refactor(swap): change ICY amount to use float64 type

Author: lmquang

internal/handler/swap/swap.go

@@ -154,15 +154,15 @@ func (h *handler) CreateSwapRequest(c *gin.Context) {
 		return
 	}
 
-	icyAmountInt, err := strconv.ParseInt(req.ICYAmount, 10, 64)
+	icyAmountFloat, err := strconv.ParseFloat(req.ICYAmount, 64)
 	if err != nil {
 		h.logger.Error("[CreateSwapRequest][ParseFloat]", map[string]string{
 			"error": err.Error(),
 		})
 		c.JSON(http.StatusBadRequest, view.CreateResponse[any](nil, err, req, "invalid ICY amount"))
 		return
 	}
-	if icyAmountInt < h.appConfig.MinIcySwapAmount {
+	if float64(icyAmountFloat) < h.appConfig.MinIcySwapAmount {
 		c.JSON(http.StatusBadRequest, view.CreateResponse[any](nil, fmt.Errorf("minimum ICY amount is %v", h.appConfig.MinIcySwapAmount), nil, "invalid ICY amount"))
 		return
 	}

internal/utils/config/config.go

@@ -16,7 +16,7 @@ type AppConfig struct {
 	Bitcoin          BitcoinConfig
 	Blockchain       BlockchainConfig
 	IndexInterval    string
-	MinIcySwapAmount int64
+	MinIcySwapAmount float64
 }
 
 type ApiServerConfig struct {
@@ -87,7 +87,7 @@ func New() *AppConfig {
 			IcySwapSignerPrivateKey:   os.Getenv("BLOCKCHAIN_SWAP_SIGNER_PRIVATE_KEY"),
 		},
 		IndexInterval:    os.Getenv("INDEX_INTERVAL"),
-		MinIcySwapAmount: int64(envVarAtoi("MIN_ICY_SWAP_AMOUNT")),
+		MinIcySwapAmount: envVarAsFloat("MIN_ICY_SWAP_AMOUNT", 1000000000000000000),
 	}
 }
 
@@ -115,6 +115,16 @@ func envVarAtoi(envName string) int {
 	return value
 }
 
+func envVarAsInt64(envName string) int64 {
+	valueStr := os.Getenv(envName)
+	value, err := strconv.ParseInt(valueStr, 10, 64)
+	if err != nil {
+		panic(err)
+	}
+
+	return value
+}
+
 func envVarAsBool(envName string) bool {
 	valueStr := os.Getenv(envName)
 	return valueStr == "true"