WIP Clean Architecture

Windows 8.1 App Uses keepasslib v2.44 (temporarily)

ModernKeePass.Infrastucture.12/UWP/StorageFileClient.cs

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+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices.WindowsRuntime;
+using System.Threading.Tasks;
+using Windows.Storage;
+using Windows.Storage.AccessCache;
+using ModernKeePass.Application.Common.Interfaces;
+
+namespace ModernKeePass.Infrastructure.UWP
+{
+    public class StorageFileClient: IFileProxy
+    {
+        public async Task<byte[]> OpenBinaryFile(string path)
+        {
+            var file = await StorageApplicationPermissions.FutureAccessList.GetFileAsync(path);
+            var result = await FileIO.ReadBufferAsync(file);
+            return result.ToArray();
+        }
+
+        public async Task<IList<string>> OpenTextFile(string path)
+        {
+            var file = await StorageApplicationPermissions.FutureAccessList.GetFileAsync(path);
+            var result = await FileIO.ReadLinesAsync(file);
+            return result;
+        }
+
+        public void ReleaseFile(string path)
+        {
+            StorageApplicationPermissions.FutureAccessList.Remove(path);
+        }
+
+        public async Task WriteBinaryContentsToFile(string path, byte[] contents)
+        {
+            var file = await StorageApplicationPermissions.FutureAccessList.GetFileAsync(path);
+            await FileIO.WriteBytesAsync(file, contents);
+        }
+    }
+}