From 5b19fb1d28a842233dbc5c6d4d0ffcc95085a7d3 Mon Sep 17 00:00:00 2001
From: Inga Lovinde <52715130+inga-lovinde@users.noreply.github.com>
Date: Wed, 12 Jul 2017 16:19:02 +0300
Subject: [PATCH] Core interfaces

---
 .../IContentEncryptor.cs                       | 11 +++++++++++
 .../ContentTransformations/IContentHasher.cs   |  9 +++++++++
 .../EternalArrowBackup.Contracts.csproj        |  2 +-
 .../SourceStorage/ISourceDirectory.cs          | 14 ++++++++++++++
 Source/Contracts/SourceStorage/ISourceFile.cs  | 13 +++++++++++++
 .../Contracts/SourceStorage/ISourceStorage.cs  | 12 ++++++++++++
 .../TargetStorage/ITargetDirectory.cs          | 14 ++++++++++++++
 Source/Contracts/TargetStorage/ITargetFile.cs  | 18 ++++++++++++++++++
 .../Contracts/TargetStorage/ITargetStorage.cs  |  9 +++++++++
 .../TargetStorage/ITargetStorageForRecovery.cs |  9 +++++++++
 10 files changed, 110 insertions(+), 1 deletion(-)
 create mode 100644 Source/Contracts/ContentTransformations/IContentEncryptor.cs
 create mode 100644 Source/Contracts/ContentTransformations/IContentHasher.cs
 create mode 100644 Source/Contracts/SourceStorage/ISourceDirectory.cs
 create mode 100644 Source/Contracts/SourceStorage/ISourceFile.cs
 create mode 100644 Source/Contracts/SourceStorage/ISourceStorage.cs
 create mode 100644 Source/Contracts/TargetStorage/ITargetDirectory.cs
 create mode 100644 Source/Contracts/TargetStorage/ITargetFile.cs
 create mode 100644 Source/Contracts/TargetStorage/ITargetStorage.cs
 create mode 100644 Source/Contracts/TargetStorage/ITargetStorageForRecovery.cs

diff --git a/Source/Contracts/ContentTransformations/IContentEncryptor.cs b/Source/Contracts/ContentTransformations/IContentEncryptor.cs
new file mode 100644
index 0000000..de5e83e
--- /dev/null
+++ b/Source/Contracts/ContentTransformations/IContentEncryptor.cs
@@ -0,0 +1,11 @@
+namespace EternalArrowBackup.Contracts.Encryption
+{
+    using System.Threading.Tasks;
+
+    public interface IContentEncryptor
+    {
+        Task<byte[]> Encrypt(byte[] originalData);
+
+        Task<byte[]> Decrypt(byte[] encryptedData);
+    }
+}
diff --git a/Source/Contracts/ContentTransformations/IContentHasher.cs b/Source/Contracts/ContentTransformations/IContentHasher.cs
new file mode 100644
index 0000000..2dde010
--- /dev/null
+++ b/Source/Contracts/ContentTransformations/IContentHasher.cs
@@ -0,0 +1,9 @@
+namespace EternalArrowBackup.Contracts.ContentTransformations
+{
+    using System.Threading.Tasks;
+
+    public interface IContentHasher
+    {
+        Task<string> ComputeHash(byte[] content);
+    }
+}
diff --git a/Source/Contracts/EternalArrowBackup.Contracts.csproj b/Source/Contracts/EternalArrowBackup.Contracts.csproj
index 954020d..9eca547 100644
--- a/Source/Contracts/EternalArrowBackup.Contracts.csproj
+++ b/Source/Contracts/EternalArrowBackup.Contracts.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netstandard1.4</TargetFramework>
diff --git a/Source/Contracts/SourceStorage/ISourceDirectory.cs b/Source/Contracts/SourceStorage/ISourceDirectory.cs
new file mode 100644
index 0000000..c109d7f
--- /dev/null
+++ b/Source/Contracts/SourceStorage/ISourceDirectory.cs
@@ -0,0 +1,14 @@
+namespace EternalArrowBackup.Contracts.SourceStorage
+{
+    using System;
+    using System.Threading.Tasks;
+
+    public interface ISourceDirectory
