Adiciona importação de Excel e melhorias gerais

Adicionada funcionalidade para importar contatos de arquivos Excel
usando a biblioteca ClosedXML, incluindo o comando
`ImportExcelCommand` e o método `ImportExcelAsync` na classe
`MainWindowViewModel`. Ajustado o layout da interface gráfica
para incluir um botão "Importar".

Outras alterações incluem:
- Adição de pacotes ao projeto (`ClosedXML`, `Dapper`, etc.).
- Ajustes no cálculo de `gridWidth` e `gridHeight` em `ImageService`.
- Alteração do valor da constante `OverlayOffset` em `ImageService`.
- Refatoração do método `SaveBitmap` para tratamento de exceções.
- Correção na substituição de extensão ao salvar imagens.
- Reorganização de inicialização de coleções em `MainWindowViewModel`.

Essas mudanças melhoram a funcionalidade e a consistência do projeto.

BackgroundBuilder.csproj

@@ -15,6 +15,7 @@
 	  <Content Include="smart.ico" />
 	</ItemGroup>
 	<ItemGroup>
+		<PackageReference Include="ClosedXML" Version="0.105.0" />
 		<PackageReference Include="Dapper" Version="2.1.66" />
 		<PackageReference Include="Microsoft.Extensions.Configuration" Version="10.0.0-preview.3.25171.5" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="10.0.0-preview.3.25171.5" />

Services/ImageService.cs

@@ -11,7 +11,7 @@ namespace BackgroundBuilder.Services
     {
 
         // no longer injected — use a private constant
-        private static readonly Thickness OverlayOffset = new(10, 58, 10, 58);
+        private static readonly Thickness OverlayOffset = new(10, 53, 10, 53);
 
         public async Task<BitmapImage> LoadAsync(string path)
         {
@@ -88,8 +88,8 @@ namespace BackgroundBuilder.Services
                 x = width - scaledWidth - offset.Right;
                 y = height - scaledHeight - offset.Bottom;
 
-                gridWidth = scaledWidth + offset.Right;
+                gridWidth = scaledWidth;
-                gridHeight = scaledHeight + offset.Bottom;
+                gridHeight = scaledHeight;
             }
             else
             {
@@ -161,6 +161,8 @@ namespace BackgroundBuilder.Services
         /// Encodes the given bitmap as PNG and writes it to disk.
         /// </summary>
         private static void SaveBitmap(RenderTargetBitmap bitmap, string path)
+        {
+            try
             {
                 var directory = Path.GetDirectoryName(path);
                 if (!Directory.Exists(directory))
@@ -173,5 +175,10 @@ namespace BackgroundBuilder.Services
                 encoder.Frames.Add(BitmapFrame.Create(bitmap));
                 encoder.Save(fs);
             }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"Erro ao salvar a imagem:\n{ex.Message}\n\nCaminho: {path}");
+            }
+        }
     }
 }

ViewModels/MainWindowViewModel.cs

@@ -15,6 +15,7 @@ using BackgroundBuilder.Models;
 using BackgroundBuilder.Repositories;
 using BackgroundBuilder.Services;
 using BackgroundBuilder.Utils;
+using ClosedXML.Excel;
 using Microsoft.Win32;
 
 namespace BackgroundBuilder.ViewModels
@@ -29,8 +30,8 @@ namespace BackgroundBuilder.ViewModels
         public ObservableCollection<Contato> Comando { get; } = [];
         public ObservableCollection<Contato> Aniversarios { get; } = [];
 
-        public ObservableCollection<Contato> ContatosSemCMDFirstHalf { get; } = new();
+        public ObservableCollection<Contato> ContatosSemCMDFirstHalf { get; } = [];
-        public ObservableCollection<Contato> ContatosSemCMDSecondHalf { get; } = new();
+        public ObservableCollection<Contato> ContatosSemCMDSecondHalf { get; } = [];
 
 
         private Contato? _selectedContato;
@@ -60,6 +61,7 @@ namespace BackgroundBuilder.ViewModels
         public ICommand RefreshCommand { get; }
         public RelayCommand UpdateCommand { get; }
         public RelayCommand ExportImageCommand { get; }
+        public RelayCommand ImportExcelCommand { get; }
 
         public MainWindowViewModel(
             IContatoRepository repo,
@@ -78,6 +80,7 @@ namespace BackgroundBuilder.ViewModels
             RefreshCommand = new RelayCommand(async _ => await LoadRawAsync());
             UpdateCommand = new RelayCommand(async _ => await UpdateAsync(), _ => SelectedContatos != null);
             ExportImageCommand = new RelayCommand(async _ => await RenderImageAsync(), _ => BackgroundImage != null && OverlayElement != null);
+            ImportExcelCommand = new RelayCommand(async _ => await ImportExcelAsync());
         }
 
