using DevExpress.XtraEditors;
using System.Drawing;

namespace ZJ_BYD.Untils
{
    /// <summary>
    /// TextEdit自定义文本样式
    /// </summary>
    public class CustomHighlightText
    {
        #region 颜色配置
        /// <summary>
        /// 关键字颜色
        /// </summary>
        private static Color KeywordColor { get; set; } = Color.FromArgb(0, 176, 240);
        /// <summary>
        /// 字符串颜色
        /// </summary>
        private static Color StringColor { get; set; } = Color.FromArgb(0, 176, 80);
        /// <summary>
        ///被注释的字符颜色
        /// </summary>
        private static Color CommentColor { get; set; } = Color.FromArgb(127, 127, 127);
        /// <summary>
        /// 数字颜色
        /// </summary>
        private static Color NumberColor { get; set; } = Color.FromArgb(247, 150, 70);
        /// <summary>
        /// 日志info标识的颜色
        /// </summary>
        private static Color LogInfoColor { get; set; } = Color.FromArgb(0, 176, 240);
        /// <summary>
        /// 日志err标识的颜色
        /// </summary>
        private static Color LogErrColor { get; set; } = Color.FromArgb(240, 0, 0);
        #endregion
        /// <summary>
        /// 自定义文本显示
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public static void OnCustomHighlightText(object sender, TextEditCustomHighlightTextEventArgs e)
        {
            //HighlightKeyword(e);
            //HighlightNumbers(e);
            //HighlightStrings(e);
            // HighlightComment(e);
            HighlightLog(e);
        }

        #region [注释]的字符样式
        private static void HighlightComment(TextEditCustomHighlightTextEventArgs e)
        {
            string text = e.Text;
            int index = text.IndexOf("--");
            int index2 = text.IndexOf("//");
            if (index != -1 || index2 != -1)
                e.HighlightRange(index, text.Length - index, CommentColor);
        }
        #endregion

        #region 关键字样式
        private static string Keywords = "select;delete;from;insert;into;table;primary;key;varchar;integer;drop;if;exists;create;use;set;values;update;where;database;not;null";
        private static string[] keywordList;
        private static string[] KeywordList
        {
            get
            {
                if (keywordList == null)
                    keywordList = Keywords.Split(';');
                return keywordList;
            }
        }
        /// <summary>
        /// 关键字样式
        /// </summary>
        /// <param name="e"></param>
        private static void HighlightKeyword(TextEditCustomHighlightTextEventArgs e)
        {
            //e.HighlightWords("with", (block) => {
            //    block.BackColor = Color.Yellow;
            //    block.Padding = new Padding(5, 0, 5, 0);
            //});
            for (int i = 0; i < KeywordList.Length; i++)
            {
                e.HighlightWords(KeywordList[i], KeywordColor);
            }
        }
        #endregion

        #region 数字样式
        /// <summary>
        /// 数字样式
        /// </summary>
        /// <param name="e"></param>
        private static void HighlightNumbers(TextEditCustomHighlightTextEventArgs e)
        {
            string text = e.Text;
            int length = text.Length;
            int startWordIndex = 0;
            for (int i = 0; i < length; i++)
            {
                var ch = text[i];
                if (char.IsWhiteSpace(ch) || char.IsSeparator(ch) || char.IsPunctuation(ch))
                {
                    if (startWordIndex != -1 && i - startWordIndex > 0)
                        e.HighlightRange(startWordIndex, i - startWordIndex, NumberColor);
                    startWordIndex = i + 1;
                    continue;
                }
                if (!char.IsNumber(ch)) startWordIndex = -1;
            }
            if (startWordIndex != -1)
                e.HighlightRange(startWordIndex, length - startWordIndex, NumberColor);
        }
        #endregion

        private static void HighlightLog(TextEditCustomHighlightTextEventArgs e)
        {
            //e.HighlightWords("NG", (block) =>
            //{
            //    block.ForeColor = LogErrColor;
            //});
            //整行变色
            string text = e.Text;
            int index = text.IndexOf("NG");
            if (index != -1)
                e.HighlightRange(0, text.Length, LogErrColor);
        }
    }
}