# frozen_string_literal: true
require 'json'
require_relative 'image'
require_relative 'imageset'
module XCAssets
  class XCAssets

    attr_reader :name

    def initialize(name)
      @name = name
      @imagesets = []
    end

    def add_imageset(imageset)
      @imagesets << imageset
    end

    def save(directory)
      root = directory.join("#{name}.xcassets")
      root.rmtree if root.exist?
      root.mkpath
      write_imagesets(root)
      write_contents_json(root)
    end

    private

    def write_imagesets(root)
      @imagesets.each do |imageset|
        path = root.join("#{imageset.name}.imageset")
        path.rmtree if path.exist?
        path.mkpath
        imageset.images.each do |image|
          if image.resource
            FileUtils.cp image.resource, path.join(image.filename)
          end
        end
        contents_path = path.join("Contents.json")
        File.open(contents_path, 'w+') do |file|
          file.write JSON.pretty_generate(imageset.contents)
        end
      end
    end

    def assets_filename
      "#{name}.xcassets"
    end
    def write_contents_json(root)
      path = root.join('Contents.json')
      contents = {
        :info => {
          :author => 'xcode',
          :version => 1
        }
      }
      contents_string = JSON.pretty_generate(contents)
      File.open(path, 'w+') do |file|
        file.write contents_string
      end
    end
  end
end