Migrate a set of resources from terragrunt folders into a single terraform state with multiple modules.

MigrateTerragruntToTerraform.ps1

<#
This is a script that scrapes terraform for a set of terragrunt folders and extracts all the resources to 
generate a set of `terraform import` statements that can be used to import the existing state into the
Terraform state.  Note: This uses the `address` field of the resource to generate the import statement.
For resources like access policies that is not actually correct because the address uses `/` separators 
for everything and the import expects them to be broken into three space separated components.  You need
to identify these (mostly stuff with a `role/blahblah` in the path) and separate the role, account, and
project segments manually.
#>
cd $PSScriptRoot
cls
$modules = dir .\deploy\terragrunt -Directory | select -exp Name
$modules = @("pubsub")

$es = @("test", "stg", "prd") | select -First 1
foreach ($e in $es)
{
    Write-Host "================  Creating $e =================" -ForegroundColor Yellow
    $ms = Join-Path $PSScriptRoot "migrate-$e.ps1"
    #Remove-Item $ms -ErrorAction SilentlyContinue
    swe $e
    #$env:TF_VAR_environment = $e

    foreach($m in $modules)
    {
        Write-Host " ----- Generating imports for $m ----- " -ForegroundColor DarkYellow
        Add-Content -Path $ms "# Module $m"

        cd (Join-Path $PSScriptRoot deploy\terragrunt $m)
        tg init -reconfigure
        $state = tg show -json | ConvertFrom-Json
        $root = $state.values.root_module
        foreach ($r in $root.resources)
        {
            if($r.mode -eq "data")
            {
                continue;
            }
            $migrateCommand = "terraform import 'module.$m.$($r.address)' '$($r.values.id)'"
            Write-Host $migrateCommand -ForegroundColor Blue
            Add-Content -Path $ms $migrateCommand
        }
        foreach ($child in $root.child_modules)
        {
            foreach ($r in $child.resources)
            {
                if($r.mode -eq "data")
                {
                    continue;
                }
                $migrateCommand = "terraform import 'module.$m.$($r.address)' '$($r.values.id)'"
                Write-Host $migrateCommand -ForegroundColor Blue
                Add-Content -Path $ms $migrateCommand
            }
        }
    }
}

cd $PSScriptRoot