module Docs
extend self
def call(env)
request = ActionDispatch::Request.new env
version = Api.const_get request.params[:version].upcase
Rack::Response.new.tap do |response|
if request.path.ends_with?('json')
response.body = [ swagger_json(version) ]
else
json_path = request.path + '.json'
response.body = [ swagger_page(json_path) ]
end
end
end
private
def swagger_json(version)
Swagger::Blocks.build_root_json([ version::Docs ]).to_json
end
def swagger_page(json)
renderer.render inline: <<-ERB, locals: { json: json }
<html>
<head>
<%= stylesheet_link_tag 'swagger-ui' %>
<%= javascript_include_tag 'swagger-ui' %>
</head>
<body class='swagger-section'>
<%= render 'swagger_ui/swagger_ui', discovery_url: json %>
</body>
</html>
ERB
end
def renderer
ActionView::Base.new ActionController::Base.view_paths
end
class Railtie < Rails::Railtie
initializer 'docs.append_route' do |app|
app.routes.append do
get 'api/:version/docs' => Docs
end
end
end
end