#!/usr/bin/env ruby

require 'thor'
require 'fileutils'
require 'colorize'

module Helper
  extend self

  def copy_with_path src, destionation
    target_dir = File.dirname(destionation)

    FileUtils.mkdir_p(target_dir) unless Dir.exists?(target_dir)
    FileUtils.cp src, destionation
  end

  def die text
    puts text.red
    exit
  end

  def glob_files root_folders
    Cli.die './app not found, not in Rails root' unless Dir.exists?('%s/app' % Dir.pwd)

    root_folder = `gem which flowcommerce-solidus`.chomp.sub('/lib/flowcommerce-solidus.rb', '/static')

    files = root_folders.inject([]) do |total, folder|
      total += Dir['%s/%s/**/*' % [root_folder, folder]]
    end

    files = files
      .map { |f| f.sub('%s/' % root_folder, '') }
      .select{ |f| f =~ /\.\w+$/ }

    has_different_size_file = false

    files.each do |file|
      source = [root_folder, file].join('/')
      target = [Dir.pwd, file].join('/')

      do_copy = if File.exists?(target)
        if File.size(target) == File.size(source)
          print 'same size'.rjust(15).green
        else
          print 'different size'.rjust(15).blue
          has_different_size_file = true
        end

        false
      else
        print 'copied'.rjust(15).green
        true
      end

      Helper.copy_with_path source, target if do_copy

      puts ' %s' % file
    end

    puts
    puts ' '*14+'* files with different sizes you have to first deleted or renamed'.yellow if has_different_size_file
    puts ' '*14+'* checked %d files'.yellow % files.length
  end
end

###

class FlowcommerceSolidus < Thor
  desc 'install', 'Installs Flow Solidus libs in current installation, if missing.'
  def install
    Helper.glob_files ['app/flow', 'app/views/spree/shared', 'lib']
  end

  desc 'install_admin_views', 'Installs views (erb templates) in ./app/views/admin'
  def install_admin_views
    Helper.glob_files ['app/views/spree/admin']
  end

  desc 'install_email_views', 'Installs custom Flow views (erb templates) for email localization'
  def install_email_views
    Helper.glob_files ['app/views/spree/order_mailer']
  end

  desc 'dev_copy [folder]','Copy files from local solids to gem', :hide => true
  def copy_to_gem solidus_folder=nil
    Cli.die 'Solidus target folder not defined' unless solidus_folder
    Cli.die './app not found' unless Dir.exists?('%s/app' % solidus_folder)
    Cli.die 'Not executed in gem root folder' unless $0.include('/flowcommerce-solidus/bin')

    `rm -rf ./static`
    `mkdir ./static`

    # add flow folder
    files  = Dir['%s/app/flow/**/*' % solidus_folder]

    # admin view changes
    files += Dir['%s/app/views/admin/*' % solidus_folder]

    # add rake tasks
    files += ['%s/lib/tasks/flow.rake' % solidus_folder]

    # relativise paths and remove folders
    files  = files
      .map { |f| f.sub(solidus_folder+'/', '') }
      .select{ |f| f =~ /\.\w+$/ }

    # copy file to ./static dir in gem home
    files.each do |file|
      source = [solidus_folder, file].join('/')
      target = './static/%s' % file

      Helper.copy_with_path source, target
    end

    puts files

    puts 'Copied %d files to ./static'.green % files.length
  end
end

FlowcommerceSolidus.start ARGV