/
private.go
130 lines (106 loc) · 3.09 KB
/
private.go
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package mbc
import (
"context"
"crypto/hmac"
"crypto/sha512"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"net/http"
"net/url"
"strings"
"time"
)
var (
privateEndpoint = fmt.Sprintf("%s/tapi/v3/", endpoint)
)
func mac(secret string, body string) string {
h := hmac.New(sha512.New, []byte(secret))
data := fmt.Sprintf("/tapi/v3/?%s", body)
h.Write([]byte(data))
return hex.EncodeToString(h.Sum(nil))
}
func (c *Client) formFor(base, quote, method string) url.Values {
form := url.Values{}
form.Add("tapi_method", method)
form.Add("coin_pair", fmt.Sprintf("%s%s", strings.ToUpper(quote), strings.ToUpper(base)))
form.Add("tapi_nonce", fmt.Sprintf("%d", time.Now().UnixNano()))
return form
}
// ListOrders lists user orders
func (c *Client) ListOrders(ctx context.Context, base string, quote string, opts ...ListOrdersOption) ([]Order, error) {
form := c.formFor(base, quote, "list_orders")
for _, opt := range opts {
opt(form)
}
req, err := http.NewRequestWithContext(ctx, http.MethodPost, privateEndpoint, strings.NewReader(form.Encode()))
if err != nil {
return nil, err
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
req.Header.Add("TAPI-MAC", mac(c.secret, form.Encode()))
req.Header.Add("TAPI-ID", c.id)
res, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
defer res.Body.Close()
var orderD orderD
if err := json.NewDecoder(res.Body).Decode(&orderD); err != nil {
return nil, err
}
if orderD.StatusCode != SuccessCode {
return nil, errors.New(orderD.ErrorMessage)
}
return orderD.ResponseData.Orders, nil
}
func (c Client) getAccountInfo(ctx context.Context) (json.RawMessage, error) {
form := url.Values{}
form.Add("tapi_method", "get_account_info")
form.Add("tapi_nonce", fmt.Sprintf("%d", time.Now().UnixNano()))
req, err := http.NewRequestWithContext(ctx, http.MethodPost, privateEndpoint, strings.NewReader(form.Encode()))
if err != nil {
return nil, err
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
req.Header.Add("TAPI-MAC", mac(c.secret, form.Encode()))
req.Header.Add("TAPI-ID", c.id)
res, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
defer res.Body.Close()
var balances responseD
if err := json.NewDecoder(res.Body).Decode(&balances); err != nil {
return nil, err
}
if balances.StatusCode != 100 {
return nil, errors.New(balances.ErrorMessage)
}
return balances.ResponseData, nil
}
// GetBalances retrieves balances
func (c Client) GetBalances(ctx context.Context) (map[string]Balance, error) {
resp, err := c.getAccountInfo(ctx)
if err != nil {
return nil, err
}
var balance balanceD
if err := json.Unmarshal(resp, &balance); err != nil {
return nil, err
}
return balance.Balances, nil
}
// GetWithdrawalLimits retrieves withdrawal limits
func (c Client) GetWithdrawalLimits(ctx context.Context) (map[string]WithdrawalLimit, error) {
resp, err := c.getAccountInfo(ctx)
if err != nil {
return nil, err
}
var balance balanceD
if err := json.Unmarshal(resp, &balance); err != nil {
return nil, err
}
return balance.WithdrawalLimit, nil
}