support lighter spot

docs/lighter/lighter-go-main/client/http/requests.go

@@ -0,0 +1,75 @@
+package http
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+)
+
+func (c *client) parseResultStatus(respBody []byte) error {
+	resultStatus := &ResultCode{}
+	if err := json.Unmarshal(respBody, resultStatus); err != nil {
+		return err
+	}
+	if resultStatus.Code != CodeOK {
+		return errors.New(resultStatus.Message)
+	}
+	return nil
+}
+
+func (c *client) getAndParseL2HTTPResponse(path string, params map[string]any, result interface{}) error {
+	u, err := url.Parse(c.endpoint)
+	if err != nil {
+		return err
+	}
+	u.Path = path
+
+	q := u.Query()
+	for k, v := range params {
+		q.Set(k, fmt.Sprintf("%v", v))
+	}
+	u.RawQuery = q.Encode()
+	resp, err := httpClient.Get(u.String())
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return errors.New(string(body))
+	}
+	if err = c.parseResultStatus(body); err != nil {
+		return err
+	}
+	if err := json.Unmarshal(body, result); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (c *client) GetNextNonce(accountIndex int64, apiKeyIndex uint8) (int64, error) {
+	result := &NextNonce{}
+	err := c.getAndParseL2HTTPResponse("api/v1/nextNonce", map[string]any{"account_index": accountIndex, "api_key_index": apiKeyIndex}, result)
+	if err != nil {
+		return -1, err
+	}
+	return result.Nonce, nil
+}
+
+func (c *client) GetApiKey(accountIndex int64, apiKeyIndex uint8) (string, error) {
+	result := &AccountApiKeys{}
+	err := c.getAndParseL2HTTPResponse("api/v1/apikeys", map[string]any{"account_index": accountIndex, "api_key_index": apiKeyIndex}, result)
+	if err != nil {
+		return "", err
+	}
+	if len(result.ApiKeys) == 0 {
+		return "", fmt.Errorf("no api keys returned")
+	}
+	return result.ApiKeys[0].PublicKey, nil
+}