AlexWayfer/gem_generator

# frozen_string_literal: true

require 'bundler'
require 'project_generator'

require_relative 'command/process_files'

## https://github.com/mdub/clamp#allowing-options-after-parameters
Clamp.allow_options_after_parameters = true

module GemGenerator
    ## Main CLI command for Gem Generator
    class Command < ProjectGenerator::Command
        include ProcessFiles

        parameter 'NAME', 'name of a new gem'
        parameter 'TEMPLATE', 'template path of a new gem'

        option ['-n', '--namespace'], 'NAME', 'use NAME as repository namespace'

        def execute
            check_target_directory

            ## Prevent error like '"FIXME" or "TODO" is not a description' for `bundle install`
            @summary = ask_for_summary

            refine_template_parameter if git?

            process_files

            install_dependencies

            initialize_git

            FileUtils.rm_r @git_tmp_dir if git?

            done
        end

        private

        def ask_for_summary
            require 'readline'

            puts 'Please, write a summary for the gem:'

            result = Readline.readline('> ', true)

            puts <<~TEXT

                Thank you! You can write more detailed description later for `spec.description` and `README.md`.

            TEXT

            ## Give a time to read the hint about description
            # sleep 3

            result
        end

        def install_dependencies
            puts 'Installing dependencies...'

            Dir.chdir name do
                ## Helpful for specs of templates, probably somewhere else
                Bundler.with_unbundled_env do
                    system 'bundle update'
                end

                system 'npm install' if File.exist? 'package.json'
            end
        end
    end
end