github_score_solution.rb

['json','rest-client','pry'].each {|lib| require lib}

module Helper
  def self.get_data_from_api(url)
    response = RestClient.get url
    response.force_encoding('utf-8')
    JSON.parse response
  end
end

module Rule
  COMMIT_TYPE_SCORE_MAP = {
    :PushEvent => 5,
    :PullRequestReviewCommentEvent => 4,
    :WatchEvent => 3,
    :CreateEvent => 2
  }

  def self.score(commit_type)
    if COMMIT_TYPE_SCORE_MAP.has_key? commit_type.to_sym
      COMMIT_TYPE_SCORE_MAP[commit_type.to_sym]
    else
      1
    end
  end
end

class Commit
  attr_reader :type, :score
  def initialize(type, score)
    @type = type
    @score = score
  end
end

class User
  attr_reader :commits
  def initialize(data)
    @commits = []
    data.each do |entry|
      commit_type = entry["type"]
      @commits << Commit.new(commit_type,Rule.score(commit_type))
    end
  end

  def user_score
    @commits.inject(0) {|final_score, commit| final_score + commit.score }
  end
end

data = Helper.get_data_from_api("https://github.com/dhh.json")
user = User.new(data)
puts user.user_score