Class: WordleDecoder::Word

Inherits:
Object
  • Object
show all
Defined in:
lib/wordle_decoder/word.rb

Constant Summary collapse

COMMON_LETTERS = 
%w[s e a o r i l t n].freeze
PENALTY_LETTERS_COUNT = 
5
COMMONALITY_SCORES = 
{ most: 2, less: 1, least: 0 }.freeze

Instance Method Summary collapse

Constructor Details

#initialize(word_str, word_position, commonality = nil) ⇒ Word

Returns a new instance of Word.



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# File 'lib/wordle_decoder/word.rb', line 5

def initialize(word_str, word_position, commonality = nil)
  @word_str = word_str
  @word_position = word_position
  @commonality = commonality
end

Instance Method Details

#black_chars ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 63

def black_chars
  @black_chars ||= find_chars(@word_position.black_letter_positions)
end

#chars ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 25

def chars
  @chars ||= @word_str.chars
end

#common_letter_score ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 32

def common_letter_score
  if @word_position.line_index <= 1
    [(chars & COMMON_LETTERS).count, 3].min
  else
    letters_count = PENALTY_LETTERS_COUNT + @word_position.line_index
    -(black_chars & COMMON_LETTERS.first(letters_count)).count
  end
end

#commonality_score ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 43

def commonality_score
  COMMONALITY_SCORES[@commonality] || 0
end

#confidence_score(guess_score) ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 20

def confidence_score(guess_score)
  position_score = @word_position.confidence_score
  (position_score + guess_score).clamp(position_score, 99).round
end

#frequency_score ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 47

def frequency_score
  @frequency_score ||= WordSearch.frequency_score(@word_str)
end

#green_chars ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 51

def green_chars
  @green_chars ||= find_chars(@word_position.green_letter_positions)
end

#pentalty_score ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 16

def pentalty_score
  guessed_same_letter_twice? ? 100 : 0
end

#possible? ⇒ Boolean

Returns:



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# File 'lib/wordle_decoder/word.rb', line 67

def possible?
  return true if yellow_chars.empty?

  answer_chars = @word_position.answer_chars.dup
  delete_green_chars!(answer_chars)

  yellow_chars.all? do |yellow_char|
    answer_char_index = answer_chars.index(yellow_char)
    answer_chars.delete_at(answer_char_index) if answer_char_index
  end
end

#score ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 11

def score
  @score ||= commonality_score + common_letter_score +
             frequency_score - pentalty_score
end

#to_s ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 79

def to_s
  @word_str
end

#to_terminal ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 83

def to_terminal
  @word_position.letter_positions.map do |letter_position|
    char = @word_str[letter_position.index]
    case letter_position.hint_char
    when "g"
      "{{green:#{char}}}"
    when "y"
      "{{yellow:#{char}}}"
    else
      char
    end
  end.join
end

#yellow_char_index_pairs ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 59

def yellow_char_index_pairs
  @yellow_char_index_pairs ||= find_char_index_pairs(@word_position.yellow_letter_positions)
end

#yellow_chars ⇒ Object 



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# File 'lib/wordle_decoder/word.rb', line 55

def yellow_chars
  @yellow_chars ||= find_chars(@word_position.yellow_letter_positions)
end