# 创建 PDF 合并函数
function Merge-PDFFiles {
    param(
        [string[]]$InputFiles,
        [string]$OutputFile
    )
    
    try {
        Add-Type -AssemblyName System.Drawing
        
        $pdfDoc = New-Object iTextSharp.text.Document
        $writer = [iTextSharp.text.PdfWriter]::GetInstance($pdfDoc, [System.IO.File]::Create($OutputFile))
        $pdfDoc.Open()
        
        foreach ($file in $InputFiles) {
            $reader = New-Object iTextSharp.text.PdfReader($file)
            $pdfDoc.AddPage($reader.GetPage(1))
        }
        
        $pdfDoc.Close()
        Write-Host "PDF 文件合并成功：$OutputFile"
    }
    catch {
        Write-Host "PDF 合并失败：$_"
    }
}

# 创建 PDF 文本提取函数
function Extract-PDFText {
    param(
        [string]$InputFile,
        [string]$OutputFile,
        [switch]$IncludeImages
    )
    
    try {
        Add-Type -AssemblyName System.Drawing
        
        $reader = New-Object iTextSharp.text.PdfReader($InputFile)
        $text = New-Object System.Text.StringBuilder
        
        for ($i = 1; $i -le $reader.NumberOfPages; $i++) {
            $page = $reader.GetPage($i)
            $text.AppendLine($page.GetText())
            
            if ($IncludeImages) {
                $images = $page.GetImages()
                foreach ($image in $images) {
                    $text.AppendLine("图片位置：$($image.GetAbsoluteX()) $($image.GetAbsoluteY())")
                }
            }
        }
        
        $text.ToString() | Out-File -FilePath $OutputFile -Encoding UTF8
        Write-Host "PDF 文本提取成功：$OutputFile"
    }
    catch {
        Write-Host "PDF 文本提取失败：$_"
    }
}

# 创建 PDF 页面管理函数
function Manage-PDFPages {
    param(
        [string]$InputFile,
        [string]$OutputFile,
        [int[]]$PageNumbers,
        [ValidateSet('Extract', 'Delete', 'Reorder')]
        [string]$Action
    )
    
    try {
        Add-Type -AssemblyName System.Drawing
        
        $reader = New-Object iTextSharp.text.PdfReader($InputFile)
        $writer = [iTextSharp.text.PdfWriter]::GetInstance($reader, [System.IO.File]::Create($OutputFile))
        
        switch ($Action) {
            'Extract' {
                $writer.SetPageNumbers($PageNumbers)
                Write-Host "PDF 页面提取成功：$OutputFile"
            }
            'Delete' {
                $writer.SetPageNumbers((1..$reader.NumberOfPages | Where-Object { $_ -notin $PageNumbers }))
                Write-Host "PDF 页面删除成功：$OutputFile"
            }
            'Reorder' {
                $writer.SetPageNumbers($PageNumbers)
                Write-Host "PDF 页面重排序成功：$OutputFile"
            }
        }
        
        $writer.Close()
    }
    catch {
        Write-Host "PDF 页面管理失败：$_"
    }
}

# 创建 PDF 表单处理函数
function Process-PDFForm {
    param(
        [string]$InputFile,
        [string]$OutputFile,
        [hashtable]$FormData
    )
    
    try {
        Add-Type -AssemblyName System.Drawing
        
        $reader = New-Object iTextSharp.text.PdfReader($InputFile)
        $stamper = New-Object iTextSharp.text.PdfStamper($reader, [System.IO.File]::Create($OutputFile))
        
        $form = $stamper.AcroFields
        foreach ($key in $FormData.Keys) {
            $form.SetField($key, $FormData[$key])
        }
        
        $stamper.Close()
        Write-Host "PDF 表单处理成功：$OutputFile"
    }
    catch {
        Write-Host "PDF 表单处理失败：$_"
    }
}

# 创建 PDF 加密函数
function Protect-PDFFile {
    param(
        [string]$InputFile,
        [string]$OutputFile,
        [string]$UserPassword,
        [string]$OwnerPassword,
        [string[]]$Permissions
    )
    
    try {
        Add-Type -AssemblyName System.Drawing
        
        $reader = New-Object iTextSharp.text.PdfReader($InputFile)
        $writer = [iTextSharp.text.PdfWriter]::GetInstance($reader, [System.IO.File]::Create($OutputFile))
        
        $writer.SetEncryption(
            [System.Text.Encoding]::UTF8.GetBytes($UserPassword),
            [System.Text.Encoding]::UTF8.GetBytes($OwnerPassword),
            [iTextSharp.text.pdf.PdfWriter]::ALLOW_PRINTING,
            [iTextSharp.text.pdf.PdfWriter]::ENCRYPTION_AES_128
        )
        