         public void RefreshTaskbarInfo()
@@ -161,7 +164,7 @@ namespace BackgroundBuilder.ViewModels
                 && OverlayElement is FrameworkElement overlay
                 && BackgroundImage is BitmapImage bg)
             {
-                await _imageService.SaveAsync(overlay, bg, dlg.FileName, dlg.FileName.Replace(".", "_1."));
+                await _imageService.SaveAsync(overlay, bg, dlg.FileName, dlg.FileName.Replace(".png", "_1.png"));
             }
         }
 
@@ -239,5 +242,52 @@ namespace BackgroundBuilder.ViewModels
                     ContatosSemCMDSecondHalf.Add(list[i]);
             }
         }
+
+        private async Task ImportExcelAsync()
+        {
+            var openFileDialog = new OpenFileDialog
+            {
+                Filter = "Excel Files|*.xlsx;*.xls"
+            };
+            if (openFileDialog.ShowDialog() != true)
+                return;
+
+            var filePath = openFileDialog.FileName;
+            var ramais = new List<Contato>();
+
+            using (var workbook = new XLWorkbook(filePath))
+            {
+                var ws = workbook.Worksheets.First();
+                var table = ws.Cell("B2").CurrentRegion;
+                
+                foreach (var row in table.Rows().Skip(1)) // Skip header
+                {
+                    var contato = new Contato
+                    {
+                        Ramal = row.Cell(3).GetString(),
+                        Nome = row.Cell(1).GetString(),
+                        Email = row.Cell(2).GetString(),
+                        Area = row.Cell(4).GetString(),
+                        IsComando = false
+                    };
+                    ramais.Add(contato);
+                }
+
+                table = ws.Cell("G2").CurrentRegion;
+
+                foreach (var row in table.Rows().Skip(1)) // Skip header
+                {
+                    ramais.Find(x => x.Nome == row.Cell(1).GetString()).Aniversario = row.Cell(2).GetDateTime();
+                }
+
+            }
+
+            foreach (var contato in ramais)
+            {
+                await _repo.InsertUpdateAsync(contato);
+            }
+
+            await LoadRawAsync(); // Refresh UI
+        }
     }
 }

Views/MainWindow.xaml

@@ -135,6 +135,7 @@
                 <ColumnDefinition Width="Auto"/>
                 <ColumnDefinition Width="Auto"/>
                 <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="Auto"/>
             </Grid.ColumnDefinitions>
             <!-- Row 2: Image-->
             <Rectangle Grid.Column="0"
@@ -156,16 +157,23 @@
                      Padding="20,3,20,3"
                      Height="40"
                      Margin="5"/>
+            <Button Content="Importar"
+                    Command="{Binding ImportExcelCommand}"
+                    Grid.Column="3"
+                    FontWeight="Bold"
+                    Padding="20,3,20,3"
+                    Height="40"
+                    Margin="5"/>
             <Button Content="Recarregar Contatos"
                     Command="{Binding RefreshCommand}"
-                    Grid.Column="3"
+                    Grid.Column="4"
                     FontWeight="Medium"
                     Padding="5"
                     Height="40"
                     Margin="5"/>
             <Button Content="+ Nova linha" 
                     Command="{Binding AddCommand}" 
-                    Grid.Column = "4"
+                    Grid.Column = "5"
                     Foreground="Green"
                     FontWeight="Medium"
                     Padding="5"
@@ -173,7 +181,7 @@
                     Margin="5"/>
             <Button Content="- Deletar selecionada" 
                     Command="{Binding DeleteCommand}"
-                    Grid.Column = "5"
+                    Grid.Column = "6"
                     Foreground="Red" 
                     FontWeight="Medium"
                     Padding="5"
@@ -182,7 +190,7 @@
             <Button Content="Salvar dados" 
                     Command="{Binding UpdateCommand}"
                     CommandParameter="RawGrid"
-                    Grid.Column = "6" 
+                    Grid.Column = "7" 
                     FontWeight="Medium"
                     Padding="5"
                     Height="40"
@@ -190,7 +198,7 @@
             <Button Content="Criar Imagem -->" 
                     Command="{Binding ExportImageCommand}" 
                     CommandParameter="MainGrid"
-                    Grid.Column = "7"
+                    Grid.Column = "8"
                     Foreground="Blue"
                     FontWeight="Bold"
                     Padding="5"