using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Data.SqlClient;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.Configuration;
using System.Web.Mvc;
using System.Web.Security;
using System.Xml;

using Vrh.XmlProcessing;

using Vrh.OneReport.Lib.Areas.OneReport.Helpers;
using Vrh.OneReport.Lib.Areas.OneReport.XMLParametersFileProcessor;
using Vrh.OneReport.Lib.Areas.OneReport.DbModels;

namespace Vrh.OneReport.Lib.Areas.OneReport.Models
{
    /// <summary>
    /// Structure to hold the data of a report.
    /// </summary>
    public class Report
    {
        #region Static private variables

        /// <summary>
        /// Object to handle XMl document.
        /// </summary>
        protected static XmlDocument Xml = null;

        /// <summary>
        /// XML namespace.
        /// </summary>
        protected const string XmlNamespace = "http://www.vonalkod.hu/Log4Pro";

        /// <summary>
        /// XML namespace manager object.
        /// </summary>
        protected static XmlNamespaceManager XmlNSManager = null;

        #endregion  //Static private variables

        #region private variables

        /// <summary>
        /// If true, the report can be generated.
        /// </summary>
        private bool _isCompleted = false;

        /// <summary>
        /// The list of report (rdl) parameters.
        /// </summary>
        protected Dictionary<string, string> RdlParameters = new Dictionary<string, string>();

        /// <summary>
        /// The report ID used in html environment.
        /// </summary>
        protected string ID;

        /// <summary>
        /// Report is OneReport
        /// </summary>
        private bool isOneReport = false;

        #endregion  //private variables

        #region public variables

        /// <summary>
        /// Report is OneReport
        /// </summary>
        public bool IsOneReport
        {
            get
            {
                return isOneReport;
            }
            set
            {
                isOneReport = value;
            }
        }

        /// <summary>
        /// The name of the report.
        /// </summary>
        public string Name { get; set; }

        /// <summary>
        /// The description of the report.
        /// </summary>
        public string Description { get; set; }

        /// <summary>
        /// The filename of the report.
        /// </summary>
        public string FileName { get; set; }

        /// <summary>
        /// The parameters of the report (must be filled by the user).
        /// </summary>
        public Dictionary<string, ReportParameter> Parameters = new Dictionary<string, ReportParameter>();

        /// <summary>
        /// List of the parameters (in the displaying sequence).
        /// </summary>
        public List<ReportParameter> ParameterList = null;

        /// <summary>
        /// List of the datasets used by the report.
        /// </summary>
        public List<DataSetDescriptor> DataSets = new List<DataSetDescriptor>();

        /// <summary>
        /// The number of columns in displaying the parameters' dialog.
        /// </summary>
        public int MaxCol = 0;

        /// <summary>
        /// If true, the report can be generated.
        /// </summary>
        public bool isCompleted
        {
            get
            {
                return Parameters.Count == 0 || _isCompleted;
            }

            set
            {
                _isCompleted = value;
            }
        }

        /// <summary>
        /// The list of report (rdl) parameters in whitch the parameters are replaced by their values.
        /// </summary>
        public Dictionary<string, string> RdlEvaluatedParameters = new Dictionary<string, string>();

        #endregion //public variables

        #region Static public methods

        /// <summary>
        /// Creates a report list from the report definitions XML file.
        /// <return>The report list grouped by user roles.</returns>
        /// </summary>
        public static List<UserRoleGroupModel> ReadReports()
        {
            List<UserRoleGroupModel> rv = new List<UserRoleGroupModel>();
            List<string> roles = (Roles.Enabled ? new List<string>(Roles.GetRolesForUser()) : new List<string>());
            Dictionary<string, UserRoleGroupModel> ugm_map = new Dictionary<string, UserRoleGroupModel>();

            roles.Insert(0, "*");
            foreach (var role in roles)
            {
                ReadReportsForRole(role, rv, ugm_map);
            }
            for (int i = 0; i < rv.Count; i++)
            {
                if (rv[i].Items.Count == 0)
                {
                    rv.RemoveAt(i);
                    i--;
                }
            }
            if (rv != null && rv.Count > 0 && !rv.Any(x => x.GroupState == UserRoleGroupModel.ItemGroupState.Opened))
            {
                var item = rv.FirstOrDefault(x => x.GroupState == UserRoleGroupModel.ItemGroupState.Unknown);

                if (item != null)
                    item.GroupState = UserRoleGroupModel.ItemGroupState.Opened;
            }

            return rv;
        }

        /// <summary>
        /// Creates a report list belonging to the given user role from the report definitions XML file.
        /// <param name="userrole">A user role.</param>
        /// <param name="groups">List of the usergroups.</param>
        /// <param name="ugm_map">Hashmap of the used userroles (internal use).</param>
        /// </summary>
        public static void ReadReportsForRole(string userrole, List<UserRoleGroupModel> groups, Dictionary<string, UserRoleGroupModel> ugm_map)
        {
            UserRoleGroupModel ugm = null;
            ItemDescriptor item;
            XmlNode general;
            LangHelperNS langHelper = LangHelperNS.ReportXML;
            string defaultName = string.Format(LangHelperNS.ReportView.GetTranslation("Report.UsersReportsText", "{0} listái"), (userrole == "*" ? LangHelperNS.QueryView.GetTranslation("Report.UserText", "Felhasználó") : userrole));

            try
            {
                if (Xml == null)
                {
                    Xml = new XmlDocument();
                    Xml.Load(GetReportFileName());
                    XmlNSManager = new XmlNamespaceManager(Xml.NameTable);
                    XmlNSManager.AddNamespace("vlp", XmlNamespace);
                }

                if ((general = Xml.SelectSingleNode("vlp:userroles/vlp:general", XmlNSManager)) != null)
                {
                    foreach (XmlNode node in general.ChildNodes)
                    {
                        if (node.NodeType == XmlNodeType.Element)
                        {
                            switch (node.Name.ToLower())
                            {
                                case "wordcodeseparator":
                                    string sep = node.InnerText.Trim();
                                    if (sep.Length > 0)
                                        langHelper = new LangHelperNS(langHelper, sep, sep, sep);
                                    break;
                            }
                        }
                    }
                }

                foreach (XmlNode node in Xml.SelectNodes("vlp:userroles/vlp:userrole", XmlNSManager))
                {
                    string rolename = node.GetAttributeValue("name");
                    string groupname = node.GetAttributeValue("ReportGroupName", node.GetAttributeValue("GroupName"));
                    string isopened = node.GetAttributeValue("IniStateOpen");
                    bool bOK = false;
                    XmlNode subnode;
                    string itemname, itemid;

                    if (rolename == null)
                    {
                        bOK = (userrole == "*");
                    }
                    else
                    {
                        string[] rolelist = rolename.Split(new char[] { ';' });

                        foreach (var r in rolelist)
                        {
                            if (r.Equals(userrole, StringComparison.CurrentCultureIgnoreCase))
                            {
                                bOK = true;
                                break;
                            }
                        }
                    }
                    if (bOK)
                    {
                        if (string.IsNullOrEmpty(groupname))
                        {
                            groupname = defaultName;
                        }
                        else
                        {
                            groupname = langHelper.TranslateText(null, groupname);
                        }
                        if (ugm_map.ContainsKey(groupname))
                        {
                            ugm = ugm_map[groupname];
                        }
                        else
                        {
                            ugm = new UserRoleGroupModel();
                            ugm.Name = groupname;
                            ugm.Items = new List<ItemDescriptor>();
                            ugm.GroupState = UserRoleGroupModel.ItemGroupState.Unknown;
                            ugm_map.Add(ugm.Name, ugm);
                            groups.Add(ugm);
                        }
                        if (isopened != null)
                        {
                            if ((isopened.ToLower().StartsWith("t") || isopened.ToLower().StartsWith("i")))
                                ugm.GroupState = UserRoleGroupModel.ItemGroupState.Opened;
                            else if (ugm.GroupState == UserRoleGroupModel.ItemGroupState.Unknown)
                                ugm.GroupState = UserRoleGroupModel.ItemGroupState.Closed;
                        }
                        foreach (XmlNode reportnode in node.SelectNodes("vlp:reports/vlp:report", XmlNSManager))
                        {
                            if ((subnode = reportnode.SelectSingleNode("vlp:id", XmlNSManager)) == null)
                            {
                                //log: név nélküli report

#if (DEBUG)
                                itemid = "Nevtelen!!!!!!!!!!!!!";
#else
							itemid = null;
#endif
                            }
                            else
                            {
                                itemid = subnode.InnerText.Trim();
                            }
                            if (itemid != null)
                            {
                                item = new ItemDescriptor();
                                item.Action = "Display";
                                item.Controller = "Report";
                                if ((subnode = reportnode.SelectSingleNode("vlp:name", XmlNSManager)) == null)
                                {
                                    itemname = langHelper.GetTranslation(itemid);
                                }
                                else
                                {
                                    itemname = langHelper.TranslateText(null, subnode.InnerText);
                                }
                                if ((subnode = reportnode.SelectSingleNode("vlp:description", XmlNSManager)) == null)
                                {
                                    item.Description = itemname;
                                }
                                else
                                {
                                    item.Description = langHelper.TranslateText(null, subnode.InnerText);
                                }
                                item.Name = itemname;
                                item.Params = new { role = userrole, report = itemid };
                                ugm.Items.Add(item);
                            }
                        }
                    }
                }

