/*
 * 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 complex.path_substitution;

import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.util.ArrayList;

import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.openoffice.test.OfficeConnection;

import com.sun.star.lang.XMultiServiceFactory;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.util.XStringSubstitution;

/**
 *
 */
public class PathSubstitutionTest
{

    // all substitution variables
    private VariableContainer substVars = null;

    /**
     * Create an array with all substitution variables
     */
    @Before public void initialize()
    {
        substVars = new VariableContainer();
        substVars.add("$(prog)", true, true);
        substVars.add("$(inst)", true, true);
        substVars.add("$(user)", true, true);
        substVars.add("$(work)", true, true);
        substVars.add("$(home)", true, true);
        substVars.add("$(temp)", true, true);
        substVars.add("$(lang)", false, false);
        substVars.add("$(username)", false, false);
        substVars.add("$(langid)", false, false);
        substVars.add("$(vlang)", false, false);
        // path won't resubstitute
        substVars.add("$(path)", true, false);
    }

    /**
     * One actual test: as the method 'getTestMethodNames()' tells.
     */
    @Test public void checkXStringSubstitution()
    {
        XMultiServiceFactory xMSF = getMSF();
        System.out.println("---- Testing the XStringSubstitution interface ----");
        System.out.println("Create instance of test object.\n");
        XStringSubstitution oObj = null;
        try
        {
            Object x = xMSF.createInstance(
                    "com.sun.star.util.PathSubstitution");
            oObj = UnoRuntime.queryInterface(XStringSubstitution.class, x);
            if (oObj == null)
            {
                throw new com.sun.star.uno.Exception();
            }
        }
        catch (com.sun.star.uno.Exception e)
        {
            System.out.println(e.getClass().getName());
            System.out.println("Message: " + e.getMessage());
            fail("Could not create an instance of the test object.");
            return;
        }

        for (int i = 0; i < substVars.size(); i++)
        {
            String var = substVars.getVariable(i);
            System.out.println("Testing var '" + var + "'");
            try
            {
                String substVal = oObj.getSubstituteVariableValue(var);
                System.out.println("\tvalue '" + substVal + "'");
                substVars.putValue(i, substVal);

                // simple check: let path in a string replace
                String substString = var + "/additional/path";

                System.out.println("Substitute '" + substString + "'");
                String newValue = oObj.substituteVariables(substString, true);
                System.out.println("Return value '" + newValue + "'");
                // 2do: better check for correct substitution
                assertTrue("Did not substitute '"
                        + substString + "' to '" + newValue
                        + "' correctly:", newValue.startsWith(substVal));

                // simple check part two:
                //make substitution backwards if possible
                if (substVars.canReSubstitute(i))
                {
                    substString = substVal + "/additional/path";

                    System.out.println("Substitute backwards '" + substString + "'");
                    newValue = oObj.reSubstituteVariables(substString);
                    System.out.println("Return value '" + newValue + "'");
                    // 2do: better check for correct substitution
                    assertTrue("Did not reSubstitute '"
                            + substString + "' to '" + newValue
                            + "' correctly:", checkResubstitute(newValue, var));
                }

                // simple check part three: look if replace
                //in middle of text works
                substString = "file:///starting/" + var + "/path";

                String sCanSubstAllPos;
                if (substVars.onlySubstituteAtBegin(i))
                    sCanSubstAllPos = "NO";
                else
                    sCanSubstAllPos = "YES";
                System.out.println("Variable can substitute within string: "+sCanSubstAllPos);
                System.out.println("Substitute '" + substString + "'");
                newValue = oObj.substituteVariables(substString, false);
                System.out.println("Return value '" + newValue + "'");
                boolean erg = true;
                if (substVars.onlySubstituteAtBegin(i))
                {
                    // in this case it should not have worked
                    erg = newValue.indexOf(substVal) == -1;
                }
                else
                {
                    erg = newValue.indexOf(substVal) != -1;
                }
                assertTrue("Did not substitute '"
                        + substString + "' to '" + newValue
                        + "' correctly:", erg);

            }
            catch (com.sun.star.uno.Exception e)
            {
                System.out.println(e.getClass().getName());
                System.out.println("Message: " + e.getMessage());
                fail("Could not create an instance of the test object.");
                return;
            }
            System.out.println("Finish testing '" + var + "'\n");
        }

        // check of greedy resubstitution
        String prog = "$(prog)";
        String inst = "$(inst)";
        String instPth = substVars.getValue(inst);
        String progPth = substVars.getValue(prog);

        if (progPth.startsWith(instPth) && instPth.startsWith(progPth))
        {
            System.out.println("Greedy ReSubstitute");
            String substString = progPth + "/additional/path";
            String newVal = oObj.reSubstituteVariables(substString);
            System.out.println("String '" + substString
                    + "' should be resubstituted with");
            System.out.println("Variable '" + prog + "' instead of Variable '"
                    + inst + "'");
            assertTrue("Did not reSubstitute '" + substString
                    + "' to '" + newVal + "' correctly:",
                    newVal.startsWith(prog));
        }

        System.out.println(
                "---- Finish testing the XStringSubstitution interface ----");
    }

    /**
     * test the resubstitution
     * @return true, if resubstitution is correct.
     */
    private boolean checkResubstitute(String subst, String original)
    {
        // simple: subst starts with original
        if (subst.startsWith(original))
        {
            return true;
        }
        else
        {                             // hard: been resubstituted with a different variable.
            for (int i = 0; i < substVars.size(); i++)
            {
                String var = substVars.getVariable(i);
                if (subst.startsWith(var) && original.startsWith(original))
                {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * Class for containing the substitution variables with their
     * values and some information.
     */
    private static class VariableContainer
    {

        public ArrayList<String> varName;
        public ArrayList<String> varValue;
        public ArrayList<Boolean> substAtBegin;
        public ArrayList<Boolean> resubst;

        public VariableContainer()
        {
            varName = new ArrayList<String>();
            varValue = new ArrayList<String>();
            substAtBegin = new ArrayList<Boolean>();
            resubst = new ArrayList<Boolean>();
        }

        public void add(String var, boolean onlySubstAtBegin,
                boolean canResubst)
        {
            varName.add(var);
            this.substAtBegin.add(Boolean.valueOf(onlySubstAtBegin));
            this.resubst.add(Boolean.valueOf(canResubst));
        }

        public void putValue(int i, String val)
        {
            varValue.add(i, val);
        }

        public int size()
        {
            return varName.size();
        }

        public String getVariable(int i)
        {
            return varName.get(i);
        }

        public String getValue(String var)
        {
            return varValue.get(varName.indexOf(var));
        }

        public boolean onlySubstituteAtBegin(int i)
        {
            return substAtBegin.get(i).booleanValue();
        }

        public boolean canReSubstitute(int i)
        {
            return resubst.get(i).booleanValue();
        }
    }

    private XMultiServiceFactory getMSF()
    {
        return UnoRuntime.queryInterface(XMultiServiceFactory.class, connection.getComponentContext().getServiceManager());
    }

    // setup and close connections
    @BeforeClass
    public static void setUpConnection() throws Exception
    {
        System.out.println("setUpConnection()");
        connection.setUp();
    }

    @AfterClass
    public static void tearDownConnection()
            throws InterruptedException, com.sun.star.uno.Exception
    {
        System.out.println("tearDownConnection()");
        connection.tearDown();
    }
    private static final OfficeConnection connection = new OfficeConnection();
}