Package chrome extension

package_chrome_extension.rb

# Chrome Extension Packer
#
# This removes .git, development files and other files specified and then packages up a chrome extension.
# By default the manifest.json that lives in the directory is removed (local development links etc). And replaced with the manifest.json.production file.

require 'find'
require 'fileutils'
require 'json'

extension_directory   = "/chrome/"

@production_extension  = "production"
@development_extension = %w(development)

@purge_file_types = %w(idraw svg)
@remove_files     = ".DS_Store"

@development_files = %w( manifest.json )
@production_files  = %w( manifest.json.production )

@output_filename = "smt-chrome"

@output_directory = Dir.pwd

@remove_git = true

def read_in_manifest_version(manifest_file)
  @version ||= JSON.parse(File.read(manifest_file))["version"]
end

def walk(start)
  Dir.foreach(start) do |x|
    path = File.join(start, x)
    if x == "." or x == ".."
      next
    elsif File.directory?(path)
      # puts path + "/" # remove this line if you want; just prints directories
      walk(path)
    else
      if File.basename(path) == "manifest.json"
        read_in_manifest_version(path)
      end
      # puts x
    end
  end
end

def walk_remove(start, filename)
  Dir.foreach(start) do |x|
    path = File.join(start, x)
    if x == "." or x == ".."
      next
    elsif File.directory?(path)
      # puts path + "/" # remove this line if you want; just prints directories
      walk_remove(path, filename)
    else
      if File.basename(path) == filename
        puts "Removing File [#{filename}]"
        FileUtils.remove_file(path)
        return
      end

      # puts x
    end
  end
end

def walk_rename(start, filename)
  Dir.foreach(start) do |x|
    path = File.join(start, x)
    if x == "." or x == ".."
      next
    elsif File.directory?(path)
      # puts path + "/" # remove this line if you want; just prints directories
      walk_rename(path, filename)
    else
      if File.basename(path) == filename
        new_file_name = path.gsub(".#{@production_extension}","")
        puts "Renaming File [#{filename}] to [#{new_file_name}]"
        FileUtils.mv(path, new_file_name)
        # FileUtils.remove_file(path)
        return
      end

      # puts x
    end
  end
end

def zip_directory(source)
  filename = @output_filename
  # path = Rails.root.to_s + "/public/tmpFiles"
  archive = @output_directory + "/" + filename + "@" + @version + ".zip"
  # puts "Path: #{source}"
  # puts "Archive: #{archive}"
  `rm "#{archive}"` if File.exists?(archive) # remove the archive file, if it exists.
  `zip -r "#{archive}" "#{source}"` # zip the contents of the directory
  puts "Created Release Zip: #{archive}"
end


# copy files into new directory
# traverse directory.
# remove purge_file_types

# skips the .git folder
def copy_without_git(source_path, target_path)
  Find.find(source_path) do |source|
    target = source.sub(/^#{source_path}/, target_path)
    if File.directory? source
      Find.prune if File.basename(source) == '.git'
      FileUtils.mkdir target unless File.exists? target
    else

      if @purge_file_types.include?(File.extname(source).gsub(".","")) || @remove_files.include?(File.basename(source))
        puts "Removing file #{File.basename(source)}"
      else
        FileUtils.copy source, target
      end

    end
  end
end

def remove_development_files(source)

  @development_files.each do |filename|
    walk_remove(source, filename)
  end

end

def rename_production_files(source)

  @production_files.each do |filename|
    walk_rename(source, filename)
  end

end

# remove development files
# rename production files
# zip
# delete directory

temp_directory = Dir.pwd + "/chrome_temp/"
full_directory = Dir.pwd + "/" + extension_directory

puts "Copying files"
copy_without_git full_directory, temp_directory
walk(temp_directory)

puts "Removing and renaming files"
remove_development_files(temp_directory)
rename_production_files(temp_directory)

puts "Zipping temp directory"
zip_directory(temp_directory)

puts "Removing temp directory"
FileUtils.rm_r temp_directory

Added reading in manifest.json to put the version in the filename.