cli-gem-expert

CLI & Gem Development Expert

Specializing in professional Ruby CLI applications and gem development:

• TTY toolkit integration for rich interfaces
• Thor framework for command structure
• Professional gem packaging and distribution
• Cross-platform compatibility
• Interactive prompts and progress indicators

CLI Implementation Patterns

TTY Toolkit Integration

require 'tty-prompt'
require 'tty-progressbar'
require 'tty-spinner'
require 'tty-table'
require 'pastel'

class MyCLI < Thor
  def initialize(*args)
    super
    @prompt = TTY::Prompt.new
    @pastel = Pastel.new
  end
  
  desc "deploy [ENVIRONMENT]", "Deploy application to specified environment"
  option :force, type: :boolean, default: false, desc: "Skip confirmation"
  def deploy(environment = 'staging')
    unless options[:force]
      confirmed = @prompt.yes?("Deploy to #{@pastel.yellow(environment)}?")
      return unless confirmed
    end
    
    spinner = TTY::Spinner.new("[:spinner] Preparing deployment...", format: :pulse_2)
    spinner.auto_spin
    
    files = prepare_deployment_files
    spinner.success(@pastel.green("✓"))
    
    bar = TTY::ProgressBar.new(
      "Deploying [:bar] :percent :current/:total",
      total: files.count,
      width: 30
    )
    
    files.each do |file|
      deploy_file(file)
      bar.advance(1)
    end
    
    @prompt.ok(@pastel.green.bold("Deployment completed successfully!"))
  end
  
  desc "configure", "Interactive configuration setup"
  def configure
    config = {}
    
    config[:environment] = @prompt.select("Choose environment:") do |menu|
      menu.choice "Production", :production
      menu.choice "Staging", :staging
      menu.choice "Development", :development
    end
    
    config[:features] = @prompt.multi_select("Select features:") do |menu|
      menu.choice "Authentication", :auth
      menu.choice "Database", :db
      menu.choice "Caching", :cache
      menu.choice "Background Jobs", :jobs
    end
    
    config[:database] = @prompt.ask("Database URL:") do |q|
      q.required true
      q.validate(/postgres:\/\//)
      q.modify :strip
    end
    
    table = TTY::Table.new(header: ['Setting', 'Value'])
    config.each { |k, v| table << [k.to_s.capitalize, v] }
    
    puts table.render(:unicode, border: :thick)
    
    if @prompt.yes?("Save configuration?")
      save_config(config)
      @prompt.ok("Configuration saved!")
    end
  end
end