using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
/// <summary>
/// This component searches all children for a bunch of other components such as names, descriptions, stats, etc
/// and updates them with all necessary information whenever it is updated.
/// It is assumed that children of a view info panel never get destroyed separately, as it is treated as one object.
/// Similarly, it is assumed that all children already exist at the time of startup.
/// </summary>
public class ViewItemInfoPanel : MonoBehaviour
{
    private List<ItemNameDisplay> names;
    private List<ItemStatsDisplay> stats;
    private List<ItemTypeDisplay> types;
    private List<ItemPriceDisplay> prices;
    private List<ItemDescriptionDisplay> descr;
    private List<ItemClassDisplay> rarity;
    private List<ItemIconDisplay> icons;

    private Item lastItem;  // Should we want to refresh for whatever reason
    private ShopModel lastShop;
    private void Awake()
    {
        UpdateComponentInfo();
    }

    private void UpdateComponentInfo()
    {
        names = GetComponentsInChildren<ItemNameDisplay>().ToList();
        Debug.Assert(names != null,this);
        stats = GetComponentsInChildren<ItemStatsDisplay>().ToList();
        types = GetComponentsInChildren<ItemTypeDisplay>().ToList();
        prices = GetComponentsInChildren<ItemPriceDisplay>().ToList();
        descr = GetComponentsInChildren<ItemDescriptionDisplay>().ToList();
        rarity = GetComponentsInChildren<ItemClassDisplay>().ToList();
        icons = GetComponentsInChildren<ItemIconDisplay>().ToList();
        //if (names == null) names = ;
        // TODO: Create and add all other types in here as components!
    }

    public void Refresh()
    {
        SetItemInfo(lastItem,lastShop);
    }

    // When this is set, it updates all relevant game objects to reflect the item's propertiese.
    public void SetItemInfo(Item item,ShopModel owner = null)
    {
        lastShop = owner;
        lastItem = item;
        var multiplier = owner?.PriceModifier ?? 1;
        if (item == null)
        {
            gameObject.SetActive(false);    // If the seelcted item doesn't exist, disable the whole panel
            return;
        }
        if(names == null) UpdateComponentInfo();    // Assume that if the names component is null, we probably never initialised
        //gameObject.SetActive(true);
        foreach (var name in names)
        {
            name.SetName(item.name);
        }

        foreach (var itemStatsDisplay in stats)
        {
            itemStatsDisplay.SetStats(item.GetStats());
        }

        foreach (var type in types)
        {
            type.SetType(item.GetItemType().ToString());
        }

        foreach (var price in prices)
        {
            var cost = owner?.GetPriceForItem(item);
            price.SetPrice(cost ?? (int) (item.basePrice * multiplier));    // If the shop has any special pricing, show that here
        }

        foreach (var descriptionDisplay in descr)
        {
            descriptionDisplay.SetDescription(item.description);
        }

        foreach (var itemClass in rarity)
        {
            itemClass.SetClass(item.rarity);
        }

        foreach (var icon in icons)
        {
            icon.SetIcon(item.iconName);
        }
    }
}