MainWindow.xaml

<Window x:Class="EmailHeaderAnalyzer.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:EmailHeaderAnalyzer"
        mc:Ignorable="d"
        Title="Email Header Analyzer"
        Icon="pack://application:,,,/AppIcon.ico"
        Height="800" Width="1200"
        MinHeight="600" MinWidth="900"
        WindowStartupLocation="CenterScreen"
        Background="{DynamicResource ThemeBackground}"
        AllowDrop="True"
        Drop="Window_Drop"
        DragOver="Window_DragOver">

    <Window.Resources>
        <!-- Modern Button Style -->
        <Style x:Key="ModernButton" TargetType="Button">
            <Setter Property="Background" Value="#0078D4"/>
            <Setter Property="Foreground" Value="White"/>
            <Setter Property="FontSize" Value="14"/>
            <Setter Property="FontWeight" Value="Medium"/>
            <Setter Property="Padding" Value="12,8"/>
            <Setter Property="BorderThickness" Value="0"/>
            <Setter Property="Cursor" Value="Hand"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                CornerRadius="4">
                            <ContentPresenter HorizontalAlignment="Center"
                                            VerticalAlignment="Center"
                                            Margin="{TemplateBinding Padding}"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter Property="Background" Value="#106EBE"/>
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter Property="Background" Value="#005A9E"/>
                            </Trigger>
                            <Trigger Property="IsEnabled" Value="False">
                                <Setter Property="Background" Value="#CCCCCC"/>
                                <Setter Property="Foreground" Value="#666666"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <!-- Secondary Button Style -->
        <Style x:Key="SecondaryButton" TargetType="Button">
            <Setter Property="Background" Value="{DynamicResource ThemeWindowBackground}"/>
            <Setter Property="Foreground" Value="{DynamicResource ThemeTextColor}"/>
            <Setter Property="FontSize" Value="14"/>
            <Setter Property="Padding" Value="12,8"/>
            <Setter Property="BorderBrush" Value="{DynamicResource ThemeBorderColor}"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="Cursor" Value="Hand"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                CornerRadius="4">
                            <ContentPresenter HorizontalAlignment="Center"
                                            VerticalAlignment="Center"
                                            Margin="{TemplateBinding Padding}"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter Property="Background" Value="{DynamicResource ThemeHoverBackground}"/>
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter Property="Background" Value="{DynamicResource ThemePressedBackground}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <!-- Copy Button Style -->
        <Style x:Key="CopyButton" TargetType="Button">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="BorderThickness" Value="0"/>
            <Setter Property="Width" Value="20"/>
            <Setter Property="Height" Value="20"/>
            <Setter Property="Cursor" Value="Hand"/>
            <Setter Property="ToolTip" Value="Copy to clipboard"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                CornerRadius="2">
                            <ContentPresenter HorizontalAlignment="Center"
                                            VerticalAlignment="Center"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter Property="Background" Value="{DynamicResource ThemeHoverBackground}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <!-- ComboBox Style -->
        <Style x:Key="ThemedComboBox" TargetType="ComboBox">
            <Setter Property="Background" Value="{DynamicResource ThemeWindowBackground}"/>
            <Setter Property="Foreground" Value="{DynamicResource ThemeTextColor}"/>
            <Setter Property="BorderBrush" Value="{DynamicResource ThemeBorderColor}"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="Padding" Value="5,3"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ComboBox">
                        <Grid>
                            <ToggleButton Name="ToggleButton"
                                          Grid.Column="2"
                                          Focusable="false"
                                          IsChecked="{Binding Path=IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
                                          ClickMode="Press">
                                <ToggleButton.Template>
                                    <ControlTemplate TargetType="ToggleButton">
                                        <Grid>
                                            <Grid.ColumnDefinitions>
                                                <ColumnDefinition />
                                                <ColumnDefinition Width="20" />
                                            </Grid.ColumnDefinitions>
                                            <Border x:Name="Border"
                                                    Grid.ColumnSpan="2"
                                                    Background="{DynamicResource ThemeWindowBackground}"
                                                    BorderBrush="{DynamicResource ThemeBorderColor}"
                                                    BorderThickness="1" />
                                            <Path x:Name="Arrow"
                                                  Grid.Column="1"
                                                  HorizontalAlignment="Center"
                                                  VerticalAlignment="Center"
                                                  Data="M 0 0 L 4 4 L 8 0 Z"
                                                  Fill="{DynamicResource ThemeTextColor}" />
                                        </Grid>
                                    </ControlTemplate>
                                </ToggleButton.Template>
                            </ToggleButton>
                            <ContentPresenter Name="ContentSite"
                                              IsHitTestVisible="False"
                                              Content="{TemplateBinding SelectionBoxItem}"
                                              ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
                                              ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}"
                                              Margin="3,3,23,3"
                                              VerticalAlignment="Center"
                                              HorizontalAlignment="Left" />
                            <Popup Name="Popup"
                                   Placement="Bottom"
                                   IsOpen="{TemplateBinding IsDropDownOpen}"
                                   AllowsTransparency="True"
                                   Focusable="False"
                                   PopupAnimation="Slide">
                                <Grid Name="DropDown"
                                      SnapsToDevicePixels="True"
                                      MinWidth="{TemplateBinding ActualWidth}"
                                      MaxHeight="{TemplateBinding MaxDropDownHeight}">
                                    <Border x:Name="DropDownBorder"
                                            Background="{DynamicResource ThemeWindowBackground}"
                                            BorderBrush="{DynamicResource ThemeBorderColor}"
                                            BorderThickness="1" />
                                    <ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
                                        <StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
                                    </ScrollViewer>
                                </Grid>
                            </Popup>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Setter Property="ItemContainerStyle">
                <Setter.Value>
                    <Style TargetType="ComboBoxItem">
                        <Setter Property="Background" Value="Transparent"/>
                        <Setter Property="Foreground" Value="{DynamicResource ThemeTextColor}"/>
                        <Setter Property="BorderThickness" Value="0"/>
                        <Setter Property="Padding" Value="5,3"/>
                        <Setter Property="Template">
                            <Setter.Value>
                                <ControlTemplate TargetType="ComboBoxItem">
                                    <Border Name="Border"
                                            Padding="2"
                                            Background="{TemplateBinding Background}"
                                            SnapsToDevicePixels="true">
                                        <ContentPresenter />
                                    </Border>
                                    <ControlTemplate.Triggers>
                                        <Trigger Property="IsHighlighted" Value="true">
                                            <Setter TargetName="Border" Property="Background" Value="{DynamicResource ThemeHoverBackground}"/>
                                        </Trigger>
                                    </ControlTemplate.Triggers>
                                </ControlTemplate>
                            </Setter.Value>
                        </Setter>
                    </Style>
                </Setter.Value>
            </Setter>
        </Style>

