using UnityEngine;
using System;
using System.Collections.Generic;
using Unity.VisualScripting;
using DG.Tweening;

public class ClawScoreManager : MonoBehaviour
{
    public static ClawScoreManager Instance;
    public event Action<int> OnScoreChanged;   // passes TOTAL score
    public int CurrentScore => score;

    [Header("Scoring")]
    public int wolfPoints = 100;
    public int goldenWolfJackpot = 1000;
    public int starPoints = 50;
    public int comboBonus = 300;
    public int starSuperBonus = 500;

    [Header("Multipliers")]
    public float crystalNextGrabMultiplier = 2f;
    private bool crystalPrimed = false;

    [Header("Timers & Effects")]
    public float addTimeSeconds = 5f;        // Sand Dial
    public float slowDuration = 5f;          // Clock
    public float turboDuration = 5f;         // Turbo
    public float freezeDuration = 2f;        // Freeze
    public float bombDisableSeconds = 3f;    // Bomb
    public float shockJamSeconds = 2f;       // Shock

    // Events others can subscribe to
    public event Action<int> OnScoreAdded;
    public event Action<float> OnTimeAdded;
    public event Action<float> OnPlatformSlow;     // pass duration
    public event Action<float> OnPlatformTurbo;    // pass duration
    public event Action<float> OnPlatformFreeze;   // pass duration
    public event Action<float> OnClawDisabled;     // pass duration
    public event Action<float> OnClawJam;          // pass duration
    public event Action<ClawBubbleType[]> OnComboAchieved;

    private int score = 0;

    // NEW: per-type collected counts
    private readonly Dictionary<ClawBubbleType, int> collectedCounts = new Dictionary<ClawBubbleType, int>();
    public IReadOnlyDictionary<ClawBubbleType, int> CollectedCounts => collectedCounts;
    public int GetCount(ClawBubbleType t) => collectedCounts.TryGetValue(t, out var c) ? c : 0;

    private readonly Queue<ClawBubbleType> comboQueue = new Queue<ClawBubbleType>();
    private readonly Queue<ClawBubbleType> starQueue = new Queue<ClawBubbleType>();
    public GameObject ScoreUIObj;
    public Transform canvasTransform;
    void Awake()
    {
        Instance = this;

        // init counts for all enum values
        foreach (ClawBubbleType t in Enum.GetValues(typeof(ClawBubbleType)))
            if (!collectedCounts.ContainsKey(t)) collectedCounts[t] = 0;
    }

    public void EvaluateBubble(ClawBubbleType type)
    {
        Debug.Log("EvaluateBubble: " + type);
        // count every collected bubble
        collectedCounts[type] = GetCount(type) + 1;

        int points = 0;

        switch (type)
        {
            case ClawBubbleType.Wolf:
                points += wolfPoints;
                EnqueueCombo(type, comboQueue, 3, () =>
                {
                    AddScore(comboBonus);
                    OnComboAchieved?.Invoke(new[] { ClawBubbleType.Wolf, ClawBubbleType.Wolf, ClawBubbleType.Wolf });
                });
                break;

            case ClawBubbleType.GoldenWolf:
                points += goldenWolfJackpot;
                break;

            case ClawBubbleType.Star:
                points += starPoints;
                EnqueueCombo(ClawBubbleType.Star, starQueue, 3, () =>
                {
                    AddScore(starSuperBonus);
                    OnComboAchieved?.Invoke(new[] { ClawBubbleType.Star, ClawBubbleType.Star, ClawBubbleType.Star });
                });
                break;

            case ClawBubbleType.Crystal:
                // primes next-grab multiplier
                crystalPrimed = true;
                break;

            case ClawBubbleType.Time:
                OnTimeAdded?.Invoke(addTimeSeconds);
                Debug.Log("TimeAdded Function");
                break;

            case ClawBubbleType.Freeze:
                OnPlatformFreeze?.Invoke(freezeDuration);
                break;

            case ClawBubbleType.Turbo:
                OnPlatformTurbo?.Invoke(turboDuration);
                break;

            case ClawBubbleType.Bomb:
                OnClawDisabled?.Invoke(bombDisableSeconds);
                OnPlatformTurbo?.Invoke(turboDuration);
                break;

            case ClawBubbleType.Shock:
                OnClawJam?.Invoke(shockJamSeconds);
                break;
        }

