#!/usr/bin/env ruby
# frozen_string_literal: true
#
# Setup script for trunk.io and RuboCop configuration
# This script creates the necessary configuration files for trunk.io and RuboCop
# based on the Standard Ruby style guide.
#
# Usage: ruby setup_trunk_rubocop.rb [project_root]
#   project_root: Path to your project root (defaults to current directory)

require 'fileutils'
require 'pathname'

# Get project root from argument or use current directory
project_root = Pathname.new(ARGV[0] || Dir.pwd).expand_path

puts "Setting up trunk.io and RuboCop configuration..."
puts "Project root: #{project_root}"

# Create .trunk directory if it doesn't exist
trunk_dir = project_root.join('.trunk')
FileUtils.mkdir_p(trunk_dir)

# Create .trunk/configs directory for isolated configuration
trunk_configs_dir = trunk_dir.join('configs')
FileUtils.mkdir_p(trunk_configs_dir)

# Create .github/workflows directory if it doesn't exist
github_workflows_dir = project_root.join('.github', 'workflows')
FileUtils.mkdir_p(github_workflows_dir)

# Write .trunk/trunk.yaml
trunk_yaml_content = <<~YAML
  # This file controls the behavior of Trunk: https://docs.trunk.io/cli
  # To learn more about the format of this file, see https://docs.trunk.io/reference/trunk-yaml
  version: 0.1
  cli:
    version: 1.25.0
  # Trunk provides extensibility via plugins. (https://docs.trunk.io/plugins)
  plugins:
    sources:
      - id: trunk
        ref: v1.7.4
        uri: https://github.com/trunk-io/plugins
  # Many linters and tools depend on runtimes - configure them here. (https://docs.trunk.io/runtimes)
  runtimes:
    enabled:
      - go@1.21.0
      - node@22.16.0
      - python@3.10.8
      - ruby@>=3.3.0
  # This is the section where you manage your linters. (https://docs.trunk.io/check/configuration)
  lint:
    disabled:
      - brakeman
      - rufo
      - eslint
      - prettier
      - standardrb
      - semgrep
      - oxipng
      - svgo
      - trufflehog
      - shfmt
      - hadolint
    definitions:
      - name: stylelint
        files: [css]
      - name: rubocop
        extra_packages:
          - standard@1.52.0
          - standard-custom@1.0.2
          - standard-rails@1.5.0
          - standard-performance@1.8.0
          - standard-rspec@0.3.1
          - rubocop-rails@2.34.2
          - rubocop-rspec@3.8.0
          - rubocop-thread_safety@0.7.3
    ignore:
      - linters: [ALL]
        paths:
          - bin/**
          - db/schema.rb
          - vendor/**
          - tmp/**
          - log/**
          - storage/**
          - coverage/**
          - uploads/**
    enabled:
      - biome@2.3.8
      - rubocop@1.81.7
      - stylelint@16.26.1
      - yamllint@1.37.1
      - gitleaks@8.29.0
      - actionlint@1.7.8
      - checkov@3.2.495
      - dotenv-linter@4.0.0
      - git-diff-check
      - markdownlint@0.46.0
      - osv-scanner@2.2.4
      - shellcheck@0.11.0
      - trivy@0.67.2
  actions:
    disabled:
      - trunk-announce
      - trunk-check-pre-push
      - trunk-fmt-pre-commit
    enabled:
      - trunk-upgrade-available
YAML

trunk_yaml_path = trunk_dir.join('trunk.yaml')
if trunk_yaml_path.exist?
  print "File #{trunk_yaml_path} already exists. Overwrite? (y/N): "
  response = $stdin.gets.chomp.downcase
  unless response == 'y' || response == 'yes'
    puts "Skipping #{trunk_yaml_path}"
  else
    File.write(trunk_yaml_path, trunk_yaml_content)
    puts "✓ Created #{trunk_yaml_path}"
  end
else
  File.write(trunk_yaml_path, trunk_yaml_content)
  puts "✓ Created #{trunk_yaml_path}"
end

