Class: RailsAiContext::Watcher

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_ai_context/watcher.rb

Overview

File system watcher that regenerates context files when key files change. Requires the ‘listen` gem (optional dependency).

Constant Summary collapse

DEBOUNCE_SECONDS = 
2
WATCH_PATTERNS = 
%w[
  app/models
  app/controllers
  app/jobs
  app/mailers
  app/javascript/controllers
  config
  db
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app = nil) ⇒ Watcher

Returns a new instance of Watcher.



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# File 'lib/rails_ai_context/watcher.rb', line 20

def initialize(app = nil)
  @app = app || Rails.application
  @last_fingerprint = Fingerprinter.compute(@app)
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/rails_ai_context/watcher.rb', line 18

def app
  @app
end

Instance Method Details

#start ⇒ Object 



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# File 'lib/rails_ai_context/watcher.rb', line 25

def start
  require "listen"

  root = app.root.to_s
  dirs = WATCH_PATTERNS.map { |p| File.join(root, p) }.select { |d| Dir.exist?(d) }

  if dirs.empty?
    $stderr.puts "[rails-ai-context] No watchable directories found"
    return
  end

  # One-time v5.0.0 legacy UI-pattern files warning (warn_only: no prompt in watch mode)
  LegacyCleanup.prompt_legacy_files(
    RailsAiContext.configuration.ai_tools,
    root: root,
    warn_only: true
  )

  $stderr.puts "[rails-ai-context] Watching for changes..."
  $stderr.puts "[rails-ai-context] Directories: #{dirs.map { |d| d.sub("#{root}/", '') }.join(', ')}"

  listener = Listen.to(*dirs) do |modified, added, removed|
    next if (modified + added + removed).empty?
    handle_change
  end

  listener.start

  # Keep the process alive
  loop do
    sleep 1
  rescue Interrupt
    $stderr.puts "\n[rails-ai-context] Stopping watcher..."
    listener.stop
    break
  end
rescue LoadError
  $stderr.puts "Error: The `listen` gem is required for watch mode."
  $stderr.puts "Add to your Gemfile:  gem 'listen', group: :development"
  exit 1
end