
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price, ok := pair.(map[string]interface{})["last"].(float64)
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if !ok {
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return -1, errors.New("bitcoinaverage parsing result")
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}
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return price, nil
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}
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