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

public class KVPair<Key, Value>
{
    public Key key;
    public Value value;

    public KVPair()
    {

    }

    public KVPair(Key key, Value value)
    {
        this.key = key;
        this.value = value;
    }
}

public static class DictionaryExtension
{
    public static bool IsAvailable<Key, Value>(this Dictionary<Key, Value> dictionary)
    {
        return dictionary != null && dictionary.Count > 0;
    }

    public static KVPair<Key, Value> GetAtIndex<Key, Value>(this Dictionary<Key, Value> dictionary, int index)
    {
        List<Key> keys = dictionary.Keys.ToList();
        List<Value> values = dictionary.Values.ToList();
        KVPair<Key, Value> kvPair = new KVPair<Key, Value>();
        kvPair.key = keys[index];
        kvPair.value = values[index];
        return kvPair;
    }

    public static int MyMin<Key, Value>(this Dictionary<Key, Value> dictionary, Func<Key, Value, float> func)
    {
        List<Key> keys = dictionary.Keys.ToList();
        List<Value> values = dictionary.Values.ToList();
        float min = func(keys[0], values[0]);
        int minIndex = 0;
        for (int i = 1; i < keys.Count; i++)
        {
            if (min > func(keys[i], values[i]))
            {
                min = func(keys[i], values[i]);
                minIndex = i;
            }
        }
        return minIndex;
    }

    public static int MyMax<Key, Value>(this Dictionary<Key, Value> dictionary, Func<Key, Value, float> func)
    {
        List<Key> keys = dictionary.Keys.ToList();
        List<Value> values = dictionary.Values.ToList();
        float max = func(keys[0], values[0]);
        int maxIndex = 0;
        for (int i = 1; i < keys.Count; i++)
        {
            if (max < func(keys[i], values[i]))
            {
                max = func(keys[i], values[i]);
                maxIndex = i;
            }
        }
        return maxIndex;
    }
}