Commit_score.rb

require 'open-uri'
require 'json'

module Github

  COMMIT_TYPE_SCORE_MAPPING = {
    PushEvent: 5,
    PullRequestReviewCommentEvent: 4,
    WatchEvent: 3,
    CreateEvent:  2
  } 

  def self.uri(username)
    if username.nil? 
      nil
    else
      "https://github.com/" + username.to_s + ".json"
    end 	
  end

  def self.get_commits(username)
    begin
      commits_obj = Hash.new	
      commits_obj[:errors] = []
      commits_obj[:commits] = []

      if uri(username).nil?	
        commits_obj[:errors] << "username not provided"
      else
        commits = to_json(URI.parse(uri(username)).read)
        commits_obj[:commits] = commits
        commits_obj[:errors]  = [] 
      end	
    rescue OpenURI::HTTPError => e
      commits_obj[:errors] << e.io.status[1]
      puts commits_obj[:errors]
    end
    
    return commits_obj 	
  end

  def self.to_json(obj_to_transform)
    json = JSON.parse(obj_to_transform.to_s)
    return json
  end

 end


class User
  
  def initialize(username)
    @username = username
  end	
  
  def get_commits
    response = Github.get_commits(@username)
    @commits = []
    response[:commits].each do |commit|
      score = nil
      if Github::COMMIT_TYPE_SCORE_MAPPING.has_key? commit["type"].to_sym
        score = Github::COMMIT_TYPE_SCORE_MAPPING[commit["type"].to_sym]
      else
        score = 1
      end
      @commits << Commit.new(commit["type"], score)  
    end
    @commits	
  end

  def user_score
    get_commits
    score = 0
    @commits.each do |commit|
      score += commit.score
    end
    score    
  end	

end	


class Commit

  attr_reader :type, :score

  def initialize(type, score)
    @type = type
    @score = score
  end	

end	

user = User.new('dhh')

puts user.user_score