setup.ps1

<#
.SYNOPSIS
    Script to configure my dotfiles
.DESCRIPTION
    This script helps automate the deployment and configuration of your dotfiles.
.NOTES
    This script can be only run in powershell 7+
.LINK
    https://github.com/Deep7k/windows-dotfiles/blob/master/README.md
.EXAMPLE
    .\setup.ps1 -WithFonts
#>

[CmdletBinding()]
param (
    [Parameter(Mandatory = $false)]
    [switch]
    $WithFonts,
    [Parameter(Mandatory = $false)]
    [switch]
    $WithOptionalApps
)

# Perform important tests before main script execution
# Check if powershell is running as administrator
if (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
    Write-Host "Please run this script as an Administrator!" -ForegroundColor Red
    break
}

# Check the powershell version
$version = $PSVersionTable.PSVersion
if ($version.Major -ne 7) {
    Write-Host "This script requires PowerShell 7. The current version is $version." -ForegroundColor Red
    exit
}

# Test for internet availability
function Test-InternetConnection {
    try {
        Test-Connection -ComputerName www.google.com -Count 1 -ErrorAction Stop > $null
        return $true
    }
    catch {
        Write-Warning "Internet connection is required but not available. Please connect to WiFi/Ethernet "
        return $false
    }
}
if (-not (Test-InternetConnection)) {
    break
}

# Check and install App Dependencies
Write-Host "Installing App Dependencies..."
try {
    winget install -e --accept-source-agreements --accept-package-agreements Microsoft.WindowsTerminal > $null
    winget install -e --accept-source-agreements --accept-package-agreements JanDeDobbeleer.OhMyPosh > $null
}
catch {
    Write-Error "Failed to install Dependencies. Error: $_"
}

# Install optional apps if parameter is specified
try {
    if ($WithOptionalApps) {
        Write-Host "Installing Optional Apps..."
        winget import ".\optional-apps.json" --accept-source-agreements --accept-package-agreements --ignore-versions
    }
}
catch {
    Write-Error "Failed to install Optinal apps Error: $_"
}

# Install CaskaydiaCove NerdFont. Required for Oh-my-posh prompt
try {
    [void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
    $fontFamilies = (New-Object System.Drawing.Text.InstalledFontCollection).Families.Name
    
    if (($fontFamilies -notcontains "CaskaydiaCove NF") -and ($WithFonts) ) {

        Write-Host "Installing Cascadiacode NF..."
        Invoke-WebRequest -Uri "https://github.com/ryanoasis/nerd-fonts/releases/download/v3.2.1/CascadiaCode.zip" -OutFile ".\CascadiaCode.zip"

        Expand-Archive -Path ".\CascadiaCode.zip" -DestinationPath ".\CascadiaCode" -Force
        $destination = (New-Object -ComObject Shell.Application).Namespace(0x14)
        Get-ChildItem -Path ".\CascadiaCode" -Recurse -Filter "*.ttf" | ForEach-Object {
            If (-not(Test-Path "C:\Windows\Fonts\$($_.Name)")) {        
                $destination.CopyHere($_.FullName, 0x10)
            }
        }
        Remove-Item -Path ".\CascadiaCode" -Recurse -Force
        Remove-Item -Path ".\CascadiaCode.zip" -Force
    }
    # Install Firacode Nerd Font if parameter is specified
    if (($fontFamilies -notcontains "FiraCode Nerd Font") -and ($WithFonts) ) {

        Write-Host "Installing Fira Code NF..."
        Invoke-WebRequest -Uri "https://github.com/ryanoasis/nerd-fonts/releases/download/v3.2.1/FiraCode.zip" -OutFile ".\FiraCode.zip"

        Expand-Archive -Path ".\FiraCode.zip" -DestinationPath ".\FiraCode" -Force
        $destination = (New-Object -ComObject Shell.Application).Namespace(0x14)
        Get-ChildItem -Path ".\FiraCode" -Recurse -Filter "*.ttf" | ForEach-Object {
            If (-not(Test-Path "C:\Windows\Fonts\$($_.Name)")) {        
                $destination.CopyHere($_.FullName, 0x10)
            }
        }
        Remove-Item -Path ".\FiraCode" -Recurse -Force
        Remove-Item -Path ".\FiraCode.zip" -Force
    }
}
catch {
    Write-Error "Failed to download or install the Nerd font. Error: $_"
}

Write-Host "Configuring Dotfiles..."
$wtSettingsPath = "$env:LOCALAPPDATA\Packages\Microsoft.WindowsTerminal_8wekyb3d8bbwe\LocalState\settings.json"
$wtSettingsTarget = (Resolve-Path "$PSScriptRoot\windows-terminal-settings.json").Path
$powershellDirPath = "$env:USERPROFILE\Documents\Powershell"
$powershellDirTarget = (Resolve-Path "$PSScriptRoot\Powershell").Path
$gitconfigPath = "$env:USERPROFILE\.gitconfig"
$gitconfigTarget = (Resolve-Path "$PSScriptRoot\gitconfig").Path
$notepadTarget = (Resolve-Path "$PSScriptRoot\Notepad++").Path

function BackupAndLink {
    param (
        [string]$path,
        [string]$target
    )

    if (Test-Path $path) {
        $timestamp = Get-Date -Format "yyyyMMddHHmmss"
        $backupName = $path + ".old." + $timestamp
        Rename-Item -Path $path -NewName $backupName -Force -ErrorAction Stop > $null

        Write-Host "Backup created: $backupName"
    }

    New-Item -ItemType SymbolicLink -Path $path -Target $target -ErrorAction Stop > $null
    Write-Host "Symbolic link created: $path -> $target"
}

try {
    BackupAndLink -path $wtSettingsPath -target $wtSettingsTarget
    BackupAndLink -path $powershellDirPath -target $powershellDirTarget
    BackupAndLink -path $gitconfigPath -target $gitconfigTarget
}
catch {
    Write-Error "Unable to create symlinks Error: $_"
}

Compress-Archive -Path $env:APPDATA\Notepad++ -DestinationPath $env:APPDATA\Notepad++\ConfigBackup$(Get-Date -Format "yyyyMMddHH") -CompressionLevel Fastest
Copy-Item -Path $notepadTarget -Destination $env:APPDATA\Notepad++ -Force

# Check and install PS Modules
Write-Host "Installing Powershell modules..."
try {
    Install-Module -Name Terminal-Icons -Repository PSGallery -Force
    Install-Module -Name posh-git -Repository PSGallery -Force
}
catch {
    Write-Error "Failed to install Terminal Icons and posh git. Error: $_"
}

# Final check and message to the user
if ((Test-Path -Path $PROFILE) -and (winget list --name "OhMyPosh" -e) -and ($fontFamilies -contains "CaskaydiaCove NF")) {
    Write-Host "Setup completed successfully. Please restart your PowerShell session to apply changes." -ForegroundColor Green
}
else {
    Write-Warning "Setup completed with errors. Please check the error messages above." 
}