module ElectricProfile
  require 'net/http'
  require 'net/https'
  require 'json'

  class Client
    attr_reader :successful, :data, :error

    def initialize
      raise ArgumentError, 'Customer token is required' unless @customer_token = ENV['ELECTRIC_PROFILE_CUSTOMER_TOKEN']
      raise ArgumentError, 'API URL is required' unless @api_url = ENV['ELECTRIC_PROFILE_API_URL']

      @http_headers = {
        'Content-Type' => 'application/json',
        'Accept' => 'application/json',
        'Accept-Charset' => 'utf-8',
        'User-Agent' => 'electric_profile_ruby',
        'Profiling-Auth-Token' => @customer_token
      }
    end

    def fetch_questions
      uri = URI(@api_url + 'question')
      http_request = Net::HTTP::Get.new uri, @http_headers
      perform_request(uri, http_request)
    end

    def fetch_question(question_id)
      uri = URI(@api_url + 'question?id=' + question_id)
      http_request = Net::HTTP::Get.new uri, @http_headers
      perform_request(uri, http_request)
    end

    def create_question(question_attributes)
      uri = URI(@api_url + 'question')
      http_request = Net::HTTP::Post.new uri, @http_headers
      http_request.body = { "data" => question_attributes }.to_json
      perform_request(uri, http_request)
    end

    def update_question(question_attributes)
      uri = URI(@api_url + 'question')
      http_request = Net::HTTP::Put.new uri, @http_headers
      http_request.body = { "data" => question_attributes }.to_json
      perform_request(uri, http_request)
    end

    def fetch_profilers
      uri = URI(@api_url + 'profiler')
      http_request = Net::HTTP::Get.new uri, @http_headers
      perform_request(uri, http_request)
    end

    def fetch_profiler(profiler_id)
      uri = URI(@api_url + 'profiler?id=' + profiler_id)
      http_request = Net::HTTP::Get.new uri, @http_headers
      perform_request(uri, http_request)
    end

    def create_profiler(profiler_attributes)
      uri = URI(@api_url + 'profiler')
      http_request = Net::HTTP::Post.new uri, @http_headers
      http_request.body = { "data" => profiler_attributes }.to_json
      perform_request(uri, http_request)
    end

    def update_profiler(profiler_attributes)
      uri = URI(@api_url + 'profiler')
      http_request = Net::HTTP::Put.new uri, @http_headers
      http_request.body = { "data" => profiler_attributes }.to_json
      perform_request(uri, http_request)
    end

    private
      def perform_request(uri, http_request)
        use_ssl = @api_url.include? "https"
        http_response = Net::HTTP.start(uri.host, uri.port, use_ssl: use_ssl) do |http|
          http.request http_request
        end

        case http_response
        when Net::HTTPSuccess, Net::HTTPRedirection
          @data = JSON.parse http_response.body
          @successful = true
        else
          @error = "#{http_response.code}: #{http_response.body}"
          @successful = false
        end

        return @successful
      end

  end
end