# Write .trunk/configs/.rubocop.yml (for complete isolation)
# You can also place this in project root as .rubocop.yml if preferred
rubocop_yml_content = <<~YAML
  inherit_mode:
    merge:
      - Exclude

  require:
    - standard

  plugins:
    - standard-custom
    - standard-performance
    - rubocop-performance
    - rubocop-rails
    - rubocop-rspec
    - rubocop-thread_safety

  inherit_gem:
    standard: config/base.yml
    standard-performance: config/base.yml
    standard-custom: config/base.yml
    standard-rails: config/base.yml

  AllCops:
    SuggestExtensions: false
    TargetRubyVersion: 3.4
    NewCops: enable
    Exclude:
      - bin/**/*
      - db/**/*
      - vendor/**/*
      - tmp/**/*
      - log/**/*
      - storage/**/*
      - coverage/**/*
      - uploads/**/*
      - .git/**/*
      - node_modules/**/*
      - public/packs/**/*
      - public/packs-test/**/*

  # RSpec-specific configuration
  RSpec/ExampleLength:
    Max: 50

  RSpec/SpecFilePathFormat:
    Enabled: false
    Exclude:
      - spec/**/*

  RSpec/HooksBeforeExamples:
    Enabled: false

  RSpec/MultipleMemoizedHelpers:
    Max: 16

  RSpec/NestedGroups:
    Max: 4

  # Custom cop overrides
  Style/AccessModifierDeclarations:
    EnforcedStyle: inline

  Rails/ActiveRecordCallbacksOrder:
    Enabled: false

  Style/FrozenStringLiteralComment:
    Enabled: false

  Lint/UselessAssignment:
    Enabled: false

  Rails/Exit:
    Exclude:
      - usr/**/*

  ThreadSafety/ClassAndModuleAttributes:
    Enabled: false

  ThreadSafety/ClassInstanceVariable:
    Enabled: false

  ThreadSafety/DirChdir:
    Exclude:
      - "*.gemspec"

  # Strict cops that should never be disabled
  Lint/Debugger:
    Enabled: true
    Exclude: []

  RSpec/Focus:
    Enabled: true
    Exclude: []

  Rails/Output:
    Enabled: true
    Exclude:
      - usr/**/*

  Rails/FindEach:
    Enabled: true
    Exclude: []

  Rails/UniqBeforePluck:
    Enabled: true
    Exclude: []
YAML

rubocop_yml_path = trunk_configs_dir.join('.rubocop.yml')
if rubocop_yml_path.exist?
  print "File #{rubocop_yml_path} already exists. Overwrite? (y/N): "
  response = $stdin.gets.chomp.downcase
  unless response == 'y' || response == 'yes'
    puts "Skipping #{rubocop_yml_path}"
  else
    File.write(rubocop_yml_path, rubocop_yml_content)
    puts "✓ Created #{rubocop_yml_path}"
  end
else
  File.write(rubocop_yml_path, rubocop_yml_content)
  puts "✓ Created #{rubocop_yml_path}"
end

# Write GitHub Actions workflow
github_workflow_content = <<~YAML
  name: _trunk_check
  on: [pull_request]
  concurrency:
    group: ${{ github.head_ref || github.run_id }}
    cancel-in-progress: true
  permissions: read-all
  jobs:
    run_trunk_action:
      runs-on: ubuntu-latest
      permissions:
        checks: write
        contents: read
      steps:
        - uses: actions/checkout@v6
        - uses: ruby/setup-ruby@v1
          with:
            bundler-cache: true
        - uses: trunk-io/trunk-action@v1
YAML

github_workflow_path = github_workflows_dir.join('_trunk_check.yml')
if github_workflow_path.exist?
  print "File #{github_workflow_path} already exists. Overwrite? (y/N): "
  response = $stdin.gets.chomp.downcase
  unless response == 'y' || response == 'yes'
    puts "Skipping #{github_workflow_path}"
  else
    File.write(github_workflow_path, github_workflow_content)
    puts "✓ Created #{github_workflow_path}"
  end
else
  File.write(github_workflow_path, github_workflow_content)
  puts "✓ Created #{github_workflow_path}"
end

puts "\n✓ Setup complete!"
puts "\nNext steps:"
puts "  1. Run: trunk check"
puts "  2. Run: trunk upgrade"
puts "\nNote: With trunk.io's full isolation, you don't need to add RuboCop gems"
puts "      to your Gemfile. trunk.io manages all linter dependencies in its"
puts "      own isolated environment."
puts "\nFor more information, see: https://docs.trunk.io/cli"