Fix response decompression

utils/misc.go

@@ -3,6 +3,11 @@ package utils
 import (
 	"crypto/rand"
 	"encoding/hex"
+	"io"
+
+	"github.com/andybalholm/brotli"
+	"github.com/klauspost/compress/flate"
+	"github.com/klauspost/compress/gzip"
 )
 
 func GenerateActivationCode() string {
@@ -12,3 +17,16 @@ func GenerateActivationCode() string {
 	}
 	return hex.EncodeToString(bytes)
 }
+
+func DecompressResponseBody(encoding string, body io.Reader) (io.ReadCloser, error) {
+    switch encoding {
+    case "gzip":
+        return gzip.NewReader(body)
+    case "deflate":
+        return flate.NewReader(body), nil
+    case "br":
+        return io.NopCloser(brotli.NewReader(body)), nil
+    default:
+        return io.NopCloser(body), nil
+    }
+}