Introduce request package and integrate with exchanges

exchanges/itbit/itbit.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"log"
+	"net/http"
 	"net/url"
 	"strconv"
 	"time"
@@ -12,6 +13,7 @@ import (
 	"github.com/thrasher-/gocryptotrader/common"
 	"github.com/thrasher-/gocryptotrader/config"
 	"github.com/thrasher-/gocryptotrader/exchanges"
+	"github.com/thrasher-/gocryptotrader/exchanges/request"
 	"github.com/thrasher-/gocryptotrader/exchanges/ticker"
 )
 
@@ -28,11 +30,15 @@ const (
 	itbitOrders         = "orders"
 	itbitCryptoDeposits = "cryptocurrency_deposits"
 	itbitWalletTransfer = "wallet_transfers"
+
+	itbitAuthRate   = 0
+	itbitUnauthRate = 0
 )
 
 // ItBit is the overarching type across the ItBit package
 type ItBit struct {
 	exchange.Base
+	*request.Handler
 }
 
 // SetDefaults sets the defaults for the exchange
@@ -50,6 +56,8 @@ func (i *ItBit) SetDefaults() {
 	i.ConfigCurrencyPairFormat.Uppercase = true
 	i.AssetTypes = []string{ticker.Spot}
 	i.SupportsAutoPairUpdating = false
+	i.Handler = new(request.Handler)
+	i.SetRequestHandler(i.Name, itbitAuthRate, itbitUnauthRate, new(http.Client))
 }
 
 // Setup sets the exchange parameters from exchange config
@@ -95,8 +103,7 @@ func (i *ItBit) GetTicker(currencyPair string) (Ticker, error) {
 	var response Ticker
 	path := fmt.Sprintf("%s/%s/%s/%s", itbitAPIURL, itbitMarkets, currencyPair, itbitTicker)
 
-	return response,
-		common.SendHTTPGetRequest(path, true, i.Verbose, &response)
+	return response, i.SendHTTPRequest(path, &response)
 }
 
 // GetOrderbook returns full order book for the specified market.
@@ -105,8 +112,7 @@ func (i *ItBit) GetOrderbook(currencyPair string) (OrderbookResponse, error) {
 	response := OrderbookResponse{}
 	path := fmt.Sprintf("%s/%s/%s/%s", itbitAPIURL, itbitMarkets, currencyPair, itbitOrderbook)
 
-	return response,
-		common.SendHTTPGetRequest(path, true, i.Verbose, &response)
+	return response, i.SendHTTPRequest(path, &response)
 }
 
 // GetTradeHistory returns recent trades for a specified market.
@@ -118,8 +124,7 @@ func (i *ItBit) GetTradeHistory(currencyPair, timestamp string) (Trades, error)
 	req := "trades?since=" + timestamp
 	path := fmt.Sprintf("%s/%s/%s/%s", itbitAPIURL, itbitMarkets, currencyPair, req)
 
-	return response,
-		common.SendHTTPGetRequest(path, true, i.Verbose, &response)
+	return response, i.SendHTTPRequest(path, &response)
 }
 
 // GetWallets returns information about all wallets associated with the account.
@@ -142,8 +147,14 @@ func (i *ItBit) CreateWallet(walletName string) (Wallet, error) {
 	params["userId"] = i.ClientID
 	params["name"] = walletName
 
-	return resp,
-		i.SendAuthenticatedHTTPRequest("POST", "/"+itbitWallets, params, &resp)
+	err := i.SendAuthenticatedHTTPRequest("POST", "/"+itbitWallets, params, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
 }
 
 // GetWallet returns wallet information by walletID
@@ -151,7 +162,14 @@ func (i *ItBit) GetWallet(walletID string) (Wallet, error) {
 	resp := Wallet{}
 	path := fmt.Sprintf("/%s/%s", itbitWallets, walletID)
 
-	return resp, i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	err := i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
 }
 
 // GetWalletBalance returns balance information for a specific currency in a
@@ -160,7 +178,14 @@ func (i *ItBit) GetWalletBalance(walletID, currency string) (Balance, error) {
 	resp := Balance{}
 	path := fmt.Sprintf("/%s/%s/%s/%s", itbitWallets, walletID, itbitBalances, currency)
 