        $writer.Close()
        Write-Host "PDF 加密成功：$OutputFile"
    }
    catch {
        Write-Host "PDF 加密失败：$_"
    }
}

# 函数封装示例
function Get-SystemHealth {
    [CmdletBinding()]
    param(
        [ValidateSet('Basic','Full')]
        [string]$DetailLevel = 'Basic'
    )
    # 健康检查逻辑...
}

# 模块导出配置
Export-ModuleMember -Function Get-SystemHealth

# 模块目录结构
MyModule/
├── Public/
│   └── Get-SystemHealth.ps1
└── MyModule.psd1

# 安装模块
Copy-Item -Path ./MyModule -Destination $env:PSModulePath.Split(';')[0] -Recurse
Import-Module MyModule

# 模块清单配置
@{
    ModuleVersion = '1.2.0'
    FunctionsToExport = @('Get-SystemHealth')
    RequiredModules = @('PSScriptAnalyzer')
}

# 需求声明
#Requires -Modules @{ModuleName='Pester';ModuleVersion='5.3.1'}
#Requires -Version 7.0

# 创建 Windows Forms 主窗体函数
function New-WinFormApp {
    param(
        [string]$Title = "PowerShell GUI",
        [int]$Width = 800,
        [int]$Height = 600
    )
    
    try {
        Add-Type -AssemblyName System.Windows.Forms
        Add-Type -AssemblyName System.Drawing
        
        $form = New-Object System.Windows.Forms.Form
        $form.Text = $Title
        $form.Size = New-Object System.Drawing.Size($Width, $Height)
        $form.StartPosition = "CenterScreen"
        
        # 添加菜单栏
        $menuStrip = New-Object System.Windows.Forms.MenuStrip
        $fileMenu = New-Object System.Windows.Forms.ToolStripMenuItem("文件")
        $fileMenu.DropDownItems.Add("新建", $null, { Write-Host "新建" })
        $fileMenu.DropDownItems.Add("打开", $null, { Write-Host "打开" })
        $fileMenu.DropDownItems.Add("保存", $null, { Write-Host "保存" })
        $menuStrip.Items.Add($fileMenu)
        $form.Controls.Add($menuStrip)
        
        # 添加工具栏
        $toolStrip = New-Object System.Windows.Forms.ToolStrip
        $toolStrip.Items.Add("新建", $null, { Write-Host "新建" })
        $toolStrip.Items.Add("打开", $null, { Write-Host "打开" })
        $toolStrip.Items.Add("保存", $null, { Write-Host "保存" })
        $form.Controls.Add($toolStrip)
        
        # 添加状态栏
        $statusStrip = New-Object System.Windows.Forms.StatusStrip
        $statusLabel = New-Object System.Windows.Forms.ToolStripStatusLabel("就绪")
        $statusStrip.Items.Add($statusLabel)
        $form.Controls.Add($statusStrip)
        
        return $form
    }
    catch {
        Write-Host "创建窗体失败：$_"
    }
}

# 创建 Windows Forms 控件管理函数
function Add-WinFormControls {
    param(
        [System.Windows.Forms.Form]$Form,
        [hashtable]$Controls
    )
    
    try {
        foreach ($control in $Controls.GetEnumerator()) {
            $ctrl = switch ($control.Key) {
                "Button" {
                    New-Object System.Windows.Forms.Button
                }
                "TextBox" {
                    New-Object System.Windows.Forms.TextBox
                }
                "Label" {
                    New-Object System.Windows.Forms.Label
                }
                "ComboBox" {
                    New-Object System.Windows.Forms.ComboBox
                }
                "DataGridView" {
                    New-Object System.Windows.Forms.DataGridView
                }
                "TreeView" {
                    New-Object System.Windows.Forms.TreeView
                }
                "ListView" {
                    New-Object System.Windows.Forms.ListView
                }
                "TabControl" {
                    New-Object System.Windows.Forms.TabControl
                }
                "Panel" {
                    New-Object System.Windows.Forms.Panel
                }
                "GroupBox" {
                    New-Object System.Windows.Forms.GroupBox
                }
                default {
                    throw "不支持的控件类型：$($control.Key)"
                }
            }
            
            # 设置控件属性
            $control.Value.GetEnumerator() | ForEach-Object {
                $ctrl.$($_.Key) = $_.Value
            }
            
            $Form.Controls.Add($ctrl)
        }
        
        Write-Host "控件添加完成"
    }
    catch {
        Write-Host "控件添加失败：$_"
    }
}

# 创建 WPF 应用程序函数
function New-WPFApp {
    param(
        [string]$Title = "PowerShell WPF",
        [int]$Width = 800,
        [int]$Height = 600
    )
    
    try {
        Add-Type -AssemblyName PresentationFramework
        Add-Type -AssemblyName PresentationCore
        Add-Type -AssemblyName WindowsBase
        
