using System;
using System.Configuration;
using System.Drawing;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;

namespace GCAS.Code
{
    public class Tools
    {

        public static byte[] StrToToHexByte(string hexString)
        {
            hexString = hexString.Replace(" ", "");
            if ((hexString.Length % 2) != 0)
                hexString += " ";
            byte[] returnBytes = new byte[hexString.Length / 2];
            for (int i = 0; i < returnBytes.Length; i++)
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
            return returnBytes;
        }

        public static int ToIndex(string columnName)
        {
            if (!Regex.IsMatch(columnName.ToUpper(), @"[A-Z]+")) { throw new Exception("invalid parameter"); }

            int index = 0;
            char[] chars = columnName.ToUpper().ToCharArray();
            for (int i = 0; i < chars.Length; i++)
            {
                index += (chars[i] - 'A' + 1) * (int)Math.Pow(26, chars.Length - i - 1);
            }
            return index;
        }
        #region 获取 本周、本月、本季度、本年 的开始时间或结束时间
        /// <summary>
        /// 获取结束时间
        /// </summary>
        /// <param name="TimeType">Week、Month、Season、Year</param>
        /// <param name="now"></param>
        /// <returns></returns>
        public static DateTime? GetTimeStartByType(string TimeType, DateTime now)
        {
            switch (TimeType)
            {
                case "Week":
                    int dayOfWeek = -1 * (int)now.Date.DayOfWeek;
                    DateTime weekStartTime = now.AddDays(dayOfWeek + 1);//取本周一
                    if (dayOfWeek == 0) //如果今天是周日，则开始时间是上周一
                    {
                        weekStartTime = weekStartTime.AddDays(-7);
                    }
                    return weekStartTime;
                case "Month":
                    return now.AddDays(-now.Day + 1);
                case "Season":
                    var time = now.AddMonths(0 - ((now.Month - 1) % 3));
                    return time.AddDays(-time.Day + 1);
                case "Year":
                    return now.AddDays(-now.DayOfYear + 1);
                default:
                    return null;
            }
        }

        /// <summary>
        /// 获取结束时间
        /// </summary>
        /// <param name="TimeType">Week、Month、Season、Year</param>
        /// <param name="now"></param>
        /// <returns></returns>
        public static DateTime? GetTimeEndByType(string TimeType, DateTime now)
        {
            switch (TimeType)
            {
                case "Month":
                    return now.AddMonths(1).AddDays(-now.AddMonths(1).Day + 1).AddDays(-1);
                case "Season":
                    var time = now.AddMonths((3 - ((now.Month - 1) % 3) - 1));
                    return time.AddMonths(1).AddDays(-time.AddMonths(1).Day + 1).AddDays(-1);
                case "Year":
                    var time2 = now.AddYears(1);
                    return time2.AddDays(-time2.DayOfYear);
                default:
                    return null;
            }
        }

        #endregion

        public static string GetWeek(int week)
        {
            switch (Thread.CurrentThread.CurrentUICulture.Name)
            {
                case "en":
                    return ((DayOfWeek)week).ToString();
                case "zh-Hans":
                    switch (week)
                    {
                        case 1:
                            return "星期一";
                        case 2:
                            return "星期二";
                        case 3:
                            return "星期三";
                        case 4:
                            return "星期四";
                        case 5:
                            return "星期五";
                        case 6:
                            return "星期六";
                        case 7:
                            return "星期日";
                        default:
                            return "未知";
                    }
                default:
                    return "未知";
            }

        }
        public static string GetWeek(DayOfWeek week)
        {
            switch (Thread.CurrentThread.CurrentUICulture.Name)
            {
                case "en":
                    return (week).ToString();
                case "zh-Hans":
                    switch (week)
                    {
                        case DayOfWeek.Sunday:
                            return "星期日";
                        case DayOfWeek.Monday:
                            return "星期一";
                        case DayOfWeek.Tuesday:
                            return "星期二";
                        case DayOfWeek.Wednesday:
                            return "星期三";
                        case DayOfWeek.Thursday:
                            return "星期四";
                        case DayOfWeek.Friday:
                            return "星期五";
                        case DayOfWeek.Saturday:
                            return "星期六";
                        default:
                            return "未知";
                    }
                default:
                    return "未知";
            }

        }
        public static string GetDay(string time)
        {
            var dateTime = Convert.ToDateTime(DateTime.Now.Year + "-" + time);
            switch (Thread.CurrentThread.CurrentUICulture.Name)
            {
                case "en":
                    return dateTime.ToString("MMM. dd", CultureInfo.CreateSpecificCulture("en-GB"));
                case "zh-Hans":
                    return dateTime.ToString("MM月dd号");
                default:
                    return "未知";
            }

        }
        public static string GetMonth(int month)
        {
            switch (Thread.CurrentThread.CurrentUICulture.Name)
            {
                case "zh-Hans":
                    return month.ToString().PadLeft(2, '0') + "月份";
                case "en":
                    switch (month)
                    {
                        case 1:
                            return "January";
                        case 2:
                            return "February";
                        case 3:
                            return "March";
                        case 4:
                            return "April";
                        case 5:
                            return "May";
                        case 6:
                            return "June";
                        case 7:
                            return "July";
                        case 8:
                            return "August";
                        case 9:
                            return "September";
                        case 10:
                            return "October";
                        case 11:
                            return "November";
                        case 12:
                            return "December";
                        default:
                            return "未知";
                    }
                default:
                    return "未知";
            }

        }
        public static Bitmap GetLoginBackground()
        {
            switch (Thread.CurrentThread.CurrentUICulture.Name)
            {
                case "en":
                    return Properties.Resources.loginbgEN;
                case "zh-Hans":
                    return Properties.Resources.loginbgZH;
                default:
                    return Properties.Resources.loginbgZH;
            }
        }
        public static bool ToBool(object obj)
        {
            if (obj == null)
                return false;
            if (obj.ToString().ToUpper() == "TRUE" || obj.ToString() == "1")
                return true;
            if (obj.ToString().ToUpper() == "FALSE" || obj.ToString() == "0")
                return false;
            return false;
        }

        public static void UpdateAppConfig(string newKey, string newValue)
        {
            bool isModified = false;
            foreach (string key in ConfigurationManager.AppSettings)
            {
                if (key == newKey)
                {
                    isModified = true;
                }
            }
            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            if (isModified)
            {
                config.AppSettings.Settings.Remove(newKey);
            }
            config.AppSettings.Settings.Add(newKey, newValue);
            config.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("appSettings");
        }
        public static T ToEnum<T>(string name)
        {
            Type typeFromHandle = typeof(T);
            if (typeFromHandle.IsEnum)
            {
                return (T)Enum.Parse(typeof(T), name, true);
            }
            throw new InvalidCastException("必须是枚举类型才能转换。");
        }

    }
}