🔨 Refactor of request method for safe use

Use path if needed, killed Printf, make request URL by url.URL

request.go

@@ -0,0 +1,49 @@
+package telegraph
+
+import (
+	gojson "encoding/json"
+	"errors"
+	"fmt"
+	"net/url"
+
+	json "github.com/pquerna/ffjson/ffjson"
+	http "github.com/valyala/fasthttp"
+)
+
+// Response represents a response from the Telegram API with the result stored raw. If ok equals true,
+// the request was successful, and the result of the query can be found in the result field. In case of
+// an unsuccessful request, ok equals false, and the error is explained in the error field (e.g.
+// SHORT_NAME_REQUIRED).
+type Response struct {
+	Ok     bool               `json:"ok"`
+	Error  string             `json:"error"`
+	Result *gojson.RawMessage `json:"result"`
+}
+
+func request(method, path string, args *http.Args) (*Response, error) {
+	requestURI := &url.URL{
+		Scheme: "https",
+		Host:   "api.telegra.ph",
+		Path:   method,
+	}
+
+	if path != "" {
+		requestURI.Path += fmt.Sprint("/", path)
+	}
+
+	_, body, err := http.Post(nil, requestURI.String(), args)
+	if err != nil {
+		return nil, err
+	}
+
+	var resp Response
+	if err := json.Unmarshal(body, &resp); err != nil {
+		return nil, err
+	}
+
+	if !resp.Ok {
+		return nil, errors.New(resp.Error)
+	}
+
+	return &resp, nil
+}

telegraph.go

@@ -1,37 +0,0 @@
-// Package telegraph has functions and types used for interacting with the
-// Telegraph API.
-package telegraph
-
-import (
-	"errors"
-
-	json "github.com/pquerna/ffjson/ffjson"
-	http "github.com/valyala/fasthttp"
-)
-
-const (
-	// APIEndpoint should be presented in this for all queries to the Telegraph
-	// API must be served over HTTPS.
-	APIEndpoint = "https://api.telegra.ph/%s"
-
-	// PathEndpoint used if a path parameter is present.
-	PathEndpoint = "https://api.telegra.ph/%s/%s"
-)
-
-func request(url string, args *http.Args) (*Response, error) {
-	_, body, err := http.Post(nil, url, args)
-	if err != nil {
-		return nil, err
-	}
-
-	var resp Response
-	if err := json.Unmarshal(body, &resp); err != nil {
-		return nil, err
-	}
-
-	if !resp.Ok {
-		return nil, errors.New(resp.Error)
-	}
-
-	return &resp, nil
-}