added ios extensions

Xamarin.RevenueCat.iOS.Extensions/Exceptions/PurchasesErrorException.cs

@@ -0,0 +1,37 @@
+using System;
+using Foundation;
+using Purchases;
+
+namespace Xamarin.RevenueCat.iOS.Extensions.Exceptions
+{
+    public class PurchasesErrorException : Exception
+    {
+        public NSError PurchasesError { get; }
+        public bool UserCancelled { get; }
+
+        public NSObject ReadableErrorCode { get; }
+        public NSObject UnderlyingError { get; }
+        public string LocalizedDescription { get; }
+        public RCPurchasesErrorCode PurchasesErrorCode { get; }
+
+        public PurchasesErrorException(NSError purchasesError, bool userCancelled)
+            : base($"{purchasesError?.Description} userCancelled: {userCancelled}")
+        {
+            PurchasesError = purchasesError;
+            UserCancelled = userCancelled;
+            if (purchasesError != null)
+            {
+                purchasesError.UserInfo.TryGetValue(RCPurchasesErrors.RCReadableErrorCodeKey,
+                    out NSObject readableErrorCode);
+                ReadableErrorCode = readableErrorCode;
+                purchasesError.UserInfo.TryGetValue(NSError.UnderlyingErrorKey, out NSObject underlyingError);
+                UnderlyingError = underlyingError;
+                var localizedDescription = purchasesError.LocalizedDescription;
+                LocalizedDescription = localizedDescription;
+
+                int purchaseErrorCodeInt = (int) purchasesError.Code;
+                PurchasesErrorCode = (RCPurchasesErrorCode) purchaseErrorCodeInt;
+            }
+        }
+    }
+}

Xamarin.RevenueCat.iOS.Extensions/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("Xamarin.RevenueCat.iOS.Extensions")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Xamarin.RevenueCat.iOS.Extensions")]
+[assembly: AssemblyCopyright("Copyright ©  2017")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("50c7b8c9-e664-45af-b88e-0c9b8b9c1be1")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

Xamarin.RevenueCat.iOS.Extensions/PurchaseSuccessInfo.cs

@@ -0,0 +1,17 @@
+using Purchases;
+using StoreKit;
+
+namespace Xamarin.RevenueCat.iOS.Extensions
+{
+    public class PurchaseSuccessInfo
+    {
+        public SKPaymentTransaction Transaction { get; }
+        public RCPurchaserInfo PurchaserInfo { get; }
+
+        public PurchaseSuccessInfo(SKPaymentTransaction transaction, RCPurchaserInfo purchaserInfo)
+        {
+            Transaction = transaction;
+            PurchaserInfo = purchaserInfo;
+        }
+    }
+}

