/************************************************/
/*                                              */
/*     Copyright (c) 2018 - 2021 monitor1394    */
/*     https://github.com/monitor1394           */
/*                                              */
/************************************************/

using System;
using System.Collections.Generic;
using UnityEngine;

namespace XCharts
{
    /// <summary>
    /// 图形样式。
    /// </summary>
    [System.Serializable]
    public class ItemStyle : SubComponent
    {
        /// <summary>
        /// 线的类型。
        /// </summary>
        public enum Type
        {
            /// <summary>
            /// 实线
            /// </summary>
            Solid,
            /// <summary>
            /// 虚线
            /// </summary>
            Dashed,
            /// <summary>
            /// 点线
            /// </summary>
            Dotted
        }
        [SerializeField] private bool m_Show = false;
        [SerializeField] private Color32 m_Color;
        [SerializeField] private Color32 m_Color0;
        [SerializeField] private Color32 m_ToColor;
        [SerializeField] private Color32 m_ToColor2;
        [SerializeField] private Color32 m_BackgroundColor;
        [SerializeField] private float m_BackgroundWidth;
        [SerializeField] private Color32 m_CenterColor;
        [SerializeField] private float m_CenterGap;
        [SerializeField] private Type m_BorderType = Type.Solid;
        [SerializeField] private float m_BorderWidth = 0;
        [SerializeField] private Color32 m_BorderColor;
        [SerializeField] private Color32 m_BorderColor0;
        [SerializeField] private Color32 m_BorderToColor;
        [SerializeField] [Range(0, 1)] private float m_Opacity = 1;
        [SerializeField] private string m_TooltipFormatter;
        [SerializeField] private string m_NumericFormatter = "";
        [SerializeField] private float[] m_CornerRadius = new float[] { 0, 0, 0, 0 };

        public void Reset()
        {
            m_Show = false;
            m_Color = Color.clear;
            m_Color0 = Color.clear;
            m_ToColor = Color.clear;
            m_ToColor2 = Color.clear;
            m_BackgroundColor = Color.clear;
            m_BackgroundWidth = 0;
            m_CenterColor = Color.clear;
            m_CenterGap = 0;
            m_BorderType = Type.Solid;
            m_BorderWidth = 0;
            m_BorderColor = Color.clear;
            m_BorderColor0 = Color.clear;
            m_BorderToColor = Color.clear;
            m_Opacity = 1;
            m_TooltipFormatter = null;
            m_NumericFormatter = "";
            if (m_CornerRadius == null)
            {
                m_CornerRadius = new float[] { 0, 0, 0, 0 };
            }
            else
            {
                for (int i = 0; i < m_CornerRadius.Length; i++)
                    m_CornerRadius[i] = 0;
            }
        }

        /// <summary>
        /// 是否启用。
        /// </summary>
        public bool show
        {
            get { return m_Show; }
            set { if (PropertyUtil.SetStruct(ref m_Show, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 数据项颜色。
        /// </summary>
        public Color32 color
        {
            get { return m_Color; }
            set { if (PropertyUtil.SetColor(ref m_Color, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 数据项颜色。
        /// </summary>
        public Color32 color0
        {
            get { return m_Color0; }
            set { if (PropertyUtil.SetColor(ref m_Color0, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// Gradient color1.
        /// 渐变色的颜色1。
        /// </summary>
        public Color32 toColor
        {
            get { return m_ToColor; }
            set { if (PropertyUtil.SetColor(ref m_ToColor, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// Gradient color2.Only valid in line diagrams.
        /// 渐变色的颜色2。只在折线图中有效。
        /// </summary>
        public Color32 toColor2
        {
            get { return m_ToColor2; }
            set { if (PropertyUtil.SetColor(ref m_ToColor2, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 数据项背景颜色。
        /// </summary>
        public Color32 backgroundColor
        {
            get { return m_BackgroundColor; }
            set { if (PropertyUtil.SetColor(ref m_BackgroundColor, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 中心区域颜色。
        /// </summary>
        public Color32 centerColor
        {
            get { return m_CenterColor; }
            set { if (PropertyUtil.SetColor(ref m_CenterColor, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 中心区域间隙。
        /// </summary>
        public float centerGap
        {
            get { return m_CenterGap; }
            set { if (PropertyUtil.SetStruct(ref m_CenterGap, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 数据项背景宽度。
        /// </summary>
        public float backgroundWidth
        {
            get { return m_BackgroundWidth; }
            set { if (PropertyUtil.SetStruct(ref m_BackgroundWidth, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 边框的类型。
        /// </summary>
        public Type borderType
        {
            get { return m_BorderType; }
            set { if (PropertyUtil.SetStruct(ref m_BorderType, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 边框的颜色。
        /// </summary>
        public Color32 borderColor
        {
            get { return m_BorderColor; }
            set { if (PropertyUtil.SetColor(ref m_BorderColor, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 边框的颜色。
        /// </summary>
        public Color32 borderColor0
        {
            get { return m_BorderColor0; }
            set { if (PropertyUtil.SetColor(ref m_BorderColor0, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 边框的渐变色。
        /// </summary>
        public Color32 borderToColor
        {
            get { return m_BorderToColor; }
            set { if (PropertyUtil.SetColor(ref m_BorderToColor, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 边框宽。
        /// </summary>
        public float borderWidth
        {
            get { return m_BorderWidth; }
            set { if (PropertyUtil.SetStruct(ref m_BorderWidth, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 透明度。支持从 0 到 1 的数字，为 0 时不绘制该图形。
        /// </summary>
        public float opacity
        {
            get { return m_Opacity; }
            set { if (PropertyUtil.SetStruct(ref m_Opacity, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 提示框单项的字符串模版格式器。具体配置参考`Tooltip`的`formatter`
        /// </summary>
        public string tooltipFormatter
        {
            get { return m_TooltipFormatter; }
            set { if (PropertyUtil.SetClass(ref m_TooltipFormatter, value)) SetVerticesDirty(); }
        }
        /// <summary>
        /// Standard numeric format strings.
        /// 标准数字格式字符串。用于将数值格式化显示为字符串。
        /// 使用Axx的形式：A是格式说明符的单字符，支持C货币、D十进制、E指数、F定点数、G常规、N数字、P百分比、R往返、X十六进制的。xx是精度说明，从0-99。
        /// 参考：https://docs.microsoft.com/zh-cn/dotnet/standard/base-types/standard-numeric-format-strings
        /// </summary>
        /// <value></value>
        public string numericFormatter
        {
            get { return m_NumericFormatter; }
            set { if (PropertyUtil.SetClass(ref m_NumericFormatter, value)) SetComponentDirty(); }
        }
        /// <summary>
        /// The radius of rounded corner. Its unit is px. Use array to respectively specify the 4 corner radiuses((clockwise upper left, upper right, bottom right and bottom left)).
        /// 圆角半径。用数组分别指定4个圆角半径（顺时针左上，右上，右下，左下）。
        /// </summary>
        public float[] cornerRadius
        {
            get { return m_CornerRadius; }
            set { if (PropertyUtil.SetClass(ref m_CornerRadius, value, true)) SetVerticesDirty(); }
        }
        /// <summary>
        /// 实际边框宽。边框不显示时为0。
        /// </summary>
        public float runtimeBorderWidth { get { return NeedShowBorder() ? borderWidth : 0; } }

