419 lines
12 KiB
C#
419 lines
12 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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namespace ASC.Api.Core;
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[TypeConverter(typeof(ApiDateTimeTypeConverter))]
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public sealed class ApiDateTime : IComparable<ApiDateTime>, IComparable
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{
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public DateTime UtcTime { get; private set; }
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public TimeSpan TimeZoneOffset { get; private set; }
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internal static readonly string[] Formats = new[]
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{
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"o",
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"yyyy'-'MM'-'dd'T'HH'-'mm'-'ss'.'fffffffK",
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"yyyy'-'MM'-'dd'T'HH'-'mm'-'ss'.'fffK",
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"yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fffK",
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"yyyy'-'MM'-'dd'T'HH'-'mm'-'ssK",
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"yyyy'-'MM'-'dd'T'HH':'mm':'ssK",
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"yyyy'-'MM'-'dd"
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};
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private readonly TenantManager _tenantManager;
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private readonly TimeZoneConverter _timeZoneConverter;
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public ApiDateTime() : this(null, null, null) { }
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public ApiDateTime(
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TenantManager tenantManager,
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TimeZoneConverter timeZoneConverter,
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DateTime? dateTime)
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: this(tenantManager, dateTime, null, timeZoneConverter) { }
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public ApiDateTime(
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TenantManager tenantManager,
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DateTime? dateTime,
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TimeZoneInfo timeZone,
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TimeZoneConverter timeZoneConverter)
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{
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if (dateTime.HasValue && dateTime.Value > DateTime.MinValue && dateTime.Value < DateTime.MaxValue)
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{
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_tenantManager = tenantManager;
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_timeZoneConverter = timeZoneConverter;
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SetDate(dateTime.Value, timeZone);
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}
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else
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{
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UtcTime = DateTime.MinValue;
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TimeZoneOffset = TimeSpan.Zero;
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}
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}
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public ApiDateTime(DateTime utcTime, TimeSpan offset)
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{
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UtcTime = new DateTime(utcTime.Ticks, DateTimeKind.Utc);
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TimeZoneOffset = offset;
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}
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public static ApiDateTime Parse(string data, TenantManager tenantManager, TimeZoneConverter timeZoneConverter)
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{
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return Parse(data, null, tenantManager, timeZoneConverter);
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}
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public static ApiDateTime Parse(string data, TimeZoneInfo tz, TenantManager tenantManager, TimeZoneConverter timeZoneConverter)
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{
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ArgumentNullOrEmptyException.ThrowIfNullOrEmpty(data);
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var offsetPart = data.Substring(data.Length - 6, 6);
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if (DateTime.TryParseExact(data, Formats, CultureInfo.InvariantCulture, DateTimeStyles.AdjustToUniversal, out var dateTime))
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{
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//Parse time
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var tzOffset = TimeSpan.Zero;
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if (offsetPart.Contains(':') && TimeSpan.TryParse(offsetPart.TrimStart('+'), out tzOffset))
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{
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return new ApiDateTime(dateTime, tzOffset);
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}
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if (!data.EndsWith("Z", true, CultureInfo.InvariantCulture))
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{
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if (tz == null)
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{
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tz = GetTimeZoneInfo(tenantManager, timeZoneConverter);
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}
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tzOffset = tz.GetUtcOffset(dateTime);
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dateTime = dateTime.Subtract(tzOffset);
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}
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return new ApiDateTime(dateTime, tzOffset);
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}
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throw new ArgumentException("invalid date time format: " + data);
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}
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private void SetDate(DateTime value, TimeZoneInfo timeZone)
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{
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TimeZoneOffset = TimeSpan.Zero;
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UtcTime = DateTime.MinValue;
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if (timeZone == null)
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{
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timeZone = GetTimeZoneInfo(_tenantManager, _timeZoneConverter);
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}
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//Hack
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if (timeZone.IsInvalidTime(new DateTime(value.Ticks, DateTimeKind.Unspecified)))
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{
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value = value.AddHours(1);
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}
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if (value.Kind == DateTimeKind.Local)
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{
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value = TimeZoneInfo.ConvertTimeToUtc(new DateTime(value.Ticks, DateTimeKind.Unspecified), timeZone);
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}
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if (value.Kind == DateTimeKind.Unspecified)
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{
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value = new DateTime(value.Ticks, DateTimeKind.Utc); //Assume it's utc
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}
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if (value.Kind == DateTimeKind.Utc)
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{
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UtcTime = value; //Set UTC time
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TimeZoneOffset = timeZone.GetUtcOffset(value);
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}
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}
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private static TimeZoneInfo GetTimeZoneInfo(TenantManager tenantManager, TimeZoneConverter timeZoneConverter)
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{
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var timeZone = TimeZoneInfo.Local;
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try
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{
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timeZone = timeZoneConverter.GetTimeZone(tenantManager.GetCurrentTenant().TimeZone);
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}
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catch (Exception)
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{
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//Tenant failed
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}
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return timeZone;
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}
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private string ToRoundTripString(DateTime date, TimeSpan offset)
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{
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var dateString = date.ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fffffff", CultureInfo.InvariantCulture);
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var offsetString = offset.Ticks == 0
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? "Z" : ((offset < TimeSpan.Zero)
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? "-" : "+") + offset.ToString("hh\\:mm", CultureInfo.InvariantCulture);
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return dateString + offsetString;
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}
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public static ApiDateTime FromDate(TenantManager tenantManager, TimeZoneConverter timeZoneConverter, DateTime d)
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{
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var date = new ApiDateTime(tenantManager, timeZoneConverter, d);
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return date;
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}
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public static ApiDateTime FromDate(TenantManager tenantManager, TimeZoneConverter timeZoneConverter, DateTime? d)
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{
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if (d.HasValue)
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{
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var date = new ApiDateTime(tenantManager, timeZoneConverter, d);
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return date;
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}
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return null;
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}
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public static bool operator >(ApiDateTime left, ApiDateTime right)
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{
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if (ReferenceEquals(left, right))
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{
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return false;
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}
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if (left == null)
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{
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return false;
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}
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return left.CompareTo(right) > 0;
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}
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public static bool operator >=(ApiDateTime left, ApiDateTime right)
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{
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if (ReferenceEquals(left, right))
