using UnityEngine;
using TMPro;

namespace VRBeats
{
    public class FinalScoreLabel : MonoBehaviour
    {
        [SerializeField] private TextMeshProUGUI scoreText = null;
        [SerializeField] private int length = 10;

        private string initialValue = "";
        private ScoreManager scoreManager = null;
        private GameObject resultRoot = null;
        private TextMeshProUGUI rankShadowText = null;
        private TextMeshProUGUI rankDepthText = null;
        private TextMeshProUGUI rankMainText = null;
        private TextMeshProUGUI resultScoreText = null;
        private TextMeshProUGUI resultComboText = null;

        private void Awake()
        {
            for (int n = 0; n < length; n++)
                initialValue += "0";

            scoreManager = FindFirstObjectByType<ScoreManager>();
            ApplyPopupTextStyle();
            BuildResultLayout();
        }

        public void ShowScore()
        {
            if (scoreText == null || scoreManager == null)
                return;

            SetTitleActive(false);
            gameObject.CancelAllTweens();

            if (resultRoot != null)
            {
                scoreText.gameObject.SetActive(false);
                PopulateResultLayout();
                resultRoot.SetActive(true);
            }
            else
            {
                scoreText.text = scoreManager.BuildResultSummary(length);
            }
        }

        public void ResetValues()
        {
            gameObject.CancelAllTweens();

            if (resultRoot != null)
                resultRoot.SetActive(false);
            if (scoreText != null)
                scoreText.gameObject.SetActive(true);

            SetTitleActive(true);
            ApplyPopupTextStyle();

            if (scoreText != null)
                scoreText.text = initialValue;
        }

        private void PopulateResultLayout()
        {
            if (scoreManager == null ||
                rankShadowText == null ||
                rankDepthText == null ||
                rankMainText == null ||
                resultScoreText == null ||
                resultComboText == null)
                return;

            string rank = scoreManager.Rank;
            Color mainColor = HexToColor(scoreManager.RankColorHex);
            Color depthColor = HexToColor(GetRankDepthColorHex(rank));

            rankShadowText.text = rank;
            rankDepthText.text = rank;
            rankDepthText.color = depthColor;
            rankMainText.text = rank;
            rankMainText.color = mainColor;
            resultScoreText.text = scoreManager.CurrentScore.ToString("N0");
            resultComboText.text = $"MAX COMBO  {scoreManager.MaxCombo}";
        }

        private void SetTitleActive(bool active)
        {
            Transform titleObj = scoreText != null
                ? scoreText.rectTransform.parent?.Find("Title")
                : null;

            if (titleObj != null)
                titleObj.gameObject.SetActive(active);
        }

        private void ApplyPopupTextStyle()
        {
            if (scoreText == null)
                return;

            RectTransform rect = scoreText.rectTransform;
            rect.anchorMin = new Vector2(0.5f, 0.5f);
            rect.anchorMax = new Vector2(0.5f, 0.5f);
            rect.anchoredPosition = new Vector2(0.0f, 0.0f);
            rect.sizeDelta = new Vector2(620.0f, 250.0f);

            scoreText.enableAutoSizing = true;
            scoreText.fontSizeMin = 1.2f;
            scoreText.fontSizeMax = 5.5f;
            scoreText.alignment = TextAlignmentOptions.MidlineLeft;
            scoreText.overflowMode = TextOverflowModes.Truncate;
            scoreText.textWrappingMode = TextWrappingModes.NoWrap;
            scoreText.lineSpacing = -10.0f;
            scoreText.color = Color.white;
            scoreText.richText = true;
        }

        private void BuildResultLayout()
        {
            if (scoreText == null)
                return;

            Transform parent = scoreText.rectTransform.parent;
            if (parent == null)
                return;

            GameObject root = new GameObject("ResultLayoutRoot");
            root.transform.SetParent(parent, false);
            RectTransform rootRect = root.AddComponent<RectTransform>();
            rootRect.anchorMin = new Vector2(0.5f, 0.5f);
            rootRect.anchorMax = new Vector2(0.5f, 0.5f);
            rootRect.anchoredPosition = Vector2.zero;
            rootRect.sizeDelta = new Vector2(620.0f, 250.0f);
            root.SetActive(false);
            resultRoot = root;

            // Rank badge left side — hierarchy order = draw order (shadow first, main on top)
            rankShadowText = MakeTmpLabel(root.transform, "RankShadowText",
                new Vector2(-166.0f, 6.0f), new Vector2(200.0f, 200.0f), 14.0f,
                new Color(0.0f, 0.0f, 0.0f, 0.55f), TextAlignmentOptions.Midline);
            rankDepthText = MakeTmpLabel(root.transform, "RankDepthText",
                new Vector2(-168.0f, 8.0f), new Vector2(200.0f, 200.0f), 14.0f,
                Color.white, TextAlignmentOptions.Midline);
            rankMainText = MakeTmpLabel(root.transform, "RankMainText",
                new Vector2(-170.0f, 10.0f), new Vector2(200.0f, 200.0f), 14.0f,
                Color.white, TextAlignmentOptions.Midline);

            // Score and combo right side
            resultScoreText = MakeTmpLabel(root.transform, "ResultScoreText",
                new Vector2(70.0f, 35.0f), new Vector2(260.0f, 80.0f), 5.5f,
                Color.white, TextAlignmentOptions.MidlineLeft);
            resultComboText = MakeTmpLabel(root.transform, "ResultComboText",
                new Vector2(70.0f, -35.0f), new Vector2(260.0f, 50.0f), 3.8f,
                new Color(0.84f, 0.97f, 1.0f, 1.0f), TextAlignmentOptions.MidlineLeft);
        }

        private TextMeshProUGUI MakeTmpLabel(Transform parent, string name,
            Vector2 pos, Vector2 size, float fontSize, Color color, TextAlignmentOptions align)
        {
            GameObject go = new GameObject(name);
            go.transform.SetParent(parent, false);
            RectTransform rect = go.AddComponent<RectTransform>();
            rect.anchorMin = new Vector2(0.5f, 0.5f);
            rect.anchorMax = new Vector2(0.5f, 0.5f);
            rect.anchoredPosition = pos;
            rect.sizeDelta = size;

            TextMeshProUGUI tmp = go.AddComponent<TextMeshProUGUI>();
            tmp.fontSize = fontSize;
            tmp.color = color;
            tmp.alignment = align;
            tmp.overflowMode = TextOverflowModes.Overflow;
            tmp.textWrappingMode = TextWrappingModes.NoWrap;
            tmp.raycastTarget = false;

            if (scoreText != null && scoreText.font != null)
            {
                tmp.font = scoreText.font;
                tmp.fontSharedMaterial = scoreText.fontSharedMaterial;
            }

            return tmp;
        }

        private static string GetRankDepthColorHex(string rank)
        {
            switch (rank)
            {
                case "M": return "#7EEBFF";
                case "S+": return "#116BFF";
                case "S": return "#B56A16";
                case "A": return "#5CAA30";
                case "B": return "#B89E20";
                case "C": return "#C05A10";
                case "D": return "#B02040";
                default: return "#606870";
            }
        }

        private static Color HexToColor(string hex)
        {
            if (ColorUtility.TryParseHtmlString(hex, out Color color))
                return color;
            return Color.white;
        }
    }
}