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

namespace SpellBoundAR.Items.Inventories
{
    [CreateAssetMenu(menuName = "Scriptable Objects/Gameplay/Items/Saved Inventory")]
    public class SavedInventoryScriptableObject : ScriptableObject, IInventory
    {
        public event Action OnEntriesChanged;
        public void InvokeOnEntriesChanged() => OnEntriesChanged?.Invoke();
        
        [SerializeField] protected string id;
        [SerializeField] protected string directory = string.Empty;

        [Header("Cache")]
        private SavedInventory _savedInventory;

        protected virtual string Directory => directory;

        public SavedInventory SavedInventory { get; private set; }

        protected virtual void OnEnable()
        {
            SavedInventory ??= new SavedInventory(Directory, id);
            if (SavedInventory != null) SavedInventory.OnEntriesChanged += InvokeOnEntriesChanged;
        }

        protected virtual void OnDisable()
        {
            if (SavedInventory != null) SavedInventory.OnEntriesChanged -= InvokeOnEntriesChanged;
        }

        protected virtual void OnValidate()
        {
            if (SavedInventory != null) SavedInventory.Directory = Directory;
            else SavedInventory = new SavedInventory(Directory, id);
        }
        
        public virtual string ID => SavedInventory.ID;
        public virtual List<IInventoryEntry> GetAllEntries() => SavedInventory.GetAllEntries();
        public virtual IInventoryEntry GetEntry(IItemTypeData itemTypeData) => SavedInventory.GetEntry(itemTypeData);
        public virtual void Add(IItemTypeData itemTypeData, int quantity) => SavedInventory.Add(itemTypeData, quantity);
        public virtual void Remove(IItemTypeData itemTypeData, int quantity) => SavedInventory.Remove(itemTypeData, quantity);
        public virtual void RemoveAll(IItemTypeData itemTypeData) => SavedInventory.RemoveAll(itemTypeData);
        public virtual void Clear() => SavedInventory.Clear();
    }
}