package bitcoin import ( "fmt" "net/http" ) const fiatConvertURL = "https://api.coingecko.com/api/v3/coins/bitcoin?localization=false&tickers=false&market_data=true&community_data=false&developer_data=false&sparkline=false" type coinGeckoResponse struct { MarketData struct { CurrentPrice struct { CAD int `json:"cad"` } `json:"current_price"` } `json:"market_data"` } func (c *client) convertBTCToCAD(amount int) (int, error) { coinGeckoData := &coinGeckoResponse{} req, err := http.NewRequest("GET", fiatConvertURL, nil) if err != nil { return 0, fmt.Errorf("failed to create new GET request: %v", err) } res, err := c.httpClient.Do(req) if err != nil { return 0, fmt.Errorf("http GET request failed: %v", err) } err = c.processResponse(res, coinGeckoData) if err != nil { return 0, fmt.Errorf("failed to process response: %v", err) } return (amount * int(coinGeckoData.MarketData.CurrentPrice.CAD*1000)) / 100000000, nil // one BTC = one hundred million satoshi's }