/*
 * ============LICENSE_START==========================================
 * ONAP Portal SDK
 * ===================================================================
 * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * ===================================================================
 *
 * Unless otherwise specified, all software contained herein is licensed
 * under the Apache License, Version 2.0 (the "License");
 * you may not use this software except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *             http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Unless otherwise specified, all documentation contained herein is licensed
 * under the Creative Commons License, Attribution 4.0 Intl. (the "License");
 * you may not use this documentation except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *             https://creativecommons.org/licenses/by/4.0/
 *
 * Unless required by applicable law or agreed to in writing, documentation
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * ============LICENSE_END============================================
 *
 *
 */
package org.onap.portalsdk.analytics.util;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.mail.javamail.MimeMessagePreparator;
import org.onap.portalsdk.analytics.error.RaptorException;
import org.onap.portalsdk.analytics.system.AppUtils;
import org.onap.portalsdk.core.util.SystemProperties;
import org.springframework.core.io.FileSystemResource;


public class EmailUtils {
	
	public EmailUtils(){
		super();
		mailSender = new JavaMailSenderImpl();
		mailSender.setProtocol("smtp");
		mailSender.setHost(SystemProperties.getProperty(SystemProperties.MAIL_SERVER_HOST));
		mailSender.setPort(Integer.parseInt(SystemProperties.getProperty(SystemProperties.MAIL_SERVER_PORT)));
	}
	
    private JavaMailSenderImpl mailSender;
    
	public void sendEmailWithAttachment(String subj, String mesg, String[] toList, String[] ccList, String[] filePathAndName) throws RaptorException {
		String from =  AppUtils.getDefaultEmailSender();
		List<MailAttachment> mailAttachList = new ArrayList<MailAttachment>();
		
		for (int i = 0; i < filePathAndName.length; i++) {
			MailAttachment mailAttachment = new MailAttachment();
			mailAttachment.setAttachmentType(MailAttachment.FILE_ATTACHMENT);
			
			String fileName = filePathAndName[i].substring(filePathAndName[i].lastIndexOf("/") + 1);
			mailAttachment.setFileName(fileName);
			mailAttachment.setFilePathName(filePathAndName[i]);
			
			mailAttachList.add(mailAttachment);
		}
			
		notifyWithAttachments(mesg, toList, from, subj, ccList, null, mailAttachList, true);

	}

	public void sendEmailNoAttachment(String subj, String mesg, String[] toList, String[] ccList) throws RaptorException{
		String from =  AppUtils.getDefaultEmailSender();
		notify(mesg, toList, from, subj, ccList, null, true);
	}

    
    public void notify(String message, String to, String from, boolean contentTypeHtml) {
        notify(message, to, from, null, null, null, contentTypeHtml);
    }

    public void notify(String message, String to, String from, String subject, boolean contentTypeHtml) {
        notify(message, to, from, subject, null, null, contentTypeHtml);
    }

    public void notify(String message, String to, String from, String subject, String cc, String bcc, boolean contentTypeHtml) {
        String[] toList = new String[1];
        String[] ccList = null;
        String[] bccList = null;
        if (cc != null) {
            ccList = new String[1];
            ccList[0] = cc;
        }
        if (bcc != null) {
            bccList = new String[1];
            bccList[0] = bcc;
        }
        toList[0] = to;
        notify(message, toList, from, subject, ccList, bccList, contentTypeHtml);
    }

    public void notify(String message, String[] to, String from, String subject, String[] cc, String[] bcc, boolean contentTypeHtml) {
        final MimeMessagePreparator messagePreparator = getMessagePreparator(message, to, from, subject, cc, bcc, null, contentTypeHtml);
        Thread mailerThread = new Thread() {
            public void run() {
                getMailSender().send(messagePreparator);
            }
        };
        mailerThread.start();
    }

    public void notifyWithAttachments(String message, String[] to, String from, String subject, String[] cc,
                                             String[] bcc, List mailAttachments, boolean contentTypeHtml) {
        final MimeMessagePreparator messagePreparator = getMessagePreparator(message, to, from, subject, cc, bcc,
                mailAttachments, contentTypeHtml);
        Thread mailerThread = new Thread() {
            public void run() {
                getMailSender().send(messagePreparator);
            }
        };
        mailerThread.start();
    }

    private static MimeMessagePreparator getMessagePreparator(final String message, final String[] to, final String from,
            final String subject, final String[] cc, final String[] bcc, final List mailAttachments, final boolean contentTypeHtml) {
        final MimeMessagePreparator messagePreparator = new MimeMessagePreparator() {
            public void prepare(MimeMessage mimeMessage) throws MessagingException {
                MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
                helper.setFrom(from);
                helper.setTo(to);
                helper.setText(message, contentTypeHtml);
                if (subject != null) {
                    helper.setSubject(subject);
                }    
                if (cc != null) {
                    System.out.println(cc);
                	helper.setCc(cc);
                }    
                if (bcc != null) {
                    helper.setBcc(bcc);
                }    
                if (mailAttachments != null && mailAttachments.size() > 0) {
                    for (int i = 0; i < mailAttachments.size(); i++) {
                        MailAttachment mailAttachment = (MailAttachment) mailAttachments.get(i);
                        if (mailAttachment.getAttachmentType() == MailAttachment.FILE_ATTACHMENT) {
                            helper.addAttachment(mailAttachment.getFileName(), new FileSystemResource(new File(mailAttachment
                                    .getFilePathName())));
                        } else if (mailAttachment.getAttachmentType() == MailAttachment.INLINE_ATTACHMENT) {
                            helper.addInline(mailAttachment.getFileName(), new FileSystemResource(new File(mailAttachment
                                    .getFilePathName())));
                        }
                    }
                }
            }
        };
        return messagePreparator;
    }

    public JavaMailSenderImpl getMailSender() {
        return mailSender;
    }

    public void setMailSender(JavaMailSenderImpl mailSender) {
        this.mailSender = mailSender;
    }


}