package <%=packageName%>.config.locale;

import org.springframework.context.i18n.LocaleContext;
import org.springframework.context.i18n.TimeZoneAwareLocaleContext;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.i18n.CookieLocaleResolver;
import org.springframework.web.util.WebUtils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Locale;
import java.util.TimeZone;

/**
 * Angular cookie saved the locale with a double quote (%22en%22).
 * So the default CookieLocaleResolver#StringUtils.parseLocaleString(localePart)
 * is not able to parse the locale.
 *
 * This class will check if a double quote has been added, if so it will remove it.
 */
public class AngularCookieLocaleResolver extends CookieLocaleResolver {

    @Override
    public Locale resolveLocale(HttpServletRequest request) {
        parseLocaleCookieIfNecessary(request);
        return (Locale) request.getAttribute(LOCALE_REQUEST_ATTRIBUTE_NAME);
    }

    @Override
    public LocaleContext resolveLocaleContext(final HttpServletRequest request) {
        parseLocaleCookieIfNecessary(request);
        return new TimeZoneAwareLocaleContext() {
            @Override
            public Locale getLocale() {
                return (Locale) request.getAttribute(LOCALE_REQUEST_ATTRIBUTE_NAME);
            }
            @Override
            public TimeZone getTimeZone() {
                return (TimeZone) request.getAttribute(TIME_ZONE_REQUEST_ATTRIBUTE_NAME);
            }
        };
    }

    @Override
    public void addCookie(HttpServletResponse response, String cookieValue) {
        // Mandatory cookie modification for angular to support the locale switching on the server side.
        cookieValue = "%22" + cookieValue + "%22";

        super.addCookie(response, cookieValue);
    }

    private void parseLocaleCookieIfNecessary(HttpServletRequest request) {
        if (request.getAttribute(LOCALE_REQUEST_ATTRIBUTE_NAME) == null) {
            // Retrieve and parse cookie value.
            Cookie cookie = WebUtils.getCookie(request, getCookieName());
            Locale locale = null;
            TimeZone timeZone = null;
            if (cookie != null) {
                String value = cookie.getValue();

                // Remove the double quote
                value = StringUtils.replace(value, "%22", "");

                String localePart = value;
                String timeZonePart = null;
                int spaceIndex = localePart.indexOf(' ');
                if (spaceIndex != -1) {
                    localePart = value.substring(0, spaceIndex);
                    timeZonePart = value.substring(spaceIndex + 1);
                }
                locale = (!"-".equals(localePart) ? StringUtils.parseLocaleString(localePart) : null);
                if (timeZonePart != null) {
                    timeZone = StringUtils.parseTimeZoneString(timeZonePart);
                }
                if (logger.isDebugEnabled()) {
                    logger.debug("Parsed cookie value [" + cookie.getValue() + "] into locale '" + locale +
                            "'" + (timeZone != null ? " and time zone '" + timeZone.getID() + "'" : ""));
                }
            }
            request.setAttribute(LOCALE_REQUEST_ATTRIBUTE_NAME,
                    (locale != null ? locale: determineDefaultLocale(request)));
            request.setAttribute(TIME_ZONE_REQUEST_ATTRIBUTE_NAME,
                    (timeZone != null ? timeZone : determineDefaultTimeZone(request)));
        }
    }



}

@@ -1587,17 +1587,16 @@
        %7D
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 %0A    %7D%0A%0A
@@ -1843,17 +1843,16 @@
  %22%2522%22;%0A
-%0A
         
@@ -3047,13 +3047,13 @@
 r.is
-Debug
+Trace
 Enab
@@ -3092,13 +3092,13 @@
 ger.
-debug
+trace
 (%22Pa
@@ -3444,32 +3444,45 @@
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+            %0A
             requ
@@ -3636,13 +3636,10 @@
 %7D%0A    %7D%0A
-%0A%0A%0A
 %7D%0A

Put the logger to "trace" mode, reformatting