Add convert specified files to PDF.

Converters/FileNameToCanConvertCommandVisible.cs

@@ -0,0 +1,31 @@
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Data;
+using System;
+using System.Linq;
+
+namespace SimpleList.Converters
+{
+    public class FileNameToCanConvertCommandVisible : IValueConverter
+    {
+        public static readonly FileNameToCanConvertCommandVisible Instance = new();
+        public object Convert(object value, Type targetType, object parameter, string language)
+        {
+            string[] allowedExtensions = { ".csv", ".doc", ".docx", ".odp", ".ods", ".odt", ".pot", ".potm", ".potx", ".pps", ".ppsx", ".ppsxm", ".ppt", ".pptm", ".pptx", ".rtf", ".xls", ".xlsx" };
+            if (value is string fileName)
+            {
+                string fileExtension = System.IO.Path.GetExtension(fileName).ToLower();
+                if (allowedExtensions.Contains(fileExtension))
+                {
+                    return Visibility.Visible;
+                }
+            }
+            return Visibility.Collapsed;
+        }
+
+
+        public object ConvertBack(object value, Type targetType, object parameter, string language)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

Services/OneDrive.cs

@@ -1,5 +1,6 @@
 using CommunityToolkit.Authentication;
 using CommunityToolkit.Graph.Extensions;
+using Downloader;
 using Microsoft.Graph;
 using System;
 using System.Collections.Generic;
@@ -110,6 +111,19 @@ public async Task<Quota> GetStorageInfo()
             return drive.Quota;
         }
 
+        public async Task ConvertFileFormat(string itemId, StorageFile file, string format = "pdf")
+        {
+            GraphServiceClient graphClient = _provider.GetClient();
+            List<QueryOption> queryOptions = new()
+            {
+                new QueryOption("format", format)
+            };
+            Stream result = await graphClient.Me.Drive.Items[itemId].Content.Request(queryOptions).GetAsync();
+            using var fileStream = System.IO.File.Create(file.Path);
+            result.Seek(0, SeekOrigin.Begin);
+            await result.CopyToAsync(fileStream);
+        }
+
         public async void Login()
         {
             try

SimpleList.csproj

@@ -52,6 +52,7 @@
     <None Remove="Pages\HomePage.xaml" />
     <None Remove="Pages\SettingPage.xaml" />
     <None Remove="Pages\TaskManagerPage.xaml" />
+    <None Remove="Views\ConvertFileFormatView.xaml" />
     <None Remove="Views\CreateFolderView.xaml" />
     <None Remove="Views\FileView.xaml" />
     <None Remove="Views\PropertyView.xaml" />
@@ -102,6 +103,9 @@
       <Pack>True</Pack>
       <PackagePath>\</PackagePath>
     </None>
+    <Page Update="Views\ConvertFileFormatView.xaml">
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
   </ItemGroup>
   <ItemGroup>
     <Page Update="Views\ShareFileView.xaml">

ViewModels/ConvertFileFormatViewModel.cs

@@ -0,0 +1,59 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.DependencyInjection;
+using SimpleList.Services;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Windows.Storage.Pickers;
+using Windows.Storage;
+using WinRT.Interop;
+using Microsoft.UI.Xaml;
+using CommunityToolkit.Mvvm.Input;
+using System.IO;
+using System.Linq;
+
+namespace SimpleList.ViewModels
+{
+    public class ConvertFileFormatViewModel : ObservableObject
+    {
+        public ConvertFileFormatViewModel(FileViewModel file)
+        {
+            _file = file;
+            ConvertFileCommand = new AsyncRelayCommand(ConvertFileFormat);
+        }
+
+        public async Task ConvertFileFormat()
+        {
+            Window _downloadPathSelectWindow = new();
+            IntPtr hwnd = WindowNative.GetWindowHandle(_downloadPathSelectWindow);
+            FileSavePicker savePicker = new()
+            {
+                SuggestedStartLocation = PickerLocationId.Downloads
+            };
+            savePicker.FileTypeChoices.Add("PDF Document", new List<string>() { ".pdf" });
+            savePicker.SuggestedFileName = Path.GetFileNameWithoutExtension(_file.Name);
+            InitializeWithWindow.Initialize(savePicker, hwnd);
+            StorageFile file = await savePicker.PickSaveFileAsync();
+            SavedFilePath = file?.Path;
+
+            string fileExtension = Path.GetExtension(_file.Name).ToLower();
+
+            if (allowedExtensions.Contains(fileExtension))
+            {
+                await drive.ConvertFileFormat(_file.Id, file);
+            }
+        }
+
+        private readonly FileViewModel _file;
+        private readonly OneDrive drive = Ioc.Default.GetService<OneDrive>();
+        private static readonly string[] allowedExtensions = { ".csv", ".doc", ".docx", ".odp", ".ods", ".odt", ".pot", ".potm", ".potx", ".pps", ".ppsx", ".ppsxm", ".ppt", ".pptm", ".pptx", ".rtf", ".xls", ".xlsx" };
+        private string _selectedFormat = "pdf";
+        private string _savedFilePath;
+
+        public IEnumerable<string> TargetFormats => new List<string> { "pdf" };
+        public string SelectedFormat { get => _selectedFormat; set => SetProperty(ref _selectedFormat, value); }
+        public string SavedFilePath { get => _savedFilePath; set => SetProperty(ref _savedFilePath, value); }
+        public string FormattedExtensions => string.Join(", ", allowedExtensions.Select(ext => ext.TrimStart('.')));
+        public AsyncRelayCommand ConvertFileCommand { get; }
+    }
+}

