$ErrorActionPreference = 'Stop'
$root = Split-Path -Parent $PSScriptRoot
$fe = Join-Path $root 'frontend'
$be = Join-Path $root 'backend'

function Remove-Path([string]$path) {
  if (Test-Path -LiteralPath $path) {
    Remove-Item -LiteralPath $path -Recurse -Force
    Write-Output ("REMOVED " + $path.Substring($root.Length + 1))
  }
}

# frontend directories
@(
  'docs',
  'backups',
  'cloud-functions',
  'outputs',
  'test-results',
  'tmp',
  'scripts',
  'rules'
) | ForEach-Object { Remove-Path (Join-Path $fe $_) }

# frontend softzhu directory if present
Get-ChildItem -LiteralPath $fe -Force -Directory | Where-Object {
  $_.Name -like '*软著*' -or $_.Name -eq '软著申报'
} | ForEach-Object { Remove-Path $_.FullName }

# frontend root clutter
$keepExact = @(
  'src',
  'angular.json',
  'package.json',
  'package-lock.json',
  'tsconfig.json',
  'tsconfig.app.json',
  'proxy.conf.json',
  'README.md'
)

Get-ChildItem -LiteralPath $fe -Force | ForEach-Object {
  $name = $_.Name
  if ($keepExact -contains $name) { return }

  $drop = $false
  if ($name.StartsWith('_')) { $drop = $true }
  elseif ($name -match '\.(md|docx|xlsx|ps1|txt|out|diff|js)$') { $drop = $true }
  elseif ($name -like 'echarts_*') { $drop = $true }
  elseif ($name -like 'cloud-function-*') { $drop = $true }
  elseif ($name -like 'patch-*') { $drop = $true }
  elseif ($name -match '^(ec\d+|safe|scan|usage|findec)(\.|$)') { $drop = $true }

  if ($drop) { Remove-Path $_.FullName }
}

# backend unrelated
@(
  'docs',
  'scripts',
  'rules',
  'IMPLEMENTATION-SUMMARY.md'
) | ForEach-Object { Remove-Path (Join-Path $be $_) }

# module docs/tests
Get-ChildItem -Path (Join-Path $be 'modules') -Recurse -Directory -ErrorAction SilentlyContinue |
  Where-Object { $_.Name -in @('docs','examples','__tests__','test','tests') } |
  ForEach-Object { Remove-Path $_.FullName }

Get-ChildItem -Path (Join-Path $be 'modules') -Recurse -File -Filter '*.md' -ErrorAction SilentlyContinue |
  ForEach-Object { Remove-Path $_.FullName }

Write-Output 'CLEANUP_DONE'