Xamarin.RevenueCat.iOS.Extensions/RCPurchasesExtensions.cs

@@ -0,0 +1,84 @@
+using System.Threading;
+using System.Threading.Tasks;
+using Foundation;
+using Purchases;
+using StoreKit;
+using Xamarin.RevenueCat.iOS.Extensions.Exceptions;
+
+namespace Xamarin.RevenueCat.iOS.Extensions
+{
+    public static class RCPurchasesExtensions
+    {
+        public static Task<RCOfferings> GetOfferingsAsync(this RCPurchases purchases,
+            CancellationToken cancellationToken = default)
+        {
+            var tcs = new TaskCompletionSource<RCOfferings>();
+            cancellationToken.Register(() => tcs.TrySetCanceled());
+            purchases.OfferingsWithCompletionBlock((RCOfferings offerings, NSError error) =>
+            {
+                if (error != null)
+                {
+                    tcs.TrySetException(new PurchasesErrorException(error, false));
+                }
+
+                tcs.TrySetResult(offerings);
+            });
+            return tcs.Task;
+        }
+
+        public static Task<PurchaseSuccessInfo> PurchasePackageAsync(this RCPurchases purchases,
+            RCPackage packageToPurchase, CancellationToken cancellationToken = default)
+        {
+            var tcs = new TaskCompletionSource<PurchaseSuccessInfo>();
+            cancellationToken.Register(() => tcs.TrySetCanceled());
+            purchases.PurchasePackage(packageToPurchase,
+                (SKPaymentTransaction transaction, RCPurchaserInfo purchaserInfo, NSError error, bool userCancelled) =>
+                {
+                    if (error != null)
+                    {
+                        tcs.TrySetException(new PurchasesErrorException(error, userCancelled));
+                    }
+
+                    if (userCancelled)
+                    {
+                        tcs.TrySetException(new PurchasesErrorException(null, true));
+                    }
+
+                    tcs.TrySetResult(new PurchaseSuccessInfo(transaction, purchaserInfo));
+                });
+            return tcs.Task;
+        }
+
+        public static Task<RCPurchaserInfo> RestoreTransactionsAsync(this RCPurchases purchases, CancellationToken cancellationToken = default)
+        {
+            var tcs = new TaskCompletionSource<RCPurchaserInfo>();
+            cancellationToken.Register(() => tcs.TrySetCanceled());
+            purchases.RestoreTransactionsWithCompletionBlock((RCPurchaserInfo purchaserInfo, NSError error) =>
+            {
+                if (error != null)
+                {
+                    tcs.TrySetException(new PurchasesErrorException(error, false));
+                }
+
+                tcs.TrySetResult(purchaserInfo);
+            });
+            return tcs.Task;
+        }
+
+        public static Task<RCPurchaserInfo> GetPurchaserInfoAsync(this RCPurchases purchases, CancellationToken cancellationToken = default)
+        {
+            var tcs = new TaskCompletionSource<RCPurchaserInfo>();
+            cancellationToken.Register(() => tcs.TrySetCanceled());
+            purchases.PurchaserInfoWithCompletionBlock((RCPurchaserInfo purchaserInfo, NSError error) =>
+            {
+                if (error != null)
+                {
+                    tcs.TrySetException(new PurchasesErrorException(error, false));
+                }
+
+                tcs.TrySetResult(purchaserInfo);
+            });
+            return tcs.Task;
+        }
+    }
+}

Xamarin.RevenueCat.iOS.Extensions/Xamarin.RevenueCat.iOS.Extensions.csproj

@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <IsPackable>true</IsPackable>
+    <PackageId>Xamarin.RevenueCat.iOS.Extensions</PackageId>
+    <Description>Contains convenience methods and async extensions for Xamarin.RevenueCat.iOS</Description>
+    <Version>3.5.3.5</Version>
+    <Authors>Christian Kapplmüller</Authors>
+    <Company>fun.music IT GmbH</Company>
+    <PackageOutputPath>nugetoutput</PackageOutputPath>
+    <PackageLicensePath>..\..\..\LICENSE.txt</PackageLicensePath>
+  </PropertyGroup>
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{9774C184-1A52-40A3-82F7-3D27F92AD38E}</ProjectGuid>
+    <ProjectTypeGuids>{FEACFBD2-3405-455C-9665-78FE426C6842};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <TemplateGuid>{a52b8a63-bc84-4b47-910d-692533484892}</TemplateGuid>
+    <OutputType>Library</OutputType>
+    <RootNamespace>Xamarin.RevenueCat.iOS.Extensions</RootNamespace>
+    <IPhoneResourcePrefix>Resources</IPhoneResourcePrefix>
+    <AssemblyName>Xamarin.RevenueCat.iOS.Extensions</AssemblyName>
+    <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>full</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="Xamarin.iOS" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="RCPurchasesExtensions.cs" />
+    <Compile Include="Exceptions\PurchasesErrorException.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="PurchaseSuccessInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="NuGet.Build.Tasks.Pack" Version="5.7.0" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Xamarin.RevenueCat.iOS\Xamarin.RevenueCat.iOS.csproj">
+      <Project>{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}</Project>
+      <Name>Xamarin.RevenueCat.iOS</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
+</Project>

