using System.Collections;
using UnityEngine;
using UnityEngine.UI;
using TMPro;

public class EnemyCardController : MonoBehaviour
{
    [Header("UI Elements")]
    public Image avatarImage;
    public Animator avatarAnimator;
    public TMP_Text nicknameText;
    public TMP_Text dialogueText;
    public RectTransform dialoguePanel;

    [Header("Settings")]
    public float typingSpeed = 0.05f;
    public float panelExpandWidth = 300f;
    public float panelExpandSpeed = 5f;

    [Header("Animation names")]
    public string idleAnimationName = "Idle_bot_1";
    public string transitionIn = "forvard_bot";
    public string transitionOut = "back_bot";

    private Coroutine panelAnimCoroutine;
    private Coroutine textTypingCoroutine;
    private Vector2 dialogueOriginalPos;
    private WaitForSeconds cachedTypingWait;
    private System.Collections.Generic.HashSet<string> availableStates = new System.Collections.Generic.HashSet<string>();
    
    private void Awake()
    {
        if (dialoguePanel != null)
            dialogueOriginalPos = dialoguePanel.anchoredPosition;

        cachedTypingWait = new WaitForSeconds(typingSpeed);
        ValidateReferences();
    }

    private void OnValidate()
    {
        ValidateReferences();
    }

    private void ValidateReferences()
    {
        if (avatarImage == null) Debug.LogWarning($"[{name}] avatarImage не назначен!", this);
        if (nicknameText == null) Debug.LogWarning($"[{name}] nicknameText не назначен!", this);
        if (dialogueText == null) Debug.LogWarning($"[{name}] dialogueText не назначен!", this);
        if (dialoguePanel == null) Debug.LogWarning($"[{name}] dialoguePanel не назначен!", this);
    }

    private void OnDisable()
    {
        StopAllAnimations();
        ResetUIState();
    }

    public void SetEnemy(EnemyData enemy)
    {
        if (enemy == null)
        {
            Debug.LogWarning($"[{name}] SetEnemy: enemy is null!");
            return;
        }
        
        if (nicknameText != null)
            nicknameText.text = enemy.nickname;

        SetupAnimatorOrSprite(enemy);
        ResetUIState();
        
        // Устанавливаем порядок панели (только когда объект активен)
        if (dialoguePanel != null && gameObject.activeInHierarchy)
            dialoguePanel.SetSiblingIndex(0);
    }

    private void SetupAnimatorOrSprite(EnemyData enemy)
    {
        availableStates.Clear();

        if (enemy.animatorOverride != null && avatarAnimator != null)
        {
            avatarAnimator.runtimeAnimatorController = enemy.animatorOverride;
            avatarAnimator.enabled = true;

            // Кэшируем доступные клипы один раз
            var overrides = new System.Collections.Generic.List<System.Collections.Generic.KeyValuePair<AnimationClip, AnimationClip>>();
            enemy.animatorOverride.GetOverrides(overrides);

            foreach (var pair in overrides)
            {
                if (pair.Value != null) // Есть переопределённый клип
                    availableStates.Add(pair.Key.name);
            }

            SetEmotion(idleAnimationName);
        }
        else
        {
            if (avatarAnimator != null)
                avatarAnimator.enabled = false;
            
            if (enemy.characterSprite != null && avatarImage != null)
                avatarImage.sprite = enemy.characterSprite;
        }
    }

    private void ResetUIState()
    {
        if (dialogueText != null)
            dialogueText.text = "";
        
        if (dialoguePanel != null)
        {
            dialoguePanel.anchoredPosition = dialogueOriginalPos;
        }
    }

    private void StopAllAnimations()
    {
        if (panelAnimCoroutine != null)
        {
            StopCoroutine(panelAnimCoroutine);
            panelAnimCoroutine = null;
        }

        if (textTypingCoroutine != null)
        {
            StopCoroutine(textTypingCoroutine);
            textTypingCoroutine = null;
        }
    }


    /// <summary>
    /// Открывает карточку с анимацией, вызывает callback когда открылась
    /// </summary>
    public void ShowCard(string emotionState, System.Action onShown = null)
    {
        if (panelAnimCoroutine != null)
            StopCoroutine(panelAnimCoroutine);

        panelAnimCoroutine = StartCoroutine(ShowCardCoroutine(emotionState, onShown));
    }

