Merge pull request #2 from zry98/master

Fix InvokeRequest

requests.go

@@ -5,34 +5,33 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
+	"strings"
 )
 
 type Body struct {
 	// Ok: if true, request was successful, and result can be found in the Result field.
 	// If false, error can be explained in Error field.
 	Ok bool `json:"ok"`
-	// Error: contains a human readable description of the error result.
+	// Error: contains a human-readable description of the error result.
 	Error string `json:"error"`
 	// Result: result of requests (if Ok)
 	Result json.RawMessage `json:"result"`
 }
 
 func InvokeRequest(method string, params url.Values) (json.RawMessage, error) {
-	r, err := http.NewRequest(http.MethodPost, "https://api.telegra.ph/"+method, nil)
+	r, err := http.NewRequest(http.MethodPost, "https://api.telegra.ph/"+method, strings.NewReader(params.Encode()))
 	if err != nil {
-		return nil, fmt.Errorf("failed to build GET request to %s: %w", method, err)
+		return nil, fmt.Errorf("failed to build POST request to %s: %w", method, err)
 	}
-	r.URL.RawQuery = params.Encode()
 	resp, err := http.DefaultClient.Do(r)
 	if err != nil {
-		return nil, fmt.Errorf("failed to execute GET request to %s: %w", method, err)
+		return nil, fmt.Errorf("failed to execute POST request to %s: %w", method, err)
 	}
 	defer resp.Body.Close()
 
 	var b Body
-
 	if err = json.NewDecoder(resp.Body).Decode(&b); err != nil {
-		return nil, fmt.Errorf("failed to decode GET request to %s: %w", method, err)
+		return nil, fmt.Errorf("failed to parse response from %s: %w", method, err)
 	}
 	if !b.Ok {
 		return nil, fmt.Errorf("failed to %s: %s", method, b.Error)