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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file 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.
 */
package org.kie.kogito.mail;

import java.util.Arrays;
import java.util.Map;
import java.util.Optional;

import org.kie.kogito.event.usertask.UserTaskInstanceDeadlineEventBody;
import org.mvel2.templates.TemplateRuntime;

public class MailInfo {

    protected static final String TO_PROPERTY = "toemails";
    protected static final String FROM_PROPERTY = "from";
    protected static final String SUBJECT_PROPERTY = "subject";
    protected static final String REPLY_TO_PROPERTY = "replyTo";
    protected static final String BODY_PROPERTY = "body";

    private String[] to;
    private String from;
    private String subject;
    private String replyTo;
    private String body;

    public static MailInfo of(UserTaskInstanceDeadlineEventBody data) {
        Map info = data.getNotification();
        return new MailInfo(Optional.ofNullable((String) info.get(TO_PROPERTY)).map(s -> s.split(",")).orElse(null),
                (String) info.get(FROM_PROPERTY), evalTemplate((String) info.get(SUBJECT_PROPERTY), data),
                (String) info.get(REPLY_TO_PROPERTY), evalTemplate((String) info.get(BODY_PROPERTY), data));
    }

    private static String evalTemplate(String template, UserTaskInstanceDeadlineEventBody data) {
        return template != null ? TemplateRuntime.eval(template, data).toString() : null;
    }

    protected MailInfo(String[] to, String from, String subject, String replyTo, String body) {
        this.to = to;
        this.from = from;
        this.subject = subject;
        this.replyTo = replyTo;
        this.body = body;
    }

    public String[] to() {
        return to;
    }

    public String subject() {
        return subject;
    }

    public String from() {
        return from;
    }

    public String replyTo() {
        return replyTo;
    }

    public String body() {
        return body;
    }

    @Override
    public String toString() {
        return "MailInfo [to=" + Arrays.toString(to) + ", from=" + from + ", subject=" + subject + ", replyTo=" +
                replyTo + ", body=" + body + "]";
    }
}