///
/// Copyright (c) 2020 Sensus Slovensko a.s.
///
using System;
using System.Xml.Serialization;
using Config.Entities;
using TBF.BenchControl.Generic;
using TBF.Resources;
using System.Collections.Generic;

namespace TBF.BenchControl.Various.StatisticsMonitoring
{
    /// <summary>
    /// Serializable configuration of Various.StatisticsMonitoring component.
    /// </summary>
    public class StatisticsCfg : ComponentCfgBase, Generic.IComponentCfg, Config.Entities.IParamsProvider
    {
        public static XmlSerializer Serializer = XmlSerializer.FromTypes(new[] { typeof(StatisticsCfg) })[0];
        public override XmlSerializer GetSerializer() { return Serializer; }

        public IComponentCfgCtrl GetControl() { return new Configs.ParamsProvider.ComponentCfgCtrl(this, null); }

        ///
        /// Serialized parameters 
        ///
        public string EventSource;
        public int iPerlHeadFailureRateThreshold;   /// 0 = off, 1..100% event is triggered when percentage reaches this level

        /// Private parameterless constructor invoked by all other (public) constructors
        StatisticsCfg() { }

        public StatisticsCfg(string name, IComponentFactory factory)
            : this()
        {
            Name = name;
            Factory = factory;
            ParentName = string.Empty;
            InitializeAll();
        }

        public string ComponentName { get { return Name; } }

        public void InitializeAll()
        {
            EventSource = "Štatistiky";         /// 0
            iPerlHeadFailureRateThreshold = 20;                /// 1
        }

        string[] paramNames = new string[]
		{
            "Event source",                             /// 0
            "Threshold for iPERL head failure rate [%] (0=off)",     /// 1
        };
        public string ParamName(int i) { return paramNames[i]; }
        public int ParamsCount() { return paramNames.Length; }

        public IList<string> ParamValues(int i)
        {
            return null;
        }

        public string ToString(int i)
        {
            switch (i)
            {
                case -1: return string.Format("Name={0}, EventSource={1}, FailureRatePct={2}, ...", Name, EventSource, iPerlHeadFailureRateThreshold);
                case 0: return EventSource;
                case 1: return iPerlHeadFailureRateThreshold.ToString();
                default: return string.Empty;
            }
        }

        public CfgUpdateFlags UpdateParam(int i, string strValue)
        {
            switch (i)
            {
                case 0: EventSource = strValue; return CfgUpdateFlags.AnyChange;
                case 1: iPerlHeadFailureRateThreshold = int.Parse(strValue); return CfgUpdateFlags.AnyChange;
                default: return CfgUpdateFlags.None;
            }
        }

        /// <summary>
        /// Validate string form of a parameter value
        /// </summary>
        /// <param name="i">Parameter index</param>
        /// <param name="strValue">String form of a parameter</param>
        /// <param name="message">Message in case value is not valid</param>
        /// <returns>true when string form of a parameter is OK</returns>
        public bool ValidateParam(int i, string strValue, out string message)
        {
            message = string.Empty;
            int percentage;

            switch (i)
            {
                case 0:
                    return true;
                case 1:
                    if (int.TryParse(strValue, out percentage) && (0 <= percentage) && (percentage <= 100)) return true;
                    message = "Threshold for iPERL head failure rate in % (0 = off)";
                    return false;
                default:
                    message = "Invalid index";
                    return false;
            }
        }

        void CopyContentTo(StatisticsCfg prms)
        {
            prms.EventSource = this.EventSource;                    /// 0
            prms.iPerlHeadFailureRateThreshold = this.iPerlHeadFailureRateThreshold;                  /// 1
        }

        public Config.Entities.IParamsProvider Clone()
        {
            StatisticsCfg pars = new StatisticsCfg();
            CopyContentTo(pars);
            return pars;
        }

        public bool UpdateEmbeddedDbEntity()
        {
            return true;    /// =OK, do nothing
        }
    }
}