+    {
+        string NormalizedRelativePath { get; }
+
+        Task<ISourceFile> GetFile(string filename);
+
+        IObservable<ISourceFile> GetAllFiles();
+    }
+}
diff --git a/Source/Contracts/SourceStorage/ISourceFile.cs b/Source/Contracts/SourceStorage/ISourceFile.cs
new file mode 100644
index 0000000..42c4244
--- /dev/null
+++ b/Source/Contracts/SourceStorage/ISourceFile.cs
@@ -0,0 +1,13 @@
+namespace EternalArrowBackup.Contracts.SourceStorage
+{
+    using System.Threading.Tasks;
+
+    public interface ISourceFile
+    {
+        string Filename { get; }
+
+        long Size { get; }
+
+        Task<byte[]> ReadContents();
+    }
+}
diff --git a/Source/Contracts/SourceStorage/ISourceStorage.cs b/Source/Contracts/SourceStorage/ISourceStorage.cs
new file mode 100644
index 0000000..009d5d6
--- /dev/null
+++ b/Source/Contracts/SourceStorage/ISourceStorage.cs
@@ -0,0 +1,12 @@
+namespace EternalArrowBackup.Contracts.SourceStorage
+{
+    using System;
+    using System.Threading.Tasks;
+
+    public interface ISourceStorage
+    {
+        Task<ISourceDirectory> GetDirectory(string normalizedRelativePath);
+
+        IObservable<ISourceDirectory> GetAllDirectories();
+    }
+}
diff --git a/Source/Contracts/TargetStorage/ITargetDirectory.cs b/Source/Contracts/TargetStorage/ITargetDirectory.cs
new file mode 100644
index 0000000..0a0151f
--- /dev/null
+++ b/Source/Contracts/TargetStorage/ITargetDirectory.cs
@@ -0,0 +1,14 @@
+namespace EternalArrowBackup.Contracts.TargetStorage
+{
+    using System;
+    using System.Threading.Tasks;
+
+    public interface ITargetDirectory
+    {
+        Task UploadFile(string filename, byte[] content, string hash);
+
+        Task<ITargetFile> GetFile(string filename, string hash);
+
+        IObservable<ITargetFile> GetAllFiles();
+    }
+}
diff --git a/Source/Contracts/TargetStorage/ITargetFile.cs b/Source/Contracts/TargetStorage/ITargetFile.cs
new file mode 100644
index 0000000..c3d4eac
--- /dev/null
+++ b/Source/Contracts/TargetStorage/ITargetFile.cs
@@ -0,0 +1,18 @@
+namespace EternalArrowBackup.Contracts.TargetStorage
+{
+    using System;
+    using System.Threading.Tasks;
+
+    public interface ITargetFile
+    {
+        string Filename { get; }
+
+        string Hash { get; }
+
+        DateTime UploadDate { get; }
+
+        long Size { get; }
+
+        Task<byte[]> RetrieveContents();
+    }
+}
diff --git a/Source/Contracts/TargetStorage/ITargetStorage.cs b/Source/Contracts/TargetStorage/ITargetStorage.cs
new file mode 100644
index 0000000..74fdcef
--- /dev/null
+++ b/Source/Contracts/TargetStorage/ITargetStorage.cs
@@ -0,0 +1,9 @@
+namespace EternalArrowBackup.Contracts.TargetStorage
+{
+    using System.Threading.Tasks;
+
+    public interface ITargetStorage
+    {
+        Task<ITargetDirectory> GetDirectory(string normalizedRelativePath);
+    }
+}
diff --git a/Source/Contracts/TargetStorage/ITargetStorageForRecovery.cs b/Source/Contracts/TargetStorage/ITargetStorageForRecovery.cs
new file mode 100644
index 0000000..61afcee
--- /dev/null
+++ b/Source/Contracts/TargetStorage/ITargetStorageForRecovery.cs
@@ -0,0 +1,9 @@
+namespace EternalArrowBackup.Contracts.TargetStorage
+{
+    using System;
+
+    public interface ITargetStorageForRecovery
+    {
+        IObservable<ITargetDirectory> GetAllDirectories();
+    }
+}