    /// <summary>
    /// Закрывает карточку с анимацией, вызывает callback когда закрылась
    /// </summary>
    public void HideCard(System.Action onHidden = null)
    {
        if (panelAnimCoroutine != null)
            StopCoroutine(panelAnimCoroutine);

        panelAnimCoroutine = StartCoroutine(HideCardCoroutine(onHidden));
    }

    /// <summary>
    /// Печатает текст посимвольно, вызывает callback по окончании
    /// </summary>
    public void TypeText(string text, System.Action onComplete = null, bool skipSizePreparation = false)
    {
        if (textTypingCoroutine != null)
            StopCoroutine(textTypingCoroutine);

        textTypingCoroutine = StartCoroutine(TypeTextCoroutine(text, onComplete, skipSizePreparation));
    }

    /// <summary>
    /// Мгновенно устанавливает текст без анимации печати
    /// </summary>
    public void SetTextImmediate(string text)
    {
        if (textTypingCoroutine != null)
        {
            StopCoroutine(textTypingCoroutine);
            textTypingCoroutine = null;
        }

        if (dialogueText != null)
            dialogueText.text = text;
    }

    /// <summary>
    /// Подготавливает размер текста заранее (чтобы избежать "блика" при открытии панели)
    /// </summary>
    public IEnumerator PrepareTextSizeAsync(string text)
    {
        yield return PrepareTextSize(text);
    }

    private IEnumerator ShowCardCoroutine(string emotionState, System.Action onShown)
    {
        if (dialoguePanel == null) yield break;

        SetEmotion(transitionIn);

        Vector2 hiddenPos = dialogueOriginalPos;
        Vector2 shownPos = hiddenPos + new Vector2(panelExpandWidth, 0);

        float t = 0f;
        while (t < 1f)
        {
            t += Time.deltaTime * panelExpandSpeed;
            dialoguePanel.anchoredPosition = Vector2.Lerp(hiddenPos, shownPos, t);
            yield return null;
        }

        dialoguePanel.anchoredPosition = shownPos;
        SetEmotion(emotionState);

        onShown?.Invoke();
    }

    private IEnumerator HideCardCoroutine(System.Action onHidden)
    {
        if (dialoguePanel == null) yield break;

        SetEmotion(transitionOut);
        
        if (dialogueText != null)
            dialogueText.text = "";

        Vector2 hiddenPos = dialogueOriginalPos;
        Vector2 shownPos = hiddenPos + new Vector2(panelExpandWidth, 0);

        float t = 0f;
        while (t < 1f)
        {
            t += Time.deltaTime * panelExpandSpeed;
            dialoguePanel.anchoredPosition = Vector2.Lerp(shownPos, hiddenPos, t);
            yield return null;
        }

        dialoguePanel.anchoredPosition = hiddenPos;
        SetEmotion(idleAnimationName);

        onHidden?.Invoke();
    }

    private IEnumerator TypeTextCoroutine(string text, System.Action onComplete, bool skipSizePreparation)
    {
        if (dialogueText == null) yield break;

        // Подготовка размера шрифта (пропускаем если уже сделано)
        if (!skipSizePreparation)
        {
            yield return PrepareTextSize(text);
        }

        // Печать по символам через maxVisibleCharacters (оптимизация)
        dialogueText.text = text;
        dialogueText.ForceMeshUpdate();
        
        int totalChars = dialogueText.textInfo.characterCount;
        dialogueText.maxVisibleCharacters = 0;

        for (int i = 0; i <= totalChars; i++)
        {
            dialogueText.maxVisibleCharacters = i;
            yield return cachedTypingWait;
        }

        onComplete?.Invoke();
    }

    private IEnumerator PrepareTextSize(string text)
    {
        if (dialogueText == null) yield break;

        dialogueText.enableWordWrapping = true;
        dialogueText.overflowMode = TextOverflowModes.Overflow;
        dialogueText.text = text;
        dialogueText.enableAutoSizing = true;
        dialogueText.fontSizeMin = 5;

        yield return null; // Ждём кадр для расчёта

        float finalFontSize = dialogueText.fontSize;
        dialogueText.enableAutoSizing = false;
        dialogueText.fontSize = finalFontSize;
        dialogueText.text = "";
    }


    public void SetEmotion(string stateName)
    {
        if (avatarAnimator == null || !avatarAnimator.enabled || string.IsNullOrEmpty(stateName)) 
            return;

        if (availableStates.Contains(stateName))
            avatarAnimator.Play(stateName);
    }
}