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{
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return false;
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}
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if (left == null)
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{
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return false;
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}
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return left.CompareTo(right) >= 0;
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}
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public static bool operator <=(ApiDateTime left, ApiDateTime right)
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{
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return !(left >= right);
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}
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public static bool operator <(ApiDateTime left, ApiDateTime right)
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{
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return !(left > right);
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}
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public static bool operator ==(ApiDateTime left, ApiDateTime right)
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{
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return Equals(left, right);
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}
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public static bool operator !=(ApiDateTime left, ApiDateTime right)
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{
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return !(left == right);
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}
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public static implicit operator DateTime(ApiDateTime d)
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{
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if (d == null)
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{
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return DateTime.MinValue;
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}
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return d.UtcTime;
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}
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public static implicit operator DateTime?(ApiDateTime d)
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{
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if (d == null)
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{
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return null;
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}
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return d.UtcTime;
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}
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public int CompareTo(DateTime other)
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{
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return CompareTo(new ApiDateTime(_tenantManager, _timeZoneConverter, other));
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}
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public int CompareTo(ApiDateTime other)
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{
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if (other == null)
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{
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return 1;
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}
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return UtcTime.CompareTo(other.UtcTime);
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}
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public override bool Equals(object obj)
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{
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if (obj is null)
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{
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return false;
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}
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if (ReferenceEquals(this, obj))
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{
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return true;
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}
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if (obj is not ApiDateTime)
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{
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return false;
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}
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return Equals((ApiDateTime)obj);
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}
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public bool Equals(ApiDateTime other)
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{
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if (other is null)
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{
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return false;
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}
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if (ReferenceEquals(this, other))
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{
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return true;
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}
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return UtcTime.Equals(other.UtcTime) && TimeZoneOffset.Equals(other.TimeZoneOffset);
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}
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public override int GetHashCode()
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{
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unchecked
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{
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return UtcTime.GetHashCode() * 397 + TimeZoneOffset.GetHashCode();
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}
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}
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public int CompareTo(object obj)
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{
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if (obj is DateTime dateTime)
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{
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return CompareTo(dateTime);
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}
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return obj is ApiDateTime apiDateTime ? CompareTo(apiDateTime) : 0;
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}
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public override string ToString()
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{
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var localUtcTime = UtcTime;
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if (!UtcTime.Equals(DateTime.MinValue))
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{
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localUtcTime = UtcTime.Add(TimeZoneOffset);
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}
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return ToRoundTripString(localUtcTime, TimeZoneOffset);
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}
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public static ApiDateTime GetSample()
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{
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return new ApiDateTime(DateTime.UtcNow, TimeSpan.Zero);
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}
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}
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public class ApiDateTimeTypeConverter : DateTimeConverter
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{
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public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
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{
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if (destinationType == typeof(string))
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{
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return value.ToString();
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}
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return base.ConvertTo(context, culture, value, destinationType);
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}
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public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
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{
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if (value is string @string)
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{
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return ApiDateTime.Parse(@string, null, null);
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}
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if (value is DateTime time)
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{
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return new ApiDateTime(null, null, time);
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}
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return base.ConvertFrom(context, culture, value);
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}
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}
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public class ApiDateTimeConverter : System.Text.Json.Serialization.JsonConverter<ApiDateTime>
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{
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public override ApiDateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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{
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if (reader.TryGetDateTime(out var result))
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{
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return new ApiDateTime(result, TimeSpan.Zero);
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}
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else
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{
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if (DateTime.TryParseExact(reader.GetString(), ApiDateTime.Formats,
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CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind, out var dateTime))
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{
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return new ApiDateTime(dateTime, TimeSpan.Zero);
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}
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else
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{
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return new ApiDateTime();
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}
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}
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}
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public override void Write(Utf8JsonWriter writer, ApiDateTime value, JsonSerializerOptions options)
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{
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writer.WriteStringValue(value.ToString());
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}
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}
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[Scope]
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public class ApiDateTimeHelper
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{
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private readonly TenantManager _tenantManager;
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private readonly TimeZoneConverter _timeZoneConverter;
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public ApiDateTimeHelper(TenantManager tenantManager, TimeZoneConverter timeZoneConverter)
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{
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_tenantManager = tenantManager;
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_timeZoneConverter = timeZoneConverter;
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}
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public ApiDateTime Get(DateTime? from)
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{
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return ApiDateTime.FromDate(_tenantManager, _timeZoneConverter, from);
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}
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} |