New minor release after complete rewrite.

Brings neat and testable codebase with minimum allocations in mind.

request.go

@@ -0,0 +1,44 @@
+package gql
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+func (c *BaseClient) executeQuery(query []byte, headers any) (result any, err error) {
+	var queryResult queryResults
+	httpRequest, err := http.NewRequest("POST", c.endpoint, bytes.NewBuffer(query))
+	if err != nil {
+		c.Logger.Error(c, "Error while creating http request;", "error", err.Error())
+		return
+	}
+
+	for key, value := range headers.(map[string]interface{}) {
+		httpRequest.Header.Add(key, value.(string))
+	}
+
+	var httpResponse *http.Response
+
+	httpResponse, err = c.client.Do(httpRequest)
+	if err != nil {
+		c.Logger.Error(c, "Error while executing http request;", "error", err.Error())
+		return
+	}
+	defer httpResponse.Body.Close()
+	body, err := ioutil.ReadAll(httpResponse.Body)
+	if err != nil {
+		c.Logger.Error(c, "Error while reading http response;", "error", err.Error())
+		return
+	}
+	err = json.Unmarshal(body, &queryResult)
+	if err != nil {
+		c.Logger.Error(c, "Error while unmarshalling http response;", "error", err.Error())
+		return
+	}
+	if len(queryResult.Errors) > 0 {
+		return nil, fmt.Errorf("%v", queryResult.Errors)
+	}
+	return queryResult.Data, nil
+}