using UnityEngine;
using UnityEngine.UI;

namespace Kryz.CharacterStats.Examples
{
    public class StatPanel : MonoBehaviour
    {
        [SerializeField] private Transform statDisplaysParent;
        [SerializeField] StatDisplay[] statDisplays;
        [SerializeField] private StatDisplay[] secondaryStatDisplays;
        [SerializeField] string[] statNames;
        [SerializeField] Button[] addStatButtons;
        [SerializeField] private string[] secondaryStatNames;
        [SerializeField] private Text characterName;
        [SerializeField] private Text characterLevel;
        [SerializeField] private Text characterRepLevel;
        [SerializeField] private StatDisplay unallocated;
        [SerializeField] private Button resetAllocated;
        private CharacterStat[] stats;
        private CharacterStat[] secondaryStats;
        private PlayerCharacterStats playerStats;

        private bool InitializedListeners = false;

        private void OnValidate()
        {
            if (statDisplaysParent != null)
            {
                statDisplays = statDisplaysParent.GetComponentsInChildren<StatDisplay>();

                UpdateStatNames();
                UpdateSecondaryStatNames();
            }
        }

        public void SetPlayerStats(PlayerCharacterStats playerStats)
        {
            this.playerStats = playerStats;
        }

        public void SetStats(params CharacterStat[] charStats)
        {
            stats = charStats;

            if (stats.Length > statDisplays.Length)
            {
                Debug.LogError("Not Enough Stat Displays!");
                return;
            }

            for (int i = 0; i < statDisplays.Length; i++)
            {
                statDisplays[i].Stat = i < stats.Length ? stats[i] : null;
                statDisplays[i].gameObject.SetActive(i < stats.Length);
            }

            unallocated.ValueText.text = playerStats.AvailablePointsToAllocate.ToString();
            unallocated.gameObject.SetActive(playerStats.AvailablePointsToAllocate > 0);

            if (InitializedListeners) return;

            InitializedListeners = true;
            addStatButtons[0].onClick.AddListener(() => AllocateStat(0));
            addStatButtons[1].onClick.AddListener(() => AllocateStat(1));
            addStatButtons[2].onClick.AddListener(() => AllocateStat(2));
            addStatButtons[3].onClick.AddListener(() => AllocateStat(3));
            addStatButtons[4].onClick.AddListener(() => AllocateStat(4));
            resetAllocated.onClick.AddListener(ResetAllocatedStats);
        }
        public void SetSecondaryStats(params CharacterStat[] secondaryStats)
        {
            this.secondaryStats = secondaryStats;

            if (secondaryStats.Length > secondaryStatDisplays.Length)
            {
                Debug.LogError("Not Enough Stat Displays!");
                return;
            }

            for (int i = 0; i < secondaryStatDisplays.Length; i++)
            {
                secondaryStatDisplays[i].Stat = secondaryStats[i];
            }
        }

        int pointsToAllocate;
        public void AllocateStat(int index)
        {
            if (playerStats.AvailablePointsToAllocate <= 0) return;

            // Determine points to allocate based on shift key
            pointsToAllocate = Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift) ? 10 : 1;
            pointsToAllocate = Mathf.Min(pointsToAllocate, playerStats.AvailablePointsToAllocate);

            playerStats.AllocatedStatPoints[index] += pointsToAllocate;
            playerStats.AvailablePointsToAllocate -= pointsToAllocate;
            playerStats.UpdateAllocatedStats();

            ToggleAllocateButtonsInteractable(playerStats.AvailablePointsToAllocate > 0);
        }
        
        public void ResetAllocatedStats()
        {
            for (int i = 0; i < playerStats.AllocatedStatPoints.Count; i++)
            {
                playerStats.AvailablePointsToAllocate += playerStats.AllocatedStatPoints[i];
                playerStats.AllocatedStatPoints[i] = 0;
            }

            playerStats.UpdateAllocatedStats();

            ToggleAllocateButtonsInteractable(playerStats.AvailablePointsToAllocate > 0);
        }
        public void SetCharacterInfo(string name, string level, string repLevel)
        {
            characterName.text = name;
            characterLevel.text = level;
            characterRepLevel.text = repLevel;
        }
        public void UpdateLevelInfo(string level, string repLevel)
        {
            characterLevel.text = level;
            characterRepLevel.text = repLevel;
        }

        public void UpdateStatValues()
        {
            for (int i = 0; i < stats.Length; i++)
            {
                statDisplays[i].ValueText.text = stats[i].Value.ToString();
            }

            UpdateSecondaryStatValues();
        }

        public void UpdateStatNames()
        {
            for (int i = 0; i < statNames.Length; i++)
            {
                statDisplays[i].NameText.text = statNames[i];
            }
        }
        public void UpdateSecondaryStatNames()
        {
            for (int i = 0; i < secondaryStatNames.Length; i++)
            {
                secondaryStatDisplays[i].NameText.text = secondaryStatNames[i];
            }
        }
        public void UpdateSecondaryStatValues()
        {
            for (int i = 0; i < secondaryStats.Length; i++)
            {
                secondaryStatDisplays[i].ValueText.text = secondaryStatDisplays[i].NameText.text.Contains("crit") ? secondaryStats[i].Value.ToString() + " %" : secondaryStats[i].Value.ToString();
            }
        }

        public void ToggleAllocateButtonsInteractable(bool interactable)
        {
            unallocated.ValueText.text = playerStats.AvailablePointsToAllocate.ToString();
            unallocated.gameObject.SetActive(playerStats.AvailablePointsToAllocate > 0);

            for (int i = 0; i < addStatButtons.Length; i++)
            {
                addStatButtons[i].gameObject.SetActive(interactable);
            }
        }
    }
}