using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

namespace TKS.OutGame
{
    /// <summary>
    /// 아웃게임 와이어프레임 UI 도우미 — uGUI + Malgun Gothic(TextUtil) · 아트 없음 = 도형 + 글자 · 기준 1080×1920 · 색 = 목업 img03·06·08·11.
    /// 위치 인자는 전부 「부모 안 기준점(anchor) · 피벗 · 기준점에서의 거리 · 크기」(UI px).
    /// </summary>
    public static class UiKit
    {
        public static readonly Color Bg = new Color(0.95f, 0.92f, 0.85f);
        public static readonly Color Paper = new Color(0.99f, 0.97f, 0.92f);
        public static readonly Color Header = new Color(0.92f, 0.87f, 0.78f);
        public static readonly Color Ink = new Color(0.17f, 0.12f, 0.10f);
        public static readonly Color InkSoft = new Color(0.45f, 0.39f, 0.34f);
        public static readonly Color Dark = new Color(0.21f, 0.16f, 0.14f);
        public static readonly Color Red = new Color(0.74f, 0.26f, 0.19f);
        public static readonly Color Line = new Color(0.33f, 0.26f, 0.22f);
        public static readonly Color Slot = new Color(0.80f, 0.76f, 0.70f);
        public static readonly Color Coin = new Color(0.88f, 0.67f, 0.20f);
        public static readonly Color Jade = new Color(0.27f, 0.60f, 0.52f);
        public static readonly Color Grain = new Color(0.76f, 0.58f, 0.38f);
        public static readonly Color Ok = new Color(0.36f, 0.62f, 0.31f);
        public static readonly Color Star = new Color(0.93f, 0.68f, 0.13f);
        public static readonly Color Disabled = new Color(0.66f, 0.62f, 0.58f);
        public static readonly Color Purple = new Color(0.58f, 0.36f, 0.70f);
        public static readonly Color White = Color.white;

        static Sprite round;

        /// <summary>둥근 모서리 9-slice(모서리 22 px).</summary>
        public static Sprite Round
        {
            get
            {
                if (round == null) round = MakeRound(64, 22);
                return round;
            }
        }

        public static Sprite Circle
        {
            get { return ProceduralSprites.Circle; }
        }

        static Sprite MakeRound(int size, int radius)
        {
            var tex = new Texture2D(size, size, TextureFormat.RGBA32, false);
            tex.wrapMode = TextureWrapMode.Clamp;
            tex.hideFlags = HideFlags.DontSave;
            var px = new Color[size * size];
            for (int y = 0; y < size; y++)
                for (int x = 0; x < size; x++)
                {
                    float cx = Mathf.Clamp(x + 0.5f, radius, size - radius);
                    float cy = Mathf.Clamp(y + 0.5f, radius, size - radius);
                    float d = Vector2.Distance(new Vector2(x + 0.5f, y + 0.5f), new Vector2(cx, cy));
                    px[y * size + x] = new Color(1f, 1f, 1f, Mathf.Clamp01(radius - d + 0.5f));
                }
            tex.SetPixels(px);
            tex.Apply();
            float b = radius + 2;
            var sp = Sprite.Create(tex, new Rect(0, 0, size, size), new Vector2(0.5f, 0.5f), 100f, 0, SpriteMeshType.FullRect, new Vector4(b, b, b, b));
            sp.hideFlags = HideFlags.DontSave;
            return sp;
        }

        // ---------- 기본 ----------

        public static RectTransform Rect(string name, Transform parent, Vector2 anchor, Vector2 pivot, Vector2 pos, Vector2 size)
        {
            var go = new GameObject(name, typeof(RectTransform));
            go.transform.SetParent(parent, false);
            var rt = (RectTransform)go.transform;
            rt.anchorMin = rt.anchorMax = anchor;
            rt.pivot = pivot;
            rt.anchoredPosition = pos;
            rt.sizeDelta = size;
            return rt;
        }

        /// <summary>부모 전체에서 안쪽 여백(왼·오·위·아래)만 뺀 영역.</summary>
        public static RectTransform Fill(string name, Transform parent, float l = 0f, float r = 0f, float t = 0f, float b = 0f)
        {
            var go = new GameObject(name, typeof(RectTransform));
            go.transform.SetParent(parent, false);
            var rt = (RectTransform)go.transform;
            rt.anchorMin = Vector2.zero;
            rt.anchorMax = Vector2.one;
            rt.pivot = new Vector2(0.5f, 0.5f);
            rt.offsetMin = new Vector2(l, b);
            rt.offsetMax = new Vector2(-r, -t);
            return rt;
        }

