Working on PPC Storage Provider !!!

2 files changed, 146 insertions, 0 deletions

diff --git a/Software/Visual_Studio/PPC/Tango.PPC.Common/Storage/DefaultStorageProvider.cs b/Software/Visual_Studio/PPC/Tango.PPC.Common/Storage/DefaultStorageProvider.cs
new file mode 100644
index 000000000..5714f5dfb
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.Common/Storage/DefaultStorageProvider.cs
@@ -0,0 +1,111 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Tango.Core;
+using Tango.Core.DI;
+using Tango.PPC.Common.Application;
+using Tango.PPC.Common.Threading;
+
+namespace Tango.PPC.Common.Storage
+{
+    /// <summary>
+    /// Represents the default <see cref="IStorageProvider"/>.
+    /// </summary>
+    /// <seealso cref="Tango.Core.ExtendedObject" />
+    /// <seealso cref="Tango.PPC.Common.Storage.IStorageProvider" />
+    public class DefaultStorageProvider : ExtendedObject, IStorageProvider
+    {
+        private Thread _scanThread;
+
+        /// <summary>
+        /// Occurs when a new storage drive has been inserted.
+        /// </summary>
+        public event EventHandler<DriveInfo> StorageConnected;
+
+        /// <summary>
+        /// Occurs when a storage drive has been removed.
+        /// </summary>
+        public event EventHandler<DriveInfo> StorageDisconnected;
+
+        private bool _isConnected;
+        /// <summary>
+        /// Gets a value indicating whether a storage drive is currently inserted.
+        /// </summary>
+        public bool IsConnected
+        {
+            get { return _isConnected; }
+            set { _isConnected = value; RaisePropertyChangedAuto(); }
+        }
+
+        private DriveInfo _drive;
+        /// <summary>
+        /// Gets the inserted storage drive information.
+        /// </summary>
+        public DriveInfo Drive
+        {
+            get { return _drive; }
+            set { _drive = value; RaisePropertyChangedAuto(); }
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="DefaultStorageProvider"/> class.
+        /// </summary>
+        public DefaultStorageProvider(IPPCApplicationManager applicationManager)
+        {
+            var drives = DriveInfo.GetDrives().Where(x => x.DriveType == DriveType.Removable).ToList();
+            
+            if (drives.Count > 0)
+            {
+                IsConnected = true;
+                Drive = drives.FirstOrDefault();
+            }
+
+            applicationManager.ApplicationReady += ApplicationManager_ApplicationReady;
+        }
+
+        /// <summary>
+        /// Handles the ApplicationReady event of the ApplicationManager.
+        /// </summary>
+        /// <param name="sender">The source of the event.</param>
+        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
+        private void ApplicationManager_ApplicationReady(object sender, EventArgs e)
+        {
+            Initialize();
+        }
+
+        private void Initialize()
+        {
+            _scanThread = new Thread(ScanThreadMethod);
+            _scanThread.IsBackground = true;
+            _scanThread.Start();
+        }
+
+        private void ScanThreadMethod()
+        {
+            while (true)
+            {
+                var drives = DriveInfo.GetDrives().Where(x => x.DriveType == DriveType.Removable).ToList();
+
+                if (IsConnected && !drives.Exists(x => x.RootDirectory.FullName == Drive.RootDirectory.FullName))
+                {
+                    StorageDisconnected?.Invoke(this, Drive);
+                    Drive = null;
+                    IsConnected = false;
+                }
+
+                if (!IsConnected && drives.Count > 0)
+                {
+                    Drive = drives.FirstOrDefault();
+                    IsConnected = true;
+                    StorageConnected?.Invoke(this, Drive);
+                }
+
+                Thread.Sleep(5000);
+            }
+        }
+    }
+}
diff --git a/Software/Visual_Studio/PPC/Tango.PPC.Common/Storage/IStorageProvider.cs b/Software/Visual_Studio/PPC/Tango.PPC.Common/Storage/IStorageProvider.cs
new file mode 100644
index 000000000..164cdfe0a
--- /dev/null
+++ b/Software/Visual_Studio/PPC/Tango.PPC.Common/Storage/IStorageProvider.cs
@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Tango.PPC.Common.Storage
+{
+    /// <summary>
+    /// Represents a storage provider responsible of notifying about flash drives connection/disconnection.
+    /// </summary>
+    public interface IStorageProvider
+    {
+        /// <summary>
+        /// Occurs when a new storage drive has been inserted.
+        /// </summary>
+        event EventHandler<DriveInfo> StorageConnected;
+
+        /// <summary>
+        /// Occurs when a storage drive has been removed.
+        /// </summary>
+        event EventHandler<DriveInfo> StorageDisconnected;
+
+        /// <summary>
+        /// Gets a value indicating whether a storage drive is currently inserted.
+        /// </summary>
+        bool IsConnected { get; }
+
+        /// <summary>
+        /// Gets the inserted storage drive information.
+        /// </summary>
+        DriveInfo Drive { get; }
+    }
+}