Obsolete UnixTimestampExtensions methods (#2121)

* The equivalent of `public static DateTimeOffset FromUnixTime(this long unixTime)` exists in the framework since .NET Framework 4.6: https://docs.microsoft.com/en-us/dotnet/api/system.datetimeoffset.fromunixtimeseconds
* The equivalent of `public static long ToUnixTime(this DateTimeOffset date)` exists in the framework since .NET Framework 4.6: https://docs.microsoft.com/en-us/dotnet/api/system.datetimeoffset.tounixtimeseconds

Octokit.Tests/Clients/StatisticsClientTests.cs

@@ -4,7 +4,6 @@
 using System.Threading;
 using System.Threading.Tasks;
 using NSubstitute;
-using Octokit.Helpers;
 using Xunit;
 
 namespace Octokit.Tests.Clients
@@ -232,10 +231,10 @@ public async Task RequestsCorrectUrl()
  var codeFrequency = await statisticsClient.GetCodeFrequency("owner", "name");
 
  Assert.Equal(2, codeFrequency.AdditionsAndDeletionsByWeek.Count);
- Assert.Equal(firstTimestamp.FromUnixTime(), codeFrequency.AdditionsAndDeletionsByWeek[0].Timestamp);
+ Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(firstTimestamp), codeFrequency.AdditionsAndDeletionsByWeek[0].Timestamp);
  Assert.Equal(10, codeFrequency.AdditionsAndDeletionsByWeek[0].Additions);
  Assert.Equal(52, codeFrequency.AdditionsAndDeletionsByWeek[0].Deletions);
- Assert.Equal(secondTimestamp.FromUnixTime(), codeFrequency.AdditionsAndDeletionsByWeek[1].Timestamp);
+ Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(secondTimestamp), codeFrequency.AdditionsAndDeletionsByWeek[1].Timestamp);
  Assert.Equal(0, codeFrequency.AdditionsAndDeletionsByWeek[1].Additions);
  Assert.Equal(9, codeFrequency.AdditionsAndDeletionsByWeek[1].Deletions);
  }
@@ -260,10 +259,10 @@ public async Task RequestsCorrectUrlWithRepositoryId()
  var codeFrequency = await statisticsClient.GetCodeFrequency(1);
 
  Assert.Equal(2, codeFrequency.AdditionsAndDeletionsByWeek.Count);
- Assert.Equal(firstTimestamp.FromUnixTime(), codeFrequency.AdditionsAndDeletionsByWeek[0].Timestamp);
+ Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(firstTimestamp), codeFrequency.AdditionsAndDeletionsByWeek[0].Timestamp);
  Assert.Equal(10, codeFrequency.AdditionsAndDeletionsByWeek[0].Additions);
  Assert.Equal(52, codeFrequency.AdditionsAndDeletionsByWeek[0].Deletions);
- Assert.Equal(secondTimestamp.FromUnixTime(), codeFrequency.AdditionsAndDeletionsByWeek[1].Timestamp);
+ Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(secondTimestamp), codeFrequency.AdditionsAndDeletionsByWeek[1].Timestamp);
  Assert.Equal(0, codeFrequency.AdditionsAndDeletionsByWeek[1].Additions);
  Assert.Equal(9, codeFrequency.AdditionsAndDeletionsByWeek[1].Deletions);
  }
@@ -290,10 +289,10 @@ public async Task RequestsCorrectUrlWithCancellationToken()
  var codeFrequency = await client.GetCodeFrequency("owner", "name", cancellationToken);
 
  Assert.Equal(2, codeFrequency.AdditionsAndDeletionsByWeek.Count);
- Assert.Equal(firstTimestamp.FromUnixTime(), codeFrequency.AdditionsAndDeletionsByWeek[0].Timestamp);
+ Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(firstTimestamp), codeFrequency.AdditionsAndDeletionsByWeek[0].Timestamp);
  Assert.Equal(10, codeFrequency.AdditionsAndDeletionsByWeek[0].Additions);
  Assert.Equal(52, codeFrequency.AdditionsAndDeletionsByWeek[0].Deletions);
- Assert.Equal(secondTimestamp.FromUnixTime(), codeFrequency.AdditionsAndDeletionsByWeek[1].Timestamp);
+ Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(secondTimestamp), codeFrequency.AdditionsAndDeletionsByWeek[1].Timestamp);
  Assert.Equal(0, codeFrequency.AdditionsAndDeletionsByWeek[1].Additions);
  Assert.Equal(9, codeFrequency.AdditionsAndDeletionsByWeek[1].Deletions);
  }
@@ -320,10 +319,10 @@ public async Task RequestsCorrectUrlWithRepositoryIdWithCancellationToken()
  var codeFrequency = await client.GetCodeFrequency(1, cancellationToken);
 
  Assert.Equal(2, codeFrequency.AdditionsAndDeletionsByWeek.Count);
- Assert.Equal(firstTimestamp.FromUnixTime(), codeFrequency.AdditionsAndDeletionsByWeek[0].Timestamp);
+ Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(firstTimestamp), codeFrequency.AdditionsAndDeletionsByWeek[0].Timestamp);
  Assert.Equal(10, codeFrequency.AdditionsAndDeletionsByWeek[0].Additions);
  Assert.Equal(52, codeFrequency.AdditionsAndDeletionsByWeek[0].Deletions);
- Assert.Equal(secondTimestamp.FromUnixTime(), codeFrequency.AdditionsAndDeletionsByWeek[1].Timestamp);
+ Assert.Equal(DateTimeOffset.FromUnixTimeSeconds(secondTimestamp), codeFrequency.AdditionsAndDeletionsByWeek[1].Timestamp);
  Assert.Equal(0, codeFrequency.AdditionsAndDeletionsByWeek[1].Additions);
  Assert.Equal(9, codeFrequency.AdditionsAndDeletionsByWeek[1].Deletions);
  }

