Install.ps1

# ==========================================================================
# Install Script - OMP, PS7, CaskaydiaCove Nerd Font, Theme Menu
# In VScode add 'CaskaydiaCove NF' to terminal.integrated.fontFamily manually
# also set terminal.integrated.minimumContrastRatio to 0
# ==========================================================================

# Ensure the script runs as Administrator
$currentUser = [Security.Principal.WindowsIdentity]::GetCurrent()
$principal   = New-Object Security.Principal.WindowsPrincipal($currentUser)

if (-not $principal.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator)) {
    Write-Error "Please run this script as Administrator."
    exit 1
}


$ErrorActionPreference = "Stop"

$installDir = "C:\ompinstall"
$fontsDir   = "$installDir\Fonts"
$themesDir  = "$installDir\themes"

New-Item -ItemType Directory -Force -Path $installDir | Out-Null
New-Item -ItemType Directory -Force -Path $fontsDir   | Out-Null
New-Item -ItemType Directory -Force -Path $themesDir  | Out-Null

Write-Host ""
Write-Host "=== Starting installation ==="
Write-Host ""

# ------------------------------
# Install Oh My Posh
# ------------------------------
if (-not (Get-Command oh-my-posh -ErrorAction SilentlyContinue)) {
    Write-Host "Installing Oh My Posh..."
    winget install JanDeDobbeleer.OhMyPosh -e --accept-package-agreements --accept-source-agreements
} else {
    Write-Host "Oh My Posh already installed."
}

# ------------------------------
# Install PowerShell 7 
# ------------------------------
$isArm = $env:PROCESSOR_ARCHITECTURE -like "*ARM*"

if ($isArm) {
    $arch = "arm64"
} else {
    $arch = "x64"
}

$version = "7.5.4"
$pwshUrl = "https://github.com/PowerShell/PowerShell/releases/download/v$version/PowerShell-$version-win-$arch.msi"
$pwshMsi = "$installDir\pwsh.msi"

if (-not (Get-Command pwsh.exe -ErrorAction SilentlyContinue)) {
    Write-Host "Installing PowerShell 7 ($arch)..."
    Invoke-WebRequest -Uri $pwshUrl -OutFile $pwshMsi
    Start-Process msiexec.exe -ArgumentList "/i `"$pwshMsi`" /quiet /norestart" -Wait
} else {
    Write-Host "PowerShell 7 already installed."
}

# ------------------------------
# Install Nerd Font
# ------------------------------
$fontZipUrl = "https://github.com/ryanoasis/nerd-fonts/releases/download/v3.4.0/CascadiaCode.zip"
$fontZipPath = "$installDir\CascadiaCode.zip"

if (-not (Get-ChildItem $fontsDir -Filter *.ttf -ErrorAction SilentlyContinue)) {
    Write-Host "Downloading Nerd Fonts..."
    Invoke-WebRequest -Uri $fontZipUrl -OutFile $fontZipPath
    Expand-Archive -Path $fontZipPath -DestinationPath $fontsDir -Force
}

Write-Host "Installing Fonts..."
$fontFiles = Get-ChildItem "$fontsDir\*Caskaydia*.ttf"

foreach ($font in $fontFiles) {
    $dest = "$env:WINDIR\Fonts\$($font.Name)"

    if (-not (Test-Path $dest)) {
        Copy-Item $font.FullName $dest -Force
        New-ItemProperty -Path "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Fonts" -Name $font.Name -Value $font.Name -PropertyType String -Force | Out-Null
        Write-Host "Installed font: $($font.Name)"
    }
    else {
        Write-Host "Font already installed: $($font.Name)"
    }
}

# ------------------------------
# Theme selection menu
# ------------------------------
$themes = Get-ChildItem "$themesDir\*.json"
if ($themes.Count -eq 0) {
    Write-Host "No themes found in $themesDir"
    exit 1
}

Write-Host ""
Write-Host "Available Themes:"
Write-Host ""

for ($i = 0; $i -lt $themes.Count; $i++) {
    Write-Host "[$($i+1)] $($themes[$i].Name)"
}

$choice = Read-Host "Enter theme number"
$index = [int]$choice - 1

if ($index -lt 0 -or $index -ge $themes.Count) {
    Write-Host "Invalid selection"
    exit 1
}

$theme = $themes[$index]
Write-Host "Theme selected: $($theme.Name)"

# ------------------------------
# Configure PowerShell profiles
# ------------------------------
$OMPCommand = 'oh-my-posh init pwsh --config "' + $theme.FullName + '" | Invoke-Expression'

$PS7Profile = "$HOME\Documents\PowerShell\Microsoft.PowerShell_profile.ps1"
New-Item -ItemType File -Force -Path $PS7Profile | Out-Null
Set-Content $PS7Profile $OMPCommand

$PS5Profile = "$HOME\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1"
New-Item -ItemType File -Force -Path $PS5Profile | Out-Null
Set-Content $PS5Profile $OMPCommand

# ------------------------------
# Windows Terminal - set font per profile
# ------------------------------
$wtSettings = "$env:LOCALAPPDATA\Packages\Microsoft.WindowsTerminal_8wekyb3d8bbwe\LocalState\settings.json"

if (Test-Path $wtSettings) {
    Write-Host "Updating all Windows Terminal profiles with correct font..."

    $settingsJson = Get-Content $wtSettings -Raw | ConvertFrom-Json

    if ($settingsJson.profiles.list) {
        foreach ($profile in $settingsJson.profiles.list) {

            if (-not $profile.font) {
                $profile | Add-Member -NotePropertyName font -NotePropertyValue @{} -Force
            }

            $profile.font.face = "CaskaydiaCove NF"
        }

        $settingsJson | ConvertTo-Json -Depth 32 | Set-Content $wtSettings -Encoding UTF8
        Write-Host "Windows Terminal profile fonts updated."
    }
    else {
        Write-Host "No profiles found in Windows Terminal settings."
    }
}
else {
    Write-Host "Windows Terminal settings.json not found."
}

Write-Host ""
Write-Host "=== Installation complete ==="
Write-Host "Close and fully restart Windows Terminal."
Write-Host ""