            }
            catch (Exception e)
            {
                Log.Error(e.Message);
            }
            Xml = null;
            XmlNSManager = null;
        }

        /// <summary>
        /// Creates a report object representing the given report from the report definitions XML file.
        /// <param name="userrole">A user role.</param>
        /// <param name="listname">The ID of the report.</param>
        /// <param name="parameters">The value of the report parameters.</param>
        /// <param name="modelstate">Object to hold the error messages.</param>
        /// <return>A report.</returns>
        /// </summary>
        public static Report ReadReport(string userrole, string listname, NameValueCollection parameters = null, ModelStateDictionary modelstate = null)
        {
            LangHelperNS langHelper = LangHelperNS.ReportXML;

            if (string.IsNullOrEmpty(userrole))
                userrole = "*";
            List<string> directories = new List<string>();
            string generalconnectionstring = null;
            bool bOK = (userrole == "*");
            Report rv = null;
            XmlNode general;

            if (!bOK)
            {
                foreach (var r in Roles.GetRolesForUser())
                {
                    if (r.Equals(userrole, StringComparison.CurrentCultureIgnoreCase))
                    {
                        bOK = true;
                        break;
                    }
                }
            }
            if (bOK)
            {
                rv = new Report();
                if (Xml == null)
                {
                    Xml = new XmlDocument();
                    Xml.Load(GetReportFileName());
                    XmlNSManager = new XmlNamespaceManager(Xml.NameTable);
                    XmlNSManager.AddNamespace("vlp", XmlNamespace);
                }
                if ((general = Xml.SelectSingleNode("vlp:userroles/vlp:general", XmlNSManager)) != null)
                {
                    foreach (XmlNode node in general.ChildNodes)
                    {
                        if (node.NodeType == XmlNodeType.Element)
                        {
                            switch (node.Name.ToLower())
                            {
                                case "directory":
                                    directories.Add(node.InnerText);
                                    break;
                                case "connectionstring":
                                    generalconnectionstring = node.InnerText;
                                    break;
                                case "wordcodeseparator":
                                    string sep = node.InnerText.Trim();
                                    if (sep.Length > 0)
                                        langHelper = new LangHelperNS(langHelper, sep, sep, sep);
                                    break;
                                default:
                                    Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownTypeInGeneralText", "Ismeretlen típus: {0}, helye 'userroles/general'"), node.Name));
                                    break;
                            }
                        }
                    }
                }

                foreach (XmlNode node in Xml.SelectNodes("vlp:userroles/vlp:userrole", XmlNSManager))
                {
                    string rolename = node.GetAttributeValue("name");

                    if (rolename == null)
                    {
                        bOK = (userrole == "*");
                    }
                    else
                    {
                        string[] rolelist = rolename.Split(new char[] { ';' });

                        foreach (var r in rolelist)
                        {
                            if (r.Equals(userrole, StringComparison.CurrentCultureIgnoreCase))
                            {
                                bOK = true;
                                break;
                            }
                        }
                    }
                    if (bOK)
                    {
                        XmlNode report = node.SelectSingleNode(string.Format("vlp:reports/vlp:report[vlp:id=\"{0}\"]", listname), XmlNSManager);

                        if (report != null)
                        {
                            List<string> dirs = new List<string>(directories);

                            //connectionstring = generalconnectionstring;
                            //if ((general = report.SelectSingleNode("vlp:general", XmlNSManager)) != null)
                            //{
                            //    foreach (XmlNode n in general.ChildNodes)
                            //    {
                            //        if (n.NodeType == XmlNodeType.Element)
                            //        {
                            //            switch (n.Name)
                            //            {
                            //                case "directory":
                            //                    dirs.Add(n.InnerText);
                            //                    break;
                            //                case "connectionstring":
                            //                    connectionstring = n.InnerText;
                            //                    break;
                            //                default:
                            //                    Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownTypeInListText", "Ismeretlen típus: {0}, lista ID: '{1}'"), node.Name, listname));
                            //                    break;
                            //            }
                            //        }
                            //    }
                            //}
                            //rv = ReadReport(report, dirs, connectionstring, listname);
                            rv = ReadReport(report, dirs, generalconnectionstring, listname, langHelper);
                            break;
                        }
                    }
                }
                Xml = null;
            }
            else
            {
                Log.Info(string.Format(LangHelperNS.ReportView.GetTranslation("Report.NoAccessRightText", "Nincs a '{0}' felhasználónak joga a '{1}/{2}' listához."), System.Web.HttpContext.Current.User.Identity.Name, userrole, listname));
            }

            return rv;
        }

        #endregion //Static public methods

        #region Static private methods

        /// <summary>
        /// Gets the report definitions XML file name with path.
        /// <return>The report definitions XML file name with path.</returns>
        /// </summary>
        private static string GetReportFileName()
        {
            string reportfile = WebConfigurationManager.AppSettings.Get("ReportsDescriptorsXMLFile");

            if (!string.IsNullOrEmpty(reportfile) || !File.Exists(reportfile))
                reportfile = System.Web.HttpContext.Current.Server.MapPath(reportfile);
            if (string.IsNullOrEmpty(reportfile) || !File.Exists(reportfile))
                reportfile = System.Web.HttpContext.Current.Server.MapPath("~/App_Data/Reports/Reports.xml");

            return reportfile;
        }

        /// <summary>
        /// Gets the report definitions from an XML structure.
        /// <param name="report">A node containing the report definition.</param>
        /// <param name="dirs">A list of directories where the report file (rdlc) can be searched for.</param>
        /// <param name="connectionstring">A default connectionstring.</param>
        /// <param name="listname">The searched name of the report.</param>
        /// <param name="defaultLangHelper">The (default) translator object.</param>
        /// <return>A report.</returns>
        /// </summary>
        private static Report ReadReport(XmlNode report, List<string> dirs, string connectionstring, string listname, LangHelperNS defaultLangHelper)
        {
            Report rv = new Report();
            string connstr = connectionstring, file, paramname, paramvalue, filepath;
            string[] fileinfo = new string[2];
            List<string> directory_list = new List<string>(dirs);
            XmlNode general;
            LangHelperNS langHelper = defaultLangHelper;

            rv.Name = listname;
            if ((general = report.SelectSingleNode("vlp:general", XmlNSManager)) != null)
            {
                foreach (XmlNode n in general.ChildNodes)
                {
                    if (n.NodeType == XmlNodeType.Element)
                    {
                        switch (n.Name)
                        {
                            case "directory":
                                directory_list.Add(n.InnerText);
                                break;
                            case "connectionstring":
                                connstr = n.InnerText;
                                break;
                            case "wordcodeseparator":
                                string sep = n.InnerText.Trim();
                                if (sep.Length > 0)
                                    langHelper = new LangHelperNS(langHelper, sep, sep, sep);
                                break;
                            default:
                                Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownTypeInReportText", "Ismeretlen típus: {0}, lista ID: '{1}'"), n.Name, listname));
                                break;
                        }
                    }
                }
            }

            foreach (XmlNode node in report.ChildNodes)
            {
                if (node.NodeType == XmlNodeType.Element)
                {
                    switch (node.Name.ToLower())
                    {
                        case "reportfile":
                            foreach (XmlNode n in node.ChildNodes)
                            {
                                if (n.NodeType == XmlNodeType.Element)
                                {
                                    switch (n.Name.ToLower())
                                    {
                                        case "name":
                                        case "filename":
                                            file = langHelper.TranslateText(null, n.InnerText.Trim());
                                            if (File.Exists(file))
                                            {
                                                rv.FileName = file;
                                            }
                                            else
                                            {
                                                fileinfo[1] = file;
                                                foreach (string dir in dirs)
                                                {
                                                    fileinfo[0] = dir;
                                                    filepath = Path.Combine(fileinfo);
                                                    if (File.Exists(filepath))
                                                    {
                                                        rv.FileName = filepath;
                                                        break;
                                                    }
                                                    else if (File.Exists(System.Web.HttpContext.Current.Server.MapPath("~/" + filepath)))
                                                    {
                                                        rv.FileName = System.Web.HttpContext.Current.Server.MapPath("~/" + filepath);
                                                        break;
                                                    }
                                                }
                                            }
                                            break;
                                        case "param":
                                            paramname = n.GetAttributeValue("name");
                                            if (!string.IsNullOrEmpty(paramname))
                                            {
                                                paramvalue = n.GetNodeValue();
                                                if (rv.RdlParameters.ContainsKey(paramname))
                                                {
                                                    Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.DuplicateParameterNameText", "Duplikált paraméter (reportfile/param): {0}, lista ID: '{1}'"), paramname, listname));
                                                }
                                                else
                                                {
                                                    rv.RdlParameters.Add(paramname, paramvalue);
                                                }
                                            }
                                            else
                                            {
                                                Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.MissingParameterNameText", "Hiányzó paraméternév (reportfile/param), lista ID: '{0}'"), listname));
                                            }
                                            break;
                                        default:
                                            Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownTypeInReportText", "Ismeretlen típus: {0}, lista ID: '{1}'"), n.Name, listname));
                                            break;
                                    }
                                }
                            }
                            break;
                        case "name":
                            rv.Name = langHelper.TranslateText(null, node.InnerText.Trim());
                            break;
                        case "id":
                            rv.ID = node.InnerText.Trim();
                            break;
                        case "description":
                            rv.Description = langHelper.TranslateText(null, node.InnerText.Trim());
                            break;
                        case "datasets":
                            ReadDataSetDescriptor(node, rv, connstr, langHelper);
                            break;
                        case "parameters":
                            ReadParameterDescriptor(node, rv, connstr, langHelper);
                            break;
                        case "general":
                            //Már korábban megtörtént.
                            break;
                        default:
                            Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownTypeInReportText", "Ismeretlen típus: {0}, lista ID: '{1}'"), node.Name, listname));
                            break;
                    }
                }
            }

