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

namespace BitStrap.Examples
{
	public class DictionaryExtensionsExample : MonoBehaviour
	{
		[Serializable]
		public struct Pair
		{
			public string key;

			public int value;
		}

		[Header("Edit the fields and click the buttons to test them!")]
		public Pair[] dictionary = new Pair[4]
		{
			new Pair
			{
				key = "element0",
				value = 0
			},
			new Pair
			{
				key = "element1",
				value = 1
			},
			new Pair
			{
				key = "element2",
				value = 2
			},
			new Pair
			{
				key = "element3",
				value = 3
			}
		};

		private Dictionary<string, int> actualDictionary = new Dictionary<string, int>();

		[Button]
		public void ForEachIterationWithNoGarbage()
		{
			BuildDictionary();
			DictionaryExtensions.GCFreeEnumerator<string, int> enumerator = actualDictionary.Each().GetEnumerator();
			while (enumerator.MoveNext())
			{
				KeyValuePair<string, int> current = enumerator.Current;
				Debug.LogFormat("This is an iteration. Key = {0}, Value = {1}", current.Key, current.Value);
			}
		}

		[Button]
		public void ElementZeroCount()
		{
			BuildDictionary();
			Debug.LogFormat("There are {0} zeros values in the dictionary.", actualDictionary.Count((KeyValuePair<string, int> e) => e.Value == 0));
		}

		[Button]
		public void AreAllZeros()
		{
			BuildDictionary();
			Debug.LogFormat("Are all values in dictionary zero? {0}.", actualDictionary.All((KeyValuePair<string, int> e) => e.Value == 0));
		}

		[Button]
		public void IsThereAnyZeros()
		{
			BuildDictionary();
			Debug.LogFormat("Is there any zero element value in dictionary? {0}.", actualDictionary.Any((KeyValuePair<string, int> e) => e.Value == 0));
		}

		[Button]
		public void GetFirstElementOrDefaultValue()
		{
			BuildDictionary();
			Debug.LogFormat("First element value or default value is {0}.", actualDictionary.FirstOrDefault().Value);
		}

		[Button]
		public void PrettyPrintDictionary()
		{
			BuildDictionary();
			Debug.Log(actualDictionary.ToStringFull());
		}

		private void BuildDictionary()
		{
			actualDictionary.Clear();
			Pair[] array = dictionary;
			for (int i = 0; i < array.Length; i++)
			{
				Pair pair = array[i];
				actualDictionary.Add(pair.key, pair.value);
			}
		}
	}
}