using System.Xml;
namespace System.Net.HomeMatic {

    public enum SystemVariableType {
        Logic = 2,
        ValueList = 16,
        Numeric = 4,
        Alert = 6,
        String = 20,
        Unknown = 0
    }

    public class HMSystemVariable : HMBase {
        private object _variable;
        private object _value;
        private string _valueList;
        private int _min;
        private int _max;
        private string _unit;
        private SystemVariableType _type;
        private string _subType;
        private int _timeStamp;
        private string _valueName0;
        private string _valueName1;
        private string _valueText;
        private bool _logged;
        private bool _visible;

        protected override string GetClassName() {
            return "HMSystemVariable";
        }

        protected override string ValuesToString() {
            return this._variable.ToString() + ";" +
                this._value.ToString() + ";" +
                this._valueList + ";" +
                this._min.ToString() + ";" +
                this._max.ToString() + ";" +
                this._unit + ";" +
                this._type.ToString() + ";" +
                this._subType + ";" +
                this._timeStamp.ToString() + ";" +
                this._valueName0 + ";" +
                this._valueName1 + ";" +
                this._valueText + ";" +
                (this._logged?"true":"false") + ";" +
                (this._visible ? "true" : "false") + ";"
            ;
        }

        public string Name {
            get { return this._name; }
        }

        public object Variable {
            get { return this._variable; }
        }

        public object Value {
            //TODO: Nach Variablentype abfragen
            //TODO: Update wenn Timestamp älter ist
            get {
                if (this.UpdateRequired())
                    this.Update();
                return this._value;
            }
        }

        public string[] ValueList {
            get { return this._valueList.Split(';'); }
        }

        public int Min {
            get { return this._min; }
        }

        public int Max {
            get { return this._max; }
        }

        public string Unit {
            get { return this._unit; }
        }

        public SystemVariableType VarType {
            get { return this._type; }
        }

        public string SubType {
            get { return this._subType; }
        }

        public int TimeStamp {
            get { return this._timeStamp; }
        }

        public string ValueName0 {
            get { return this._valueName0; }
        }

        public string ValueName1 {
            get { return this._valueName1; }
        }

        public string ValueText {
            get { return this._valueText; }
        }

        public bool Logged {
            get { return this._logged; }
        }

        public bool Visible {
            get { return this._visible; }
        }



        public HMSystemVariable(HMApi Api) : base(Api) {

        }

        public HMSystemVariable(HMApi Api, XmlNode Data) : base(Api, Data) {
            this.Init(Data);
        }

        private void Init(XmlNode Data) {
            this._variable = this.Attr_Object(Data, "variable");
            this._value = this.Attr_Object(Data, "value");
            this._valueList = this.Attr_String(Data, "value_list");
            this._min = this.Attr_Int32(Data, "min");
            this._max = this.Attr_Int32(Data, "max");
            this._unit = this.Attr_String(Data, "unit");
            string _t = this.Attr_String(Data, "type");
            switch (_t) {
                case "2":
                    this._type = SystemVariableType.Logic;
                    break;
                case "4":
                    this._type = SystemVariableType.Numeric;
                    break;
                case "16":
                    this._type = SystemVariableType.ValueList;
                    break;
                case "6":
                    this._type = SystemVariableType.Alert;
                    break;
                case "20":
                    this._type = SystemVariableType.String;
                    break;
                default:
                    this._type = SystemVariableType.Unknown;
                    break;
            }
            this._subType = this.Attr_String(Data, "sub_type"); ;
            this._timeStamp = this.Attr_Int32(Data,"timestamp");
            this._valueName0 = this.Attr_String(Data, "value_name_0");
            this._valueName1 = this.Attr_String(Data, "value_name_1");
            this._valueText = this.Attr_String(Data, "value_text");
            this._logged = this.Attr_Bool(Data, "logged");
            this._visible = this.Attr_Bool(Data, "visible");
            this.lastUpdate = DateTime.Now;
        }

        private DateTime lastUpdate;
        private bool UpdateRequired() {
            return DateTime.Now.Ticks - this.lastUpdate.Ticks > 10000000;
        }

        public void Update() {
            XmlDocument doc = this._api.GetApiData(ApiMethode.SystemVariableList);
            XmlNodeList childs = doc.ChildNodes[1].ChildNodes;
            int c = childs.Count;
            if (c > 0) {
                for (int i = 0; i < c; i++) {
                    if (childs[i].Name == "systemVariable") {
                        string xname = this.Attr_String(childs[i], "name");
                        if(xname == this._name) {
                            this.Init(childs[i]);
                        }
                    }
                }
            }
        }

    }
}