using System;
using System.Collections.Generic;
using UnityEngine;



[Serializable]
public class SerializableDictionary<T1, T2> : Dictionary<T1, T2>, ISerializationCallbackReceiver
{
    [SerializeField] private List<T1> keys = new List<T1>();
    [SerializeField] private List<T2> values = new List<T2>();

    public void OnBeforeSerialize()
    {
        keys.Clear();
        values.Clear();

        foreach (KeyValuePair<T1, T2> pair in this)
        {
            keys.Add(pair.Key);
            values.Add(pair.Value);
        }
    }

    public void OnAfterDeserialize()
    {
        Clear();

        if (keys.Count != values.Count)
        {
            throw new Exception("there are " + keys.Count + " keys and " + values.Count + " values after deserialization. Make sure that both key and value types are serializable.");
        }

        for (int i = 0; i < keys.Count; ++i)
        {
            Add(keys[i], values[i]);
        }
    }
}