package com.ctrip.framework.apollo.common.utils;

 import com.ctrip.framework.apollo.core.utils.StringUtils;

 import java.util.regex.Matcher;

 import java.util.regex.Pattern;

 /**

  * @author Jason Song(song_s@ctrip.com)

  */

 public class InputValidator {

   public static final String INVALID_CLUSTER_NAMESPACE_MESSAGE = "只允许输入数字，字母和符号 - _ .";

   public static final String INVALID_NAMESPACE_NAMESPACE_MESSAGE = "不允许以.json, .yml, .yaml, .xml, .properties结尾";

   public static final String CLUSTER_NAMESPACE_VALIDATOR = "[0-9a-zA-z_.-]+";

   public static final String APP_NAMESPACE_VALIDATOR = "[a-zA-z0-9._-]+(?<!\\.(json|yml|yaml|xml|properties))$";

   private static final Pattern CLUSTER_NAMESPACE_PATTERN =

       Pattern.compile(CLUSTER_NAMESPACE_VALIDATOR);

   private static final Pattern APP_NAMESPACE_PATTERN =

       Pattern.compile(APP_NAMESPACE_VALIDATOR);

   public static boolean isValidClusterNamespace(String input) {

     Matcher matcher = CLUSTER_NAMESPACE_PATTERN.matcher(input);

     return matcher.matches();

   }

   public static boolean isValidAppNamespace(String name){

     if (StringUtils.isEmpty(name)){

       return false;

     }

     return CLUSTER_NAMESPACE_PATTERN.matcher(name.toLowerCase()).matches() && APP_NAMESPACE_PATTERN.matcher(name).matches();

   }

 }