            return rv;
        }

        /// <summary>
        /// Reads the parameter descriptor part of the report definition.
        /// <param name="parameters">A node containing the parameter descriptors.</param>
        /// <param name="connectionstring">A default connectionstring.</param>
        /// <param name="langHelper">The translator object.</param>
        /// </summary>
        protected static void ReadParameterDescriptor(XmlNode parameters, Report report, string connectionstring, LangHelperNS langHelper)
        {
            ReportParameter rp;
            XmlNode subnode;
            string val, optiontextfield, optionidfield, filter, id;
            ParameterReplace pr;

            foreach (XmlNode parameter in parameters.SelectNodes("vlp:parameter", XmlNSManager))
            {
                val = parameter.GetAttributeValue("name");
                if (string.IsNullOrEmpty(val))
                {
                    Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.NoParameterNameText", "Nincs neve a paraméternek (lista ID: '{0}')!"), report.Name));
                }
                else
                {
                    rp = new ReportParameter();
                    rp.Label = rp.Name = val;
                    if (!string.IsNullOrEmpty(rp.Name))
                    {
                        rp.Paramtype = parameter.GetAttributeValue("type", rp.Paramtype);
                        rp.ReplaceID = parameter.GetAttributeValue("replacestring", "@" + rp.Name + '@');
                        while (report.Parameters.ContainsKey(rp.ID))
                        {
                            rp.Name += "_";
                        }
                        report.Parameters.Add(rp.ID, rp);
                        foreach (XmlNode node in parameter.ChildNodes)
                        {
                            if (node.NodeType == XmlNodeType.Element)
                            {
                                switch (node.Name.ToLower())
                                {
                                    case "label":
                                        rp.Label = langHelper.TranslateText(null, node.GetNodeValue());
                                        break;
                                    case "value":
                                        rp.DefaultValue = node.GetAttributeValue("default", node.GetNodeValue());
                                        rp.MinValue = node.GetAttributeValue("min");
                                        rp.MaxValue = node.GetAttributeValue("max");
                                        break;
                                    case "required":
                                        rp.Required = true;
                                        break;
                                    case "showseconds":
                                        rp.ShowSeconds = true;
                                        break;
                                    case "length":
                                        val = node.GetNodeValue();
                                        if (!string.IsNullOrEmpty(val))
                                            rp.MinLength = rp.MaxLength = int.Parse(val);
                                        val = node.GetAttributeValue("min");
                                        if (!string.IsNullOrEmpty(val))
                                            rp.MinLength = int.Parse(val);
                                        val = node.GetAttributeValue("max");
                                        if (!string.IsNullOrEmpty(val))
                                            rp.MaxLength = int.Parse(val);
                                        break;
                                    case "display":
                                        val = node.GetAttributeValue("row");
                                        if (!string.IsNullOrEmpty(val))
                                            rp.Row = int.Parse(val);
                                        val = node.GetAttributeValue("col");
                                        if (!string.IsNullOrEmpty(val))
                                            rp.Column = int.Parse(val);
                                        break;
                                    case "spincontrol":
                                        if (rp.Paramtype.Equals("I", StringComparison.CurrentCultureIgnoreCase))
                                        {
                                            rp.SpinControl = new SpinControl();
                                            val = node.GetAttributeValue("inc");
                                            if (!string.IsNullOrEmpty(val))
                                                rp.SpinControl.SpinIncrementValue = int.Parse(val);
                                            val = node.GetAttributeValue("dec");
                                            if (!string.IsNullOrEmpty(val))
                                                rp.SpinControl.SpinDecrementValue = int.Parse(val);
                                            if (rp.SpinControl.SpinIncrementValue == 0)
                                                rp.SpinControl.SpinIncrementValue = 1;
                                            if (rp.SpinControl.SpinDecrementValue == 0)
                                                rp.SpinControl.SpinDecrementValue = 1;
                                            if (rp.MinValue == null)
                                                rp.MinValue = int.MinValue;
                                            if (rp.MaxValue == null)
                                                rp.MaxValue = int.MaxValue;
                                        }
                                        else
                                        {
                                            Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.SpinControlMisuseText", "Spincontrol jelenleg csak egész számoknál használható (paraméter '{0}', lista ID: '{1}')"), rp.Name, report.Name));
                                        }
                                        break;
                                    case "sqlreplace":
                                        id = node.GetAttributeValue("replacestring", rp.ReplaceID);
                                        if (rp.Replaces.ContainsKey(id))
                                        {
                                            Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.DuplicateSQLReplaceText", "Duplikált 'sqlreplace' azonosító: {0} (paraméter: '{1}', lista ID: '{2}')"), id, rp.Name, report.Name));
                                        }
                                        else
                                        {
                                            pr = new ParameterReplace(id);
                                            foreach (XmlNode value in node.SelectNodes("vlp:replace", XmlNSManager))
                                            {
                                                val = value.InnerText.Trim();
                                                if (value.Attributes.GetNamedItem("value") == null)
                                                    filter = null;
                                                else
                                                    filter = value.Attributes.GetNamedItem("value").Value;
                                                pr.AddItem(filter, val);
                                            }
                                            rp.Replaces.Add(id, pr);
                                        }
                                        break;
                                    case "values":
                                        if (rp.SelectOptions == null)
                                            rp.SelectOptions = new List<SelectListItem>();
                                        foreach (XmlNode value in node.SelectNodes("vlp:value", XmlNSManager))
                                        {
                                            val = value.GetNodeValue();
                                            id = value.GetAttributeValue("id", val);
                                            rp.SelectOptions.Add(new SelectListItem() { Value = id, Text = val });
                                        }
                                        if (rp.SelectOptions.Count > 0)
                                        {
                                            rp.WidgetType = "DropDownList";
                                        }
                                        break;
                                    case "reference":
                                        optiontextfield = optionidfield = null;
                                        if ((subnode = node.SelectSingleNode("vlp:optiontext", XmlNSManager)) != null)
                                        {
                                            optiontextfield = subnode.GetNodeValue();
                                        }
                                        if ((subnode = node.SelectSingleNode("vlp:optionid", XmlNSManager)) != null)
                                        {
                                            optionidfield = subnode.GetNodeValue();
                                        }
                                        if (optionidfield == null)
                                            optionidfield = optiontextfield;
                                        if (optiontextfield == null)
                                            optiontextfield = optionidfield;
                                        if ((subnode = node.SelectSingleNode("vlp:sql", XmlNSManager)) == null)
                                        {
                                            Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.InvalidReferenceDefinitionText", "Hibás referencia definíció, nincs 'sql' rész (paraméter: '{0}', lista ID: '{1}')"), rp.Name, report.Name));
#if (DEBUG)
                                            if (rp.SelectOptions == null)
                                            {
                                                rp.SelectOptions = new List<SelectListItem>();
                                                rp.SelectOptions.Add(new SelectListItem() { Text = "Invalid reference!", Value = "Error", Selected = true });
                                                rp.WidgetType = "DropDownList";
                                            }
#endif
                                        }
                                        else
                                        {
                                            rp.Reference = new ParameterReference();
                                            rp.Reference.Command = new DatabaseCommand(subnode.InnerText.Trim(), connectionstring, DatabaseCommand.DBCommandType.SQL);
                                            rp.Reference.IDField = optionidfield;
                                            rp.Reference.NameField = optiontextfield;
                                            rp.WidgetType = "AutocompleteTextBox";
                                            val = subnode.GetAttributeValue("type");
                                            if (!string.IsNullOrEmpty(val) && val.Equals("proc", StringComparison.CurrentCultureIgnoreCase))
                                            {
                                                rp.Reference.Command.CommandType = DatabaseCommand.DBCommandType.StoredProcedure;
                                            }
                                            if ((subnode = node.SelectSingleNode("vlp:connectionstring", XmlNSManager)) != null)
                                            {
                                                rp.Reference.Command.ConnectionString = subnode.GetNodeValue();
                                            }
                                            if (String.IsNullOrEmpty(rp.Reference.Command.ConnectionString))
                                            {
                                                rp.Reference.Command.ConnectionString = ConnectionStringStore.Get(QueryContext.APM_CONTEXT_NAME);
                                            }
                                        }
                                        break;
                                    default:
                                        Log.Warning(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownTypeInReportText", "Ismeretlen típus: {0}, lista ID: '{1}'"), node.Name, report.Name));
                                        break;
                                }
                            }
                        }
                    }
                }
            }
            report.ArrangeParams();
            report.SetDefaultValues();
        }

