From 524107e7e400a0cf2a932648687dfccdf591b893 Mon Sep 17 00:00:00 2001
From: Banyc <36535895+Banyc@users.noreply.github.com>
Date: Mon, 7 Dec 2020 00:55:51 +0800
Subject: [PATCH] [desktop] Restore window position

---
 .../MainWindow.xaml.Settings.cs               | 36 +++++++++++++++++++
 .../MainWindow.xaml.cs                        | 17 +++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 src/UnforgettableMemo.WinDesktop/MainWindow.xaml.Settings.cs

diff --git a/src/UnforgettableMemo.WinDesktop/MainWindow.xaml.Settings.cs b/src/UnforgettableMemo.WinDesktop/MainWindow.xaml.Settings.cs
new file mode 100644
index 0000000..2732cae
--- /dev/null
+++ b/src/UnforgettableMemo.WinDesktop/MainWindow.xaml.Settings.cs
@@ -0,0 +1,36 @@
+using System.IO;
+using System.Text.Json;
+
+namespace UnforgettableMemo.WinDesktop
+{
+    public partial class MainWindow
+    {
+        public class MainWindowSettings
+        {
+            public double? TopLocation { get; set; }
+            public double? LeftLocation { get; set; }
+        }
+
+        private MainWindowSettings LoadSettings()
+        {
+            string filePath = System.IO.Path.Combine(this.settingsDirectory, this.settingsFilename);
+            if (!File.Exists(filePath))
+            {
+                return new MainWindowSettings();
+            }
+            string fileText = File.ReadAllText(filePath);
+            MainWindowSettings settings = JsonSerializer.Deserialize<MainWindowSettings>(fileText);
+            return settings;
+        }
+
+        public void SaveSettings(MainWindowSettings settings)
+        {
+            Directory.CreateDirectory(this.settingsDirectory);
+            string fileText = JsonSerializer.Serialize(settings, new JsonSerializerOptions()
+            {
+                WriteIndented = true
+            });
+            File.WriteAllText(System.IO.Path.Combine(this.settingsDirectory, this.settingsFilename), fileText);
+        }
+    }
+}
diff --git a/src/UnforgettableMemo.WinDesktop/MainWindow.xaml.cs b/src/UnforgettableMemo.WinDesktop/MainWindow.xaml.cs
index 2eb25c8..759c105 100644
--- a/src/UnforgettableMemo.WinDesktop/MainWindow.xaml.cs
+++ b/src/UnforgettableMemo.WinDesktop/MainWindow.xaml.cs
@@ -27,11 +27,23 @@ public class MainWindowViewModel
             public Memo DisplayingMemo { get; set; }
         }
 
+        private readonly string settingsDirectory = "desktop";
+        private readonly string settingsFilename = "mainWindowSettings.json";
+
         private readonly MainWindowViewModel viewModel = new MainWindowViewModel();
 
         private MemoScheduler memoScheduler;
         public MainWindow()
         {
+            MainWindowSettings settings = LoadSettings();
+            if (settings.LeftLocation != null)
+            {
+                this.Left = settings.LeftLocation.Value;
+            }
+            if (settings.TopLocation != null)
+            {
+                this.Top = settings.TopLocation.Value;
+            }
             InitializeComponent();
         }
 
@@ -84,6 +96,11 @@ private void btnReview_Click(object sender, RoutedEventArgs e)
 
         private void btnExit_Click(object sender, RoutedEventArgs e)
         {
+            SaveSettings(new MainWindowSettings()
+            {
+                LeftLocation = this.Left,
+                TopLocation = this.Top
+            });
             this.Close();
         }