using OpenTap.Addin.Entity;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Dynamic;

namespace OpenTap.Addin
{
    public class VariableConte : DynamicObject
    {
        private static readonly char SPLIT_MARK = '.';

        private readonly ConcurrentDictionary<string, RuntimeVariable> _____Variables_____;


        private readonly string _____name_____;

        public VariableConte(string name, ConcurrentDictionary<string, RuntimeVariable> variables)
        {
            _____name_____ = name;
            _____Variables_____ = variables;
        }

        public override bool TryGetMember(GetMemberBinder binder, out dynamic result)
        {
            result = null;
            string name = binder.Name;
            var type = binder.ReturnType;

            if (_____Variables_____.TryGetValue(name, out var variable))
            {
                if (type == typeof(RuntimeVariable))
                {
                    result = variable;
                }
                else
                {
                    result = variable;//.data;
                }
                return true;
            }
            result = new NullVariable($"{this._____name_____}.{name}");
            return true;
        }

        public override bool TrySetMember(SetMemberBinder binder, object value)
        {
            string name = binder.Name;
            if (_____Variables_____.TryGetValue(name, out var variable))
            {
                if (value is RuntimeVariable rv)
                {
                    // 引用传递
                    _____Variables_____[name] = rv;
                }
                else
                {
                    variable.__data___ = NumberData.Format(value);
                }
                return true;
            }
            else
            {
                if (value is RuntimeVariable rv)
                {
                    // 引用传递
                    _____Variables_____[name] = rv;
                }
                else
                {
                    var v = new RuntimeVariable(null, name, NumberData.Format(value));
                    _____Variables_____[name] = v;
                }
                
                return true;
            }
        }

        public void Merge(VariableConte source)
        {
            if (source?._____Variables_____ != null)
            {
                foreach (var key in source._____Variables_____.Keys)
                {
                    _____Variables_____[key] = source._____Variables_____[key];
                }
            }
        }

        public void Merge(ConcurrentDictionary<string, RuntimeVariable> Variables)
        {
            if (Variables != null)
            {
                foreach (var key in Variables.Keys)
                {
                    this._____Variables_____[key] = Variables[key];
                }
            }
        }

        public static VariableConte FromTestVariables(string name, IEnumerable<TestVariable> variables)
        {
            var runtimeVariablePool = new ConcurrentDictionary<string, RuntimeVariable>();
            foreach (var data in variables)
            {
                RuntimeVariable runTime = data.ToRuntime(null);
                if (runTime is null) continue;
                runtimeVariablePool[runTime.__name___] = runTime;
            }
            return new VariableConte(name, runtimeVariablePool);
        }
    }
}