        /// <summary>
        /// Reads the dataset descriptor part of the report definition.
        /// <param name="parameters">A node containing the dataset descriptors.</param>
        /// <param name="connstr">A default connectionstring.</param>
        /// <param name="langHelper">The translator object.</param>
        /// </summary>
        protected static void ReadDataSetDescriptor(XmlNode datasets, Report report, string connstr, LangHelperNS langHelper)
        {
            DataSetDescriptor ds;
            string connectionstr, value, id, command;
            XmlNode sqlnode;

            foreach (XmlNode dataset in datasets.SelectNodes("vlp:dataset", XmlNSManager))
            {
                value = dataset.GetAttributeValue("name");
                if (string.IsNullOrEmpty(value))
                {
                    Log.Error(string.Format(LangHelperNS.ReportView.GetTranslation("Report.InvalidDatasetDefinitionText", "Hibás adatkapcsolatleíró (lista ID = {0}): nincs megadva név!"), report.ID));
                }
                else
                {
                    ds = new DataSetDescriptor();
                    ds.Name = value;
                    connectionstr = !String.IsNullOrEmpty(connstr) ? connstr : ConnectionStringStore.Get(QueryContext.APM_CONTEXT_NAME);

                    foreach (XmlNode node in dataset.ChildNodes)
                    {
                        if (node.NodeType == XmlNodeType.Element)
                        {
                            switch (node.Name)
                            {
                                case "initcommand":
                                    sqlnode = node.SelectSingleNode("vlp:sql", XmlNSManager);
                                    command = (sqlnode == null ? node.GetNodeValue() : sqlnode.GetNodeValue());
                                    if (!string.IsNullOrEmpty(command))
                                    {
                                        System.Data.DbType type;

                                        command = langHelper.TranslateText(null, command);
                                        ds.InitCommand = new DatabaseCommand(command, connectionstr, DatabaseCommand.DBCommandType.SQL);
                                        value = node.GetAttributeValue("type");
                                        if (!string.IsNullOrEmpty(value) && value.Equals("proc", StringComparison.CurrentCultureIgnoreCase))
                                        {
                                            ds.InitCommand.CommandType = DatabaseCommand.DBCommandType.StoredProcedure;
                                        }
                                        foreach (XmlNode param in node.SelectNodes("vlp:param", XmlNSManager))
                                        {
                                            id = param.GetAttributeValue("name");
                                            if (string.IsNullOrEmpty(id))
                                            {
                                                Log.Error(string.Format(LangHelperNS.ReportView.GetTranslation("Report.NoSQLParameterNameText", "Névtelen SQL paraméter (adatkapcsolat neve: '{0}', lista ID: '{1}')!"), ds.Name, report.ID));
                                            }
                                            else
                                            {
                                                value = param.GetNodeValue();
                                                type = DatabaseCommand.GetDBTypeFromName(param.GetAttributeValue("type"));
                                                ds.InitCommand.AddParameter(id, type, value);
                                            }
                                        }
                                    }
                                    break;
                                case "datacommand":
                                    sqlnode = node.SelectSingleNode("vlp:sql", XmlNSManager);
                                    command = (sqlnode == null ? node.GetNodeValue() : sqlnode.GetNodeValue());
                                    if (!string.IsNullOrEmpty(command))
                                    {
                                        System.Data.DbType type;

                                        command = langHelper.TranslateText(null, command);
                                        ds.DataCommand = new DatabaseCommand(command, connectionstr, DatabaseCommand.DBCommandType.SQL);
                                        value = node.GetAttributeValue("type");
                                        if (!string.IsNullOrEmpty(value) && value.Equals("proc", StringComparison.CurrentCultureIgnoreCase))
                                        {
                                            ds.DataCommand.CommandType = DatabaseCommand.DBCommandType.StoredProcedure;
                                        }
                                        foreach (XmlNode param in node.SelectNodes("vlp:param", XmlNSManager))
                                        {
                                            id = param.GetAttributeValue("name");
                                            if (string.IsNullOrEmpty(id))
                                            {
                                                Log.Error(string.Format(LangHelperNS.ReportView.GetTranslation("Report.NoSQLParameterNameText", "Névtelen SQL paraméter (adatkapcsolat neve: '{0}', lista ID: '{1}')!"), ds.Name, report.ID));
                                            }
                                            else
                                            {
                                                value = param.GetNodeValue();
                                                type = DatabaseCommand.GetDBTypeFromName(param.GetAttributeValue("type"));
                                                ds.DataCommand.AddParameter(id, type, value);
                                            }
                                        }
                                    }
                                    break;
                                case "connectionstring":
                                    connectionstr = node.GetNodeValue();
                                    break;
                                default:
                                    Log.Error(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownTypeInDatasetDescriptionText", "Hibás adatkapcsolatleíró (name = {0}): ismeretlen típus: {1} (lista ID: '{2}')!"), ds.Name, node.Name, report.ID));
                                    break;
                            }
                        }
                    }
                    if (ds.DataCommand == null)
                    {
                        Log.Error(string.Format(LangHelperNS.ReportView.GetTranslation("Report.NoDataCommandInDatasetDescriptionText", "Hibás adatkapcsolatleíró (name = {0}): nincs 'datacommand' elem (lista ID: '{1}')!"), ds.Name, report.ID));
                    }
                    else
                    {
                        ds.DataCommand.ConnectionString = connectionstr;
                        if (ds.InitCommand != null)
                            ds.InitCommand.ConnectionString = connectionstr;
                        report.DataSets.Add(ds);
                    }
                }
            }
        }

        #endregion //Static private methods

        #region private methods

        /// <summary>
        /// Arranges the parameters into a table to display in the dialog.
        /// </summary>
        private bool ArrangeParams()
        {
            int idx, colidx;
            SortedList<int, SortedList<int, ReportParameter>> sl = new SortedList<int, SortedList<int, ReportParameter>>();
            SortedList<int, ReportParameter> columns = new SortedList<int, ReportParameter>();
            SortedList<int, ReportParameter> row;
            List<ReportParameter> orphans = new List<ReportParameter>();
            ReportParameter last = null;

            foreach (var item in Parameters)
            {
                if (item.Value.WidgetType != "hidden")
                {
                    if (item.Value.Row >= 0)
                    {
                        if (sl.ContainsKey(item.Value.Row))
                        {
                            row = sl[item.Value.Row];
                        }
                        else
                        {
                            row = new SortedList<int, ReportParameter>();
                            sl.Add(item.Value.Row, row);
                        }
                    }
                    else
                    {
                        row = columns;
                    }
                    if (item.Value.Column >= 0)
                    {
                        if (item.Value.Column > MaxCol)
                            MaxCol = item.Value.Column;
                        row.Add(item.Value.Column, item.Value);
                    }
                    else
                    {
                        orphans.Add(item.Value);
                    }
                }
            }
            foreach (var column in columns)
            {
                idx = 0;
                while (sl.ContainsKey(idx) && sl[idx].ContainsKey(column.Key))
                    idx++;
                if (!sl.ContainsKey(idx))
                {
                    sl.Add(idx, new SortedList<int, ReportParameter>());
                }
                sl[idx].Add(column.Key, column.Value);
                column.Value.Row = idx;
            }
            columns = null;
            idx = 0;
            foreach (var item in orphans)
            {
                while (sl.ContainsKey(idx) && sl[idx].Count > MaxCol)
                    idx++;
                if (!sl.ContainsKey(idx))
                {
                    sl.Add(idx, new SortedList<int, ReportParameter>());
                }
                row = sl[idx];
                colidx = 0;
                while (row.ContainsKey(colidx))
                    colidx++;
                row.Add(colidx, item);
                item.Row = idx;
                item.Column = colidx;
            }
            ParameterList = new List<ReportParameter>();

            foreach (var r in sl)
            {
                foreach (var c in r.Value)
                {
                    if (last != null)
                    {
                        if (c.Value.Row == last.Row)
                            last.ColSpan = c.Value.Column - last.Column;
                        else
                            last.ColSpan = MaxCol - last.Column + 1;
                    }
                    last = c.Value;
                    ParameterList.Add(c.Value);
                }
            }
            if (last != null)
            {
                last.ColSpan = MaxCol - last.Column + 1;
            }

            return true;
        }

        /// <summary>
        /// Sets the default values of the dropdownlist widgets.
        /// </summary>
        private void SetDefaultValues()
        {
            ReportParameter rp;
            object dv;

            foreach (var item in Parameters)
            {
                rp = item.Value;
                if ((dv = rp.DefaultValue) != null && rp.SelectOptions != null)
                {
                    foreach (var option in rp.SelectOptions)
                    {
                        if (option.Value.Equals(dv))
                            option.Selected = true;
                    }
                }
            }
        }

