Module: Legion::API::Routes::GraphQL

Defined in:
lib/legion/api/graphql.rb

Class Method Summary collapse

Class Method Details

.graphiql_html ⇒ Object 



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# File 'lib/legion/api/graphql.rb', line 53

def self.graphiql_html
  <<~HTML
    <!DOCTYPE html>
    <html>
      <head>
        <title>LegionIO GraphiQL</title>
        <link href="https://cdn.jsdelivr.net/npm/graphiql@3/graphiql.min.css" rel="stylesheet" />
      </head>
      <body style="margin:0">
        <div id="graphiql" style="height:100vh"></div>
        <script crossorigin src="https://cdn.jsdelivr.net/npm/react@18/umd/react.development.js"></script>
        <script crossorigin src="https://cdn.jsdelivr.net/npm/react-dom@18/umd/react-dom.development.js"></script>
        <script crossorigin src="https://cdn.jsdelivr.net/npm/graphiql@3/graphiql.min.js"></script>
        <script>
          const root = ReactDOM.createRoot(document.getElementById('graphiql'));
          root.render(React.createElement(GraphiQL, {
            fetcher: GraphiQL.createFetcher({ url: '/api/graphql' })
          }));
        </script>
      </body>
    </html>
  HTML
end

.registered(app) ⇒ Object 



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# File 'lib/legion/api/graphql.rb', line 11

def self.registered(app)
  app.post '/api/graphql' do
    content_type :json
    Legion::Logging.debug "API: POST /api/graphql params=#{params.keys}" if defined?(Legion::Logging)

    body_str = request.body.read
    payload  = body_str.empty? ? {} : Legion::JSON.load(body_str)
    payload  = payload.transform_keys(&:to_sym) if payload.is_a?(Hash)

    query          = payload[:query]
    variables      = payload[:variables] || {}
    operation_name = payload[:operationName]

    if query.nil? || query.strip.empty?
      Legion::Logging.warn 'API POST /api/graphql returned 400: query is required' if defined?(Legion::Logging)
      status 400
      next Legion::JSON.dump({
                               errors: [{ message: 'query is required' }]
                             })
    end

    result = Legion::API::GraphQL::Schema.execute(
      query,
      variables:      variables,
      operation_name: operation_name,
      context:        { request: request }
    )

    status 200
    Legion::JSON.dump(result.to_h)
  rescue StandardError => e
    Legion::Logging.error "API POST /api/graphql: #{e.class} — #{e.message}" if defined?(Legion::Logging)
    status 500
    Legion::JSON.dump({ errors: [{ message: e.message }] })
  end

  app.get '/api/graphql' do
    content_type 'text/html'
    Legion::API::Routes::GraphQL.graphiql_html
  end
end