// Copyright (c) 2012, Outercurve Foundation.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// - Redistributions of source code must  retain  the  above copyright notice, this
//   list of conditions and the following disclaimer.
//
// - Redistributions in binary form  must  reproduce the  above  copyright  notice,
//   this list of conditions  and  the  following  disclaimer in  the documentation
//   and/or other materials provided with the distribution.
//
// - Neither  the  name  of  the  Outercurve Foundation  nor   the   names  of  its
//   contributors may be used to endorse or  promote  products  derived  from  this
//   software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT  NOT  LIMITED TO, THE IMPLIED
// WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR  PURPOSE  ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL,  SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT  OF  SUBSTITUTE  GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  HOWEVER  CAUSED AND ON
// ANY  THEORY  OF  LIABILITY,  WHETHER  IN  CONTRACT,  STRICT  LIABILITY,  OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING  IN  ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Win32;

namespace WebsitePanel.Providers.Statistics
{
    public class SmarterStats4 : SmarterStats
    {

        public override bool IsInstalled()
        {
            string productName = null;
            string productVersion = null;
            String[] names = null;

            RegistryKey HKLM = Registry.LocalMachine;

            RegistryKey key = HKLM.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall");

            if (key != null)
            {
                names = key.GetSubKeyNames();

                foreach (string s in names)
                {
                    RegistryKey subkey = HKLM.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\" + s);

                    if (subkey != null)
                    {
                        if (!String.IsNullOrEmpty((string)subkey.GetValue("DisplayName")))
                        {
                            productName = (string)subkey.GetValue("DisplayName");
                        }
                        if (productName != null)
                            if (productName.Equals("SmarterStats") || productName.Equals("SmarterStats Service"))
                            {
                                productVersion = (string)subkey.GetValue("DisplayVersion");
                                break;
                            }
                    }
                }

                if (!String.IsNullOrEmpty(productVersion))
                {
                    string[] split = productVersion.Split(new char[] { '.' });
                    return split[0].Equals("4");
                }
            }
                
                //checking x64 platform
                key = HKLM.OpenSubKey(@"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall");

                if (key != null)
                {
                    names = key.GetSubKeyNames();

                    foreach (string s in names)
                    {
                        RegistryKey subkey =
                            HKLM.OpenSubKey(@"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\" + s);

                        if (subkey != null)
                        {
                            if (!String.IsNullOrEmpty((string)subkey.GetValue("DisplayName")))
                            {
                                productName = (string)subkey.GetValue("DisplayName");
                            }
                            if (productName != null)
                                if (productName.Equals("SmarterStats") || productName.Equals("SmarterStats Service"))
                                {
                                    productVersion = (string)subkey.GetValue("DisplayVersion");
                                    break;
                                }
                        }
                    }

                    if (!String.IsNullOrEmpty(productVersion))
                    {
                        string[] split = productVersion.Split(new char[] { '.' });
                        return split[0].Equals("4");
                    }
                }
            
            return false;
        }

    }
}