        #endregion //private methods

        #region internal methods
        /// <summary>
        /// Checks the parameter values and prepares the report for displaying.
        /// <param name="parameters">The parameter values given by the user.</param>
        /// <param name="modelstate">The object for the error messages.</param>
        /// </summary>
        internal void CheckValues(NameValueCollection parameters, ModelStateDictionary modelstate, bool bForceParamDisplay)
        {
            ReportParameter rp;

            if (parameters == null)
            {
                _isCompleted = !Parameters.Any(p => p.Value.WidgetType != "hidden");
            }
            else
            {
                for (int i = 0; i < parameters.Count; i++)
                {
                    if (Parameters.ContainsKey(parameters.GetKey(i)))
                    {
                        Parameters[parameters.GetKey(i)].ResetError();
                        Parameters[parameters.GetKey(i)].DefaultValue = parameters.Get(i);
                    }
                }
                _isCompleted = !bForceParamDisplay && string.IsNullOrEmpty(parameters.Get("paramButton"));
                if (_isCompleted)
                    foreach (var item in Parameters)
                    {
                        if (!item.Value.CheckValue(modelstate))
                            _isCompleted = false;
                    }
            }
            if (_isCompleted)
            {
                Dictionary<string, string> sql_replaces = new Dictionary<string, string>();
                Dictionary<string, string> param_replaces = new Dictionary<string, string>();
                //composing sqls
                RdlEvaluatedParameters.Clear();
                foreach (var item in Parameters)
                {
                    rp = item.Value;
                    if (rp.Replaces.Count > 0)
                        foreach (var repl in rp.Replaces)
                        {
                            sql_replaces.Add(repl.Key, repl.Value.GetReplaceValue(rp, false));
                            param_replaces.Add(repl.Key, repl.Value.GetReplaceValue(rp, true));
                        }
                    if (!sql_replaces.ContainsKey(rp.ReplaceID))
                        sql_replaces.Add(rp.ReplaceID, rp.GetSQLValue(false));
                    if (!param_replaces.ContainsKey(rp.ReplaceID))
                        param_replaces.Add(rp.ReplaceID, rp.GetSQLValue(true));
                }
                foreach (var ds in DataSets)
                {
                    if (ds.DataCommand != null)
                    {
                        ds.DataCommand.PrepareSQLCommand(sql_replaces, param_replaces);
                    }
                    if (ds.InitCommand != null)
                    {
                        ds.InitCommand.PrepareSQLCommand(sql_replaces, param_replaces);
                    }
                }
                foreach (var rdlparam in RdlParameters)
                {
                    if (rdlparam.Value != null)
                    {
                        if (RdlEvaluatedParameters.ContainsKey(rdlparam.Key))
                            RdlEvaluatedParameters[rdlparam.Key] = RdlEvaluatedParameters[rdlparam.Key].Replace(param_replaces);
                        else
                            RdlEvaluatedParameters.Add(rdlparam.Key, rdlparam.Value.Replace(param_replaces));
                    }
                }
                //Nullozza az üreseket.
                var RdlKeys = new List<string>(RdlEvaluatedParameters.Keys);
                foreach (var key in RdlKeys)
                {
                    if (string.IsNullOrEmpty(RdlEvaluatedParameters[key]))
                    {
                        RdlEvaluatedParameters[key] = null;
                    }
                }
            }
            if (string.IsNullOrEmpty(FileName))
            {
                string msg = string.Format(LangHelperNS.ReportView.GetTranslation("Report.NoReportFileNameText", "Nncs megadva vagy hibás a report fájl neve (lista ID: '{0}')"), this.ID);

                Log.Warning(msg);
                modelstate.AddModelError(string.Empty, msg);
                _isCompleted = false;
            }
        }

        #endregion //internal methods
    }

    /// <summary>
    /// Structure to hold data for a parameter description.
    /// </summary>
    public class ReportParameter
    {
        #region private variables
        /// <summary>
        /// The error indicator.
        /// </summary>
        private bool _bError;

        /// <summary>
        /// The minimum value if any.
        /// </summary>
        private string _MinValue;

        /// <summary>
        /// The maximum value if any.
        /// </summary>
        private string _MaxValue;

        /// <summary>
        /// The data type of the parameter. 
        /// Valid options are: C (text), I (integer), F (float), B (bool), D (date), T (time), DT (datetime).
        /// </summary>
        private string _Paramtype = "C";

        /// <summary>
        /// The (default) value of the parameter in string format. 
        /// </summary>
        private string _DefaultValue;

        /// <summary>
        /// The (default) code value of the parameter in string format. 
        /// </summary>
        private string _DefaultCodeValue;

        #endregion private variables

        #region public variables
        /// <summary>
        /// The possible values of caracter case.
        /// </summary>
        public enum FieldCaseType
        {
            Normal,
            Uppercase,
            Lowercase
        }

        /// <summary>
        /// The name of the parameter.
        /// </summary>
        public string Name;

        /// <summary>
        /// The text representing the given parameter in texts. It will be replaced with the value.
        /// </summary>
        public string ReplaceID;

        /// <summary>
        /// The ID of the parameter used in html environment.
        /// </summary>
        public string ID
        {
            get
            {
                return Name.Trim(new char[] { '@', '[', ']', ' ', '\t', '{', '}', '(', ')', '&', '#' });
            }
        }

        /// <summary>
        /// The label of the parameter used in the parameter window.
        /// </summary>
        public string Label = null;

        /// <summary>
        /// If the value of the property is true than the seconds are displayed and used.
        /// Valid only for datetime and time in DateTimeBox and TimeBox.
        /// </summary>
        public bool ShowSeconds = false;

        /// <summary>
        /// Stores the spincontrol extra data if the control is to be displayed. Valid only for integer.
        /// </summary>
        public SpinControl SpinControl = null;

        /// <summary>
        /// The type of the widget used for data input. 
        /// Values are: TextBox (default), CheckBox, DateBox, DateTimeBox, TimeBox, DropDownList, AutocompleteTextBox.
        /// </summary>
        public string WidgetType = "TextBox";

        /// <summary>
        /// The case attribute of the widget text. Valid only for texts. 
        /// </summary>
        public FieldCaseType FieldCase = FieldCaseType.Normal;

        /// <summary>
        /// The list of the choosable options. Valid only for 'DropDownList'. 
        /// </summary>
        public List<SelectListItem> SelectOptions = null;

        /// <summary>
        /// The list of characters that can be used in the given control. Empty string means no restriction. 
        /// </summary>
        public string FilterCharacterSet = "";

        /// <summary>
        /// The row number where the control is to be placed (starts from 0). If its value is -1, the control will be placed automatically.
        /// </summary>
        public int Row = -1;

        /// <summary>
        /// The column number where the control is to be placed (starts from 0). If its value is -1, the control will be placed automatically.
        /// </summary>
        public int Column = -1;

        /// <summary>
        /// The number of columns used by the control.
        /// </summary>
        public int ColSpan = 1;

        /// <summary>
        /// The minimum value if any.
        /// </summary>
        public object MinValue
        {
            get
            {
                return GetValue(_MinValue);
            }

            set
            {
                _MinValue = (string)value;
            }
        }

        /// <summary>
        /// The maximum value if any.
        /// </summary>
        public object MaxValue
        {
            get
            {
                return GetValue(_MaxValue);
            }

            set
            {
                _MaxValue = (string)value;
            }
        }

        /// <summary>
        /// If its value is true, the field is required.
        /// </summary>
        public bool Required = false;

        /// <summary>
        /// Minimum value of text's length if any.
        /// </summary>
        public int MinLength;

        /// <summary>
        /// Maximum value of text's length if any.
        /// </summary>
        public int MaxLength;

        /// <summary>
        /// The data type of the parameter. 
        /// Valid options are: C (text), I (integer), F (float), B (bool), D (date), T (time), DT (datetime), X:Name (extra, rejtett paraméterek).
        /// </summary>
        public string Paramtype
        {
            get
            {
                return _Paramtype;
            }

            set
            {
                _Paramtype = value.ToUpper();
                switch (_Paramtype)
                {
                    case "C":   //text
                        WidgetType = "TextBox";
                        FieldCase = ReportParameter.FieldCaseType.Normal;
                        break;
                    case "E":   //expression
                        WidgetType = "TextBox";
                        FieldCase = ReportParameter.FieldCaseType.Normal;
                        break;
                    case "I":   //integer
                        WidgetType = "TextBox";
                        FieldCase = ReportParameter.FieldCaseType.Normal;
                        FilterCharacterSet = "0123456789 +-";
                        break;
                    case "F":   //float
                        WidgetType = "TextBox";
                        FieldCase = ReportParameter.FieldCaseType.Normal;
                        FilterCharacterSet = "0123456789 .,+-";
                        break;
                    case "B":   //bool
                        WidgetType = "CheckBox";
                        break;
                    case "D":   //date
                        WidgetType = "DateBox";
                        break;
                    case "DT":   //datetime
                        WidgetType = "DateTimeBox";
                        break;
                    case "T":   //time
                        WidgetType = "TimeBox";
                        break;
                    default:
                        if (_Paramtype.StartsWith("X:"))
                        {
                            WidgetType = "hidden";
                            SetInternalParameter(_Paramtype.Substring(2));
                        }
                        else
                        {
                            //hibás típus
                        }
                        break;
                }
            }
        }