        <!-- TabControl Style -->
        <Style x:Key="ThemedTabControl" TargetType="TabControl">
            <Setter Property="Background" Value="{DynamicResource ThemeBackground}"/>
            <Setter Property="BorderBrush" Value="{DynamicResource ThemeBorderColor}"/>
            <Setter Property="Foreground" Value="{DynamicResource ThemeTextColor}"/>
        </Style>

        <!-- TabItem Style -->
        <Style x:Key="ThemedTabItem" TargetType="TabItem">
            <Setter Property="Background" Value="{DynamicResource ThemeWindowBackground}"/>
            <Setter Property="Foreground" Value="{DynamicResource ThemeTextColor}"/>
            <Setter Property="BorderBrush" Value="{DynamicResource ThemeBorderColor}"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="TabItem">
                        <Grid>
                            <Border Name="Border"
                                    Background="{DynamicResource ThemeWindowBackground}"
                                    BorderBrush="{DynamicResource ThemeBorderColor}"
                                    BorderThickness="1,1,1,0"
                                    CornerRadius="4,4,0,0"
                                    Margin="0,0,2,0">
                                <ContentPresenter x:Name="ContentSite"
                                                  VerticalAlignment="Center"
                                                  HorizontalAlignment="Center"
                                                  ContentSource="Header"
                                                  Margin="12,2,12,2"/>
                            </Border>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsSelected" Value="True">
                                <Setter TargetName="Border" Property="Background" Value="{DynamicResource ThemeBackground}"/>
                                <Setter TargetName="Border" Property="BorderThickness" Value="1,1,1,0"/>
                                <Setter TargetName="Border" Property="Margin" Value="0,0,2,-1"/>
                                <Setter Property="Foreground" Value="{DynamicResource ThemeTextColor}"/>
                            </Trigger>
                            <Trigger Property="IsSelected" Value="False">
                                <Setter TargetName="Border" Property="Background" Value="{DynamicResource ThemeWindowBackground}"/>
                                <Setter Property="Foreground" Value="{DynamicResource ThemeSecondaryTextColor}"/>
                            </Trigger>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter TargetName="Border" Property="Background" Value="{DynamicResource ThemeHoverBackground}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <!-- Expander Style -->
        <Style x:Key="ModernExpander" TargetType="Expander">
            <Setter Property="Background" Value="{DynamicResource ThemeWindowBackground}"/>
            <Setter Property="BorderBrush" Value="{DynamicResource ThemeBorderColor}"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="Margin" Value="0,5"/>
            <Setter Property="Padding" Value="10"/>
        </Style>
    </Window.Resources>

