Application Deployment using PowerShell Script

# -----------------------------------------------------------------------------
# Script Name: Deploy-Application.ps1
# Description: Automates the silent deployment of applications using an MSI installer.

# -----------------------------------------------------------------------------

# PARAMETERS:
# -MsiPath: Path to the MSI installer file.
# -LogPath: Path to a directory for installation log files.

param(
    [Parameter(Mandatory=$true)]
    [string]$MsiPath,

    [Parameter(Mandatory=$false)]
    [string]$LogPath
)

# --- SCRIPT LOGIC ---
if (-not (Test-Path -Path $MsiPath -PathType Leaf)) {
    Write-Host "Error: The specified MSI file was not found." -ForegroundColor Red
    exit
}

# Construct the full command for silent installation
# /i for installation, /qn for quiet mode (no user interface)
# /L*v for verbose logging
$msiArgs = "/i `"$MsiPath`" /qn"

# Add logging parameters if a log path is provided
if ($LogPath) {
    if (-not (Test-Path -Path $LogPath -PathType Container)) {
        New-Item -ItemType Directory -Path $LogPath | Out-Null
    }
    $logFile = Join-Path -Path $LogPath -ChildPath "msi_log_$(Get-Date -Format 'yyyyMMdd_HHmmss').log"
    $msiArgs += " /L*v `"$logFile`""
    Write-Host "Installation log will be saved to: $logFile" -ForegroundColor Yellow
}

Write-Host "Starting silent installation of $($MsiPath)..."

try {
    # Execute the MSI command
    $process = Start-Process -FilePath "msiexec.exe" -ArgumentList $msiArgs -Wait -PassThru
    
    # Check the exit code for success
    if ($process.ExitCode -eq 0) {
        Write-Host "Installation completed successfully." -ForegroundColor Green
    } else {
        Write-Host "Installation failed with exit code $($process.ExitCode)." -ForegroundColor Red
        Write-Host "Refer to the log file for details." -ForegroundColor Red
    }
} catch {
    Write-Host "An error occurred during the installation process: $($_.Exception.Message)" -ForegroundColor Red
}