From 1e6f8c0b9f6ab6e46e712b6851faf17092d5b118 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gerard=20Gasc=C3=B3n?=
 <52170489+GerardGascon@users.noreply.github.com>
Date: Fri, 28 Jun 2024 14:23:17 +0200
Subject: [PATCH] refactor: extract input sender to an interface for multiple
 platform support

---
 .../.idea/workspace.xml                       |  4 ++
 SlidePresenter/InputSender/IInputSender.cs    |  6 +++
 .../InputSender/WindowsInputSender.cs         | 47 +++++++++++++++++
 SlidePresenter/SlideSwitcher.cs               | 51 ++-----------------
 4 files changed, 61 insertions(+), 47 deletions(-)
 create mode 100644 SlidePresenter/InputSender/IInputSender.cs
 create mode 100644 SlidePresenter/InputSender/WindowsInputSender.cs

diff --git a/.idea/.idea.SwitchSlidePresenter/.idea/workspace.xml b/.idea/.idea.SwitchSlidePresenter/.idea/workspace.xml
index 6d4b518..41f33f2 100644
--- a/.idea/.idea.SwitchSlidePresenter/.idea/workspace.xml
+++ b/.idea/.idea.SwitchSlidePresenter/.idea/workspace.xml
@@ -37,11 +37,15 @@
     <setting file="file://$PROJECT_DIR$/SlidePresenter/Program.cs" root0="FORCE_HIGHLIGHTING" />
   </component>
   <component name="MetaFilesCheckinStateConfiguration" checkMetaFiles="true" />
+  <component name="ProblemsViewState">
+    <option name="selectedTabId" value="Toolset" />
+  </component>
   <component name="ProjectColorInfo">{
   &quot;associatedIndex&quot;: 6
 }</component>
   <component name="ProjectId" id="2htCW7BWCLo4IJC4dn1HIEGkg1I" />
   <component name="ProjectLevelVcsManager" settingsEditedManually="true">
+    <OptionsSetting value="false" id="Update" />
     <ConfirmationsSetting value="2" id="Add" />
   </component>
   <component name="ProjectViewState">
diff --git a/SlidePresenter/InputSender/IInputSender.cs b/SlidePresenter/InputSender/IInputSender.cs
new file mode 100644
index 0000000..e0bce4e
--- /dev/null
+++ b/SlidePresenter/InputSender/IInputSender.cs
@@ -0,0 +1,6 @@
+namespace SwitchSlidePresenter.InputSender;
+
+public interface IInputSender {
+	void NextSlide();
+	void PreviousSlide();
+}
\ No newline at end of file
diff --git a/SlidePresenter/InputSender/WindowsInputSender.cs b/SlidePresenter/InputSender/WindowsInputSender.cs
new file mode 100644
index 0000000..bcde5ed
--- /dev/null
+++ b/SlidePresenter/InputSender/WindowsInputSender.cs
@@ -0,0 +1,47 @@
+using System.Runtime.InteropServices;
+using Win32Api;
+
+namespace SwitchSlidePresenter.InputSender;
+
+public class WindowsInputSender : IInputSender {
+	private const uint INPUT_KEYBOARD = 1;
+	private const ushort VK_NEXT = 0x22;
+	private const ushort VK_PRIOR = 0x21;
+	private const uint KEYEVENTF_KEYDOWN = 0x0000;
+	private const uint KEYEVENTF_KEYUP = 0x0002;
+
+	public void NextSlide() => SimulateKeyPress(VK_NEXT);
+	public void PreviousSlide() => SimulateKeyPress(VK_PRIOR);
+
+	private static void SimulateKeyPress(ushort keyCode) {
+		Input[] inputs = new Input[2];
+
+		inputs[0] = new Input {
+			type = INPUT_KEYBOARD,
+			u = new InputUnion {
+				ki = new KeyboardInput {
+					wVk = keyCode,
+					wScan = 0,
+					dwFlags = KEYEVENTF_KEYDOWN,
+					time = 0,
+					dwExtraInfo = IntPtr.Zero
+				}
+			}
+		};
+
+		inputs[1] = new Input {
+			type = INPUT_KEYBOARD,
+			u = new InputUnion {
+				ki = new KeyboardInput {
+					wVk = keyCode,
+					wScan = 0,
+					dwFlags = KEYEVENTF_KEYUP,
+					time = 0,
+					dwExtraInfo = IntPtr.Zero
+				}
+			}
+		};
+
+		Win32Api.Win32Api.SendInput((uint)inputs.Length, inputs, Marshal.SizeOf(typeof(Input)));
+	}
+}
\ No newline at end of file
diff --git a/SlidePresenter/SlideSwitcher.cs b/SlidePresenter/SlideSwitcher.cs
index d81adae..004c51a 100644
--- a/SlidePresenter/SlideSwitcher.cs
+++ b/SlidePresenter/SlideSwitcher.cs
@@ -1,16 +1,10 @@
-using System.Runtime.InteropServices;
-using Win32Api;
+using SwitchSlidePresenter.InputSender;
 
 namespace SwitchSlidePresenter;
 
 public class SlideSwitcher : IDisposable {
 	private readonly IGamepadReader? _reader;
-
-	private const uint INPUT_KEYBOARD = 1;
-	private const ushort VK_NEXT = 0x22;
-	private const ushort VK_PRIOR = 0x21;
-	private const uint KEYEVENTF_KEYDOWN = 0x0000;
-	private const uint KEYEVENTF_KEYUP = 0x0002;
+	private readonly IInputSender _inputSender = new WindowsInputSender();
 
 	public SlideSwitcher(IGamepadReader? reader) {
 		_reader = reader;
@@ -23,43 +17,6 @@ public class SlideSwitcher : IDisposable {
 		_reader.PrevSlide -= PreviousSlide;
 	}
 
-	private static void NextSlide() {
-		SimulateKeyPress(VK_NEXT);
-	}
-
-	private static void PreviousSlide() {
-		SimulateKeyPress(VK_PRIOR);
-	}
-
-	private static void SimulateKeyPress(ushort keyCode) {
-		Input[] inputs = new Input[2];
-
-		inputs[0] = new Input {
-			type = INPUT_KEYBOARD,
-			u = new InputUnion {
-				ki = new KeyboardInput {
-					wVk = keyCode,
-					wScan = 0,
-					dwFlags = KEYEVENTF_KEYDOWN,
-					time = 0,
-					dwExtraInfo = IntPtr.Zero
-				}
-			}
-		};
-
-		inputs[1] = new Input {
-			type = INPUT_KEYBOARD,
-			u = new InputUnion {
-				ki = new KeyboardInput {
-					wVk = keyCode,
-					wScan = 0,
-					dwFlags = KEYEVENTF_KEYUP,
-					time = 0,
-					dwExtraInfo = IntPtr.Zero
-				}
-			}
-		};
-
-		Win32Api.Win32Api.SendInput((uint)inputs.Length, inputs, Marshal.SizeOf(typeof(Input)));
-	}
+	private void NextSlide() => _inputSender.NextSlide();
+	private void PreviousSlide() => _inputSender.PreviousSlide();
 }
\ No newline at end of file