        /// <summary>
        /// The (default) value of the parameter in native format (corresponding to Paramtype). 
        /// </summary>
        public object DefaultValue
        {
            get
            {
                return GetValue(_DefaultValue);
            }

            set
            {
                _DefaultValue = (string)value;
                if (this.SelectOptions != null)
                {
                    _DefaultCodeValue = _DefaultValue;
                }
                else if (this.Reference != null)
                {
                    _DefaultCodeValue = this.GetCodeValue();
                }
                else
                {
                    _DefaultCodeValue = _DefaultValue;
                }
            }
        }

        /// <summary>
        /// The (default) code value of the parameter in native format (corresponding to Paramtype). 
        /// </summary>
        public object DefaultCodeValue
        {
            get
            {
                return GetValue(_DefaultCodeValue);
            }
        }

        /// <summary>
        /// The list of the replaces of the parameter. 
        /// </summary>
        public Dictionary<string, ParameterReplace> Replaces = new Dictionary<string, ParameterReplace>();

        /// <summary>
        /// The ParameterReference object if any. 
        /// </summary>
        public ParameterReference Reference;

        #endregion //public variables

        /// <summary>
        /// Sets the value of an internal parameters. 
        /// <param name="p">The name of the parameter.</param>
        /// </summary>
        private void SetInternalParameter(string p)
        {
            MembershipUser user;

            switch (p.ToUpper())
            {
                case "USERID":
                    _Paramtype = "G";
                    user = System.Web.Security.Membership.GetUser();
                    if (user != null)
                        DefaultValue = user.ProviderUserKey.ToString();
                    break;
                case "USERNAME":
                    _Paramtype = "C";
                    user = System.Web.Security.Membership.GetUser();
                    if (user != null)
                        DefaultValue = user.UserName;
                    break;
                case "NOW":
                    _Paramtype = "DT";
                    DefaultValue = "now";
                    break;
                case "TODAY":
                    _Paramtype = "D";
                    DefaultValue = "today";
                    break;
            }
        }

        /// <summary>
        /// Converts the given string value to the parameters's native format. 
        /// <param name="p">The string value to be converted.</param>
        /// <return>The converted value.</returns>
        /// </summary>
        private object GetValue(string p)
        {
            object rv = null;
            string s = (Paramtype.Equals("C") || p == null ? p : p.Split(new char[] { ',' })[0]);

            if (!string.IsNullOrEmpty(p))
            {
                try
                {
                    LangHelperNS langHelper = LangHelperNS.ReportView;
                    System.Globalization.CultureInfo cultureInfo = System.Threading.Thread.CurrentThread.CurrentUICulture;
                    string timeFormat = (ShowSeconds) ? (langHelper.GetTranslation("DateTime.LongTimeFormat", cultureInfo.DateTimeFormat.LongTimePattern)) : (langHelper.GetTranslation("DateTime.ShortTimeFormat", cultureInfo.DateTimeFormat.ShortTimePattern)),
                            dateFormat = langHelper.GetTranslation("DateTime.DateFormat", cultureInfo.DateTimeFormat.ShortDatePattern);

                    switch (Paramtype)
                    {
                        case "C":   //text
                            rv = s;
                            break;
                        case "I":   //integer
                            rv = int.Parse(s);
                            break;
                        case "F":   //float
                            rv = float.Parse(s, System.Globalization.CultureInfo.InvariantCulture);
                            break;
                        case "B":   //bool
                            rv = bool.Parse(s);
                            break;
                        case "D":   //date
                            rv = RelativeDateParser.Parse(s, dateFormat, null);
                            break;
                        case "DT":   //datetime
                            rv = RelativeDateParser.Parse(s, dateFormat, timeFormat);
                            break;
                        case "T":   //time
                            rv = RelativeDateParser.Parse(s, null, timeFormat);
                            break;
                        case "G":   //guid
                            rv = Guid.Parse(s);
                            break;
                        default:
                            Log.Error(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownDataTypeText", "Ismeretlen adattípus: {0}, paraméter neve: {1}"), this.Paramtype, this.Name));
                            this._bError = true;
                            break;
                    }

                }
                catch (Exception e)
                {
                    Log.Error(e.Message);
                    this._bError = true;
                }
            }

            return rv;
        }

        #region internal (public) methods
        /// <summary>
        /// Checks whether the given filter value matches to the value of the parameter. 
        /// <param name="p">The filter value.</param>
        /// <return>True if the match is succeded.</returns>
        /// </summary>
        internal bool Matches(string p)
        {
            bool rv = false;
            object val = DefaultCodeValue;

            try
            {
                if (p == null)
                    rv = true;
                else if (p.Length == 0)
                {
                    rv = (val == null || (val is string && ((string)val).Length == 0));
                }
                else
                {
                    int i;
                    string op = "=";
                    object pval;

                    for (i = 0; i < p.Length && ">=<".IndexOf(p[i]) >= 0; i++) ;
                    if (i > 0)
                    {
                        op = p.Substring(0, i);
                        p = p.Remove(0, i);
                    }
                    pval = GetValue(p);
                    switch (op)
                    {
                        case "=":
                            rv = pval.Equals(val);
                            break;
                        case "<":
                            if (pval is string)
                            {
                                rv = (((string)pval).CompareTo(val) > 0);
                            }
                            else if (pval is int)
                            {
                                rv = (((int)pval).CompareTo(val) > 0);
                            }
                            else if (pval is float)
                            {
                                rv = (((float)pval).CompareTo(val) > 0);
                            }
                            else if (pval is DateTime)
                            {
                                rv = (((DateTime)pval).CompareTo(val) > 0);
                            }
                            else if (pval is bool)
                            {
                                rv = (((bool)pval).CompareTo(val) > 0);
                            }
                            break;
                        case "<=":
                            if (pval is string)
                            {
                                rv = (((string)pval).CompareTo(val) >= 0);
                            }
                            else if (pval is int)
                            {
                                rv = (((int)pval).CompareTo(val) >= 0);
                            }
                            else if (pval is float)
                            {
                                rv = (((float)pval).CompareTo(val) >= 0);
                            }
                            else if (pval is DateTime)
                            {
                                rv = (((DateTime)pval).CompareTo(val) >= 0);
                            }
                            else if (pval is bool)
                            {
                                rv = (((bool)pval).CompareTo(val) >= 0);
                            }
                            break;
                        case ">":
                            if (pval is string)
                            {
                                rv = (((string)pval).CompareTo(val) < 0);
                            }
                            else if (pval is int)
                            {
                                rv = (((int)pval).CompareTo(val) < 0);
                            }
                            else if (pval is float)
                            {
                                rv = (((float)pval).CompareTo(val) < 0);
                            }
                            else if (pval is DateTime)
                            {
                                rv = (((DateTime)pval).CompareTo(val) < 0);
                            }
                            else if (pval is bool)
                            {
                                rv = (((bool)pval).CompareTo(val) < 0);
                            }
                            break;
                        case ">=":
                            if (pval is string)
                            {
                                rv = (((string)pval).CompareTo(val) <= 0);
                            }
                            else if (pval is int)
                            {
                                rv = (((int)pval).CompareTo(val) <= 0);
                            }
                            else if (pval is float)
                            {
                                rv = (((float)pval).CompareTo(val) <= 0);
                            }
                            else if (pval is DateTime)
                            {
                                rv = (((DateTime)pval).CompareTo(val) <= 0);
                            }
                            else if (pval is bool)
                            {
                                rv = (((bool)pval).CompareTo(val) <= 0);
                            }
                            break;
                        default:
                            Log.Error(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownOperatorText", "Ismeretlen operátor: '{0}', paraméter neve: {1}"), op, this.Name));
                            this._bError = true;
                            break;
                    }
                }