-	return resp, i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	err := i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
 }
 
 // GetWalletTrades returns all trades for a specified wallet.
@@ -169,7 +194,14 @@ func (i *ItBit) GetWalletTrades(walletID string, params url.Values) (Records, er
 	url := fmt.Sprintf("/%s/%s/%s", itbitWallets, walletID, itbitTrades)
 	path := common.EncodeURLValues(url, params)
 
-	return resp, i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	err := i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
 }
 
 // GetFundingHistory returns all funding history for a specified wallet.
@@ -178,7 +210,14 @@ func (i *ItBit) GetFundingHistory(walletID string, params url.Values) (FundingRe
 	url := fmt.Sprintf("/%s/%s/%s", itbitWallets, walletID, itbitFundingHistory)
 	path := common.EncodeURLValues(url, params)
 
-	return resp, i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	err := i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
 }
 
 // PlaceOrder places a new order
@@ -198,7 +237,14 @@ func (i *ItBit) PlaceOrder(walletID, side, orderType, currency string, amount, p
 		params["clientOrderIdentifier"] = clientRef
 	}
 
-	return resp, i.SendAuthenticatedHTTPRequest("POST", path, params, &resp)
+	err := i.SendAuthenticatedHTTPRequest("POST", path, params, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
 }
 
 // GetOrder returns an order by id.
@@ -207,7 +253,14 @@ func (i *ItBit) GetOrder(walletID string, params url.Values) (Order, error) {
 	url := fmt.Sprintf("/%s/%s/%s", itbitWallets, walletID, itbitOrders)
 	path := common.EncodeURLValues(url, params)
 
-	return resp, i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	err := i.SendAuthenticatedHTTPRequest("GET", path, nil, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
 }
 
 // CancelOrder cancels and open order. *This is not a guarantee that the order
@@ -225,7 +278,14 @@ func (i *ItBit) GetDepositAddress(walletID, currency string) (CryptoCurrencyDepo
 	params := make(map[string]interface{})
 	params["currency"] = currency
 
-	return resp, i.SendAuthenticatedHTTPRequest("POST", path, params, &resp)
+	err := i.SendAuthenticatedHTTPRequest("POST", path, params, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
 }
 
 // WalletTransfer transfers funds between wallets.
@@ -239,7 +299,19 @@ func (i *ItBit) WalletTransfer(walletID, sourceWallet, destWallet string, amount
 	params["amount"] = strconv.FormatFloat(amount, 'f', -1, 64)
 	params["currencyCode"] = currency
 
-	return resp, i.SendAuthenticatedHTTPRequest("POST", path, params, &resp)
+	err := i.SendAuthenticatedHTTPRequest("POST", path, params, &resp)
+	if err != nil {
+		return resp, err
+	}
+	if resp.Description != "" {
+		return resp, errors.New(resp.Description)
+	}
+	return resp, nil
+}
+
+// SendHTTPRequest sends an unauthenticated HTTP request
+func (i *ItBit) SendHTTPRequest(path string, result interface{}) error {
+	return i.SendPayload("GET", path, nil, nil, result, false, i.Verbose)
 }
 
 // SendAuthenticatedHTTPRequest sends an authenticated request to itBit
@@ -290,19 +362,5 @@ func (i *ItBit) SendAuthenticatedHTTPRequest(method string, path string, params
 	headers["X-Auth-Nonce"] = nonce
 	headers["Content-Type"] = "application/json"
 
-	resp, err := common.SendHTTPRequest(method, url, headers, bytes.NewBuffer([]byte(PayloadJSON)))
-	if err != nil {
-		return err
-	}
-
-	if i.Verbose {
-		log.Printf("Received raw: \n%s\n", resp)
-	}
-
-	errCapture := GeneralReturn{}
-	if err := common.JSONDecode([]byte(resp), &errCapture); err == nil {
-		return errors.New(errCapture.Description)
-	}
-
-	return common.JSONDecode([]byte(resp), result)
+	return i.SendPayload(method, url, headers, bytes.NewBuffer([]byte(PayloadJSON)), result, true, i.Verbose)
 }