morse code but with paulo cuchi

cuchi_morse.rb

# frozen_string_literal: true

dot = 'cuchi'
dash = 'paulo'

# our tree is based on this image
# https://upload.wikimedia.org/wikipedia/commons/thumb/1/19/Morse-code-tree.svg/1280px-Morse-code-tree.svg.png
$morse_tree = {
  dot => {
    char: 'e',
    dot => {
      char: 'i',
      dot => {
        char: 's',
        dot => {
          char: 'h',
          dot => { char: '5' },
          dash => { char: '4' }
        },
        dash => {
          char: 'v',
          dash => { char: '3' }
        }
      },
      dash => {
        char: 'u',
        dot => { char: 'f' },
        dash => {
          dash => { char: '2' }
        }
      }
    },
    dash => {
      char: 'a',
      dot => {
        char: 'r',
        dot => { char: 'l' },
        dash => {
          dot => '+'
        }
      },
      dash => {
        char: 'w',
        dot => { char: 'p' },
        dash => {
          char: 'j',
          dash => { char: '1' }
        }
      }
    }
  },
  dash => {
    char: 't',
    dot => {
      char: 'n',
      dot => {
        char: 'd',
        dot => {
          char: 'b',
          dot => { char: '6' },
          dash => { char: '=' }
        },
        dash => {
          char: 'x',
          dash => { char: '/' }
        }
      },
      dash => {
        char: 'k',
        dot => { char: 'c' },
        dash => { char: 'y' }
      }
    },
    dash => {
      char: 'm',
      dot => {
        char: 'g',
        dot => {
          char: 'z',
          dot => { char: '7' }
        },
        dash => { char: 'q' }
      },
      dash => {
        char: 'o',
        dot => {
          dot => '0'
        },
        dash => {
          dot => { char: '9' },
          dash => { char: '0' }
        }
      }
    }
  }
}

def decode_morse_letter(morse_letter)
  result = morse_letter.scan(/paulo|cuchi/).reduce($morse_tree) { |current, char| current[char] }

  result[:char]
end

def decode_morse_word(morse_word)
  morse_word.split.map { |morse_letter| decode_morse_letter morse_letter }.join
end

def decode_morse_sentence(morse_sentence)
  morse_sentence.split(' | ').map { |word| decode_morse_word word }.join(' ')
end

puts decode_morse_word 'paulocuchipaulocuchi cuchicuchipaulo paulocuchipaulocuchi cuchicuchicuchicuchi cuchicuchi'