/**
    * Copyright (c) 2015 Renato Del Gaudio
    *
    * Permission is hereby granted, free of charge, to any person obtaining a copy
    * of this software and associated documentation files (the "Software"), to deal
    * in the Software without restriction, including without limitation the rights
    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    * copies of the Software, and to permit persons to whom the Software is
    * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all 
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  package com.renatodelgaudio.awsupdate;
  
  import static com.renatodelgaudio.awsupdate.EnvUtil.buildRoute53;
  import static com.renatodelgaudio.awsupdate.EnvUtil.getAwsFilePath;
  import static org.apache.commons.lang.StringUtils.equalsIgnoreCase;
  import static org.apache.commons.lang.StringUtils.isBlank;
  import static org.apache.commons.lang.StringUtils.isNotBlank;
  import static org.apache.commons.lang.StringUtils.trim;
  
  import java.io.File;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Value;
  
  import com.amazonaws.services.route53.AmazonRoute53;
  
  public class PropertyConfig implements Configuration {
  
      private final static Logger log = LoggerFactory.getLogger(PropertyConfig.class);
  
  
      @Value("${zone.id}")
      protected String zoneId;
      @Value("${record.name}")
      private String recordName;
      @Value("${record.ttl}")
      private String ttl;
      @Value("${mailsender.host}")
      private String mailSenderHost;
      @Value("${mailsender.protocol}")
      private String mailSenderProtocol;
      @Value("${mailsender.port}")
      private String mailSenderPort;
      @Value("${mailsender.username}")
      private String mailSenderUsername;
      @Value("${mailsender.password}")
      private String mailSenderPassword;
      @Value("${mailsender.from}")
      private String mailSenderFrom;
      @Value("${mailsender.to}")
      private String mailSenderTo;
      @Value("${mailsender.enable}")
      private String mailsenderEnable;
      
      
  	
  
      private AmazonRoute53 r53;
      
      private String maskPasswd(String passwd){
  	if (isBlank(passwd)){
  	    return "";
  	}
  	int len = passwd.length();
  	StringBuilder sb = new StringBuilder(len);
  	for(int i=0;i<len;i++)
  	    sb.append("X");
  	return sb.toString();
      }
  
      @Override
      public boolean isConfigOK() {
  	try{
  	    String awsPath = getAwsFilePath();
  	    r53 = buildRoute53(new File(awsPath));
  
  	    boolean ok =  isNotBlank(zoneId) && isNotBlank(recordName) && isNotBlank(ttl);
  	    if(!ok) {
  		log.error("Configuration is not OK. Please check that aws.properties contains correct values for zone.id, record.name and record.ttl");
  		log.error("zoneId:"+zoneId);
  		log.error("recordName:"+recordName);
  		log.error("ttl:"+ttl);
  	    }
  	    
  	    boolean mailOK = !equalsIgnoreCase(mailsenderEnable,"true") || (isNotBlank(mailSenderHost) && isNotBlank(mailSenderProtocol) && isNotBlank(mailSenderPort) &&
  		    isNotBlank(mailSenderUsername) && isNotBlank(mailSenderPassword) && isNotBlank(mailSenderFrom) && isNotBlank(mailSenderTo)) ;
  	    if(!mailOK) {
 		log.warn("Configuration email is not OK. Emails might not send out" );
 		log.warn("Please check that aws.properties contains at least all values for mailsender.* properties" );
 		log.warn("mailSenderHost:"+mailSenderHost);
 		log.warn("mailSenderProtocol:"+mailSenderProtocol);
 		log.warn("mailSenderPort:"+mailSenderPort);
 		log.warn("mailSenderUsername:"+mailSenderUsername);
 		log.warn("mailSenderPassword:"+maskPasswd(mailSenderPassword));
 		log.warn("mailSenderFrom:"+mailSenderFrom);
 		log.warn("mailSenderTo:"+mailSenderTo);
 	    }
 	    return ok;
 	}catch(Exception e){
 	    log.error("Wrong configuration or incomplete installation. Please try to re-install and complete the post installation configuration.");
 	    return false;
 	}
     }
 
     @Override
     public String getZoneId() {
 	return trim(zoneId);
     }
 
     @Override
     public String getRecordName() {
 	return trim(recordName);
     }
     @Override
     public AmazonRoute53 getAmazonClient() {
 	return r53;
     }
 
     @Override
     public String getTTL() {
 	return ttl;
     }
 
 }