using System.Collections.Generic;
using Robust.Client.GameObjects;
using Robust.Client.Graphics;
using Robust.Client.ResourceManagement;
using Robust.Client.UserInterface.Controls;
using Robust.Client.UserInterface.CustomControls;
using Robust.Shared.IoC;
using Robust.Shared.Prototypes;
using static Content.Shared.VendingMachines.SharedVendingMachineComponent;

namespace Content.Client.VendingMachines.UI
{
    class VendingMachineMenu : SS14Window
    {
        [Dependency] private readonly IResourceCache _resourceCache = default!;
        [Dependency] private readonly IPrototypeManager _prototypeManager = default!;

        private readonly ItemList _items;
        private List<VendingMachineInventoryEntry> _cachedInventory = new();

        public VendingMachineBoundUserInterface Owner { get; }

        public VendingMachineMenu(VendingMachineBoundUserInterface owner)
        {
            SetSize = (300, 450);
            IoCManager.InjectDependencies(this);

            Owner = owner;

            _items = new ItemList()
            {
                SizeFlagsStretchRatio = 8,
                VerticalExpand = true,
            };
            _items.OnItemSelected += ItemSelected;

            Contents.AddChild(_items);
        }

        public void Populate(List<VendingMachineInventoryEntry> inventory)
        {
            _items.Clear();
            _cachedInventory = inventory;
            var longestEntry = "";
            foreach (VendingMachineInventoryEntry entry in inventory)
            {
                var itemName = _prototypeManager.Index<EntityPrototype>(entry.ID).Name;
                if (itemName.Length > longestEntry.Length)
                {
                    longestEntry = itemName;
                }

                Texture? icon = null;
                if(_prototypeManager.TryIndex(entry.ID, out EntityPrototype? prototype))
                {
                    icon = SpriteComponent.GetPrototypeIcon(prototype, _resourceCache).Default;
                }

                _items.AddItem($"{itemName} ({entry.Amount} left)", icon);
            }

            SetSize = ((longestEntry.Length + 8) * 12, _items.Count * 40 + 50);
        }

        public void ItemSelected(ItemList.ItemListSelectedEventArgs args)
        {
            Owner.Eject(_cachedInventory[args.ItemIndex].ID);
        }
    }
}