        // Apply crystal multiplier if primed (and we actually scored)
        if (crystalPrimed && points > 0)
        {
            points = Mathf.RoundToInt(points * crystalNextGrabMultiplier);
            crystalPrimed = false;
        }

        if (points > 0) AddScore(points);

        // Tell spawner to introduce new targets
        if (ClawBubbleSpawner.Instance)
            ClawBubbleSpawner.Instance.NotifyBubbleGrabbed(type);
    }
    private void AddScore(int amount)
    {
        // If nothing to add or missing FX/canvas, just apply immediately.
        if (amount == 0 || ScoreUIObj == null || canvasTransform == null)
        {
            score += amount;
            OnScoreAdded?.Invoke(amount);
            OnScoreChanged?.Invoke(score);
            return;
        }

        const float MOVE_DURATION = 1f;
        const float START_DELAY = 1.1f;
        const int SIBLING_INDEX = 3;

        // Spawn FX
        var go = Instantiate(ScoreUIObj, canvasTransform);
        go.transform.SetSiblingIndex(Mathf.Min(SIBLING_INDEX, go.transform.parent.childCount - 1));

        var scoreFX = go.GetComponent<ClawGrabCoin>();
        if (scoreFX == null || scoreFX.score == null)
        {
            // If prefab is misconfigured, still apply score to avoid losing points.
            Destroy(go);
            score += amount;
            OnScoreAdded?.Invoke(amount);
            OnScoreChanged?.Invoke(score);
            return;
        }

        // Text with + / - automatically
        scoreFX.score.text = amount.ToString("+0;-0;0") + " <sprite name=ball>";

        // Choose a move target (child 0 if present, else root)
        Transform target = go.transform.childCount > 0 ? go.transform.GetChild(0) : go.transform;

        bool applied = false;
        void ApplyScoreOnce()
        {
            if (applied) return;
            applied = true;
            score += amount;
            OnScoreAdded?.Invoke(amount);
            OnScoreChanged?.Invoke(score);
        }

        // Animate (prefer anchored pos for UI)
        var rt = target as RectTransform;
        if (rt != null)
        {
            DOTween.Sequence()
                .AppendInterval(START_DELAY)
                .Append(rt.DOAnchorPos(Vector2.zero, MOVE_DURATION))
                .SetUpdate(true) // ignores timescale; good for UI
                .OnComplete(ApplyScoreOnce)
                .OnKill(ApplyScoreOnce);
        }
        else
        {
            DOTween.Sequence()
                .AppendInterval(START_DELAY)
                .Append(target.DOLocalMove(Vector3.zero, MOVE_DURATION))
                .SetUpdate(true)
                .OnComplete(ApplyScoreOnce)
                .OnKill(ApplyScoreOnce);
        }
    }

    //private void AddScore(int amount)
    //{
    //    ClawGrabCoin scoreFX = Instantiate(ScoreUIObj, canvasTransform).GetComponent<ClawGrabCoin>();
    //    scoreFX.transform.SetSiblingIndex(3);
    //    if (amount > 0)
    //        scoreFX.score.text = "+";
    //    scoreFX.score.text += amount + "<sprite name=ball>";
    //    scoreFX.transform.GetChild(0).transform.DOLocalMove(Vector3.zero, 1).SetDelay(1.75f).OnComplete(() =>
    //    {
    //        score += amount;
    //        OnScoreAdded?.Invoke(amount);      // delta
    //        OnScoreChanged?.Invoke(score);     // total
    //    });
    //}

    private void EnqueueCombo(ClawBubbleType t, Queue<ClawBubbleType> q, int target, Action onCombo)
    {
        q.Enqueue(t);
        while (q.Count > target) q.Dequeue();

        if (q.Count == target)
        {
            var arr = q.ToArray();
            bool allSame = true;
            for (int i = 1; i < arr.Length; i++)
                if (arr[i] != arr[0]) { allSame = false; break; }

            if (allSame) onCombo?.Invoke();
        }
    }
}