first commit

core/providers/utils/file.go

@@ -0,0 +1,14 @@
+package utils
+
+import (
+	"encoding/base64"
+	"fmt"
+	"net/http"
+)
+
+// FileBytesToBase64DataURL converts raw file bytes to base64 data URL format
+func FileBytesToBase64DataURL(fileBytes []byte) string {
+	mimeType := http.DetectContentType(fileBytes)
+	b64Data := base64.StdEncoding.EncodeToString(fileBytes)
+	return fmt.Sprintf("data:%s;base64,%s", mimeType, b64Data)
+}