param(
  [string]$Phase14Root = "",
  [string]$DiffArtifactDir = "",
  [string]$OutputDir = "",
  [string]$ArtifactRoot = ""
)

$ErrorActionPreference = "Stop"

$repoRoot = (Resolve-Path (Join-Path $PSScriptRoot "..")).Path
if (-not (Test-Path "$HOME\.Codex\skills\gstack\bin")) {
  throw "GSTACK_MISSING: gstack is required for AI-assisted work in this repo."
}

if ([string]::IsNullOrWhiteSpace($Phase14Root)) {
  $Phase14Root = Join-Path $repoRoot "project-docs\phase14-legal-fulltext-library"
}
if ([string]::IsNullOrWhiteSpace($DiffArtifactDir)) {
  $diffRoot = Join-Path $repoRoot "project-docs\qa-artifacts\legal-source-diff-report"
  $latest = Get-ChildItem $diffRoot -Directory | Where-Object { Test-Path (Join-Path $_.FullName "legal-source-diff-report.json") } | Sort-Object Name -Descending | Select-Object -First 1
  if ($null -eq $latest) {
    throw "No legal-source-diff-report artifact found under $diffRoot"
  }
  $DiffArtifactDir = $latest.FullName
}
if ([string]::IsNullOrWhiteSpace($OutputDir)) {
  $OutputDir = Join-Path $Phase14Root "incremental-batches"
}
if ([string]::IsNullOrWhiteSpace($ArtifactRoot)) {
  $ArtifactRoot = Join-Path $repoRoot "project-docs\qa-artifacts\phase14-incremental-batch-plan"
}

$timestamp = Get-Date -Format "yyyy-MM-ddTHH-mm-ss-fff"
$artifactDir = Join-Path $ArtifactRoot $timestamp
New-Item -ItemType Directory -Force -Path $artifactDir | Out-Null
New-Item -ItemType Directory -Force -Path $OutputDir | Out-Null

$toolPath = Join-Path $repoRoot "backend\tools\plan_phase14_incremental_batches.py"
$toolOutput = & python $toolPath `
  --phase14-root $Phase14Root `
  --diff-artifact-dir $DiffArtifactDir `
  --output-dir $OutputDir `
  --artifact-dir $artifactDir

$toolExitCode = if ($LASTEXITCODE -is [int]) { $LASTEXITCODE } else { 0 }
($toolOutput -join [Environment]::NewLine) | Set-Content -Encoding UTF8 -Path (Join-Path $artifactDir "phase14-incremental-batch-plan-tool.log")
if ($toolExitCode -ne 0) {
  throw "plan_phase14_incremental_batches.py failed with exit code $toolExitCode."
}

Write-Host "PHASE14_INCREMENTAL_BATCH_PLAN_PASS $artifactDir"
Write-Output ($toolOutput -join [Environment]::NewLine)