Class: Fet::Score

Inherits:
Object
  • Object
show all
Defined in:
lib/fet/score.rb

Overview

Holds the correct/incorrect answers to questions

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(score: nil) ⇒ Score

Returns a new instance of Score.



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# File 'lib/fet/score.rb', line 8

def initialize(score: nil)
  score_hash = score || initialize_score
  score_hash = score_hash.map do |k, v|
    [k.to_i, v.transform_keys(&:to_sym)]
  end.to_h
  self.score = score_hash
end

Class Method Details

.merge(*scores) ⇒ Object 



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# File 'lib/fet/score.rb', line 16

def self.merge(*scores)
  scores.each_with_object(Fet::Score.new) { |x, res| res.merge(x) }
end

Instance Method Details

#answer_correctly(*degree_indices) ⇒ Object 



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# File 'lib/fet/score.rb', line 20

def answer_correctly(*degree_indices)
  degree_indices.each { |degree_index| score[degree_index][:correct] += 1 }
end

#answer_incorrectly(*degree_indices) ⇒ Object 



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# File 'lib/fet/score.rb', line 24

def answer_incorrectly(*degree_indices)
  degree_indices.each { |degree_index| score[degree_index][:incorrect] += 1 }
end

#answered_correctly(degree_index = nil) ⇒ Object 



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# File 'lib/fet/score.rb', line 28

def answered_correctly(degree_index = nil)
  return score.reduce(0) do |result, (score_degree_index, score_hash)|
    degree_index.nil? || score_degree_index == degree_index ? result + score_hash[:correct] : result
  end
end

#answered_incorrectly(degree_index = nil) ⇒ Object 



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# File 'lib/fet/score.rb', line 34

def answered_incorrectly(degree_index = nil)
  return score.reduce(0) do |result, (score_degree_index, score_hash)|
    degree_index.nil? || score_degree_index == degree_index ? result + score_hash[:incorrect] : result
  end
end

#as_json(_options = {}) ⇒ Object 



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# File 'lib/fet/score.rb', line 44

def as_json(_options = {})
  score
end

#merge(other) ⇒ Object 



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# File 'lib/fet/score.rb', line 52

def merge(other)
  score.each do |k, v|
    v[:correct] += other.answered_correctly(k)
    v[:incorrect] += other.answered_incorrectly(k)
  end
end

#percentages ⇒ Object 



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# File 'lib/fet/score.rb', line 59

def percentages
  score.map do |k, _|
    next([k, percentage(answered_correctly(k), questions_asked(k)).to_i])
  end.to_h
end

#questions_asked(degree_index = nil) ⇒ Object 



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# File 'lib/fet/score.rb', line 40

def questions_asked(degree_index = nil)
  return answered_correctly(degree_index) + answered_incorrectly(degree_index)
end

#to_json(*options) ⇒ Object 



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# File 'lib/fet/score.rb', line 48

def to_json(*options)
  as_json(*options).to_json(*options)
end

#total_percentage ⇒ Object 



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# File 'lib/fet/score.rb', line 65

def total_percentage
  return percentage(answered_correctly, questions_asked).to_i
end