        /// <summary>
        /// 是否需要显示边框。
        /// </summary>
        public bool NeedShowBorder()
        {
            return borderWidth != 0 && !ChartHelper.IsClearColor(borderColor);
        }

        public Color32 GetColor()
        {
            if (m_Opacity == 1 || m_Color.a == 0) return m_Color;
            var color = m_Color;
            color.a = (byte)(color.a * m_Opacity);
            return color;
        }
        public Color32 GetColor0()
        {
            if (m_Opacity == 1 || m_Color0.a == 0) return m_Color0;
            var color = m_Color0;
            color.a = (byte)(color.a * m_Opacity);
            return color;
        }
        public Color32 GetColor(Color32 defaultColor)
        {
            var color = ChartHelper.IsClearColor(m_Color) ? defaultColor : m_Color;
            if (m_Opacity == 1 || color.a == 0) return color;
            color.a = (byte)(color.a * m_Opacity);
            return color;
        }
        public Color32 GetColor0(Color32 defaultColor)
        {
            var color = ChartHelper.IsClearColor(m_Color0) ? defaultColor : m_Color0;
            if (m_Opacity == 1 || color.a == 0) return color;
            color.a = (byte)(color.a * m_Opacity);
            return color;
        }
        public Color32 GetBorderColor(Color32 defaultColor)
        {
            var color = ChartHelper.IsClearColor(m_BorderColor) ? defaultColor : m_BorderColor;
            if (m_Opacity == 1 || color.a == 0) return color;
            color.a = (byte)(color.a * m_Opacity);
            return color;
        }
        public Color32 GetBorderColor0(Color32 defaultColor)
        {
            var color = ChartHelper.IsClearColor(m_BorderColor0) ? defaultColor : m_BorderColor0;
            if (m_Opacity == 1 || color.a == 0) return color;
            color.a = (byte)(color.a * m_Opacity);
            return color;
        }

        public bool IsNeedGradient()
        {
            return !ChartHelper.IsClearColor(m_ToColor) || !ChartHelper.IsClearColor(m_ToColor2);
        }

        public Color32 GetGradientColor(float value, Color32 defaultColor)
        {
            if (!IsNeedGradient()) return ChartConst.clearColor32;
            value = Mathf.Clamp01(value);
            var startColor = ChartHelper.IsClearColor(m_Color) ? defaultColor : m_Color;
            Color32 color;
            if (!ChartHelper.IsClearColor(m_ToColor2))
            {
                if (value <= 0.5f) color = Color32.Lerp(startColor, m_ToColor, 2 * value);
                else color = Color32.Lerp(m_ToColor, m_ToColor2, 2 * (value - 0.5f));
            }
            else
            {
                color = Color32.Lerp(startColor, m_ToColor, value);
            }
            if (m_Opacity != 1)
            {
                color.a = (byte)(color.a * m_Opacity);
            }
            return color;
        }
    }
}