        $xaml = @"
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="$Title" Height="$Height" Width="$Width" WindowStartupLocation="CenterScreen">
    <DockPanel>
        <Menu DockPanel.Dock="Top">
            <MenuItem Header="文件">
                <MenuItem Header="新建" Click="New_Click"/>
                <MenuItem Header="打开" Click="Open_Click"/>
                <MenuItem Header="保存" Click="Save_Click"/>
            </MenuItem>
        </Menu>
        <ToolBar DockPanel.Dock="Top">
            <Button Content="新建" Click="New_Click"/>
            <Button Content="打开" Click="Open_Click"/>
            <Button Content="保存" Click="Save_Click"/>
        </ToolBar>
        <StatusBar DockPanel.Dock="Bottom">
            <TextBlock Text="就绪"/>
        </StatusBar>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="*"/>
            </Grid.RowDefinitions>
            <StackPanel Grid.Row="0" Margin="10">
                <TextBox x:Name="InputTextBox" Margin="0,5"/>
                <Button Content="确定" Click="OK_Click" Margin="0,5"/>
            </StackPanel>
            <ListView Grid.Row="1" x:Name="ItemListView" Margin="10"/>
        </Grid>
    </DockPanel>
</Window>
"@
        
        $reader = [System.Xml.XmlNodeReader]::new([xml]$xaml)
        $window = [Windows.Markup.XamlReader]::Load($reader)
        
        # 添加事件处理程序
        $window.Add_Loaded({
            Write-Host "窗口已加载"
        })
        
        $window.Add_Closing({
            Write-Host "窗口正在关闭"
        })
        
        return $window
    }
    catch {
        Write-Host "创建 WPF 窗口失败：$_"
    }
}

# 创建 WPF 数据绑定函数
function Set-WPFDataBinding {
    param(
        [System.Windows.Window]$Window,
        [hashtable]$Bindings
    )
    
    try {
        foreach ($binding in $Bindings.GetEnumerator()) {
            $element = $Window.FindName($binding.Key)
            if ($element) {
                $binding.Value.GetEnumerator() | ForEach-Object {
                    $property = $_.Key
                    $value = $_.Value
                    
                    if ($value -is [scriptblock]) {
                        # 绑定事件处理程序
                        $element.Add_$property($value)
                    }
                    else {
                        # 绑定属性
                        $element.SetValue([System.Windows.Controls.Control]::$property, $value)
                    }
                }
            }
        }
        
        Write-Host "数据绑定完成"
    }
    catch {
        Write-Host "数据绑定失败：$_"
    }
}

# 创建 GUI 主题和样式函数
function Set-GUITheme {
    param(
        [System.Windows.Forms.Form]$Form,
        [ValidateSet("Light", "Dark", "Blue")]
        [string]$Theme
    )
    
    try {
        $colors = switch ($Theme) {
            "Light" {
                @{
                    Background = [System.Drawing.Color]::White
                    Foreground = [System.Drawing.Color]::Black
                    ControlBackground = [System.Drawing.Color]::White
                    ControlForeground = [System.Drawing.Color]::Black
                    Border = [System.Drawing.Color]::Gray
                }
            }
            "Dark" {
                @{
                    Background = [System.Drawing.Color]::FromArgb(32, 32, 32)
                    Foreground = [System.Drawing.Color]::White
                    ControlBackground = [System.Drawing.Color]::FromArgb(45, 45, 45)
                    ControlForeground = [System.Drawing.Color]::White
                    Border = [System.Drawing.Color]::Gray
                }
            }
            "Blue" {
                @{
                    Background = [System.Drawing.Color]::FromArgb(240, 240, 255)
                    Foreground = [System.Drawing.Color]::FromArgb(0, 0, 128)
                    ControlBackground = [System.Drawing.Color]::White
                    ControlForeground = [System.Drawing.Color]::FromArgb(0, 0, 128)
                    Border = [System.Drawing.Color]::FromArgb(0, 0, 255)
                }
            }
        }
        
        # 应用主题
        $Form.BackColor = $colors.Background
        $Form.ForeColor = $colors.Foreground
        
        foreach ($control in $Form.Controls) {
            $control.BackColor = $colors.ControlBackground
            $control.ForeColor = $colors.ControlForeground
            if ($control -is [System.Windows.Forms.Control]) {
                $control.FlatStyle = [System.Windows.Forms.FlatStyle]::Flat
                $control.FlatAppearance.BorderColor = $colors.Border
            }
        }
        
        Write-Host "主题应用完成"
    }
    catch {
        Write-Host "主题应用失败：$_"
    }
}

Get-VM

function New-CrossPlatformGUI {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string]$Title,
        
