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

public class QuestGiver : MonoBehaviour
{
    [SerializeField] private TextAsset questFile;
    [SerializeField] private InventoryItem reward;
    [SerializeField] private InventoryItem requiredItem;
    [SerializeField] private DeleteTreeReward rewardFunction;
    public bool isActive;
    public bool isCompleted;

    public QuestData quest;


    // Start is called once before the first execution of Update after the MonoBehaviour is created
    private void Awake()
    {
        if (questFile == null)
        {
            Debug.LogError("Quest file is not assigned in the inspector.");
            return;
        }

        // Load the quest data from the TextAsset
        try
        {
            quest = JsonUtility.FromJson<QuestData>(questFile.text);
        }
        catch (Exception e)
        {
            Debug.LogError("Failed to parse quest data: " + e.Message);
        }
    }

    private void Start()
    {
    }

    // Update is called once per frame
    private void Update()
    {
    }

    public QuestData GetCurrentQuest()
    {
        return quest;
    }

    public void CheckInventory(List<InventoryItem> inventory)
    {
        // Check if the required item is in the player's inventory
        if (inventory.Contains(requiredItem))
        {
            isCompleted = true; // Mark the quest as completed
            FinishQuest();
        }
        else
        {
            isCompleted = false; // Mark the quest as not completed
        }
    }

    public Dialog[] Talk()
    {
        Debug.Log("Talking to quest giver: " + quest.id);
        if (!isActive && isCompleted)
            // If the quest is completed, return the repetition dialog
            return quest.repetition;

        if (!isActive)
        {
            // Initialize the quest
            isActive = true;
            return quest.initial;
        }

        if (isActive && isCompleted)
        {
            isActive = false; // reset the quest
            isCompleted = true;
            // take the Requireditem from the player inventory

            // If the quest is active and completed, return the success dialog
            return quest.success;
        }

        // If the quest is active but not completed, return the reminder dialog
        CheckInventory(GameObject.FindGameObjectsWithTag("Player")[0].GetComponent<PlayerInteraction>()
            .GetInventoryItems());
        return quest.reminder;
    }

    public Dialog[] FinishQuest()
    {
        // If the quest is active and completed, return the success dialog
        isActive = false;
        isCompleted = true;
        GameObject.Find("Player").GetComponent<PlayerInteraction>().RemoveFromInventory(requiredItem);

        reward.giveReward(GameObject.Find("Player")); // Give the reward to the player
        rewardFunction.RewardPlayer();
        if (rewardFunction != null) rewardFunction.RewardPlayer();
        return quest.success;
    }
}