stealth console!

Gemfile.lock

@@ -7,6 +7,7 @@ PATH
       hanami-router (~> 1.0)
       hanami-utils (~> 1.0)
       hanami-validations (~> 1.0)
+      thor (~> 0.20)
 
 GEM
   remote: https://rubygems.org/
@@ -75,6 +76,7 @@ GEM
     rspec-support (3.6.0)
     rspec_junit_formatter (0.3.0)
       rspec-core (>= 2, < 4, != 2.12.0)
+    thor (0.20.0)
     transproc (1.0.2)
     url_mount (0.2.1)
       rack

bin/stealth

@@ -1,5 +1,5 @@
 #!/usr/bin/env ruby
 
 require 'bundler'
-require 'hanami/cli'
+require 'stealth/cli'
 Stealth::Cli.start

lib/stealth/cli.rb

@@ -0,0 +1,36 @@
+require 'thor'
+require 'stealth/cli_base'
+require 'stealth/commands/console'
+
+module Stealth
+  class Cli < Thor
+    extend CliBase
+
+    desc 'version', 'Prints stealth version'
+    long_desc <<-EOS
+    `stealth version` prints the version of the bundled stealth gem.
+    EOS
+    def version
+      require 'stealth/version'
+      puts "v#{ Stealth::VERSION }"
+    end
+    map %w{--version -v} => :version
+
+    desc 'console', 'Starts a stealth console'
+    long_desc <<-EOS
+    `stealth console` starts the interactive stealth console.
+
+    $ > stealth console --engine=pry
+    EOS
+    method_option :environment, desc: 'Path to environment configuration (config/environment.rb)'
+    method_option :engine, desc: "Choose a specific console engine: (#{Stealth::Commands::Console::ENGINES.keys.join('/')})"
+    method_option :help, desc: 'Displays the usage method'
+    def console
+      if options[:help]
+        invoke :help, ['console']
+      else
+        Stealth::Commands::Console.new(options).start
+      end
+    end
+  end
+end

lib/stealth/cli_base.rb

@@ -0,0 +1,22 @@
+module Stealth
+  module CliBase
+    def define_commands(&blk)
+      class_eval(&blk) if block_given?
+    end
+
+    def banner(command, nspace = true, subcommand = false)
+      super(command, nspace, namespace != 'stealth:cli')
+    end
+
+    def handle_argument_error(command, error, args, arity)
+      name = [(namespace == 'stealth:cli' ? nil : namespace), command.name].compact.join(" ")
+
+      msg = "ERROR: \"#{basename} #{name}\" was called with "
+      msg << "no arguments"               if     args.empty?
+      msg << "arguments " << args.inspect unless args.empty?
+      msg << "\nUsage: #{banner(command).inspect}"
+
+      raise Thor::InvocationError, msg
+    end
+  end
+end

lib/stealth/commands/command.rb

@@ -0,0 +1,11 @@
+require 'stealth'
+
+module Stealth
+  module Commands
+    class Command
+      def initialize(options)
+
+      end
+    end
+  end
+end

lib/stealth/commands/console.rb

@@ -0,0 +1,70 @@
+require 'stealth/commands/command'
+
+module Stealth
+  module Commands
+    # REPL that supports different engines.
+    #
+    # It is run with:
+    #
+    #   `bundle exec stealth console`
+    class Console < Command
+      module CodeReloading
+        def reload!
+          puts 'Reloading...'
+          Kernel.exec "#{$PROGRAM_NAME} console"
+        end
+      end
+
+      # Supported engines
+      ENGINES = {
+        'pry'  => 'Pry',
+        'ripl' => 'Ripl',
+        'irb'  => 'IRB'
+      }.freeze
+
+      DEFAULT_ENGINE = ['irb'].freeze
+
+      attr_reader :options
+
+      def initialize(options)
+        super(options)
+
+        @options = options
+      end
+
+      def start
+        prepare
+        engine.start
+      end
+
+      def engine
+        load_engine options.fetch(:engine) { engine_lookup }
+      end
+
+    private
+
+      def prepare
+        # Clear out ARGV so Pry/IRB don't attempt to parse the rest
+        ARGV.shift until ARGV.empty?
+
+        # Add convenience methods to the main:Object binding
+        TOPLEVEL_BINDING.eval('self').__send__(:include, CodeReloading)
+      end
+
+      def engine_lookup
+        (ENGINES.find { |_, klass| Object.const_defined?(klass) } || DEFAULT_ENGINE).first
+      end
+
+      def load_engine(engine)
+        require engine
+      rescue LoadError
+      ensure
+        return Object.const_get(
+          ENGINES.fetch(engine) do
+            raise ArgumentError.new("Unknown console engine: `#{engine}'")
+          end
+        )
+      end
+    end
+  end
+end

stealth.gemspec

@@ -16,6 +16,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'hanami-router',      '~> 1.0'
   s.add_dependency 'hanami-controller',  '~> 1.0'
   s.add_dependency 'dotenv', '~> 2.0'
+  s.add_dependency 'thor', '~> 0.20'
 
   s.add_development_dependency 'rspec', '~> 3.6.0'
   s.add_development_dependency 'rspec_junit_formatter', '~> 0.3.0'