        [Parameter()]
        [int]$Width = 800,
        
        [Parameter()]
        [int]$Height = 600,
        
        [Parameter()]
        [scriptblock]$OnLoad,
        
        [Parameter()]
        [scriptblock]$OnClose
    )
    
    try {
        # 检查是否安装了必要的模块
        if (-not (Get-Module -ListAvailable -Name "Avalonia")) {
            Write-Host "正在安装Avalonia模块..."
            Install-Module -Name "Avalonia" -Scope CurrentUser -Force
        }
        
        # 创建主窗口
        $window = New-Object Avalonia.Window
        $window.Title = $Title
        $window.Width = $Width
        $window.Height = $Height
        
        # 创建主布局
        $grid = New-Object Avalonia.Controls.Grid
        $grid.RowDefinitions.Add("Auto")
        $grid.RowDefinitions.Add("*")
        
        # 创建标题栏
        $titleBar = New-Object Avalonia.Controls.TextBlock
        $titleBar.Text = $Title
        $titleBar.FontSize = 16
        $titleBar.Margin = "10"
        $grid.Children.Add($titleBar)
        
        # 创建内容区域
        $content = New-Object Avalonia.Controls.StackPanel
        $grid.Children.Add($content)
        
        # 设置窗口内容
        $window.Content = $grid
        
        # 注册事件处理程序
        if ($OnLoad) {
            $window.Loaded += $OnLoad
        }
        
        if ($OnClose) {
            $window.Closing += $OnClose
        }
        
        # 显示窗口
        $window.Show()
        
        return $window
    }
    catch {
        Write-Error "创建GUI失败：$_"
        return $null
    }
}

# 示例：创建一个简单的跨平台GUI应用
$window = New-CrossPlatformGUI -Title "跨平台PowerShell应用" `
    -Width 400 `
    -Height 300 `
    -OnLoad {
        Write-Host "窗口已加载"
    } `
    -OnClose {
        Write-Host "窗口已关闭"
    }

function Connect-CrossPlatformDatabase {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [ValidateSet("SQLite", "PostgreSQL", "MySQL", "MongoDB")]
        [string]$DatabaseType,
        
        [Parameter(Mandatory = $true)]
        [string]$ConnectionString,
        
        [Parameter()]
        [switch]$UseConnectionPooling
    )
    
    try {
        $connection = $null
        
        switch ($DatabaseType) {
            "SQLite" {
                $connection = New-Object Microsoft.Data.Sqlite.SqliteConnection($ConnectionString)
            }
            "PostgreSQL" {
                $connection = New-Object Npgsql.NpgsqlConnection($ConnectionString)
            }
            "MySQL" {
                $connection = New-Object MySql.Data.MySqlClient.MySqlConnection($ConnectionString)
            }
            "MongoDB" {
                $connection = New-Object MongoDB.Driver.MongoClient($ConnectionString)
            }
        }
        
        if ($UseConnectionPooling) {
            $connection.ConnectionString += ";Pooling=true"
        }
        
        $connection.Open()
        Write-Host "成功连接到 $DatabaseType 数据库" -ForegroundColor Green
        
        return $connection
    }
    catch {
        Write-Error "数据库连接失败：$_"
        return $null
    }
}

function Invoke-CrossPlatformQuery {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        $Connection,
        
        [Parameter(Mandatory = $true)]
        [string]$Query,
        
        [Parameter()]
        [hashtable]$Parameters
    )
    
    try {
        $command = $Connection.CreateCommand()
        $command.CommandText = $Query
        
        if ($Parameters) {
            foreach ($param in $Parameters.GetEnumerator()) {
                $dbParam = $command.CreateParameter()
                $dbParam.ParameterName = $param.Key
                $dbParam.Value = $param.Value
                $command.Parameters.Add($dbParam)
            }
        }
        
        $result = $command.ExecuteReader()
        $dataTable = New-Object System.Data.DataTable
        $dataTable.Load($result)
        
        return $dataTable
    }
    catch {
        Write-Error "查询执行失败：$_"
        return $null
    }
}

# 示例：使用SQLite数据库
$connection = Connect-CrossPlatformDatabase -DatabaseType "SQLite" `
    -ConnectionString "Data Source=test.db" `
    -UseConnectionPooling

$result = Invoke-CrossPlatformQuery -Connection $connection `
    -Query "SELECT * FROM Users WHERE Age > @Age" `
    -Parameters @{
        "Age" = 18
    }

function New-CrossPlatformWebServer {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string]$Url,
        
        [Parameter()]
        [scriptblock]$RequestHandler,
        
        [Parameter()]
        [int]$MaxConnections = 100
    )
    
    try {
        $listener = New-Object System.Net.HttpListener
        $listener.Prefixes.Add($Url)
        $listener.Start()
        