Octokit/Helpers/UnixTimeStampExtensions.cs

@@ -7,24 +7,24 @@ namespace Octokit.Helpers
  /// </summary>
  public static class UnixTimestampExtensions
  {
- static readonly DateTimeOffset epoch = new DateTimeOffset(1970, 1, 1, 0, 0, 0, TimeSpan.Zero);
-
  /// <summary>
  /// Convert a Unix tick to a <see cref="DateTimeOffset"/> with UTC offset
  /// </summary>
  /// <param name="unixTime">UTC tick</param>
+ [Obsolete("Use DateTimeOffset.FromUnixTimeSeconds(long seconds) instead.")]
  public static DateTimeOffset FromUnixTime(this long unixTime)
  {
- return epoch.AddSeconds(unixTime);
+ return DateTimeOffset.FromUnixTimeSeconds(unixTime);
  }
 
  /// <summary>
  /// Convert <see cref="DateTimeOffset"/> with UTC offset to a Unix tick
  /// </summary>
  /// <param name="date">Date Time with UTC offset</param>
+ [Obsolete("Use DateTimeOffset.ToUnixTimeSeconds() instead.")]
  public static long ToUnixTime(this DateTimeOffset date)
  {
- return Convert.ToInt64((date.ToUniversalTime() - epoch).TotalSeconds);
+ return date.ToUnixTimeSeconds();
  }
  }
 }

Octokit/Http/RateLimit.cs

@@ -7,7 +7,6 @@
 using System.Runtime.Serialization;
 #endif
 using System.Security;
-using Octokit.Helpers;
 using Octokit.Internal;
 
 namespace Octokit
@@ -57,7 +56,7 @@ public RateLimit(int limit, int remaining, long resetAsUtcEpochSeconds)
  /// The date and time at which the current rate limit window resets
  /// </summary>
  [Parameter(Key = "ignoreThisField")]
- public DateTimeOffset Reset { get { return ResetAsUtcEpochSeconds.FromUnixTime(); } }
+ public DateTimeOffset Reset => DateTimeOffset.FromUnixTimeSeconds(ResetAsUtcEpochSeconds);
 
  /// <summary>
  /// The date and time at which the current rate limit window resets - in UTC epoch seconds

Octokit/Models/Response/AdditionsAndDeletions.cs

@@ -2,7 +2,6 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Globalization;
-using Octokit.Helpers;
 
 namespace Octokit
 {
@@ -33,7 +32,7 @@ public AdditionsAndDeletions(IList<long> additionsAndDeletions)
  {
  throw new ArgumentException("Addition and deletion aggregate must only contain three data points.");
  }
- Timestamp = additionsAndDeletions[0].FromUnixTime();
+ Timestamp = DateTimeOffset.FromUnixTimeSeconds(additionsAndDeletions[0]);
  Additions = Convert.ToInt32(additionsAndDeletions[1]);
  Deletions = Convert.ToInt32(additionsAndDeletions[2]);
  }

Octokit/Models/Response/WeeklyCommitActivity.cs

@@ -4,7 +4,6 @@
 using System.Diagnostics;
 using System.Globalization;
 using System.Linq;
-using Octokit.Helpers;
 
 namespace Octokit
 {
@@ -37,10 +36,7 @@ public WeeklyCommitActivity(IEnumerable<int> days, int total, long week)
  /// </summary>
  public long Week { get; protected set; }
 
- public DateTimeOffset WeekTimestamp
- {
- get { return Week.FromUnixTime(); }
- }
+ public DateTimeOffset WeekTimestamp => DateTimeOffset.FromUnixTimeSeconds(Week);
 
  /// <summary>
  /// Get the number of commits made on any <see cref="DayOfWeek"/>

Octokit/Models/Response/WeeklyHash.cs

@@ -2,7 +2,6 @@
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
-using Octokit.Helpers;
 
 namespace Octokit
 {
@@ -37,7 +36,7 @@ public WeeklyHash(long w, int a, int d, int c)
 
  public DateTimeOffset Week
  {
- get { return W.FromUnixTime(); }
+ get { return DateTimeOffset.FromUnixTimeSeconds(W); }
  }
 
  public int Additions

Octokit/SimpleJson.cs

@@ -66,7 +66,6 @@
 using Octokit.Reflection;
 #if !SIMPLE_JSON_NO_LINQ_EXPRESSION
 using System.Linq.Expressions;
-using Octokit.Helpers;
 #endif
 #if SIMPLE_JSON_DYNAMIC
 using System.Dynamic;
@@ -1433,11 +1432,11 @@ public virtual object DeserializeObject(object value, Type type)
  {
  if (valueIsLong && (type == typeof(DateTimeOffset) || type == typeof(DateTimeOffset?)))
  {
- return ((long)value).FromUnixTime();
+ return DateTimeOffset.FromUnixTimeSeconds((long)value);
  }
  else if (valueIsLong && (type == typeof(DateTime) || type == typeof(DateTime?)))
  {
- return ((long)value).FromUnixTime().DateTime;
+ return DateTimeOffset.FromUnixTimeSeconds((long)value).DateTime;
  }
  obj = type == typeof(int) || type == typeof(long) || type == typeof(double) || type == typeof(float) || type == typeof(bool) || type == typeof(decimal) || type == typeof(byte) || type == typeof(short)
  ? Convert.ChangeType(value, type, CultureInfo.InvariantCulture)