Add IQuotaInfo interface

It also makes quota enabled backends return an instance of this interface instead of the quota components separately.
This way, getting quota stats requires only a single remote request on backends like Google Drive and OneDrive.

4 files changed, 51 insertions, 10 deletions

diff --git a/Duplicati/Library/Interface/Duplicati.Library.Interface.csproj b/Duplicati/Library/Interface/Duplicati.Library.Interface.csproj
index 5a2b82a5c..cde93b6aa 100644
--- a/Duplicati/Library/Interface/Duplicati.Library.Interface.csproj
+++ b/Duplicati/Library/Interface/Duplicati.Library.Interface.csproj
@@ -54,9 +54,11 @@
     <Compile Include="IGenericSourceModule.cs" />

     <Compile Include="IGenericModule.cs" />

     <Compile Include="IQuotaEnabledBackend.cs" />

+    <Compile Include="IQuotaInfo.cs" />

     <Compile Include="IStreamingBackend.cs" />

     <Compile Include="Properties\AssemblyInfo.cs" />

     <Compile Include="IGenericCallbackModule.cs" />

+    <Compile Include="QuotaInfo.cs" />

     <Compile Include="ResultInterfaces.cs" />

     <Compile Include="IWebModule.cs" />

     <Compile Include="IConnectionModule.cs" />

diff --git a/Duplicati/Library/Interface/IQuotaEnabledBackend.cs b/Duplicati/Library/Interface/IQuotaEnabledBackend.cs
index 57964f5d6..a813c1f85 100644
--- a/Duplicati/Library/Interface/IQuotaEnabledBackend.cs
+++ b/Duplicati/Library/Interface/IQuotaEnabledBackend.cs
@@ -11,16 +11,10 @@ namespace Duplicati.Library.Interface
     public interface IQuotaEnabledBackend : IBackend
     {
         /// <summary>
-        /// The total number of bytes available on the backend,
-        /// may return -1 if the particular host implementation
-        /// does not support quotas, but the backend does
+        /// Gets information about the quota on this backend.
+        /// This may return null if the particular host implementation
+        /// does not support quotas, but the backend does.
         /// </summary>
-        long TotalQuotaSpace { get; }
-        /// <summary>
-        /// The total number of unused bytes on the backend,
-        /// may return -1 if the particular host implementation
-        /// does not support quotas, but the backend does
-        /// </summary>
-        long FreeQuotaSpace { get; }
+        IQuotaInfo Quota { get; }
     }
 }
diff --git a/Duplicati/Library/Interface/IQuotaInfo.cs b/Duplicati/Library/Interface/IQuotaInfo.cs
new file mode 100644
index 000000000..81eb48153
--- /dev/null
+++ b/Duplicati/Library/Interface/IQuotaInfo.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Duplicati.Library.Interface
+{
+    public interface IQuotaInfo
+    {
+        /// <summary>
+        /// The total number of bytes available on the backend,
+        /// This may return -1 if the particular host implementation
+        /// does not support quotas, but the backend does
+        /// </summary>
+        long TotalQuotaSpace { get; }
+        /// <summary>
+        /// The total number of unused bytes on the backend,
+        /// This may return -1 if the particular host implementation
+        /// does not support quotas, but the backend does
+        /// </summary>
+        long FreeQuotaSpace { get; }
+    }
+}
diff --git a/Duplicati/Library/Interface/QuotaInfo.cs b/Duplicati/Library/Interface/QuotaInfo.cs
new file mode 100644
index 000000000..6158e1c7c
--- /dev/null
+++ b/Duplicati/Library/Interface/QuotaInfo.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Duplicati.Library.Interface
+{
+    public class QuotaInfo : IQuotaInfo
+    {
+        public QuotaInfo(long totalSpace, long freeSpace)
+        {
+            this.TotalQuotaSpace = totalSpace;
+            this.FreeQuotaSpace = freeSpace;
+        }
+
+        public long TotalQuotaSpace { get; private set; }
+
+        public long FreeQuotaSpace { get; private set; }
+    }
+}