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <!-- Header Section -->
        <Border Grid.Row="0" Background="{DynamicResource ThemeBackground}" BorderBrush="{DynamicResource ThemeBorderColor}" BorderThickness="0,0,0,1">
            <StackPanel Margin="20,15">
                <DockPanel>
                    <TextBlock Text="Email Header Analyzer" FontSize="24" FontWeight="SemiBold" Foreground="{DynamicResource ThemeTextColor}"/>
                    <TextBlock DockPanel.Dock="Right" HorizontalAlignment="Right" VerticalAlignment="Center">
                        <Hyperlink Click="AboutLink_Click" Foreground="{DynamicResource ThemeSecondaryTextColor}">v1.0.0 — About</Hyperlink>
                    </TextBlock>
                </DockPanel>

                <!-- Tab Control for Input Mode -->
                <TabControl x:Name="tabInput" Margin="0,15,0,0" Style="{StaticResource ThemedTabControl}">
                    <!-- File Input Tab -->
                    <TabItem Header="File Input" Style="{StaticResource ThemedTabItem}">
                        <Grid Margin="0,10,0,0">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="*"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="Auto"/>
                            </Grid.ColumnDefinitions>

                            <Border x:Name="dropZone"
                                    Grid.Column="0"
                                    BorderBrush="{DynamicResource ThemeBorderColor}"
                                    BorderThickness="1"
                                    CornerRadius="4"
                                    Background="{DynamicResource ThemeBackground}"
                                    AllowDrop="True"
                                    Drop="DropZone_Drop"
                                    DragEnter="DropZone_DragEnter"
                                    DragLeave="DropZone_DragLeave"
                                    DragOver="DropZone_DragOver">
                                <Grid>
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition Width="*"/>
                                        <ColumnDefinition Width="Auto"/>
                                    </Grid.ColumnDefinitions>
                                    <TextBox x:Name="txtFilePath"
                                             Grid.Column="0"
                                             VerticalAlignment="Center"
                                             Padding="10,8"
                                             BorderThickness="0"
                                             IsReadOnly="True"
                                             Background="Transparent"
                                             Foreground="{DynamicResource ThemeSecondaryTextColor}"
                                             Text="Select an email file (.msg or .eml) or drag &amp; drop here..."/>
                                    <Button Grid.Column="1"
                                            x:Name="btnBrowse"
                                            Content="Browse..."
                                            Style="{StaticResource SecondaryButton}"
                                            Margin="5"
                                            Click="BtnBrowse_Click"/>
                                </Grid>
                            </Border>

                            <Button Grid.Column="1"
                                    x:Name="btnAnalyzeFile"
                                    Content="Analyze"
                                    Style="{StaticResource ModernButton}"
                                    Margin="10,0,0,0"
                                    MinWidth="100"
                                    IsEnabled="False"
                                    Click="BtnAnalyze_Click"/>

                            <StackPanel Grid.Column="2" Orientation="Horizontal" Margin="20,0,0,0">
                                <CheckBox x:Name="chkVerbose"
                                          Content="Show All Headers"
                                          VerticalAlignment="Center"
                                          Margin="0,0,15,0"
                                          Foreground="{DynamicResource ThemeTextColor}"
                                          IsChecked="True"/>
                                <CheckBox x:Name="chkJsonOutput"
                                          Content="JSON Output"
                                          VerticalAlignment="Center"
                                          Foreground="{DynamicResource ThemeTextColor}"/>
                            </StackPanel>
                        </Grid>
                    </TabItem>

                    <!-- Text Input Tab -->
                    <TabItem Header="Text Input" Style="{StaticResource ThemedTabItem}">
                        <Grid Margin="0,10,0,0">
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition Height="150"/>
                                <RowDefinition Height="Auto"/>
                            </Grid.RowDefinitions>

