/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */

package org.libreoffice.example.java_scripts;

import com.sun.star.uno.UnoRuntime;
import com.sun.star.lang.XMultiComponentFactory;
import com.sun.star.uno.XComponentContext;
import com.sun.star.script.framework.runtime.XScriptContext;
import com.sun.star.util.XStringSubstitution;

import javax.mail.*;
import javax.activation.*;

import java.io.*;


public class MimeConfiguration {

    // Office Installation path
    private static String instPath = "";


    public static boolean createFiles(XScriptContext xsc) {
        try {
            XComponentContext xcc = xsc.getComponentContext();
            XMultiComponentFactory xmf = xcc.getServiceManager();

            Object pathSub =
                xmf.createInstanceWithContext("com.sun.star.comp.framework.PathSubstitution",
                                              xcc);
            XStringSubstitution stringSub = (XStringSubstitution) UnoRuntime.queryInterface(
                                                XStringSubstitution.class, pathSub);
            instPath = stringSub.getSubstituteVariableValue("$(inst)");

        } catch (com.sun.star.beans.UnknownPropertyException upe) {
            System.out.println("com.sun.star.beans.UnknownPropertyException");
            upe.printStackTrace();
        } catch (com.sun.star.uno.Exception e) {
            System.out.println("com.sun.star.uno.Exception");
            e.printStackTrace();
        }

        writeMailCap();
        writeMimeTypes();

        // ToDo: include status feedback to StatusWindow
        return true;
    }




    private static void writeMailCap() {
        String mailcapPath = getConfigDir() + System.getProperty("file.separator") +
                             "mailcap";

        try {
            if (! new File(java.net.URLDecoder.decode(mailcapPath)).exists()) {
                File mailcapFile = new File(mailcapPath);
                FileWriter out = new FileWriter(mailcapFile);
                String[] lines = getMailcapText();

                for (int i = 0; i < lines.length; i++) {
                    out.write(lines[i], 0, lines[i].length());
                }

                out.close();
            } else {
            }



            // use prog dir, if not there then java.io to create/write new file
            MailcapCommandMap map = new MailcapCommandMap(mailcapPath);
            CommandMap.setDefaultCommandMap(map);
        } catch (IOException ioe) {
            ioe.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    private static String[] getMailcapText() {
        String[] mailcapText = {
            "#\n",
            "# Default mailcap file for the JavaMail System.\n",
            "#\n",
            "# JavaMail content-handlers:\n",
            "#\n",
            "text/plain;;            x-java-content-handler=com.sun.mail.handlers.text_plain\n",
            "text/html;;             x-java-content-handler=com.sun.mail.handlers.text_html\n",
            "text/xml;;              x-java-content-handler=com.sun.mail.handlers.text_xml\n",
            "image/gif;;             x-java-content-handler=com.sun.mail.handlers.image_gif\n",
            "image/jpeg;;            x-java-content-handler=com.sun.mail.handlers.image_jpeg\n",
            "multipart/*;;           x-java-content-handler=com.sun.mail.handlers.multipart_mixed\n",
            "message/rfc822;;        x-java-content-handler=com.sun.mail.handlers.message_rfc822\n"
        };

        return mailcapText;
    }



    private static void writeMimeTypes() {
        String mimetypesPath = getConfigDir() + System.getProperty("file.separator") +
                               "mimetypes.default";

        try {
            if (! new File(java.net.URLDecoder.decode(mimetypesPath)).exists()) {
                File mimetypesFile = new File(mimetypesPath);
                FileWriter out = new FileWriter(mimetypesFile);
                String[] lines = getMimeTypesText();

                for (int i = 0; i < lines.length; i++) {
                    out.write(lines[i], 0, lines[i].length());
                }

                out.close();
            } else {
            }

            MimetypesFileTypeMap mimeTypes = new MimetypesFileTypeMap(mimetypesPath);
            FileTypeMap.setDefaultFileTypeMap(mimeTypes);
        } catch (IOException ioe) {
            ioe.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    private static String[] getMimeTypesText() {
        String[] mimesText = {
            "#\n",
            "# A simple, old format, mime.types file\n",
            "#\n",
            "text/html               html htm HTML HTM\n",
            "text/plain              txt text TXT TEXT\n",
            "image/gif               gif GIF\n",
            "image/ief               ief\n",
            "image/jpeg              jpeg jpg jpe JPG\n",
            "image/tiff              tiff tif\n",
            "image/x-xwindowdump     xwd\n",
            "application/postscript  ai eps ps\n",
            "application/rtf         rtf\n",
            "application/x-tex       tex\n",
            "application/x-texinfo   texinfo texi\n",
            "application/x-troff     t tr roff\n",
            "audio/basic             au\n",
            "audio/midi              midi mid\n",
            "audio/x-aifc            aifc\n",
            "audio/x-aiff            aif aiff\n",
            "audio/x-mpeg            mpeg mpg\n",
            "audio/x-wav             wav\n",
            "video/mpeg              mpeg mpg mpe\n",
            "video/quicktime         qt mov\n",
            "video/x-msvideo         avi\n"
        };

        return mimesText;
    }


    private static String getConfigDir() {
        // mailcap file must be written to the Office user/config  directory

        // instPath is a URL, needs to be converted to a system pathname
        String config = instPath + "/user/config";
        String configNonURL = "";

        if (System.getProperty("os.name").indexOf("Windows") != -1) {
            // Windows
            // removes "file:///"
            int start = 8;
            configNonURL = config.substring(start, config.length());

            // Convert forward to back-slashes
            while (configNonURL.indexOf("/") != -1) {
                int fSlash = configNonURL.indexOf("/");
                String firstPart = configNonURL.substring(0, fSlash);
                String secondPart = configNonURL.substring(fSlash + 1, configNonURL.length());
                configNonURL = firstPart + "\\" + secondPart;
            }
        } else {
            // Unix/Linux
            // removes "file://"
            int start = 7;
            configNonURL = config.substring(start, config.length());
        }

        return configNonURL;
    }

}