# backup.ps1 — Backup existing ~/.claude/ files before install
$ErrorActionPreference = "Stop"

$claudeDir = Join-Path $env:USERPROFILE ".claude"
$timestamp = Get-Date -Format "yyyy-MM-dd_HHmmss"
$backupDir = Join-Path $claudeDir "backup-$timestamp"

if (-not (Test-Path $claudeDir)) {
    Write-Host "No ~/.claude/ directory found. Nothing to backup." -ForegroundColor Yellow
    exit 0
}

Write-Host "Backing up ~/.claude/ files to $backupDir" -ForegroundColor Cyan

New-Item -ItemType Directory -Path $backupDir -Force | Out-Null

# Backup individual files
$files = @("CLAUDE.md", "settings.json", "keybindings.json")
foreach ($file in $files) {
    $src = Join-Path $claudeDir $file
    if (Test-Path $src) {
        Copy-Item $src (Join-Path $backupDir $file) -Force
        Write-Host "  Backed up: $file" -ForegroundColor Green
    }
}

# Backup directories
$dirs = @("skills", "rules", "commands")
foreach ($dir in $dirs) {
    $src = Join-Path $claudeDir $dir
    if (Test-Path $src) {
        Copy-Item $src (Join-Path $backupDir $dir) -Recurse -Force
        Write-Host "  Backed up: $dir/" -ForegroundColor Green
    }
}

Write-Host ""
Write-Host "Backup complete: $backupDir" -ForegroundColor Green