require 'rest-client'
require 'retries'
require 'json'
require_relative '../exceptions'

module Pruning
  module Repos
    class Tree
      def initialize(client=RestClient, base_url)
        @client = client
        @base_url = base_url
      end

      def get(name)
        with_retries(max_tries: 3, rescue: [Pruning::Exceptions::ServerErrorOnOrigin]) do
          begin
            resp = @client.get(url(name))
          rescue RestClient::ExceptionWithResponse => e
            if e.response.code != 404 
              raise Pruning::Exceptions::ServerErrorOnOrigin
            else 
              raise Pruning::Exceptions::OriginCannotFindTheResource
            end
          end
          return JSON(resp.body)
        end
        raise Pruning::Exceptions::UnexpectedError
      end

      private 
      def url(name)
        "#{@base_url}/tree/#{name}"
      end
    end
  end
end