install-dev-tools.ps1

# PowerShell script to install Node.js, Git, and Python without admin access
# Run this script in PowerShell: .\install-dev-tools.ps1

$ErrorActionPreference = "Stop"

# Create installation directory
$InstallDir = "$env:USERPROFILE\DevTools"
$NodeDir = "$InstallDir\nodejs"
$GitDir = "$InstallDir\git"
$PythonDir = "$InstallDir\python"

Write-Host "Installing development tools to: $InstallDir" -ForegroundColor Green
Write-Host ""

# Create directories
New-Item -ItemType Directory -Force -Path $InstallDir | Out-Null
New-Item -ItemType Directory -Force -Path $NodeDir | Out-Null
New-Item -ItemType Directory -Force -Path $GitDir | Out-Null
New-Item -ItemType Directory -Force -Path $PythonDir | Out-Null

# Function to download files
function Download-File {
    param (
        [string]$Url,
        [string]$Output
    )
    Write-Host "Downloading: $Url" -ForegroundColor Cyan
    try {
        # Try using Invoke-WebRequest
        Invoke-WebRequest -Uri $Url -OutFile $Output -UseBasicParsing
    } catch {
        # Fallback to WebClient
        $webClient = New-Object System.Net.WebClient
        $webClient.DownloadFile($Url, $Output)
    }
}

# Function to extract zip files
function Extract-Archive {
    param (
        [string]$ZipFile,
        [string]$Destination
    )
    Write-Host "Extracting: $ZipFile" -ForegroundColor Cyan
    Expand-Archive -Path $ZipFile -DestinationPath $Destination -Force
}

# Install Node.js (portable)
Write-Host "`n=== Installing Node.js ===" -ForegroundColor Yellow
$NodeVersion = "v20.11.0"
$NodeUrl = "https://nodejs.org/dist/$NodeVersion/node-$NodeVersion-win-x64.zip"
$NodeZip = "$InstallDir\nodejs.zip"

Download-File -Url $NodeUrl -Output $NodeZip
Extract-Archive -ZipFile $NodeZip -Destination $NodeDir

# Move files from nested directory
$ExtractedNodeDir = Get-ChildItem -Path $NodeDir -Directory | Select-Object -First 1
if ($ExtractedNodeDir) {
    Get-ChildItem -Path $ExtractedNodeDir.FullName | Move-Item -Destination $NodeDir -Force
    Remove-Item -Path $ExtractedNodeDir.FullName -Recurse -Force
}
Remove-Item $NodeZip

Write-Host "Node.js installed to: $NodeDir" -ForegroundColor Green

# Install Git (portable)
Write-Host "`n=== Installing Git ===" -ForegroundColor Yellow
$GitVersion = "2.43.0"
$GitUrl = "https://github.com/git-for-windows/git/releases/download/v$GitVersion.windows.1/PortableGit-$GitVersion-64-bit.7z.exe"
$GitInstaller = "$InstallDir\git-portable.exe"

Download-File -Url $GitUrl -Output $GitInstaller

# The portable Git is a self-extracting archive
Write-Host "Extracting Git (this may take a moment)..." -ForegroundColor Cyan
Start-Process -FilePath $GitInstaller -ArgumentList "-o`"$GitDir`"", "-y" -Wait -NoNewWindow
Remove-Item $GitInstaller

Write-Host "Git installed to: $GitDir" -ForegroundColor Green

# Install Python (embeddable)
Write-Host "`n=== Installing Python ===" -ForegroundColor Yellow
$PythonVersion = "3.12.1"
$PythonUrl = "https://www.python.org/ftp/python/$PythonVersion/python-$PythonVersion-embed-amd64.zip"
$PythonZip = "$InstallDir\python.zip"

Download-File -Url $PythonUrl -Output $PythonZip
Extract-Archive -ZipFile $PythonZip -Destination $PythonDir
Remove-Item $PythonZip

# Configure Python to use pip
$PthFile = Get-ChildItem -Path $PythonDir -Filter "*._pth" | Select-Object -First 1
if ($PthFile) {
    $content = Get-Content $PthFile.FullName
    $content = $content -replace "#import site", "import site"
    Set-Content -Path $PthFile.FullName -Value $content
}

# Download and install pip
Write-Host "Installing pip..." -ForegroundColor Cyan
$GetPipUrl = "https://bootstrap.pypa.io/get-pip.py"
$GetPipFile = "$PythonDir\get-pip.py"
Download-File -Url $GetPipUrl -Output $GetPipFile
& "$PythonDir\python.exe" $GetPipFile --no-warn-script-location
Remove-Item $GetPipFile

Write-Host "Python installed to: $PythonDir" -ForegroundColor Green

# Update PATH for current session
Write-Host "`n=== Updating PATH ===" -ForegroundColor Yellow
$env:Path = "$NodeDir;$GitDir\cmd;$PythonDir;$PythonDir\Scripts;$env:Path"

# Add to user PATH permanently
$CurrentPath = [Environment]::GetEnvironmentVariable("Path", "User")
$PathsToAdd = @($NodeDir, "$GitDir\cmd", $PythonDir, "$PythonDir\Scripts")

foreach ($PathToAdd in $PathsToAdd) {
    if ($CurrentPath -notlike "*$PathToAdd*") {
        $CurrentPath = "$PathToAdd;$CurrentPath"
    }
}

[Environment]::SetEnvironmentVariable("Path", $CurrentPath, "User")
Write-Host "PATH updated for current and future sessions" -ForegroundColor Green

# Verify installations
Write-Host "`n=== Verifying Installations ===" -ForegroundColor Yellow
Write-Host ""

try {
    $nodeVersion = & "$NodeDir\node.exe" --version
    Write-Host "✓ Node.js: $nodeVersion" -ForegroundColor Green
} catch {
    Write-Host "✗ Node.js verification failed" -ForegroundColor Red
}

try {
    $npmVersion = & "$NodeDir\npm.cmd" --version
    Write-Host "✓ npm: v$npmVersion" -ForegroundColor Green
} catch {
    Write-Host "✗ npm verification failed" -ForegroundColor Red
}

try {
    $gitVersion = & "$GitDir\cmd\git.exe" --version
    Write-Host "✓ Git: $gitVersion" -ForegroundColor Green
} catch {
    Write-Host "✗ Git verification failed" -ForegroundColor Red
}

try {
    $pythonVersion = & "$PythonDir\python.exe" --version
    Write-Host "✓ Python: $pythonVersion" -ForegroundColor Green
} catch {
    Write-Host "✗ Python verification failed" -ForegroundColor Red
}

try {
    $pipVersion = & "$PythonDir\Scripts\pip.exe" --version
    Write-Host "✓ pip: $pipVersion" -ForegroundColor Green
} catch {
    Write-Host "✗ pip verification failed" -ForegroundColor Red
}

Write-Host "`n=== Installation Complete! ===" -ForegroundColor Green
Write-Host ""
Write-Host "Tools installed to: $InstallDir" -ForegroundColor Cyan
Write-Host ""
Write-Host "IMPORTANT: Please restart your PowerShell or Command Prompt for PATH changes to take effect." -ForegroundColor Yellow
Write-Host "Or run this command to update PATH in current session:" -ForegroundColor Yellow
Write-Host "`$env:Path = `"$NodeDir;$GitDir\cmd;$PythonDir;$PythonDir\Scripts;`$env:Path`"" -ForegroundColor Cyan