        /// <summary>위쪽 띠(부모 가로 전체 · 위에서 top 아래 · 높이 h).</summary>
        public static RectTransform TopBand(string name, Transform parent, float top, float h, float l = 0f, float r = 0f)
        {
            var go = new GameObject(name, typeof(RectTransform));
            go.transform.SetParent(parent, false);
            var rt = (RectTransform)go.transform;
            rt.anchorMin = new Vector2(0f, 1f);
            rt.anchorMax = new Vector2(1f, 1f);
            rt.pivot = new Vector2(0.5f, 1f);
            rt.offsetMin = new Vector2(l, -top - h);
            rt.offsetMax = new Vector2(-r, -top);
            return rt;
        }

        public static Image Paint(RectTransform rt, Color c, bool rounded = true, bool raycast = false)
        {
            var img = rt.gameObject.AddComponent<Image>();
            img.color = c;
            if (rounded)
            {
                img.sprite = Round;
                img.type = Image.Type.Sliced;
            }
            img.raycastTarget = raycast;
            return img;
        }

        public static Image Box(string name, Transform parent, Vector2 anchor, Vector2 pivot, Vector2 pos, Vector2 size, Color c, bool rounded = true)
        {
            return Paint(Rect(name, parent, anchor, pivot, pos, size), c, rounded);
        }

        public static Image Dot(string name, Transform parent, Vector2 anchor, Vector2 pivot, Vector2 pos, float d, Color c)
        {
            var img = Rect(name, parent, anchor, pivot, pos, new Vector2(d, d)).gameObject.AddComponent<Image>();
            img.sprite = Circle;
            img.color = c;
            img.raycastTarget = false;
            return img;
        }

        /// <summary>테두리(외곽선 효과 · 둥근 상자에 굵은 선처럼 보임).</summary>
        public static void Border(Graphic g, Color c, float w = 4f)
        {
            var o = g.gameObject.AddComponent<Outline>();
            o.effectColor = c;
            o.effectDistance = new Vector2(w, -w);
            o.useGraphicAlpha = false;
            var o2 = g.gameObject.AddComponent<Outline>();
            o2.effectColor = c;
            o2.effectDistance = new Vector2(-w, w);
            o2.useGraphicAlpha = false;
        }

        public static Text Label(Transform parent, string s, int size, Color c, TextAnchor align, Vector2 anchor, Vector2 pivot, Vector2 pos, Vector2 box, bool bold = true)
        {
            var rt = Rect("Text", parent, anchor, pivot, pos, box);
            return Style(rt.gameObject.AddComponent<Text>(), s, size, c, align, bold);
        }

        /// <summary>부모 전체에 꽉 찬 글자(가운데 정렬 기본).</summary>
        public static Text FillLabel(Transform parent, string s, int size, Color c, TextAnchor align = TextAnchor.MiddleCenter, bool bold = true, float pad = 0f)
        {
            var rt = Fill("Text", parent, pad, pad, 0f, 0f);
            return Style(rt.gameObject.AddComponent<Text>(), s, size, c, align, bold);
        }

        static Text Style(Text t, string s, int size, Color c, TextAnchor align, bool bold)
        {
            t.font = TextUtil.Font;
            t.fontSize = size;
            t.fontStyle = bold ? FontStyle.Bold : FontStyle.Normal;
            t.alignment = align;
            t.color = c;
            t.horizontalOverflow = HorizontalWrapMode.Wrap;
            t.verticalOverflow = VerticalWrapMode.Overflow;
            t.supportRichText = true;
            t.raycastTarget = false;
            t.text = s;
            return t;
        }

        public static Button Btn(string name, Transform parent, string label, int fontSize, Color bg, Color fg, Vector2 anchor, Vector2 pivot, Vector2 pos, Vector2 size, Action onClick)
        {
            var img = Box(name, parent, anchor, pivot, pos, size, bg);
            img.raycastTarget = true;
            var b = img.gameObject.AddComponent<Button>();
            var cb = b.colors;
            cb.disabledColor = new Color(0.75f, 0.75f, 0.75f, 0.85f);
            b.colors = cb;
            if (onClick != null) b.onClick.AddListener(() => onClick());
            FillLabel(img.transform, label, fontSize, fg, TextAnchor.MiddleCenter, true, 6f);
            return b;
        }

        public static Text LabelOf(Button b)
        {
            return b.GetComponentInChildren<Text>(true);
        }