        Write-Host "Web服务器已启动，监听地址：$Url" -ForegroundColor Green
        
        while ($true) {
            $context = $listener.GetContext()
            $request = $context.Request
            $response = $context.Response
            
            # 处理请求
            if ($RequestHandler) {
                $RequestHandler.Invoke($request, $response)
            }
            else {
                $response.StatusCode = 200
                $response.ContentType = "text/plain"
                $responseString = "Hello from PowerShell Web Server!"
                $buffer = [System.Text.Encoding]::UTF8.GetBytes($responseString)
                $response.ContentLength64 = $buffer.Length
                $response.OutputStream.Write($buffer, 0, $buffer.Length)
            }
            
            $response.Close()
        }
    }
    catch {
        Write-Error "Web服务器启动失败：$_"
        return $null
    }
}

function Send-CrossPlatformHttpRequest {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string]$Url,
        
        [Parameter()]
        [ValidateSet("GET", "POST", "PUT", "DELETE")]
        [string]$Method = "GET",
        
        [Parameter()]
        [hashtable]$Headers,
        
        [Parameter()]
        [string]$Body
    )
    
    try {
        $client = New-Object System.Net.Http.HttpClient
        
        if ($Headers) {
            foreach ($header in $Headers.GetEnumerator()) {
                $client.DefaultRequestHeaders.Add($header.Key, $header.Value)
            }
        }
        
        $request = New-Object System.Net.Http.HttpRequestMessage($Method, $Url)
        
        if ($Body) {
            $request.Content = New-Object System.Net.Http.StringContent($Body)
        }
        
        $response = $client.SendAsync($request).Result
        $responseContent = $response.Content.ReadAsStringAsync().Result
        
        return [PSCustomObject]@{
            StatusCode = $response.StatusCode
            Content = $responseContent
            Headers = $response.Headers
        }
    }
    catch {
        Write-Error "HTTP请求失败：$_"
        return $null
    }
}

# 示例：创建Web服务器并发送请求
$server = Start-Job -ScriptBlock {
    New-CrossPlatformWebServer -Url "http://localhost:8080/" `
        -RequestHandler {
            param($request, $response)
            $responseString = "收到请求：$($request.Url)"
            $buffer = [System.Text.Encoding]::UTF8.GetBytes($responseString)
            $response.ContentLength64 = $buffer.Length
            $response.OutputStream.Write($buffer, 0, $buffer.Length)
        }
}

Start-Sleep -Seconds 2

$result = Send-CrossPlatformHttpRequest -Url "http://localhost:8080/" `
    -Method "GET" `
    -Headers @{
        "User-Agent" = "PowerShell Client"
    }

function Start-CrossPlatformFileWatcher {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string]$Path,
        
        [Parameter()]
        [ValidateSet("Created", "Changed", "Deleted", "Renamed", "All")]
        [string[]]$Events = @("All"),
        
        [Parameter()]
        [string]$Filter = "*.*",
        
        [Parameter()]
        [switch]$IncludeSubdirectories,
        
        [Parameter()]
        [scriptblock]$OnEvent
    )
    
    try {
        $watcher = New-Object System.IO.FileSystemWatcher
        $watcher.Path = $Path
        $watcher.Filter = $Filter
        $watcher.IncludeSubdirectories = $IncludeSubdirectories
        $watcher.EnableRaisingEvents = $true
        
        # 注册事件处理程序
        if ($Events -contains "All" -or $Events -contains "Created") {
            $watcher.Created += {
                if ($OnEvent) {
                    $OnEvent.Invoke("Created", $EventArgs)
                }
            }
        }
        
        if ($Events -contains "All" -or $Events -contains "Changed") {
            $watcher.Changed += {
                if ($OnEvent) {
                    $OnEvent.Invoke("Changed", $EventArgs)
                }
            }
        }
        
        if ($Events -contains "All" -or $Events -contains "Deleted") {
            $watcher.Deleted += {
                if ($OnEvent) {
                    $OnEvent.Invoke("Deleted", $EventArgs)
                }
            }
        }
        
        if ($Events -contains "All" -or $Events -contains "Renamed") {
            $watcher.Renamed += {
                if ($OnEvent) {
                    $OnEvent.Invoke("Renamed", $EventArgs)
                }
            }
        }
        
        Write-Host "文件系统监控已启动，监控路径：$Path" -ForegroundColor Green
        
        return $watcher
    }
    catch {
        Write-Error "文件系统监控启动失败：$_"
        return $null
    }
}

# 示例：监控文件系统变化
$watcher = Start-CrossPlatformFileWatcher -Path "C:\Temp" `
    -Events @("Created", "Changed", "Deleted") `
    -Filter "*.txt" `
    -IncludeSubdirectories `
    -OnEvent {
        param($eventType, $eventArgs)
        Write-Host "检测到文件系统事件：$eventType" -ForegroundColor Yellow
        Write-Host "文件路径：$($eventArgs.FullPath)" -ForegroundColor Cyan
    }

function New-CrossPlatformLogger {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string]$LogPath,
        
