/**
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
 *
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License). You may not use this file except in
 * compliance with the License.
 *
 * You can obtain a copy of the License at
 * https://opensso.dev.java.net/public/CDDLv1.0.html or
 * opensso/legal/CDDLv1.0.txt
 * See the License for the specific language governing
 * permission and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at opensso/legal/CDDLv1.0.txt.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * $Id: HomeDirValidator.java,v 1.1 2009/01/21 18:43:55 kanduls Exp $
 */
package com.sun.identity.agents.tools.jetty.v61;

import com.sun.identity.install.tools.configurator.IStateAccess;
import com.sun.identity.install.tools.configurator.InstallException;
import com.sun.identity.install.tools.configurator.ValidationResult;
import com.sun.identity.install.tools.configurator.ValidationResultStatus;
import com.sun.identity.install.tools.configurator.ValidatorBase;
import com.sun.identity.install.tools.util.Debug;
import com.sun.identity.install.tools.util.FileUtils;
import com.sun.identity.install.tools.util.LocalizedMessage;
import java.io.File;
import java.util.Map;

public class HomeDirValidator extends ValidatorBase implements IConstants,
    IConfigKeys {

    public HomeDirValidator() throws InstallException {
        super();
    }

    /**
     * Method isHomeDirValid
     *
     *
     * @param dir
     * @param props
     * @param IStateAccess
     *
     * @return ValidationResult
     *
     */
    public ValidationResult isHomeDirValid(
        String jettyHomeDir,
        Map props,
        IStateAccess state) {
        ValidationResultStatus validRes = ValidationResultStatus.STATUS_FAILED;
        LocalizedMessage returnMessage = null;

        if ((jettyHomeDir != null) && (jettyHomeDir.trim().length() >= 0)) {
            // The config dir has been normalized to have "/" only
            
            String jettyJarFile = jettyHomeDir + STR_FORWARD_SLASH + 
                    JETTY_START_JAR;
            String webAppDir =jettyHomeDir + STR_FORWARD_SLASH + 
                    JETTY_WEB_APP_DIR;
            if (FileUtils.isFileValid(jettyJarFile) && 
                    canUpdateJettyConfigFile(jettyHomeDir)) {
                returnMessage = LocalizedMessage.get(VA_MSG_JETTY_VAL_HOME,
                        STR_JETTY_GROUP, new Object[] { jettyHomeDir });
                validRes = ValidationResultStatus.STATUS_SUCCESS;
                state.put(STR_KEY_JETTY_START_JAR_PATH, jettyJarFile);
                Debug.log("HomeDirValidator: Added Jetty home to state --> " + 
                        jettyHomeDir); 
                state.put(STR_KEY_JETTY_INST_DEPLOY_DIR, webAppDir);
                Debug.log("HomeDirValidator: Added Jetty webapp dir to state " +
                        "--> " + webAppDir);
            }
        }
        if (validRes.getIntValue() == ValidationResultStatus.INT_STATUS_FAILED) 
        {
            returnMessage = LocalizedMessage.get(VA_WRN_JETTY_IN_VAL_HOME,
                    STR_JETTY_GROUP, new Object[] { jettyHomeDir });
        }
        Debug.log("HomeDirValidator : Is Jetty Home directory " + jettyHomeDir + 
                " valid ? " + validRes.isSuccessful());
        return new ValidationResult(validRes, null, returnMessage);
    }

    public void initializeValidatorMap() throws InstallException {
        Class[] paramObjs = { String.class, Map.class, IStateAccess.class };

        try {
            getValidatorMap()
                .put(
                "VALID_JETTY_HOME_DIR",
                this.getClass().getMethod(
                    "isHomeDirValid",
                    paramObjs));
        } catch (NoSuchMethodException nsme) {
            Debug.log("HomeDirValidator: NoSuchMethodException " + 
                    "thrown while loading method :", nsme);
            throw new InstallException(
                LocalizedMessage.get(LOC_VA_ERR_VAL_METHOD_NOT_FOUND),
                nsme);
        } catch (SecurityException se) {
            Debug.log("HomeDirValidator: SecurityException thrown " + 
                    "while loading method :", se);
            throw new InstallException(
                LocalizedMessage.get(LOC_VA_ERR_VAL_METHOD_NOT_FOUND),
                se);
        } catch (Exception ex) {
            Debug.log("HomeDirValidator: Exception thrown while "+ 
                    "loading method :", ex);
            throw new InstallException(
                LocalizedMessage.get(LOC_VA_ERR_VAL_METHOD_NOT_FOUND), ex);
        }
    }

    protected boolean canUpdateJettyConfigFile(String jettyHomeDir) {
        boolean result = false;
        String jettyConfFile = jettyHomeDir + STR_FORWARD_SLASH + 
                STR_ETC_DIRECTORY + STR_FORWARD_SLASH + STR_SERVER_XML;
        File file = new File(jettyConfFile);
        if (file.exists() && file.canWrite() && file.canRead()
                && file.getParentFile()
                           .canWrite()) {
            result = true;
        }
        return result;
    }
}