#include "PageRequestMessagedHandler.h"

#include "Poco/Net/HTTPServerRequest.h"

#include "../ServerConfig.h"

const Poco::RegularExpression PageRequestMessagedHandler::mDetectLanguageGET("^(?:/[a-zA-Z0-9_-]*)?/(en|de)");

Languages PageRequestMessagedHandler::chooseLanguage(Poco::Net::HTTPServerRequest& request, std::string lang_btn /*= ""*/)
{

	// from Form
	Languages lang = LanguageManager::languageFromString(lang_btn);
	if (lang == LANG_NULL) {
		// from URL
		std::string uri = request.getURI();
		std::vector<std::string> matches;
		//std::string lang_str;
		mDetectLanguageGET.split(uri, matches);
		if (matches.size() > 0) {
			lang = LanguageManager::languageFromString(matches[matches.size()-1]);
		}
		else {
			// from Header
			/*
			$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
			$acceptLang = ['fr', 'it', 'en'];
			$lang = in_array($lang, $acceptLang) ? $lang : 'en';
			*/
			std::string accept_languages = request.get("HTTP_ACCEPT_LANGUAGE", "");
			printf("accept header: %s\n", accept_languages.data());
		}
	}

	if (lang == LANG_NULL) {
		//lang = ServerConfig::g_default_locale;
	}

	return lang;
}