        [Parameter()]
        [ValidateSet("Debug", "Info", "Warning", "Error", "Critical")]
        [string]$LogLevel = "Info",
        
        [Parameter()]
        [switch]$EnableConsoleOutput,
        
        [Parameter()]
        [switch]$EnableFileOutput,
        
        [Parameter()]
        [switch]$EnableJsonFormat
    )
    
    try {
        $logger = [PSCustomObject]@{
            LogPath = $LogPath
            LogLevel = $LogLevel
            EnableConsoleOutput = $EnableConsoleOutput
            EnableFileOutput = $EnableFileOutput
            EnableJsonFormat = $EnableJsonFormat
            LogLevels = @{
                "Debug" = 0
                "Info" = 1
                "Warning" = 2
                "Error" = 3
                "Critical" = 4
            }
        }
        
        # 创建日志目录
        if ($EnableFileOutput) {
            $logDir = Split-Path -Parent $LogPath
            if (-not (Test-Path $logDir)) {
                New-Item -ItemType Directory -Path $logDir -Force | Out-Null
            }
        }
        
        # 添加日志方法
        $logger | Add-Member -MemberType ScriptMethod -Name "Log" -Value {
            param(
                [string]$Level,
                [string]$Message,
                [hashtable]$Properties
            )
            
            if ($this.LogLevels[$Level] -ge $this.LogLevels[$this.LogLevel]) {
                $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss.fff"
                $logEntry = [PSCustomObject]@{
                    Timestamp = $timestamp
                    Level = $Level
                    Message = $Message
                    Properties = $Properties
                }
                
                if ($this.EnableJsonFormat) {
                    $logString = $logEntry | ConvertTo-Json
                }
                else {
                    $logString = "[$timestamp] [$Level] $Message"
                    if ($Properties) {
                        $logString += " | " + ($Properties.GetEnumerator() | ForEach-Object { "$($_.Key)=$($_.Value)" }) -join " "
                    }
                }
                
                if ($this.EnableConsoleOutput) {
                    switch ($Level) {
                        "Debug" { Write-Debug $logString }
                        "Info" { Write-Host $logString -ForegroundColor White }
                        "Warning" { Write-Host $logString -ForegroundColor Yellow }
                        "Error" { Write-Host $logString -ForegroundColor Red }
                        "Critical" { Write-Host $logString -ForegroundColor DarkRed }
                    }
                }
                
                if ($this.EnableFileOutput) {
                    $logString | Out-File -FilePath $this.LogPath -Append
                }
            }
        }
        
        return $logger
    }
    catch {
        Write-Error "创建日志记录器失败：$_"
        return $null
    }
}

# 示例：使用日志记录器
$logger = New-CrossPlatformLogger -LogPath "C:\Logs\app.log" `
    -LogLevel "Info" `
    -EnableConsoleOutput `
    -EnableFileOutput `
    -EnableJsonFormat

$logger.Log("Info", "应用程序启动", @{
    "Version" = "1.0.0"
    "Platform" = $PSVersionTable.Platform
})

$logger.Log("Warning", "磁盘空间不足", @{
    "Drive" = "C:"
    "FreeSpace" = "1.2GB"
})

function Assess-SystemChanges {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string]$AssessmentID,
        
        [Parameter()]
        [string[]]$ChangeTypes,
        
        [Parameter()]
        [ValidateSet("Full", "Quick", "Custom")]
        [string]$AssessmentMode = "Full",
        
        [Parameter()]
        [hashtable]$AssessmentConfig,
        
        [Parameter()]
        [string]$LogPath
    )
    
    try {
        $assessor = [PSCustomObject]@{
            AssessmentID = $AssessmentID
            StartTime = Get-Date
            AssessmentStatus = @{}
            Changes = @{}
            Risks = @()
        }
        
        # 获取评估配置
        $config = Get-AssessmentConfig -AssessmentID $AssessmentID
        
        # 管理评估
        foreach ($type in $ChangeTypes) {
            $status = [PSCustomObject]@{
                Type = $type
                Status = "Unknown"
                Config = @{}
                Changes = @{}
                Risks = @()
            }
            
            # 应用评估配置
            $typeConfig = Apply-AssessmentConfig `
                -Config $config `
                -Type $type `
                -Mode $AssessmentMode `
                -Settings $AssessmentConfig
            
