using System;
using System.Text;
using System.Collections.Generic;
using System.Reflection;
using System.Linq;
using System.Security.Cryptography;
using ln.types.btree;
using ln.json.mapping;

namespace ln.json
{
	public class JSONObject : JSONValue
	{
        public IEnumerable<string> Keys => values.Keys;

        public override IEnumerable<JSONValue> Children => values.Values;
        public override bool HasChildren => true;

        public int Count => values.Count;

        BTree<string, JSONValue> values = new BTree<string, JSONValue>();

		public JSONObject()
			:base(JSONValueType.OBJECT){}

        public override JSONValue this[string property]
        {
            get => values[property];
            set => values[property] = value;
        }

        public JSONObject Add(string propertyName, JSONValue value)
        {
            values[propertyName] = value;
            return this;
        }
        public JSONObject Add(string propertyName, object value)
        {
            values[propertyName] = JSONMapper.DefaultMapper.ToJson(value);
            return this;
        }

        public bool ContainsKey(string key)
        {
            return values.ContainsKey(key);
        }

        public T ToObject<T>()
        {
            return JSONMapper.DefaultMapper.FromJson<T>(this);
        }

        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append('{');

            IEnumerator<string> kenum = values.Keys.GetEnumerator();
            if (kenum.MoveNext())
                do
                {
                    sb.Append('"');
                    sb.Append(kenum.Current);
                    sb.Append('"');
                    sb.Append(':');
                    if (values[kenum.Current]!=null)
                        sb.Append(values[kenum.Current].ToString());
                    else
                        sb.Append("null");

                    if (!kenum.MoveNext())
                        break;
                    sb.Append(',');
                } while (true);

            sb.Append('}');
            return sb.ToString();
        }

        public static JSONObject From(object value)
        {
            return (JSONObject)JSONMapper.DefaultMapper.ToJson(value);
        }

    }


}