upgrade-eslint-v9.ps1

# package.jsonが無ければエラーを表示して終了する
if (-not (Test-Path package.json)) {
  Write-Host "Error: package.json not found." -ForegroundColor Red
  exit 1
}

# package.jsonのeslintがv9以上だったら、v9では動作しないことを表示して終了する
$package_json = Get-Content -Path package.json -Raw | ConvertFrom-Json -AsHashtable
$eslint_version = $package_json.devDependencies.eslint
if ($eslint_version -ge "9.0.0") {
  Write-Host "Error: This script eslint v9 or higher is not supported." -ForegroundColor Red
  exit 1
}

# Remove old eslint files
Remove-Item .eslintignore
Remove-Item .eslintrc.yml

# get package manager (yarn or pnpm)
# yarn: yarn.lockの存在確認
# pnpm: pnpm-lock.yamlの存在確認
if (Test-Path yarn.lock) {
  $package_manager = "yarn"
}
elseif (Test-Path pnpm-lock.yaml) {
  $package_manager = "pnpm"
}
elseif (Test-Path package-lock.json) {
  $package_manager = "npm"
}
else {
  Write-Host "Error: package manager not found." -ForegroundColor Red
  exit 1
}
Write-Host "Selected package manager: $package_manager"

# Remove unused packages
Write-Host "Remove unused packages..."
$remove_packages = @("@typescript-eslint/eslint-plugin", "@typescript-eslint/parser", "eslint", "eslint-config-prettier", "eslint-config-standard", "eslint-plugin-import", "eslint-plugin-n", "eslint-plugin-node", "eslint-plugin-promise", "eslint-plugin-unicorn")
foreach ($package in $remove_packages) {
  if ($package_manager -eq "yarn") {
    yarn remove $package
  }
  elseif ($package_manager -eq "pnpm") {
    pnpm remove $package
  }
  else {
    npm uninstall $package
  }
}

# Install eslint and dependencies
Write-Host "Install eslint and dependencies..."
$install_packages = @("eslint", "eslint-config-standard", "eslint-plugin-import", "eslint-plugin-n", "eslint-plugin-promise", "@book000/eslint-config")
foreach ($package in $install_packages) {
  if ($package_manager -eq "yarn") {
    yarn add -D -E $package
  }
  elseif ($package_manager -eq "pnpm") {
    pnpm add -D -E $package
  }
  else {
    npm install -D -E $package
  }
}

# Create eslint.config.mjs
Write-Host "Create eslint.config.mjs..."
"export { default } from '@book000/eslint-config';" | Out-File -FilePath eslint.config.mjs -Encoding utf8

# Update scripts (lint:eslint, fix:eslint)
Write-Host "Update package.json scripts..."
$package_json = Get-Content -Path package.json -Raw | ConvertFrom-Json -AsHashtable
$package_json.scripts."lint:eslint" = "eslint . -c eslint.config.mjs"
$package_json.scripts."fix:eslint" = "eslint . -c eslint.config.mjs --fix"
$package_json | ConvertTo-Json -Depth 100 | Out-File -FilePath package.json -Encoding utf8

# Add ignore eslint-config-standard to .depcheckrc.json (if exists)
if (Test-Path .depcheckrc.json) {
  Write-Host "Add ignore eslint-config-standard to .depcheckrc.json..."
  $depcheckrc = Get-Content -Path .depcheckrc.json -Raw | ConvertFrom-Json -AsHashtable
  $ignore_packages = @("eslint-config-standard", "eslint-plugin-import", "eslint-plugin-n", "eslint-plugin-promise")
  $depcheckrc.ignores = $depcheckrc.ignores | Where-Object { $_ -notin $ignore_packages }
  $depcheckrc.ignores += $ignore_packages
  $depcheckrc | ConvertTo-Json -Depth 100 | Out-File -FilePath .depcheckrc.json -Encoding utf8
}
else {
  Write-Host "Create .depcheckrc.json..."
  $depcheckrc = @{
    ignores = @("eslint-config-standard", "eslint-plugin-import", "eslint-plugin-n", "eslint-plugin-promise")
  }
  $depcheckrc | ConvertTo-Json -Depth 100 | Out-File -FilePath .depcheckrc.json -Encoding utf8
}

# Upgrade interactive
Write-Host "Upgrade interactive..."
if ($package_manager -eq "yarn") {
  yarn upgrade-interactive --latest
}
elseif ($package_manager -eq "pnpm") {
  pnpm upgrade --interactive --latest
}
else {
  npx npm-check --update
}

# Recreate lock file
Write-Host "Recreate lock file..."
if ($package_manager -eq "yarn") {
  Remove-Item yarn.lock
  yarn install
}
elseif ($package_manager -eq "pnpm") {
  Remove-Item pnpm-lock.yaml
  pnpm install
}
else {
  Remove-Item package-lock.json
  npm install
}

# Run eslint (auto fix)
Write-Host "Run eslint (auto fix)..."
if ($package_manager -eq "yarn") {
  yarn run fix
}
elseif ($package_manager -eq "pnpm") {
  pnpm run fix
}
else {
  npm run fix
}

# Run fixpack
Write-Host "Run fixpack..."
npx fixpack

# Run depcheck
Write-Host "Run depcheck..."
npx depcheck

# Done
Write-Host "Done!"