class Coupdoeil::InstallGenerator

def add_with_node
  if Rails.root.join("app/javascript/application.js").exist?
    say("Import Coupdoeil")
    append_to_file("app/javascript/application.js", %(import "coupdoeil"\n))
  else
    say("You must import coupdoeil in your JavaScript entrypoint file", :red)
  end
  say("Install Coupdoeil")
  run("yarn add coupdoeil")
end

def append_to_importmap
  puts "Using importmap"
  puts "Pin Coupdoeil"
  append_to_file("config/importmap.rb", %(pin "coupdoeil", to: "coupdoeil.min.js", preload: true\n))
  puts "Import Coupdoeil"
  append_to_file("app/javascript/application.js", %(import "coupdoeil"\n))
end

def create_base_class
  create_file("app/popovers/application_popover.rb", <<~RUBY)
    class ApplicationPopover < Coupdoeil::Popover
    end
  RUBY
end

def hidden_class_requirement
  puts ""
  puts "Also make sure you have a CSS implementation of .hidden class:"
  puts ""
  puts <<-CSS
    .hidden {
        display: none;
    }
  CSS
  puts ""
end

def import_stylesheet
  puts "To use Coupdoeil popover style, add to your layout's head:"
  puts ""
  puts <<-ERB
  <%= stylesheet_link_tag "coupdoeil/popover" %>
  ERB
  puts ""
  puts "Or one of two:"
  puts ""
  puts <<-ERB
  <%= stylesheet_link_tag "coupdoeil/popover-arrow" %>
  <%= stylesheet_link_tag "coupdoeil/popover-animation" %>
  ERB
end

def insert_default_layout
  template("layout.html.erb.tt", "app/popovers/layouts/popover.html.erb")
end

def install_javascripts
  puts ""
  if Rails.root.join("config/importmap.rb").exist?
    append_to_importmap
  elsif Rails.root.join("package.json").exist?
    add_with_node
  else
    puts "You must either be running with node (package.json) or importmap-rails (config/importmap.rb) to use this gem."
  end
end

def install_stylesheets
  puts ""
  import_stylesheet
  hidden_class_requirement
end