Add telegram api

telegram/api/secret.go

@@ -0,0 +1,23 @@
+package api
+
+import (
+	"fmt"
+	"io/ioutil"
+)
+
+const secretURL = "https://core.telegram.org/getProxySecret" // nolint: gas
+
+func Secret() ([]byte, error) {
+	resp, err := request(secretURL)
+	if err != nil {
+		return nil, fmt.Errorf("cannot access telegram server: %w", err)
+	}
+	defer resp.Close()
+
+	secret, err := ioutil.ReadAll(resp)
+	if err != nil {
+		return nil, fmt.Errorf("cannot read response: %w", err)
+	}
+
+	return secret, nil
+}