            $status.Config = $typeConfig
            
            # 评估系统变更
            $changes = Assess-ChangeImpact `
                -Type $type `
                -Config $typeConfig
            
            $status.Changes = $changes
            $assessor.Changes[$type] = $changes
            
            # 检查变更风险
            $risks = Check-ChangeRisks `
                -Changes $changes `
                -Config $typeConfig
            
            $status.Risks = $risks
            $assessor.Risks += $risks
            
            # 更新评估状态
            if ($risks.Count -gt 0) {
                $status.Status = "HighRisk"
            }
            else {
                $status.Status = "LowRisk"
            }
            
            $assessor.AssessmentStatus[$type] = $status
        }
        
        # 记录评估日志
        if ($LogPath) {
            $assessor | ConvertTo-Json -Depth 10 | Out-File -FilePath $LogPath
        }
        
        # 更新评估器状态
        $assessor.EndTime = Get-Date
        
        return $assessor
    }
    catch {
        Write-Error "变更评估失败：$_"
        return $null
    }
}

function Implement-SystemChanges {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string]$ImplementationID,
        
        [Parameter()]
        [string[]]$ImplementationTypes,
        
        [Parameter()]
        [ValidateSet("Rolling", "BlueGreen", "Canary")]
        [string]$ImplementationMode = "Rolling",
        
        [Parameter()]
        [hashtable]$ImplementationConfig,
        
        [Parameter()]
        [string]$ReportPath
    )
    
    try {
        $implementer = [PSCustomObject]@{
            ImplementationID = $ImplementationID
            StartTime = Get-Date
            ImplementationStatus = @{}
            Implementations = @{}
            Actions = @()
        }
        
        # 获取实施配置
        $config = Get-ImplementationConfig -ImplementationID $ImplementationID
        
        # 管理实施
        foreach ($type in $ImplementationTypes) {
            $status = [PSCustomObject]@{
                Type = $type
                Status = "Unknown"
                Config = @{}
                Implementations = @{}
                Actions = @()
            }
            
            # 应用实施配置
            $typeConfig = Apply-ImplementationConfig `
                -Config $config `
                -Type $type `
                -Mode $ImplementationMode `
                -Settings $ImplementationConfig
            
            $status.Config = $typeConfig
            
            # 实施系统变更
            $implementations = Implement-ChangeActions `
                -Type $type `
                -Config $typeConfig
            
            $status.Implementations = $implementations
            $implementer.Implementations[$type] = $implementations
            
            # 执行实施动作
            $actions = Execute-ImplementationActions `
                -Implementations $implementations `
                -Config $typeConfig
            
            $status.Actions = $actions
            $implementer.Actions += $actions
            
            # 更新实施状态
            if ($actions.Count -gt 0) {
                $status.Status = "InProgress"
            }
            else {
                $status.Status = "Completed"
            }
            
            $implementer.ImplementationStatus[$type] = $status
        }
        
        # 生成报告
        if ($ReportPath) {
            $report = Generate-ImplementationReport `
                -Implementer $implementer `
                -Config $config
            
            $report | ConvertTo-Json -Depth 10 | Out-File -FilePath $ReportPath
        }
        
        # 更新实施器状态
        $implementer.EndTime = Get-Date
        
        return $implementer
    }
    catch {
        Write-Error "变更实施失败：$_"
        return $null
    }
}

function Validate-SystemChanges {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory = $true)]
        [string]$ValidationID,
        
        [Parameter()]
        [string[]]$ValidationTypes,
        
        [Parameter()]
        [ValidateSet("Full", "Quick", "Custom")]
        [string]$ValidationMode = "Full",
        
        [Parameter()]
        [hashtable]$ValidationConfig,
        
        [Parameter()]
        [string]$ReportPath
    )
    
    try {
        $validator = [PSCustomObject]@{
            ValidationID = $ValidationID
            StartTime = Get-Date
            ValidationStatus = @{}
            Validations = @{}
            Issues = @()
        }
        
        # 获取验证配置
        $config = Get-ValidationConfig -ValidationID $ValidationID
        
        # 管理验证
        foreach ($type in $ValidationTypes) {
            $status = [PSCustomObject]@{
                Type = $type
                Status = "Unknown"
                Config = @{}
                Validations = @{}
                Issues = @()
            }
            
            # 应用验证配置
            $typeConfig = Apply-ValidationConfig `
                -Config $config `
                -Type $type `
                -Mode $ValidationMode `
                -Settings $ValidationConfig
            
            $status.Config = $typeConfig
            
            # 验证系统变更
            $validations = Validate-ChangeResults `
                -Type $type `
                -Config $typeConfig
            
            $status.Validations = $validations
            $validator.Validations[$type] = $validations
            
            # 检查验证问题
            $issues = Check-ValidationIssues `
                -Validations $validations `
                -Config $typeConfig
            
