# Core
require "file_utils"

# Internal
require "./config"

# Shards
require "term-prompt"

module DocMachine::Scaffolder
  class Run
    private property config : DocMachine::Scaffolder::Config

    def initialize(@config)
    end

    # Verify parameters
    def prepare()
      if ! File.directory? @config.target_directory
        STDERR.puts "ERROR: target must be a directory"
        exit 1
      end

      puts "Target directory: #{@config.target_directory}"

      if !@config.force
        prompt = Term::Prompt.new
        confirm = prompt.no?("Are you sure you want to proceed?")
        exit 1 if !confirm
      end
    end

    def start()
      puts "== Scaffolding #{@config.target_directory}"
      p = Path.new(@config.target_directory)
      cwd = Dir.current
      ["docs", "slides", "images"].each do |dir|
        p_sub = p.join(dir)
        puts "-- creating #{p_sub}"
        FileUtils.mkdir_p(p_sub)
      end
      ["docs", "slides"].each do |dir|
        p_sub = p.join(dir)
        FileUtils.cd(p_sub)
        puts "-- creating link to images in #{p_sub}"
        if File.symlink? "images"
          FileUtils.rm "images"
        end
        FileUtils.ln_sf(Path.new("..","images"), Path.new("images"))
        FileUtils.cd(cwd)
      end
      puts "-- creating README.md"
      FileUtils.touch("README.md")
    end

    # Verify parameters
    def wait()
    end
  end
end