using Kryz.CharacterStats.Examples;
using Photon.Pun;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DropTable : MonoBehaviour
{
    [SerializeField] private GameObject interactableDropPrefab;
    [SerializeField] private GameObject interactableDropAbilityTomePagePrefab;
    [SerializeField] private GameObject coinPrefab;
    [SerializeField] private int coinAmount;
    [SerializeField] private int extraDropChance;

    [SerializeField] private GameEvent_Int onCoinDrop;

    public List<EquippableItem> guaranteedItemDrop = new List<EquippableItem>();
    [Header("Only one of the following list is guaranteed to drop.")]
    public List<WeightedDrop> guaranteedOnlyOnePerKill = new List<WeightedDrop>();
    public List<EquippableItem> extraDrops = new List<EquippableItem>();
    public List<Item> nonEquippablesDrops = new List<Item>();

    [Space]

    [SerializeField] private List<WeightedDrop> weightedDropLootTable = new List<WeightedDrop>();

    PhotonView photonView;
    GameObject instantiatedDrop;
    GameObject instantiatedEquippableDrop;
    EquippableItemDrop equippableItemDrop;
    EquippableItemDrop itemDrop;
    Item possibleItem;
    GameObject instantiatedCoinDrop;
    CoinDrop coinDrop;
    int finalCoinAmount;

    Vector3 spawnPosition;

    private void Awake()
    {
        photonView = GetComponentInParent<PhotonView>();
    }

    // Start is called before the first frame update
    void Start()
    {

    }

    public bool CalculateLootDrop()
    {
        return Random.Range(0, 100) < (extraDropChance * (1 + GameConstants.GameBalancing.IncreasedItemDropBasedOnDifficultyMultiplier * GameDifficultyController.Instance.GetCurrentDifficultyLevel()));
    }

    public void DropLoot(bool lootDrop)
    {
        spawnPosition = this.transform.position;
        spawnPosition.y = 0f;

        instantiatedCoinDrop = Instantiate(coinPrefab, spawnPosition, this.transform.rotation);
        coinDrop = instantiatedCoinDrop.GetComponent<CoinDrop>();

        finalCoinAmount = Mathf.RoundToInt(coinAmount * (1 + GameConstants.GameBalancing.IncreasedCoinDropBasedOnDifficultyMultiplier * GameDifficultyController.Instance.GetCurrentDifficultyLevel()));

        coinDrop.Init(finalCoinAmount);

        onCoinDrop.Raise(finalCoinAmount);

        for (int i = 0; i < guaranteedItemDrop.Count; i++)
        {
            instantiatedDrop = Instantiate(interactableDropPrefab, spawnPosition, this.transform.rotation);
            itemDrop = instantiatedDrop.GetComponent<EquippableItemDrop>();
            itemDrop.itemDrop = Item.ConvertTemplateIntoInstance(guaranteedItemDrop[i]);
        }

        if (guaranteedOnlyOnePerKill.Count > 0 && WeightedDrop.HaveDropsForDifficulty(weightedDropLootTable, GameDifficultyController.Instance.GetCurrentDifficultyLevel()))
        {
            possibleItem = WeightedDrop.GetRandomDrop(guaranteedOnlyOnePerKill, GameDifficultyController.Instance.GetCurrentDifficultyLevel());
            spawnPosition = guaranteedItemDrop.Count > 0 ? this.transform.position + Vector3.one * 0.3f : this.transform.position;
            spawnPosition.y = 0f;
            instantiatedDrop = Instantiate(interactableDropPrefab, spawnPosition, this.transform.rotation);
            itemDrop = instantiatedDrop.GetComponent<EquippableItemDrop>();
            itemDrop.itemDrop = Item.ConvertTemplateIntoInstance(possibleItem);
        }
        else
        {
            if(Random.Range(0,100) > 49)
            {
                spawnPosition = this.transform.position - Vector3.one * 0.3f;
                spawnPosition.y = 0f;
                instantiatedDrop = Instantiate(interactableDropAbilityTomePagePrefab, spawnPosition, this.transform.rotation);
                itemDrop = instantiatedDrop.GetComponent<EquippableItemDrop>();
                itemDrop.itemDrop = BuildLibrary.Instance.GetRandomLockedAbilityTomePageInstance();
            }
        }

        if (!lootDrop) return;


        if (weightedDropLootTable.Count <= 0) return;

        if (!WeightedDrop.HaveDropsForDifficulty(weightedDropLootTable, GameDifficultyController.Instance.GetCurrentDifficultyLevel())) return;

        possibleItem = WeightedDrop.GetRandomDrop(weightedDropLootTable, GameDifficultyController.Instance.GetCurrentDifficultyLevel());
        if (possibleItem == null) return;

        spawnPosition = this.transform.position;
        if (guaranteedItemDrop.Count > 0)
        {
            spawnPosition += Vector3.one * 0.15f;
        }
        if(guaranteedOnlyOnePerKill.Count > 0)
        {
            spawnPosition += Vector3.one * 0.15f;
        }
        spawnPosition.y = 0f;
        instantiatedDrop = Instantiate(interactableDropPrefab, spawnPosition, this.transform.rotation);
        itemDrop = instantiatedDrop.GetComponent<EquippableItemDrop>();
        itemDrop.itemDrop = Item.ConvertTemplateIntoInstance(possibleItem);
    }
}