            $status.Issues = $issues
            $validator.Issues += $issues
            
            # 更新验证状态
            if ($issues.Count -gt 0) {
                $status.Status = "Failed"
            }
            else {
                $status.Status = "Passed"
            }
            
            $validator.ValidationStatus[$type] = $status
        }
        
        # 生成报告
        if ($ReportPath) {
            $report = Generate-ValidationReport `
                -Validator $validator `
                -Config $config
            
            $report | ConvertTo-Json -Depth 10 | Out-File -FilePath $ReportPath
        }
        
        # 更新验证器状态
        $validator.EndTime = Get-Date
        
        return $validator
    }
    catch {
        Write-Error "变更验证失败：$_"
        return $null
    }
}

# 评估系统变更
$assessor = Assess-SystemChanges -AssessmentID "ASSESSMENT001" `
    -ChangeTypes @("Configuration", "Software", "Hardware", "Network") `
    -AssessmentMode "Full" `
    -AssessmentConfig @{
        "Configuration" = @{
            "Categories" = @("System", "Application", "Security")
            "Attributes" = @("Settings", "Parameters", "Policies")
            "Filter" = "Status = Active"
            "Retention" = 7
        }
        "Software" = @{
            "Categories" = @("OS", "Application", "Driver")
            "Attributes" = @("Version", "Patch", "Update")
            "Filter" = "Status = Installed"
            "Retention" = 7
        }
        "Hardware" = @{
            "Categories" = @("Server", "Storage", "Network")
            "Attributes" = @("Capacity", "Performance", "Compatibility")
            "Filter" = "Status = Active"
            "Retention" = 7
        }
        "Network" = @{
            "Categories" = @("Topology", "Security", "Performance")
            "Attributes" = @("Connectivity", "Bandwidth", "Latency")
            "Filter" = "Status = Connected"
            "Retention" = 7
        }
    } `
    -LogPath "C:\Logs\change_assessment.json"

# 实施系统变更
$implementer = Implement-SystemChanges -ImplementationID "IMPLEMENTATION001" `
    -ImplementationTypes @("Configuration", "Software", "Hardware", "Network") `
    -ImplementationMode "Rolling" `
    -ImplementationConfig @{
        "Configuration" = @{
            "Actions" = @("Backup", "Update", "Verify")
            "Rollback" = $true
            "Timeout" = 300
            "Report" = $true
        }
        "Software" = @{
            "Actions" = @("Backup", "Install", "Verify")
            "Rollback" = $true
            "Timeout" = 600
            "Report" = $true
        }
        "Hardware" = @{
            "Actions" = @("Backup", "Replace", "Verify")
            "Rollback" = $true
            "Timeout" = 900
            "Report" = $true
        }
        "Network" = @{
            "Actions" = @("Backup", "Configure", "Verify")
            "Rollback" = $true
            "Timeout" = 300
            "Report" = $true
        }
    } `
    -ReportPath "C:\Reports\change_implementation.json"

# 验证系统变更
$validator = Validate-SystemChanges -ValidationID "VALIDATION001" `
    -ValidationTypes @("Configuration", "Software", "Hardware", "Network") `
    -ValidationMode "Full" `
    -ValidationConfig @{
        "Configuration" = @{
            "Metrics" = @("Compliance", "Security", "Performance")
            "Threshold" = 90
            "Interval" = 60
            "Report" = $true
        }
        "Software" = @{
            "Metrics" = @("Functionality", "Stability", "Performance")
            "Threshold" = 90
            "Interval" = 60
            "Report" = $true
        }
        "Hardware" = @{
            "Metrics" = @("Availability", "Performance", "Health")
            "Threshold" = 90
            "Interval" = 60
            "Report" = $true
        }
        "Network" = @{
            "Metrics" = @("Connectivity", "Performance", "Security")
            "Threshold" = 90
            "Interval" = 60
            "Report" = $true
        }
    } `
    -ReportPath "C:\Reports\change_validation.json"

Add-DhcpServerInDC -DnsName "dhcp.xyz.com"

Backup-DhcpServer -ComputerName "dhcp.xyz.com" -Path "%systemroot\dhcp\backup"

Export-DhcpServer -ComputerName "dhcp.xyz.com" -File "path\config.xml"

Get-DhcpServerv4Lease -ComputerName "dhcp.xyz.com" -ScopeId IP

Get-DhcpServerv4Policy -ComputerName "dhcp.xyz.com" -Name "policyname"

Add-DnsServerForwarder -IPAddress IP -PassThru

Add-DnsServerRootHint -NameServer "domain.com" -IPAddress IP

Get-DnsServer -ComputerName "IP"

Get-DnsServerForwarder

Remove-DnsServerForwarder -IPAddress IP -PassThru

Get-DnsServer -CimSession IP | Set-DnsServer

Clear-DnsServerCache -ComputerName "Name of server" -Force