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/**
 * Copyright 2010 Västra Götalandsregionen
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of version 2.1 of the GNU Lesser General Public
 *   License as published by the Free Software Foundation.
 *
 *   This library 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 Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the
 *   Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 *   Boston, MA 02111-1307  USA
 */

package se.vgregion.liferay;

import com.liferay.portal.model.User;
import com.liferay.portal.service.UserLocalService;
import org.springframework.beans.factory.annotation.Autowired;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by IntelliJ IDEA.
 * Created: 2011-11-20 16:23
 *
 * @author David Rosell
 */
public class LiferayAutomation {
    /**
     * Date format used for/when parsing date strings.
     */
    protected final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm");

    private Map sysadminUsers;

    @Autowired
    private UserLocalService userLocalService;

    @Autowired(required = false)
    private PropsUtilWrapper propsUtilWrapper = new PropsUtilWrapper();

    /**
     * Lookup systemAdmin for a company by companyId.
     *
     * SystemAdmins are configured in portal.properties as a comma separated list of
     * companyId;userScreenName. Semicolon is used to separate companyId and screenName.
     * ex:
     * 12345;admin1,54321;admin2
     *
     * If the companyId isn't configured an Exception will be thrown.
     * If the configured systemAdmin can't be found in the company an Exception will be thrown.
     *
     * @param companyId
     * @return
     * @throws Exception
     */
    public User lookupSysadmin(long companyId) throws Exception {
        if (sysadminUsers == null) {
            init();
        }

        String systemUserScreenName = sysadminUsers.get(companyId);
        if (systemUserScreenName == null) {
            String msg = String.format("SystemUser is not configured for companyId [%s]", companyId);
            throw new Exception(msg);
        }

        User systemUser = userLocalService.getUserByScreenName(companyId, systemUserScreenName);
        if (systemUser == null) {
            String msg = String.format("SystemUser [%s] cannot be found on companyId [%s]",
                    systemUserScreenName, companyId);
            throw new Exception(msg);
        }
        return systemUser;
    }

    /**
     * Read configuration from portal.properties
     */
    private void init() {
        sysadminUsers = new HashMap();
        String[] items = propsUtilWrapper.getArray("company.sysadmins");

        for (String item : items) {
            String[] keyValue = item.split(";");
            sysadminUsers.put(Long.valueOf(keyValue[0]), keyValue[1]);
        }
    }

    public String autoCreateDescription() {
        Date now = new Date();
        return String.format("Created automatically on %s", dateFormat.format(now));
    }

    public String autoRenameDescription(String oldName, String newName) {
        Date now = new Date();
        return String.format("Name changed from [%s] to [%s] on %s", oldName, newName, dateFormat.format(now));
    }

}