using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using Assets.HeroEditor4D.InventorySystem.Scripts.Data;
using Assets.HeroEditor4D.InventorySystem.Scripts.Elements;
using UnityEngine;

public class InventoryManager : MonoBehaviour
{
    public playerNetwork pnet;
    public InventorySlot[] inventorySlots;
    public InventoryItemsCollection lootsData;
    public GameObject ItemInventoryPrefab;

    public List<item> startingItems;
    public bool resetInventory = false;
    private void OnValidate()
    {
        if (resetInventory)
        {
            resetInventory= false;

            foreach(InventorySlot slot in inventorySlots)
            {
                slot.Clear();
            }
        }
    }

    public item GetItemByType(string type)
    {
        foreach(item i in lootsData.items)
        {
            if(i.type == type)
            {
                return i;
            }
        }
        Debug.Log("Could not find anything for " + type);  
        return null;
    }


    void Start(){
        foreach(item i in startingItems){
            AddInvItem(i);
        }
    }

    public Dictionary<int, string> GetEntries(){
        Dictionary<int, string> entries = new Dictionary<int, string>();
        for(int i=0; i < inventorySlots.Length; i++){
            ItemInventory itemInSlot = inventorySlots[i].GetComponentInChildren<ItemInventory>();
            if(itemInSlot!= null && itemInSlot.item != null){
                entries.Add(i, itemInSlot.item.type);
            }
        }
        return entries;
    }

    public void SetInventory(Dictionary<int, string> data)
    {
        Clear();

        foreach(KeyValuePair<int, string> entry in data)
        {
            SpawnNewItem(GetItemByType(entry.Value), inventorySlots[entry.Key]);
        }
    }

    public bool UseItem(item i)
    {
        if(pnet.health >= 100)
        {
            return false;
        }

        pnet.SetHealth(pnet.health+i.healthIncrease);
        pnet.SavePlayerData();

        return true;
    }

    public item selectedItem;

    public void SelectItem(item itemI){
        selectedItem = itemI;
    }

    public void DropItem(item i)
    {
        pnet.DropPickup(i.type);
        pnet.SavePlayerData();

    }

    public void AddInvItem(string type)
    {
        AddInvItem(GetItemByType(type));
    }

    public void AddInvItem (item item){
        //find an empty slot
        for(int i = inventorySlots.Length-1; i >=0 ; i--){
            InventorySlot slot = inventorySlots[i];
            ItemInventory itemInSlot = slot.GetComponentInChildren<ItemInventory>();

            if(itemInSlot == null){
                SpawnNewItem(item , slot);
                return;
            }
            //implement check for slot full 
        }

        Debug.Log("Slots are full");
    }

    public void Clear(){
        for(int i=0; i < inventorySlots.Length; i++){
            if(inventorySlots[i].transform.childCount > 0){
                Destroy(inventorySlots[i].transform.GetChild(0).gameObject);
            }
        }
    }

    void SpawnNewItem(item item , InventorySlot slot ){
        GameObject newItemAdd = Instantiate(ItemInventoryPrefab , slot.transform);
        
        ItemInventory inventoryItemm = newItemAdd.GetComponent<ItemInventory>();
        inventoryItemm.Set(item,this);

        pnet.SavePlayerData();

    }


} 


[System.Serializable]
public class InventoryEntry{
    public int slot;
    public string item;
}