                            <TextBlock Grid.Row="0"
                                       Text="Paste email headers below (copy from View Source or Show Original options in email clients):"
                                       Foreground="{DynamicResource ThemeTextColor}"
                                       Margin="0,0,0,5"/>

                            <Border Grid.Row="1" BorderBrush="{DynamicResource ThemeBorderColor}" BorderThickness="1" CornerRadius="4">
                                <ScrollViewer VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto">
                                    <TextBox x:Name="txtHeaderInput"
                                             AcceptsReturn="True"
                                             TextWrapping="NoWrap"
                                             FontFamily="Consolas"
                                             FontSize="12"
                                             Padding="10"
                                             Background="{DynamicResource ThemeWindowBackground}"
                                             Foreground="{DynamicResource ThemeTextColor}"
                                             BorderThickness="0"
                                             VerticalScrollBarVisibility="Auto"
                                             HorizontalScrollBarVisibility="Auto"
                                             TextChanged="TxtHeaderInput_TextChanged"/>
                                </ScrollViewer>
                            </Border>

                            <StackPanel Grid.Row="2" Orientation="Horizontal" Margin="0,10,0,0">
                                <Button x:Name="btnAnalyzeText"
                                        Content="Analyze Headers"
                                        Style="{StaticResource ModernButton}"
                                        MinWidth="120"
                                        IsEnabled="False"
                                        Click="BtnAnalyzeText_Click"/>

                                <Button x:Name="btnClearText"
                                        Content="Clear"
                                        Style="{StaticResource SecondaryButton}"
                                        Margin="10,0,0,0"
                                        MinWidth="80"
                                        Click="BtnClearText_Click"/>
                            </StackPanel>
                        </Grid>
                    </TabItem>
                </TabControl>
            </StackPanel>
        </Border>

        <!-- Results Section -->
        <ScrollViewer Grid.Row="1"
                      VerticalScrollBarVisibility="Auto"
                      HorizontalScrollBarVisibility="Disabled"
                      Background="{DynamicResource ThemeBackground}">
            <StackPanel x:Name="resultsPanel" Margin="20">
                <!-- Results will be added here dynamically -->
                <TextBlock x:Name="placeholderText"
                           Text="Select an email file and click Analyze to view header information"
                           FontSize="16"
                           Foreground="{DynamicResource ThemeSecondaryTextColor}"
                           HorizontalAlignment="Center"
                           VerticalAlignment="Center"
                           Margin="0,100,0,0"/>
            </StackPanel>
        </ScrollViewer>

        <!-- Status Bar -->
        <Border Grid.Row="2" Background="{DynamicResource ThemeBackground}" BorderBrush="{DynamicResource ThemeBorderColor}" BorderThickness="0,1,0,0">
            <Grid Margin="20,10">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto"/>
                    <ColumnDefinition Width="Auto"/>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="Auto"/>
                </Grid.ColumnDefinitions>

                <StackPanel Grid.Column="0" Orientation="Horizontal">
                    <ComboBox x:Name="cmbExportFormat"
                              Width="80"
                              Margin="0,0,5,0"
                              SelectedIndex="0"
                              IsEnabled="False"
                              Style="{StaticResource ThemedComboBox}">
                        <ComboBoxItem Content="HTML"/>
                        <ComboBoxItem Content="TXT"/>
                        <ComboBoxItem Content="JSON"/>
                        <ComboBoxItem Content="CSV"/>
                    </ComboBox>
                    <Button x:Name="btnExport"
                            Content="Export"
                            Style="{StaticResource SecondaryButton}"
                            Margin="0,0,10,0"
                            IsEnabled="False"
                            Click="BtnExport_Click"/>
                </StackPanel>

                <Button Grid.Column="1"
                        x:Name="btnCopyAll"
                        Content="Copy All"
                        Style="{StaticResource SecondaryButton}"
                        IsEnabled="False"
                        Click="BtnCopyAll_Click"/>

                <TextBlock Grid.Column="2"
                           x:Name="statusText"
                           Text="Ready"
                           VerticalAlignment="Center"
                           Margin="20,0,0,0"
                           Foreground="#107C10"/>

                <ProgressBar Grid.Column="3"
                             x:Name="progressBar"
                             Width="200"
                             Height="4"
                             Visibility="Collapsed"
                             IsIndeterminate="True"/>
            </Grid>
        </Border>
    </Grid>
</Window>