            }
            catch (Exception e)
            {
                rv = false;
                Log.Error(e.Message);
                this._bError = true;
            }

            return rv;
        }

        /// <summary>
        /// Gets the value of the parameter whitch can be used in an SQL expression. 
        /// <param name="bForSQLparams">If true, the value will be used in a SQL parameter.</param>
        /// <return>The converted value.</returns>
        /// </summary>
        internal string GetSQLValue(bool bForSQLparams)
        {
            string rv = "";
            object val = DefaultCodeValue;

            if (val != null)
            {
                try
                {
                    switch (Paramtype)
                    {
                        case "C":   //text
                            if (bForSQLparams)
                                rv = val as string;
                            else
                                rv = "'" + ((string)val).Replace("'", "''") + "'";
                            break;
                        case "E":   //expression
                            rv = (string)val;
                            break;
                        case "I":   //integer
                            rv = ((int)val).ToString();
                            break;
                        case "F":   //float
                            rv = ((float)val).ToString();
                            break;
                        case "B":   //bool
                            rv = (((bool)val) ? "1" : "0");
                            break;
                        case "D":   //date
                            rv = ((DateTime)val).ToString("s");
                            rv = rv.Remove(rv.IndexOf('T'));
                            if (!bForSQLparams)
                            {
                                rv = "'" + rv + "'";
                            }
                            break;
                        case "DT":   //datetime
                            rv = ((DateTime)val).ToString("s").Replace('T', ' ');
                            if (!ShowSeconds)
                                rv = rv.Remove(rv.Length - 3);
                            if (!bForSQLparams)
                            {
                                rv = "'" + rv + "'";
                            }
                            break;
                        case "T":   //time
                            rv = ((DateTime)val).ToString("s");
                            rv = rv.Remove(0, rv.IndexOf('T') + 1);
                            if (!bForSQLparams)
                            {
                                rv = "'" + rv + "'";
                            }
                            break;
                        case "G":   //guid
                            rv = val.ToString();
                            if (!bForSQLparams)
                            {
                                rv = "'" + rv + "'";
                            }
                            break;
                        default:
                            Log.Error(string.Format(LangHelperNS.ReportView.GetTranslation("Report.UnknownDataTypeText", "Ismeretlen adattípus: {0}, paraméter neve: {1}"), this.Paramtype, this.Name));
                            this._bError = true;
                            break;
                    }

                }
                catch (Exception e)
                {
                    Log.Error(e.Message);
                    this._bError = true;
                    rv = "";
                }
            }

            return rv;
        }

        /// <summary>
        /// Checks if the given values of parameters meet the criterias. 
        /// <param name="modelstate">The object used to collect the error messages.</param>
        /// <return>True if the parameters fulfill the conditions.</returns>
        /// </summary>
        internal bool CheckValue(ModelStateDictionary modelstate)
        {
            bool rv = true;

            if (this.DefaultCodeValue == null)
            {
                if (this.Required)
                {
                    modelstate.AddModelError(this.ID, LangHelperNS.ReportView.GetTranslation("Report.FieldRequiredText", "A mezőt ki kell tölteni!"));
                    rv = false;
                }
            }
            else if (this.MinLength > 0 && this._DefaultCodeValue.Length < this.MinLength)
            {
                modelstate.AddModelError(this.ID, string.Format(LangHelperNS.ReportView.GetTranslation("Report.StringTooShortText", "Túl rövid a mező tartalma (min. {0} karakter kell)!"), this.MinLength));
                rv = false;
            }
            else if (this.MaxLength > 0 && this._DefaultCodeValue.Length > this.MaxLength)
            {
                modelstate.AddModelError(this.ID, string.Format(LangHelperNS.ReportView.GetTranslation("Report.StringTooLongText", "Túl hosszú a mező tartalma (max. {0} karakter lehet)!"), this.MaxLength));
                rv = false;
            }
            else if (this.MinValue != null && Matches("<" + _MinValue))
            {
                modelstate.AddModelError(this.ID, string.Format(LangHelperNS.ReportView.GetTranslation("Report.ValueTooSmallText", "Nagyobb értéket kell megadni (min. {0} kell)!"), this.MinValue));
                rv = false;
            }
            else if (this.MaxValue != null && Matches(">" + _MaxValue))
            {
                modelstate.AddModelError(this.ID, string.Format(LangHelperNS.ReportView.GetTranslation("Report.ValueTooLargeText", "Kisebb értéket kell megadni (max. {0} lehet)!"), this.MaxValue));
                rv = false;
            }

            return rv && !this._bError;
        }

        /// <summary>
        /// Gets the text value of an autocomplete fields. 
        /// <return>The value or null.</returns>
        /// </summary>
        internal string GetCodeValue()
        {
            string rv = null;

            if (!string.IsNullOrEmpty(_DefaultValue) && Reference != null)
            {
                SqlConnection mySqlConnection = null;
                SqlCommand mySqlCommand = null;
                SqlDataReader mySqlDataReader = null;

                try
                {
                    Reference.Command.PrepareSQLCommand();
                    mySqlConnection = new SqlConnection();
                    mySqlConnection.ConnectionString = Reference.Command.ConnectionString;

                    mySqlCommand = new SqlCommand();
                    mySqlCommand.CommandText = Reference.Command.PreparedCommand;
                    mySqlCommand.Parameters.Add(new SqlParameter("filter", _DefaultValue));
                    mySqlCommand.CommandType = System.Data.CommandType.Text;
                    mySqlCommand.Connection = mySqlConnection;
                    CommandParameter.SetCommandTimeout(mySqlCommand);

                    mySqlCommand.Connection.Open();
                    mySqlDataReader = mySqlCommand.ExecuteReader(System.Data.CommandBehavior.CloseConnection | System.Data.CommandBehavior.SingleRow);

                    int iKod = mySqlDataReader.GetOrdinal(Reference.IDField);
                    int iName = mySqlDataReader.GetOrdinal(Reference.NameField);

                    if (mySqlDataReader.HasRows)
                    {
                        while (mySqlDataReader.Read())
                        {
                            //rv = mySqlDataReader.GetString(iKod);
                            //WIND 2014.05.28 Ezzel nem lehet részértéket megadni
                            rv = string.Format("{0}", mySqlDataReader.GetValue(iKod));   //TG
                        }
                        //WIND 2014.05.28 Azért, hogy részértéket is meg lehessen adni
                        if (rv.Contains(_DefaultValue))
                            rv = _DefaultValue;
                    }
                    else
                    {
                        Log.modelstate.AddModelError(this.ID, string.Format(LangHelperNS.ReportView.GetTranslation("Report.ValueNotFoundInDatabaseText", "Nincs ilyen érték az adatbázisban: {0}!"), _DefaultValue));
                        this._bError = true;
                    }
                }
                catch (System.Exception e)
                {
                    Log.Error(e.Message);
                    this._bError = true;
                }
                if (mySqlDataReader != null)
                    mySqlDataReader.Dispose();
                if (mySqlCommand != null)
                    mySqlCommand.Dispose();
                if (mySqlConnection != null)
                    mySqlConnection.Dispose();

            }

            return rv;
        }

        /// <summary>
        /// Resets the error flag. 
        /// </summary>
        internal void ResetError()
        {
            this._bError = false;
        }

        #endregion //internal (public) methods
    }

    /// <summary>
    /// Structure to hold the dataset descriptor values.
    /// </summary>
    public class DataSetDescriptor
    {

        /// <summary>
        /// The name of the dataset. Must meet to the dataset name in the report file (rdlc).
        /// </summary>
        public string Name;

        /// <summary>
        /// The command used to get the data.
        /// </summary>
        public DatabaseCommand DataCommand;

        /// <summary>
        /// The command used to init the data.
        /// </summary>
        public DatabaseCommand InitCommand;

    }

    /// <summary>
    /// Holds the data need for a spincontrol.
    /// </summary>
    public class SpinControl
    {
        /// <summary>
        /// The value of increment.
        /// </summary>
        public int SpinIncrementValue;

        /// <summary>
        /// The value of decrement.
        /// </summary>
        public int SpinDecrementValue;
    }

    /// <summary>
    /// Holds information and methods to handle parameter replacement.
    /// </summary>
    public class ParameterReplace
    {
        /// <summary>
        /// A filter - value pair.
        /// </summary>
        private class ReplaceItem
        {
            /// <summary>
            /// A filter text. The '>', '>=', '<', '<=' operators can be used. Lack of any operators means '=' operator.
            /// </summary>
            public string Filter;

            /// <summary>
            /// A text to replace if the value of the parameter matches the filter.
            /// </summary>
            public string Value;
        }

        #region private variables
        /// <summary>
        /// A string (id) to be replaced.
        /// </summary>
        private string ParamID;

        /// <summary>
        /// A list of filter - value pairs.
        /// </summary>
        private List<ReplaceItem> Replaces;

        #endregion //private variables

        /// <summary>
        /// A constructor.
        /// <param name="paramID">The text to be replaced (parameter id).</param>
        /// </summary>
        public ParameterReplace(string paramID)
        {
            this.ParamID = paramID;
            this.Replaces = new List<ReplaceItem>();
        }

        #region public Methods
        /// <summary>
        /// Add a filter - value pair to the list.
        /// <param name="filter">The filter.</param>
        /// <param name="value">A text to replace if the value of the parameter matches the filter.</param>
        /// </summary>
        public void AddItem(string filter, string value)
        {
            Replaces.Add(new ReplaceItem() { Filter = filter, Value = value });
        }

