change from coinconvert to coingecko for FIAT conversion

providers/bitcoin/fiat.go

@@ -5,6 +5,7 @@ import (
 	"net/http"
 )
 
+/* // CoinConvert BTC to CAD converter
 // example: https://api.coinconvert.net/convert/btc/cad?amount=1
 const fiatConvertURL = "https://api.coinconvert.net/convert/btc/cad"
 
@@ -39,3 +40,35 @@ func (c *client) ConvertBTCToCAD(amount int) (int, error) {
 	}
 	return (amount * int(fiatConversion.CAD*1000)) / 100000000, nil // one BTC = one hundred million satoshi's
 }
+*/
+
+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 FiatConversion struct {
+	MarketData struct {
+		CurrentPrice struct {
+			CAD int `json:"cad"`
+		} `json:"current_price"`
+	} `json:"market_data"`
+}
+
+func (c *client) ConvertBTCToCAD(amount int) (int, error) {
+	fiatConversion := &FiatConversion{}
+
+	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, fiatConversion)
+	if err != nil {
+		return 0, fmt.Errorf("failed to process response: %v", err)
+	}
+
+	return (amount * int(fiatConversion.MarketData.CurrentPrice.CAD*1000)) / 100000000, nil // one BTC = one hundred million satoshi's
+}