using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;

namespace MCTGLib
{

    public class RecipeCollection : IList<Recipe>, IEquatable<RecipeCollection>
    {
        #region Attributes
        private List<Recipe> _recipes;
        #endregion

        #region Properties
        public string Description { get; set; }

        #region IList Prperties
        public int Count => _recipes.Count;
        public bool IsReadOnly => false;
        public Recipe this[int index] { get => _recipes[index]; set => _recipes[index] = value; }
        #endregion
        #endregion

        #region Constructors
        public RecipeCollection(string description = "No Description.")
        {
            _recipes = new List<Recipe>();
            Description = description;
        }

        public RecipeCollection(params Recipe[] recipes)
        {
            _recipes = new List<Recipe>(recipes);
            Description = "No Description.";
        }
        #endregion

        #region Methods
        #region IList Methods
        public int IndexOf(Recipe item)
        {
            return _recipes.IndexOf(item);
        }

        public void Insert(int index, Recipe item)
        {
            _recipes.Insert(index, item);
        }

        public void RemoveAt(int index)
        {
            _recipes.RemoveAt(index);
        }

        public void Add(Recipe item)
        {
            _recipes.Add(item);
        }

        public void Clear()
        {
            _recipes.Clear();
        }

        public bool Contains(Recipe item)
        {
            return _recipes.Contains(item);
        }

        public void CopyTo(Recipe[] array, int arrayIndex)
        {
            _recipes.CopyTo(array, arrayIndex);
        }

        public bool Remove(Recipe item)
        {
            return _recipes.Remove(item);
        }

        public IEnumerator<Recipe> GetEnumerator()
        {
            return _recipes.GetEnumerator();
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return _recipes.GetEnumerator();
        }
        #endregion

        #region IEquatable Mathods
        public bool Equals(RecipeCollection? other)
        {
            if (other == null) return false;
            if (other == this) return true;
            return Description.Equals(other.Description) && _recipes.Equals(other._recipes);
        }
        #endregion

        public override int GetHashCode()
        {
            return Description.GetHashCode() + _recipes.GetHashCode();
        }
        #endregion
    }
}