        /// <summary>둥근 막대 게이지 · 반환 = 채움(SetBar 로 0~1).</summary>
        public static RectTransform Bar(string name, Transform parent, Vector2 anchor, Vector2 pivot, Vector2 pos, Vector2 size, Color bg, Color fg)
        {
            var back = Box(name, parent, anchor, pivot, pos, size, bg);
            var fill = Fill("Fill", back.transform);
            fill.anchorMax = new Vector2(0f, 1f);
            Paint(fill, fg);
            return fill;
        }

        public static void SetBar(RectTransform fill, float v)
        {
            v = Mathf.Clamp01(v);
            fill.anchorMax = new Vector2(v, 1f);
            fill.gameObject.SetActive(v > 0.001f);
        }

        /// <summary>세로 스크롤 격자 목록(칸 크기 cell · 열 columns) · 반환 = 내용(자식 = 칸).</summary>
        public static RectTransform ScrollGrid(string name, Transform parent, float l, float r, float t, float b, Vector2 cell, Vector2 spacing, int columns, out ScrollRect scroll)
        {
            var vp = Fill(name, parent, l, r, t, b);
            var vimg = vp.gameObject.AddComponent<Image>();
            vimg.color = new Color(1f, 1f, 1f, 0f);
            vimg.raycastTarget = true;
            vp.gameObject.AddComponent<RectMask2D>();
            var content = new GameObject("Content", typeof(RectTransform)).GetComponent<RectTransform>();
            content.SetParent(vp, false);
            content.anchorMin = new Vector2(0f, 1f);
            content.anchorMax = new Vector2(1f, 1f);
            content.pivot = new Vector2(0.5f, 1f);
            content.offsetMin = content.offsetMax = Vector2.zero;
            var grid = content.gameObject.AddComponent<GridLayoutGroup>();
            grid.cellSize = cell;
            grid.spacing = spacing;
            grid.constraint = GridLayoutGroup.Constraint.FixedColumnCount;
            grid.constraintCount = columns;
            grid.childAlignment = TextAnchor.UpperCenter;
            grid.padding = new RectOffset(0, 0, 6, 12);
            var fit = content.gameObject.AddComponent<ContentSizeFitter>();
            fit.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
            scroll = vp.gameObject.AddComponent<ScrollRect>();
            scroll.viewport = vp;
            scroll.content = content;
            scroll.horizontal = false;
            scroll.vertical = true;
            scroll.movementType = ScrollRect.MovementType.Clamped;
            scroll.scrollSensitivity = 60f;
            return content;
        }

        public static void Clear(Transform t)
        {
            for (int i = t.childCount - 1; i >= 0; i--)
            {
                var c = t.GetChild(i).gameObject;
                c.SetActive(false);
                UnityEngine.Object.Destroy(c);
            }
        }

        /// <summary>목록 칸(격자 자식) — 둥근 카드 + 클릭.</summary>
        public static Image Cell(Transform content, string name, Color fill, Action onClick)
        {
            var go = new GameObject(name, typeof(RectTransform));
            go.transform.SetParent(content, false);
            var img = Paint((RectTransform)go.transform, fill);
            img.raycastTarget = true;
            if (onClick != null)
            {
                var b = go.AddComponent<Button>();
                b.onClick.AddListener(() => onClick());
            }
            return img;
        }

        // ---------- 영웅 표시 ----------

        public static Color TypeColor(UnitType t)
        {
            switch (t)
            {
                case UnitType.Infantry: return new Color(0.62f, 0.33f, 0.22f);
                case UnitType.Spear: return new Color(0.30f, 0.50f, 0.30f);
                case UnitType.Cavalry: return new Color(0.28f, 0.32f, 0.45f);
                case UnitType.Archer: return new Color(0.70f, 0.52f, 0.20f);
                case UnitType.Strategist: return Purple;
            }
            return Dark;
        }

