# 1_Map_Dev_Caches.ps1
$TargetBase = "D:\Data\Symlink_Storage"

# 定义映射关系：C盘路径 = D盘子路径
$Mappings = @{
    "$HOME\.m2"           = "$TargetBase\.m2"
    "$HOME\.gradle"       = "$TargetBase\.gradle"
    "$HOME\.npm"          = "$TargetBase\npm-cache"
    "$env:LOCALAPPDATA\pip\cache" = "$TargetBase\pip-cache"
}

foreach ($Source in $Mappings.Keys) {
    $Destination = $Mappings[$Source]

    # 如果 D 盘目标目录不存在，则创建
    if (!(Test-Path $Destination)) {
        New-Item -Path $Destination -ItemType Directory -Force | Out-Null
    }

    if (Test-Path $Source) {
        # 如果 C 盘已经是符号链接，跳过
        $folder = Get-Item $Source
        if ($folder.Attributes -match "ReparsePoint") {
            Write-Host "[跳过] $Source 已经是映射状态" -ForegroundColor Yellow
            continue
        }

        # 移动现有文件到 D 盘
        Write-Host "[处理] 正在搬移 $Source -> $Destination" -ForegroundColor Cyan
        Move-Item -Path "$Source\*" -Destination $Destination -Force -ErrorAction SilentlyContinue
        Remove-Item -Path $Source -Recurse -Force
    }

    # 创建符号链接 (Junction)
    New-Item -Path $Source -ItemType Junction -Value $Destination
    Write-Host "[成功] 已建立链接: $Source" -ForegroundColor Green
}