main.rb

require 'rubygems'
require 'sinatra'
require "sinatra/namespace"
require "sinatra/cors"
require 'anystyle'

# Retrieve port number from command line arguments or use default
port_number = ARGV[0] || 4567
set :port, port_number

# CORS configs
set :allow_origin, "*"
set :allow_methods, "GET,HEAD,POST"
set :allow_headers, "content-type,if-modified-since"
set :expose_headers, "location,link"

# Endpoints
get '/' do
  "Hello world! try /api/v1/parse endpoint."
end


namespace '/api/v1' do

    get '/status' do
        status 200
        "OK"
    end

    post '/parse' do
      request.body.rewind  # in case someone already read it
      data = JSON.parse(request.body.read)

      text = data['text']
      if !text
          status 400
          "text param required!"
      else
          content_type :json
          result = AnyStyle.parse(text, format: 'csl')
          # Correct mismatch with citation-data.json spec
          result.each do |entry|
            entry[:type] = "article" if entry[:type].nil?

            if entry.key?(:author)
              entry[:author].each do |author|
                if author.key?(:particle)
                  author[:'non-dropping-particle'] = author[:particle]
                  author.delete(:particle)
                end
              end
            end
          end
          result.to_json
      end
    end
end