Views/ConvertFileFormatView.xaml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ContentDialog
+    x:Class="SimpleList.Views.ConvertFileFormatView"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:vm="using:SimpleList.ViewModels"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d"
+    d:DataContext="{x:Bind vm:ConvertFileFormatViewModel}"
+    Title="Convert File Format"
+    PrimaryButtonText="Convert"
+    DefaultButton="Primary"
+    CloseButtonText="Cancel">
+
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition />
+            <RowDefinition />
+            <RowDefinition />
+        </Grid.RowDefinitions>
+
+        <TextBlock Margin="0 0 0 10" TextWrapping="Wrap">
+            <Run Text="The currently supported file formats include " />
+            <Run Text="{Binding FormattedExtensions}" />
+        </TextBlock>
+
+        <RelativePanel Grid.Row="1">
+            <TextBlock Text="Target Format" FontWeight="Bold"  RelativePanel.AlignLeftWithPanel="True" />
+            <ComboBox ItemsSource="{Binding TargetFormats}" SelectedIndex="0" SelectedItem="{Binding SelectedFormat, Mode=TwoWay}"  RelativePanel.AlignRightWithPanel="True" />
+        </RelativePanel>
+
+        <RelativePanel Grid.Row="2">
+            <TextBlock Text="Save Path" FontWeight="Bold" RelativePanel.AlignLeftWithPanel="True" />
+            <StackPanel Orientation="Horizontal"  RelativePanel.AlignRightWithPanel="True">
+                <TextBox Text="{Binding SavedFilePath}" IsEnabled="False" />
+                <Button Content="Browser" Command="{Binding ConvertFileCommand}" />
+            </StackPanel>
+        </RelativePanel>
+    </Grid>
+</ContentDialog>

Views/ConvertFileFormatView.xaml.cs

@@ -0,0 +1,12 @@
+using Microsoft.UI.Xaml.Controls;
+
+namespace SimpleList.Views
+{
+    public sealed partial class ConvertFileFormatView : ContentDialog
+    {
+        public ConvertFileFormatView()
+        {
+            InitializeComponent();
+        }
+    }
+}

Views/FileView.xaml

@@ -5,6 +5,7 @@
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:vm="using:SimpleList.ViewModels"
     xmlns:converter="using:SimpleList.Converters"
+    xmlns:converters="using:CommunityToolkit.WinUI.UI.Converters"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     d:DataContext="{x:Bind vm:FileViewModel}"
@@ -13,6 +14,8 @@
     <UserControl.Resources>
         <converter:FileSizeConverter x:Key="FileSizeConverter" />
         <converter:DateTimeOffsetToStringConverter x:Key="DateTimeOffsetToStringConverter" />
+        <converter:FileNameToCanConvertCommandVisible x:Key="FileNameToCanConvertCommandVisible" />
+        <converters:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter" />
     </UserControl.Resources>
 
     <Grid DoubleTapped="OpenFolder">
@@ -21,6 +24,7 @@
                 <MenuFlyoutItem Text="Open" Command="{Binding Cloud.OpenFolderCommand}" CommandParameter="{Binding}" IsEnabled="{Binding IsFolder}" />
                 <MenuFlyoutItem Text="Download" Command="{Binding DownloadFileCommand}" CommandParameter="{Binding Id}" IsEnabled="{Binding IsFile}" />
                 <MenuFlyoutItem Text="Delete" Command="{Binding DeleteFileCommand}" CommandParameter="{Binding Id}" />
+                <MenuFlyoutItem Text="Convert" Click="ShowConverFiletDialogAsync" Visibility="{Binding Name, Converter={StaticResource FileNameToCanConvertCommandVisible}}" />
                 <MenuFlyoutItem Text="Share" Click="ShowShareFileDialogAsync" />
                 <MenuFlyoutItem Text="Rename" Click="ShowRenameFileDialogAsync" />
                 <MenuFlyoutItem Text="Property" Click="ShowPropertyDialogAsync" />

Views/FileView.xaml.cs

@@ -56,5 +56,19 @@ private void OpenFolder(object sender, Microsoft.UI.Xaml.Input.DoubleTappedRoute
                 viewModel.Cloud.OpenFolder(viewModel);
             }
         }
+
+        private async void ShowConverFiletDialogAsync(object sender, RoutedEventArgs e)
+        {
+            FileViewModel viewModel = DataContext as FileViewModel;
+            if (viewModel.IsFile)
+            {
+                ConvertFileFormatView dialog = new()
+                {
+                    XamlRoot = XamlRoot,
+                    DataContext = new ConvertFileFormatViewModel(viewModel)
+                };
+                await dialog.ShowAsync();
+            }
+        }
     }
 }