public static String getLanguageCode(HttpServletRequest request) {
String context = ServletUtilities.getContext(request);
// worst case scenario default to English
String langCode = "en";
// try to detect a default if defined
if (CommonConfiguration.getProperty("defaultLanguage", context) != null) {
langCode = CommonConfiguration.getProperty("defaultLanguage", context);
}
ArrayList<String> supportedLanguages = new ArrayList<String>();
if (CommonConfiguration.getSequentialPropertyValues("language", context) != null) {
supportedLanguages = CommonConfiguration.getSequentialPropertyValues("language", context);
}
// if specified directly, always accept the override
if (request.getParameter("langCode") != null) {
if (supportedLanguages.contains(request.getParameter("langCode"))) {
return request.getParameter("langCode");
}
}
// the request cookie is the next thing we check. this should be the primary means of figuring
// langCode out
Cookie[] cookies = request.getCookies();
if (cookies != null) {
for (Cookie cookie : cookies) {
if ("wildbookLangCode".equals(cookie.getName())) {
if (supportedLanguages.contains(cookie.getValue())) {
return cookie.getValue();
}
}
}
}
// finally, we will check the URL vs values defined in context.properties to see if we can set
// the right context
// TBD - future - detect browser supported language codes and locale from the HTTPServletRequest
// object
return langCode;
}