        /// <summary>
        /// Replaces the ID of the given parameter with the parameter's value in the first replace string where the filter 
        /// matches the value of the parameter.
        /// <param name="rp">A ReportParameter object.</param>
        /// <param name="bForSQLParams">If true the value will be used in a SQL parameter.</param>
        /// <return>The found string in where the parameter§s ID is replaced with the parameter's value or null if no match is found.</returns>
        /// </summary>
        public string GetReplaceValue(ReportParameter rp, bool bForSQLParams)
        {
            foreach (var repl in Replaces)
            {
                if (rp.Matches(repl.Filter))
                {
                    return repl.Value.Replace(rp.ReplaceID, rp.GetSQLValue(bForSQLParams));
                }
            }

            return null;
        }

        #endregion // public Methods
    }

    /// <summary>
    /// Holds the data for a parameter reference, i.e. an sql to collecting a table's data.
    /// </summary>
    public class ParameterReference
    {
        /// <summary>
        /// The command to get the reference data.
        /// </summary>
        public DatabaseCommand Command;

        /// <summary>
        /// The name of the 'ID' field.
        /// </summary>
        public string IDField;

        /// <summary>
        /// The name of the 'name' field.
        /// </summary>
        public string NameField;
    }

    /// <summary>
    /// Holds the data needed for a database command.
    /// </summary>
    public class DatabaseCommand
    {
        /// <summary>
        /// Possible types of a database command.
        /// </summary>
        public enum DBCommandType
        {
            None,
            SQL,
            StoredProcedure
        }

        #region private variables
        /// <summary>
        /// The SQL command or stored procedure.
        /// </summary>
        private string Command;

        /// <summary>
        /// The parameters of the command.
        /// </summary>
        private Dictionary<string, CommandParameter> CommandParameters;

        #endregion //private variables

        #region public variables
        /// <summary>
        /// The prepared command, ready to be executed.
        /// </summary>
        public string PreparedCommand;

        /// <summary>
        /// The prepared parameters, ready to be used in execution.
        /// </summary>
        public Dictionary<string, CommandParameter> PreparedCommandParameters;

        /// <summary>
        /// The type of the database command.
        /// </summary>
        public DBCommandType CommandType;

        /// <summary>
        /// The connection string.
        /// </summary>
        public string ConnectionString;

        #endregion //public variables

        /// <summary>
        /// The constructor.
        /// </summary>
        public DatabaseCommand(string Command, string ConnectionString, DBCommandType CommandType = DBCommandType.SQL)
        {
            this.Command = Command;
            this.ConnectionString = ConnectionString;
            this.CommandType = CommandType;
        }

        /// <summary>
        /// The empty.
        /// </summary>
        public DatabaseCommand()
        {
            this.CommandType = DBCommandType.None;
        }

        /// <summary>
        /// Prepares the command string and parameters for use.
        /// <param name="sql_values">The key-value pairs used in the replacement of SQL statement.</param>
        /// <param name="param_values">The key-value pairs used in the replacement of parameters.</param>
        /// </summary>
        public void PrepareSQLCommand(Dictionary<string, string> sql_values = null, Dictionary<string, string> param_values = null)
        {
            if (sql_values == null)
                PreparedCommand = Command;
            else
                PreparedCommand = Command.Replace(sql_values);
            if (CommandParameters == null)
            {
                PreparedCommandParameters = null;
            }
            else
            {
                if (PreparedCommandParameters == null)
                    PreparedCommandParameters = new Dictionary<string, CommandParameter>();
                else
                    PreparedCommandParameters.Clear();
                if (param_values != null)
                {
                    foreach (var item in CommandParameters)
                    {
                        PreparedCommandParameters.Add(item.Key, new CommandParameter(item.Value.Name, item.Value.Type, item.Value.Value.Replace(param_values)));
                    }
                }
                else
                {
                    PreparedCommandParameters = new Dictionary<string, CommandParameter>(CommandParameters);
                }
            }
        }

        /// <summary>
        /// Adds a SQL parameter to the parameter list.
        /// <param name="id">The parameter id.</param>
        /// <param name="type">The parameter's type.</param>
        /// <param name="val">The parameter value.</param>
        /// </summary>
        public void AddParameter(string id, System.Data.DbType type, string val)
        {
            if (CommandParameters == null)
                CommandParameters = new Dictionary<string, CommandParameter>();
            if (!CommandParameters.ContainsKey(id))
                CommandParameters.Add(id, new CommandParameter(id, type, val));
        }

        /// <summary>
        /// Gets the data type name.
        /// <param name="type">The data type name as string.</param>
        /// <return>The data type corrensponding the given parameter.</returns>
        /// </summary>
        public static System.Data.DbType GetDBTypeFromName(string type)
        {
            System.Data.DbType rv = System.Data.DbType.String;

            if (!string.IsNullOrEmpty(type))
            {

                switch (type.ToLower())
                {
                    case "ansistring":  //A variable-length stream of non-Unicode characters ranging between 1 and 8,000 characters.
                        rv = System.Data.DbType.AnsiString;
                        break;
                    case "binary":      //A variable-length stream of binary data ranging between 1 and 8,000 bytes.
                        rv = System.Data.DbType.Binary;
                        break;
                    case "byte":        //An 8-bit unsigned integer ranging in value from 0 to 255.
                        rv = System.Data.DbType.Byte;
                        break;
                    case "boolean":     //A simple type representing Boolean values of true or false.
                        rv = System.Data.DbType.Boolean;
                        break;
                    case "currency":    //A currency value ranging from -2 63 (or -922,337,203,685,477.5808) to 2 63 -1 (or +922,337,203,685,477.5807) with an accuracy to a ten-thousandth of a currency unit.
                        rv = System.Data.DbType.Currency;
                        break;
                    case "date":        //A type representing a date value.
                        rv = System.Data.DbType.Date;
                        break;
                    case "datetime":    //A type representing a date and time value.
                        rv = System.Data.DbType.DateTime;
                        break;
                    case "decimal":     //A simple type representing values ranging from 1.0 x 10 -28 to approximately 7.9 x 10 28 with 28-29 significant digits.
                        rv = System.Data.DbType.Decimal;
                        break;
                    case "double":      //A floating point type representing values ranging from approximately 5.0 x 10 -324 to 1.7 x 10 308 with a precision of 15-16 digits.
                        rv = System.Data.DbType.Double;
                        break;
                    case "guid":        //A globally unique identifier (or GUID).
                        rv = System.Data.DbType.Guid;
                        break;
                    case "int16":       //An integral type representing signed 16-bit integers with values between -32768 and 32767.
                        rv = System.Data.DbType.Int16;
                        break;
                    case "int32":       //An integral type representing signed 32-bit integers with values between -2147483648 and 2147483647.
                        rv = System.Data.DbType.Int32;
                        break;
                    case "int64":       //An integral type representing signed 64-bit integers with values between -9223372036854775808 and 9223372036854775807.
                        rv = System.Data.DbType.Int64;
                        break;
                    case "object":      //A general type representing any reference or value type not explicitly represented by another DbType value.
                        rv = System.Data.DbType.Object;
                        break;
                    case "sbyte":       //An integral type representing signed 8-bit integers with values between -128 and 127.
                        rv = System.Data.DbType.SByte;
                        break;
                    case "single":      //A floating point type representing values ranging from approximately 1.5 x 10 -45 to 3.4 x 10 38 with a precision of 7 digits.
                        rv = System.Data.DbType.Single;
                        break;
                    case "string":      //A type representing Unicode character strings.
                        rv = System.Data.DbType.String;
                        break;
                    case "time":        //A type representing a SQL Server DateTime value. If you want to use a SQL Server time value, use Time.
                        rv = System.Data.DbType.Time;
                        break;
                    case "uint16":      //An integral type representing unsigned 16-bit integers with values between 0 and 65535.
                        rv = System.Data.DbType.UInt16;
                        break;
                    case "uint32":      //An integral type representing unsigned 32-bit integers with values between 0 and 4294967295.
                        rv = System.Data.DbType.UInt32;
                        break;
                    case "uint64":      //An integral type representing unsigned 64-bit integers with values between 0 and 18446744073709551615.
                        rv = System.Data.DbType.UInt64;
                        break;
                    case "varnumeric":  //A variable-length numeric value.
                        rv = System.Data.DbType.VarNumeric;
                        break;
                    case "ansistringfixedlength":  //A fixed-length stream of non-Unicode characters.
                        rv = System.Data.DbType.AnsiStringFixedLength;
                        break;
                    case "stringfixedlength":       //A fixed-length string of Unicode characters.
                        rv = System.Data.DbType.StringFixedLength;
                        break;
                    case "xml":             //A parsed representation of an XML document or fragment.
                        rv = System.Data.DbType.Xml;
                        break;
                    case "datetime2":       //Date and time data. Date value range is from January 1,1 AD through December 31, 9999 AD. Time value range is 00:00:00 through 23:59:59.9999999 with an accuracy of 100 nanoseconds.
                        rv = System.Data.DbType.DateTime2;
                        break;
                    case "datetimeoffset":  //Date and time data with time zone awareness. Date value range is from January 1,1 AD through December 31, 9999 AD. Time value range is 00:00:00 through 23:59:59.9999999 with an accuracy of 100 nanoseconds. Time zone value range is -14:00 through +14:00.
                        rv = System.Data.DbType.DateTimeOffset;
                        break;
                }
            }

            return rv;
        }
    }
}