        /// <summary>등급(승급 green… · 장비 white…) 표시 이름.</summary>
        public static string GradeKo(string g)
        {
            switch (g)
            {
                case "white": return "흰";
                case "green": return "녹";
                case "blue": return "청";
                case "purple": return "자";
                case "orange": return "주";
                case "gold": return "금";
            }
            return g;
        }

        public static Color GradeColor(string g)
        {
            switch (g)
            {
                case "white": return new Color(0.80f, 0.79f, 0.76f);
                case "green": return new Color(0.38f, 0.64f, 0.33f);
                case "blue": return new Color(0.29f, 0.48f, 0.78f);
                case "purple": return Purple;
                case "orange": return new Color(0.90f, 0.50f, 0.18f);
                case "gold": return new Color(0.92f, 0.74f, 0.16f);
            }
            return Slot;
        }

        public static string Stars(int n, int max)
        {
            var sb = new System.Text.StringBuilder();
            for (int i = 0; i < max; i++) sb.Append(i < n ? "★" : "☆");
            return sb.ToString();
        }

        static readonly Dictionary<string, Sprite> artCache = new Dictionary<string, Sprite>();

        /// <summary>일러 = Resources/Units/&lt;art&gt; front_idle 첫 프레임(없으면 다른 클립 첫 프레임 · 없으면 null = 도형).</summary>
        public static Sprite ArtSprite(string art)
        {
            if (string.IsNullOrEmpty(art)) return null;
            Sprite sp;
            if (artCache.TryGetValue(art, out sp)) return sp;
            var a = UnitArt.Load(art);
            Sprite[] frames = null;
            if (a != null && !a.Clips.TryGetValue("front_idle", out frames))
                foreach (var kv in a.Clips)
                {
                    frames = kv.Value;
                    break;
                }
            sp = frames != null && frames.Length > 0 ? frames[0] : null;
            artCache[art] = sp;
            return sp;
        }

        /// <summary>
        /// 초상(틀 안을 마스크) — 일러가 있으면 그 그림(zoom &gt; 1 = 위쪽 얼굴 부분 확대) · 없으면 병종 색 원 + 병종 글자.
        /// circle = 원형 틀(편성 자리) · false = 둥근 사각.
        /// </summary>
        public static RectTransform Portrait(string name, Transform parent, HeroDb.Hero h, Vector2 anchor, Vector2 pivot, Vector2 pos, Vector2 size, bool circle, float zoom, Color frame)
        {
            var rt = Rect(name, parent, anchor, pivot, pos, size);
            var bg = rt.gameObject.AddComponent<Image>();
            bg.color = frame;
            bg.raycastTarget = false;
            if (circle) bg.sprite = Circle;
            else
            {
                bg.sprite = Round;
                bg.type = Image.Type.Sliced;
            }
            var mask = rt.gameObject.AddComponent<Mask>();
            mask.showMaskGraphic = frame.a > 0.01f;
            if (frame.a <= 0.01f) bg.color = Color.white; // 투명 틀: 알파 0 그래픽은 스텐실을 안 써서 자식이 안 보임 → 불투명 + 그리지 않음
            var sp = h != null ? ArtSprite(h.art) : null;
            if (sp != null)
            {
                // zoom ≤ 1 = 전신 가운데 · zoom > 1 = 위쪽(얼굴) 확대
                bool bust = zoom > 1f;
                var a = bust
                    ? Rect("Art", rt, new Vector2(0.5f, 1f), new Vector2(0.5f, 1f), new Vector2(0f, size.y * 0.06f * zoom), size * zoom)
                    : Rect("Art", rt, new Vector2(0.5f, 0.5f), new Vector2(0.5f, 0.5f), Vector2.zero, size * zoom);
                var img = a.gameObject.AddComponent<Image>();
                img.sprite = sp;
                img.preserveAspect = true;
                img.raycastTarget = false;
            }
            else if (h != null)
            {
                float d = Mathf.Min(size.x, size.y) * 0.72f;
                var dot = Dot("Shape", rt, new Vector2(0.5f, 0.5f), new Vector2(0.5f, 0.5f), Vector2.zero, d, TypeColor(h.type));
                FillLabel(dot.transform, UnitTypeInfo.Mark(h.type), Mathf.RoundToInt(d * 0.5f), White);
            }
            return rt;
        }

        /// <summary>병종 배지(어두운 둥근 칸 + 글자).</summary>
        public static Image TypeBadge(Transform parent, UnitType t, Vector2 anchor, Vector2 pivot, Vector2 pos, float h)
        {
            var b = Box("Type", parent, anchor, pivot, pos, new Vector2(h * 1.3f, h), Dark);
            FillLabel(b.transform, UnitTypeInfo.Mark(t), Mathf.RoundToInt(h * 0.62f), White);
            return b;
        }
    }
}