using System;

using System.Collections.Generic;

using TimeZoneConverter;

using TimeZoneConverter.Posix;

using TimeZoneNames;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        string tz = TZConvert.IanaToWindows("America/New_York");

        Console.WriteLine(tz);

        try

        {

            TimeZoneInfo tzi = TZConvert.GetTimeZoneInfo("Eastern Daylight Time");

            Console.WriteLine("#1 EDT offset: " + tzi.BaseUtcOffset);

        }

        catch (Exception ex)

        {

            Console.WriteLine("#1 Doesn't work");

        }

        try

        {

            string tz3 = TZConvert.WindowsToIana("Eastern Daylight Time");

            Console.WriteLine(tz3);

        }

        catch (Exception ex)

        {

            Console.WriteLine("#2 Doesn't work");

        }

        try

        {

            TimeZoneInfo tz4 = TZConvert.GetTimeZoneInfo("Eastern Daylight Time");

            Console.WriteLine(tz4.BaseUtcOffset);

        }

        catch (Exception ex)

        {

            Console.WriteLine("#3 Doesn't work");

        }

        TimeZoneInfo tzi2 = TZConvert.GetTimeZoneInfo("Eastern Standard Time");

        Console.WriteLine("Daylight Name: " + tzi2.DaylightName);

        Console.WriteLine("#4 EST offset: " + tzi2.BaseUtcOffset);

        // string posix = PosixTimeZone.FromIanaTimeZoneName("Australia/Sydney");

        // Console.WriteLine(posix);

        /*

        foreach (string timezone in TZConvert.KnownWindowsTimeZoneIds)

        {

            Console.WriteLine(timezone);

            TimeZoneInfo tze = TZConvert.GetTimeZoneInfo(timezone);

            if (tze.SupportsDaylightSavingTime) {

                Console.WriteLine("DAYLIGHT NAME: " + tze.DaylightName);

            }

        }

        */

        try

        {

            TimeZoneInfo tz6 = getTimeZoneInfo("Eastern Daylight Time");

            Console.WriteLine("Conversion Works");

            Console.WriteLine("Daylight Time Now? " + tz6.IsDaylightSavingTime(DateTime.Now));

        }

        catch (Exception ex)

        {

            Console.WriteLine("#3 Doesn't work");

        }

    }

    protected static TimeZoneInfo getTimeZoneInfo(string windowsTimeZoneId) {

        // Get all Daylight Savings Times

        // Assumes daylight savings time names are unique

        Dictionary<string, TimeZoneInfo> daylightNames = new Dictionary<string, TimeZoneInfo>();

        foreach (string timezone in TZConvert.KnownWindowsTimeZoneIds)

        {

            TimeZoneInfo tze = TZConvert.GetTimeZoneInfo(timezone);

            if (tze.SupportsDaylightSavingTime) {

                daylightNames.Add(tze.DaylightName, tze);

            }

        }

        return daylightNames.ContainsKey(windowsTimeZoneId) ? daylightNames[windowsTimeZoneId] : TZConvert.GetTimeZoneInfo(windowsTimeZoneId);

    }

}