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+# Windows PowerShell installation script for Komari Agent
+
+# Logging functions with colors
+function Log-Info   { Write-Host "[INFO]    $($_)"    -ForegroundColor Cyan }
+function Log-Success{ Write-Host "[SUCCESS] $($_)"    -ForegroundColor Green }
+function Log-Warning{ Write-Host "[WARNING] $($_)"    -ForegroundColor Yellow }
+function Log-Error  { Write-Host "[ERROR]   $($_)"    -ForegroundColor Red }
+function Log-Step   { Write-Host "[STEP]    $($_)"    -ForegroundColor Magenta }
+function Log-Config { Write-Host "[CONFIG]  $($_)"    -ForegroundColor White }
+
+# Default parameters
+$InstallDir      = Join-Path $Env:ProgramFiles "Komari"
+$ServiceName     = "komari-agent"
+$GitHubProxy     = ""
+$KomariArgs      = @()
+
+# Parse script arguments
+for ($i = 0; $i -lt $args.Count; $i++) {
+    switch ($args[$i]) {
+        "--install-dir"          { $InstallDir = $args[$i+1]; $i++; continue }
+        "--install-service-name" { $ServiceName = $args[$i+1]; $i++; continue }
+        "--install-ghproxy"      { $GitHubProxy = $args[$i+1]; $i++; continue }
+        Default                    { $KomariArgs += $args[$i] }
+    }
+}
+
+# Ensure running as Administrator
+if (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()
+    ).IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator)) {
+    Log-Error "Please run this script as Administrator."
+    exit 1
+}
+
+Log-Step "Installation configuration:"
+Log-Config "Service name: $ServiceName"
+Log-Config "Install directory: $InstallDir"
+Log-Config "GitHub proxy: $($GitHubProxy -ne '' ? $GitHubProxy : '(direct)')"
+Log-Config "Agent arguments: $($KomariArgs -join ' ')"
+
+# Paths
+$BinaryName   = "komari-agent-windows-$((switch($env:PROCESSOR_ARCHITECTURE) { 'AMD64' { 'amd64' }; 'ARM64' { 'arm64' }; Default { '' } })) .exe".Trim()
+$AgentPath    = Join-Path $InstallDir $BinaryName
+
+# Uninstall previous service and binary
+function Uninstall-Previous {
+    Log-Step "Checking for existing service..."
+    $svc = Get-Service -Name $ServiceName -ErrorAction SilentlyContinue
+    if ($svc) {
+        Log-Info "Stopping service $ServiceName..."
+        Stop-Service $ServiceName -Force
+        Log-Info "Deleting service $ServiceName..."
+        sc.exe delete $ServiceName | Out-Null
+    }
+    if (Test-Path $AgentPath) {
+        Log-Info "Removing old binary..."
+        Remove-Item $AgentPath -Force
+    }
+}
+Uninstall-Previous
+
+# Detect architecture
+switch ($env:PROCESSOR_ARCHITECTURE) {
+    "AMD64" { $arch = "amd64" }
+    "ARM64" { $arch = "arm64" }
+    Default  { Log-Error "Unsupported architecture: $env:PROCESSOR_ARCHITECTURE"; exit 1 }
+}
+Log-Info "Detected architecture: $arch"
+
+# Fetch latest release version
+$ApiUrl = "https://api.github.com/repos/komari-monitor/komari-agent/releases/latest"
+Log-Step "Fetching latest version from GitHub API..."
+try {
+    $release        = Invoke-RestMethod -Uri $ApiUrl -UseBasicParsing
+    $latestVersion  = $release.tag_name
+} catch {
+    Log-Error "Failed to fetch latest version: $_"
+    exit 1
+}
+Log-Success "Latest version: $latestVersion"
+
+# Construct download URL
+$BinaryName  = "komari-agent-windows-$arch.exe"
+$DownloadUrl = if ($GitHubProxy) { "$GitHubProxy/https://github.com/komari-monitor/komari-agent/releases/download/$latestVersion/$BinaryName" } else { "https://github.com/komari-monitor/komari-agent/releases/download/$latestVersion/$BinaryName" }
+
+# Download and install
+Log-Step "Preparing installation directory..."
+New-Item -ItemType Directory -Path $InstallDir -Force | Out-Null
+Log-Step "Downloading $BinaryName..."
+Log-Info "URL: $DownloadUrl"
+try {
+    Invoke-WebRequest -Uri $DownloadUrl -OutFile $AgentPath -UseBasicParsing
+} catch {
+    Log-Error "Download failed: $_"
+    exit 1
+}
+Log-Success "Downloaded and saved to $AgentPath"
+
+# Register and start service
+Log-Step "Configuring Windows service..."
+$argString = $KomariArgs -join ' '
+New-Service -Name $ServiceName -BinaryPathName "`"$AgentPath`" $argString" -DisplayName "Komari Agent Service" -StartupType Automatic
+Start-Service $ServiceName
+Log-Success "Service $ServiceName installed and started."
+
+Log-Success "Komari Agent installation completed!"
+Log-Config "Service name: $ServiceName"
+Log-Config "Arguments: $argString"