Xamarin.RevenueCat.iOS.Extensions/azure-pipeline-public-nuget-publish.yml

@@ -0,0 +1,57 @@
+trigger:
+  branches:
+    include:
+      - refs/tags/release-extensions-v*
+
+pool:
+  vmImage: 'macOS-10.15'
+
+variables:
+  - group: tonestro.private.artifacts
+
+steps:
+
+- bash: |
+    echo "##vso[task.setvariable variable=bindingsVersion]$(cat Xamarin.RevenueCat.iOS/Xamarin.RevenueCat.iOS.csproj | grep '<Version>' | awk -F '[<>]' '{print $3}')"
+
+- bash: |
+    echo "##vso[build.updatebuildnumber]xamarin-revenuecat-ios-extensions-$(Build.SourceBranchName)-$(Build.BuildId)"
+
+- bash: |
+    if [[ "$(Build.SourceBranchName)" != *"$(bindingsVersion)" ]]; then
+      echo "mismatch between tag $(Build.SourceBranchName) and nuget version $(bindingsVersion)"
+      exit 1
+    fi
+
+- bash: |
+    cd Xamarin.RevenueCat.iOS.Extensions
+    msbuild /t:Restore /p:Configuration=Release
+    msbuild /t:Build /p:Configuration=Release
+    msbuild /t:Pack /p:Configuration=Release
+
+- task: NuGetAuthenticate@0
+  displayName: 'NuGet Authenticate'
+- task: NuGetCommand@2
+  displayName: 'NuGet push'
+  inputs:
+    command: 'push'
+    packagesToPush: 'Xamarin.RevenueCat.iOS.Extensions/nugetoutput/Xamarin.RevenueCat.iOS.Extensions.*.nupkg'
+    nuGetFeedType: 'internal'
+    publishVstsFeed: '95a4928e-7a26-4e37-a11b-e681e1d9910c'
+    allowPackageConflicts: true
+
+#- bash: |
+#    dotnet nuget push Xamarin.RevenueCat.iOS.Extensions/nugetoutput/Xamarin.RevenueCat.iOS.Extensions.*.nupkg -k "$(azureDevOpsRepoApiKey)" -s "$(azureDevOpsRepoTargetUrl)"
+
+#- task: GitHubRelease@1
+#  inputs:
+#    gitHubConnection: 'github.com_thisisthekap'
+#    repositoryName: 'thisisthekap/Xamarin.RevenueCat.iOS'
+#    action: 'create'
+#    target: '$(Build.SourceVersion)'
+#    tagSource: 'userSpecifiedTag'
+#    tag: '$(Build.SourceBranchName)'
+#    title: 'Xamarin.RevenueCat.iOS.Extensions $(bindingsVersion)'
+#    assets: 'Xamarin.RevenueCat.iOS.Extensions/nugetoutput/Xamarin.RevenueCat.iOS.Extensions.*.nupkg'
+#    changeLogCompareToRelease: 'lastFullRelease'
+#    changeLogType: 'issueBased'

Xamarin.RevenueCat.iOS.sln

@@ -5,16 +5,42 @@ VisualStudioVersion = 16.0.808.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Xamarin.RevenueCat.iOS", "Xamarin.RevenueCat.iOS\Xamarin.RevenueCat.iOS.csproj", "{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Xamarin.RevenueCat.iOS.Extensions", "Xamarin.RevenueCat.iOS.Extensions\Xamarin.RevenueCat.iOS.Extensions.csproj", "{9774C184-1A52-40A3-82F7-3D27F92AD38E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
+		Debug|iPhoneSimulator = Debug|iPhoneSimulator
+		Release|iPhoneSimulator = Release|iPhoneSimulator
+		Debug|iPhone = Debug|iPhone
+		Release|iPhone = Release|iPhone
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{EAA9C04E-CFAD-49D2-A3A8-168A811D79DA}.Release|iPhone.Build.0 = Release|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{9774C184-1A52-40A3-82F7-3D27F92AD38E}.Release|iPhone.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE