/**
 * Copyright (C) 2011 BonitaSoft S.A.
 * BonitaSoft, 32 rue Gustave Eiffel - 38000 Grenoble
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2.0 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.bonitasoft.console.common.server.jsp;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

/**
 * @author Séverin Moussel
 * 
 */
public class JSPUtils {

    private final HttpServletRequest request;

    private final HttpSession session;

    public JSPUtils(final HttpServletRequest request, final HttpSession session) {
        super();
        this.request = request;
        this.session = session;
    }

    public String getSessionOrCookie(final String name, final String defaultValue) {

        // Try reading in session
        String result = (String) this.session.getAttribute(name);

        // else, try reading in cookies
        if (result == null) {
            final Cookie cookies[] = this.request.getCookies();
            if (cookies != null) {
                for (int i = 0; i < cookies.length; i++) {
                    if (cookies[i].getName().equals(name)) {
                        result = cookies[i].getValue();
                        break;
                    }
                }
            }
        }

        // else, set default value
        if (result == null) {
            result = defaultValue;
        }

        return result;
    }

    public String getSessionOrCookie(final String name) {
        return this.getSessionOrCookie(name, null);
    }

    public String getParameter(final String name, final String defaultValue) {
        String result = this.request.getParameter(name);

        if (result == null) {
            result = defaultValue;
        }

        return result;
    }

    public String getParameter(final String name) {
        return this.getParameter(name, (String) null);
    }

    public boolean getParameter(final String name, final boolean defaultValue) {
        final String result = this.request.getParameter(name);

        if (result != null) {
            try {

                // If boolean is passed as an integer
                final int intValue = Integer.parseInt(result);
                return intValue > 0;

            } catch (final NumberFormatException e) {

                // If boolean is passed as a recognized string
                if ("false".equalsIgnoreCase(result) || "no".equals(result)) {
                    return false;
                }
                if ("true".equalsIgnoreCase(result) || "yes".equals(result)) {
                    return false;
                }
            }
        }

        return defaultValue;
    }

    public int getParameter(final String name, final int defaultValue) {
        final String result = this.request.getParameter(name);

        if (result != null) {
            try {

                // If boolean is passed as an integer
                final int intValue = Integer.parseInt(result);
                return intValue;

            } catch (final NumberFormatException e) {
                // DO nothing
            }
        }

        return defaultValue;
    }

}