using System.Collections.Generic;

namespace Superlazy
{
    internal abstract class SLValue : SLEntity
    {
        public override bool IsValue => true;
        protected string id;
        public override string ID => id;

        public override SLEntity Link()
        {
            SLLog.Error($"Value can't be link {id}: {GetString()}");
            return false;
        }

        public override SLEntity Override()
        {
            SLLog.Error($"Value can't be override {id}: {GetString()}");
            return false;
        }

        internal override bool IsExist()
        {
            return true;
        }

        public override bool HasChild(string attributeKey)
        {
            if (attributeKey == "ID") return true;

            SLLog.Error($"Can't get Child in Value {id}: {GetObj()}");
            return false;
        }

        public override IEnumerator<SLEntity> GetEnumerator()
        {
            SLLog.Error($"Can't get Enumerator in Value {id}: {GetObj()}");
            yield break;
        }

        public override SLEntity this[string attributeKey]
        {
            get
            {
                if (attributeKey == "ID") return ID;

                SLLog.Error($"Can't get attribute in Value {id}: {GetObj()}");
                return false;
            }

            set => SLLog.Error($"Can't set attribute in Value : {GetObj()}");
        }

        internal override SLEntity ToChild(SLContainerBase parent, string id)
        {
            if (this.id != null)
            {
                return Clone().ToChild(parent, id);
            }

            this.id = id;
            return this;
        }

        internal override void Move(SLEntity parent, string id)
        {
            this.id = id;
            parent[id] = this;
        }

        //public override SLEntity Clone()
        //{
        //    return this;
        //}

        public override bool IsModified(string child)
        {
            return false;
        }

        public override void EndModified()
        {
        }
    }

    internal class SLValueDouble : SLValue
    {
        private readonly double value;

        public SLValueDouble(double value)
        {
            this.value = value;
        }

        public override bool IsNumeric => true;

        internal override double GetDouble()
        {
            return value;
        }

        internal override int GetInt()
        {
            return (int)value;
        }

        internal override object GetObj()
        {
            return value;
        }

        protected override int GetEntityHashCode()
        {
            return value.GetHashCode();
        }

        internal override string GetString()
        {
            return value.ToString();
        }

        public override SLEntity Clone()
        {
            return new SLValueDouble(value);
        }
    }

    internal class SLValueInt : SLValue
    {
        private readonly int value;

        public SLValueInt(int value)
        {
            this.value = value;
        }

        public override bool IsNumeric => true;

        internal override double GetDouble()
        {
            return value;
        }

        internal override int GetInt()
        {
            return value;
        }

        internal override object GetObj()
        {
            return value;
        }

        protected override int GetEntityHashCode()
        {
            return value.GetHashCode();
        }

        internal override string GetString()
        {
            return value.ToString();
        }

        public override SLEntity Clone()
        {
            return new SLValueInt(value);
        }
    }

    internal class SLValueString : SLValue
    {
        private readonly string value;

        public SLValueString(string value)
        {
            this.value = value;
        }

        public override bool IsNumeric => false;

        internal override double GetDouble()
        {
            SLLog.Warn($"String is not number {ID}:{GetString()}");
            return 0;
        }

        internal override int GetInt()
        {
            SLLog.Warn($"String is not number {ID}:{GetString()}");
            return 0;
        }

        internal override object GetObj()
        {
            return value;
        }

        protected override int GetEntityHashCode()
        {
            return value.GetHashCode();
        }

        internal override string GetString()
        {
            return value;
        }

        public override SLEntity Clone()
        {
            return new SLValueString(value);
        }
    }
}