/**
 * MailArchiver is an application that provides services for storing and managing e-mail messages through a Web Services SOAP interface.
 * Copyright (C) 2012  Marcio Andre Scholl Levien and Fernando Alberto Reuter Wendt and Jose Ronaldo Nogueira Fonseca Junior
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/******************************************************************************\
*
*  This product was developed by
*
*        SERVIÇO FEDERAL DE PROCESSAMENTO DE DADOS (SERPRO),
*
*  a government company established under Brazilian law (5.615/70),
*  at Department of Development of Porto Alegre.
*
\******************************************************************************/

package serpro.mailarchiver.domain.metaarchive;

import java.io.StringReader;
import java.util.Collections;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;

import javax.jdo.JDOHelper;
import javax.jdo.annotations.NotPersistent;
import javax.jdo.annotations.PersistenceCapable;

import org.apache.james.mime4j.dom.datetime.DateTime;
import org.apache.james.mime4j.field.datetime.parser.DateTimeParser;
import org.apache.james.mime4j.field.datetime.parser.ParseException;

import serpro.mailarchiver.util.Logger;

@PersistenceCapable
public class ContentDispositionField
    extends Field
{
    /*
     * "Content-Disposition"
     */

    @NotPersistent
    private static final Logger log = Logger.getLocalLogger();

    //**** P E R S I S T E N T ****
    private String dispositionType; // "inline"|"attachment"
    private LinkedHashMap<String,String> parameters = new LinkedHashMap<String,String>();
    //*****************************

    public final String getDispositionType() {
        return dispositionType;
    }

    public final void setDispositionType(String dispositionType) {
        this.dispositionType = dispositionType;
    }

    //--------------------------------------------------------------------------
    public final Map<String,String> getParameters() {
        return Collections.unmodifiableMap(parameters);
    }

    public final String getParameter(String attribute) {
        return parameters.get(attribute);
    }

    public final void addParameter(String attribute, String value) {
        parameters.put(attribute, value);
    }

    public final void removeParameter(String attribute) {
        parameters.remove(attribute);
    }

    //--------------------------------------------------------------------------
    @Override
    final void dumpTree(StringBuilder sb, String pad) {
        sb.append(toString(pad + "    "));
    }

    @Override
    final String toString(String pad) {
        String idx = (getEntity() == null) ? "" : ("[" + String.valueOf(getEntityIdx()) + "]");
        StringBuilder sb = new StringBuilder(String.format(
                "ContentDispositionField %1$s%n"
              + "%2$sjdoState: %3$s%n"
              + "%2$soid: %4$s%n"
              + "%2$shash: %5$x%n"
              + "%2$sname: %6$s%n"
              + "%2$sdispositionType: %7$s%n"
              + "%2$svalid: %8$b"
              , idx
              , pad
              , JDOHelper.getObjectState(this)
              , getOid()
              , hashCode()
              , getName()
              , getDispositionType()
              , isValid()));

        for(Entry<String,String> entry : getParameters().entrySet()) {
            sb.append("\n").append(pad).append(entry.getKey()).append(" -> ").append(entry.getValue());
        }
        return sb.toString();
    }


    //<editor-fold defaultstate="collapsed" desc=" convenience ">

    public final boolean isInlineDisposition() {
        return dispositionType.equalsIgnoreCase("inline");
    }

    public final boolean isAttachmentDisposition() {
        return dispositionType.equalsIgnoreCase("attachment");
    }

    //--------------------------------------------------------------------------
    public final String getFileName() {
        return getParameter("filename");
    }

    //--------------------------------------------------------------------------
    public final long getSize() {
        String strSize = getParameter("size");
        if(strSize != null) {
            return Long.parseLong(strSize);
        }
        return 0;
    }

    //--------------------------------------------------------------------------
    public final Date getCreationDate() {
        String strCreationDate = getParameter("creation-date");
        if(strCreationDate != null) {
            StringReader reader = new StringReader(strCreationDate);
            DateTimeParser dtp = new DateTimeParser(reader);
            try {
                DateTime dt = dtp.parseAll();
                if(dt != null) {
                    return dt.getDate();
                }
            }
            catch(ParseException ex) {
                log.error(ex, "creation-date");
            }
        }
        return null;
    }

    public final Date getModificationDate() {
        String strModificationDate = getParameter("modification-date");
        if(strModificationDate != null) {
            StringReader reader = new StringReader(strModificationDate);
            DateTimeParser dtp = new DateTimeParser(reader);
            try {
                DateTime dt = dtp.parseAll();
                if(dt != null) {
                    return dt.getDate();
                }
            }
            catch(ParseException ex) {
                log.error(ex, "modification-date");
            }
        }
        return null;
    }

    public final Date getReadDate() {
        String strReadDate = getParameter("read-date");
        if(strReadDate != null) {
            StringReader reader = new StringReader(strReadDate);
            DateTimeParser dtp = new DateTimeParser(reader);
            try {
                DateTime dt = dtp.parseAll();
                if(dt != null) {
                    return dt.getDate();
                }
            }
            catch(ParseException ex) {
                log.error(ex, "read-date");
            }
        }
        return null;
    }

}