Setup GitHub Copilot Windows Terminal profile with icon

setup-copilot-terminal-profile.ps1

# Setup GitHub Copilot Windows Terminal Profile
# Run: irm <gist-raw-url> | iex

$ErrorActionPreference = "Stop"

function Write-Step([string]$Message) {
    Write-Host "[OK] $Message"
}

# 0. Choose the best Copilot command available
$profileLaunchCommand = $null

if (Get-Command copilot -ErrorAction SilentlyContinue) {
    $profileLaunchCommand = 'pwsh -NoExit -Command "copilot"'
    Write-Step "Detected Copilot CLI"
}
elseif (Get-Command gh -ErrorAction SilentlyContinue) {
    $ghCopilotAvailable = $false
    try {
        gh copilot --help *> $null
        $ghCopilotAvailable = $true
    }
    catch {
        $ghCopilotAvailable = $false
    }

    if (-not $ghCopilotAvailable) {
        Write-Host "GitHub Copilot extension not found in gh. Installing github/gh-copilot..."
        gh extension install github/gh-copilot
        gh copilot --help *> $null
        Write-Step "Installed gh-copilot extension"
    }

    $profileLaunchCommand = 'pwsh -NoExit -Command "gh copilot"'
    Write-Step "Using gh copilot fallback"
}
else {
    throw "Neither 'copilot' nor 'gh' was found in PATH. Install Copilot CLI or GitHub CLI first."
}

# 1. Save a recognizable GitHub/Copilot icon (PNG first)
$iconDir = Join-Path $env:LOCALAPPDATA "terminal-icons"
New-Item -ItemType Directory -Path $iconDir -Force | Out-Null

$iconCandidates = @(
    [PSCustomObject]@{
        Url      = "https://github.githubassets.com/images/modules/site/copilot/copilot.png"
        FileName = "github-copilot.png"
    },
    [PSCustomObject]@{
        Url      = "https://github.githubassets.com/images/modules/site/copilot/copilot-logo.svg"
        FileName = "github-copilot.svg"
    },
    [PSCustomObject]@{
        Url      = "https://raw.githubusercontent.com/github/explore/main/topics/github/github.png"
        FileName = "github.png"
    }
)

$downloaded = $false
$iconPath = $null

foreach ($candidate in $iconCandidates) {
    $candidatePath = Join-Path $iconDir $candidate.FileName
    try {
        Invoke-WebRequest -Uri $candidate.Url -OutFile $candidatePath -UseBasicParsing
        if ((Test-Path $candidatePath) -and ((Get-Item $candidatePath).Length -gt 0)) {
            $iconPath = $candidatePath
            Write-Step "Downloaded icon from $($candidate.Url)"
            $downloaded = $true
            break
        }
    }
    catch {
        Write-Host "[WARN] Could not download icon from $($candidate.Url)"
    }
}

if (-not $downloaded -or -not $iconPath) {
    throw "Failed to download a recognizable icon from all known sources."
}

# 2. Add/update profile in all Windows Terminal settings files
$settingsPaths = @(
    "$env:LOCALAPPDATA\Packages\Microsoft.WindowsTerminal_8wekyb3d8bbwe\LocalState\settings.json",
    "$env:LOCALAPPDATA\Packages\Microsoft.WindowsTerminalPreview_8wekyb3d8bbwe\LocalState\settings.json",
    "$env:LOCALAPPDATA\Packages\Microsoft.WindowsTerminalCanary_8wekyb3d8bbwe\LocalState\settings.json",
    "$env:LOCALAPPDATA\Microsoft\Windows Terminal\settings.json"
)

$existingSettingsPaths = $settingsPaths | Where-Object { Test-Path $_ }
if (-not $existingSettingsPaths) {
    throw "Windows Terminal settings not found. Is Windows Terminal installed?"
}

$profileGuid = "{a1b2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d}"
$updatedCount = 0

foreach ($settingsPath in $existingSettingsPaths) {
    $settings = Get-Content $settingsPath -Raw | ConvertFrom-Json

    if (-not $settings.profiles) {
        $settings | Add-Member -MemberType NoteProperty -Name profiles -Value ([PSCustomObject]@{ list = @() })
    }
    if (-not $settings.profiles.list) {
        $settings.profiles | Add-Member -MemberType NoteProperty -Name list -Value @()
    }

    $profile = $settings.profiles.list | Where-Object { $_.guid -eq $profileGuid } | Select-Object -First 1

    if ($profile) {
        $profile.commandline = $profileLaunchCommand
        $profile.icon = $iconPath
        $profile.name = "GitHub Copilot"
        $profile.hidden = $false
        Write-Step "Updated GitHub Copilot profile in $settingsPath"
    }
    else {
        $newProfile = [PSCustomObject]@{
            commandline = $profileLaunchCommand
            guid        = $profileGuid
            icon        = $iconPath
            name        = "GitHub Copilot"
            hidden      = $false
        }
        $settings.profiles.list = @($newProfile) + @($settings.profiles.list)
        Write-Step "Added GitHub Copilot profile to $settingsPath"
    }

    $settings | ConvertTo-Json -Depth 20 | Set-Content $settingsPath -Encoding UTF8
    $updatedCount++
}

Write-Host ""
Write-Host "Done! Updated $updatedCount Windows Terminal settings file(s)."
Write-Host "Restart Windows Terminal to see the new profile."