require "net/https"
require "uri"

module Manymo
  class Service
    HOST= ENV["MANYMO_API_HOST"] || "www.manymo.com"
    BASE_URL="https://#{HOST}/api/v1"
    def get_auth_token(force = false)
      manymo_config_dir = File.expand_path('~/.manymo')
      auth_token_path = manymo_config_dir + '/auth_token'
      if ! force and File.exists?(auth_token_path)
        return File.read(auth_token_path)
      else
        print "Please visit https://#{HOST}/user/client_applications to get your authorization token. Enter it here: "
        STDOUT.flush
        auth_token = STDIN.gets.chomp
        if auth_token.empty?
          STDERR.puts "No token supplied. Exiting."
          exit 1
        else
          begin
            if !File.exists?(manymo_config_dir)
              FileUtils.mkdir(manymo_config_dir)
            end
            File.open(auth_token_path, "w") do |auth_token_path_file_handle|
              auth_token_path_file_handle.write(auth_token)
            end
          rescue Errno::EACCES
            STDERR.puts "Unable to store api token in #{auth_token_path}. You will be prompted again, next time this command is run."
          end
        end
        return auth_token
      end
    end

    def get(endpoint)
      auth_token = get_auth_token
      #puts "Auth token: #{auth_token}"
      uri = URI.parse(BASE_URL + endpoint)
      http = Net::HTTP.new(uri.host, uri.port)
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE
      if uri.scheme == 'https'
        http.use_ssl = true
      end
      
      request = Net::HTTP::Get.new(uri.request_uri)
      request["Authorization"] = "OAuth token=#{auth_token}"
      request["Accept"] = "text/plain"
      
      begin
        response = http.request(request)
        if response.code.to_i / 100 == 2
          response.body
        elsif response.code.to_i == 401
          puts "Invalid authorization token."
          get_auth_token(true)
          get(endpoint)
        else
          STDERR.puts "Error #{response.code}: #{response.body}"
          exit 1
        end
      rescue SystemExit, Interrupt
        exit 1
      rescue Exception => e
        STDERR.puts "Error: #{e.inspect}"
        STDERR.puts "Please check that your network is connected and that no firewall rules are blocking #{uri.scheme} requests."
        exit 1
      end    
    end
  end
end