Decipher this text - solution

README.md

Decipher this text

Can you crack the secret message hidden within this cipher? I've taken a phrase and encoded it into a string of words that look like "meatball". It's a bit tricky, but I believe in your skills!

Cipher Text:

mEaTbALLmEAtBALLmEATbALL, mEATBalLmEAtBALLmEATbAlL mEAtbalLmEATbaLlmEAtbAlL mEATbaLLmEATbAlLmEATballmEAtbAlLmEATbaLl mEATbaLLmEAtBAlLmEAtbalLmEATbaLlmEATbAll! mEaTbALLmEAtbalLmEAtBALlmEATbAll mEAtbalL mEAtBaLlmEAtBALLmEAtbaLl? mEaTbALLmEAtbAlL'mEATbaLlmEAtbAlL mEAtBallmEAtBalLmEATbaLlmEAtBalLmEAtBALlmEAtbALL: mEAtbalLmEAtBALlmEAtbAllmEATbaLlmEAtbAlLmEATbALL@mEAtbaLlmEAtbAlLmEATbAllmEATbALLmEAtBalLmEATBallmEATbAllmEAtBAllmEAtbalLmEAtbaLlmEATbaLL.mEAtbaLLmEAtBALLmEAtBAlL

cipher.rb

# frozen_string_literal: true

def cipher(indata)
  string_builder = ""
  encoded_string_builder = ""
  encoder = "meatball"
  i = 0

  for letter in indata.chars
    if (letter.ord >= 65 && letter.ord <= 90) || (letter.ord >= 97 && letter.ord <= 122)
      string_builder += letter.unpack("B8").join("")
    else
      string_builder += letter
    end
  end

  for char in string_builder.chars
    if char == "1"
      encoded_string_builder += encoder[i].capitalize
      i += 1
    elsif char == "0"
      encoded_string_builder += encoder[i]
      i += 1
    else
      encoded_string_builder += char
    end

    if i >= encoder.chars.count
      i = 0
    end
  end
  
  encoded_string_builder
end

indata = "Wow, [REDACTED]"
puts cipher(indata)
# => "mEaTbALLmEAtBALLmEATbALL, mEATBalLmEAtBALLmEATbAlL mEAtbalLmEATbaLlmEAtbAlL mEATbaLLmEATbAlLmEATballmEAtbAlLmEATbaLl mEATbaLLmEAtBAlLmEAtbalLmEATbaLlmEATbAll! mEaTbALLmEAtbalLmEAtBALlmEATbAll mEAtbalL mEAtBaLlmEAtBALLmEAtbaLl? mEaTbALLmEAtbAlL'mEATbaLlmEAtbAlL mEAtBallmEAtBalLmEATbaLlmEAtBalLmEAtBALlmEAtbALL: mEAtbalLmEAtBALlmEAtbAllmEATbaLlmEAtbAlLmEATbALL@mEAtbaLlmEAtbAlLmEATbAllmEATbALLmEAtBalLmEATBallmEATbAllmEAtBAllmEAtbalLmEAtbaLlmEATbaLL.mEAtbaLLmEAtBALLmEAtBAlL"

decipher.rb

# frozen_string_literal: true

def decipher(indata)
  string_builder = ""
  temp_string = ""

  for letter in indata.chars
    if (letter.ord >= 65 && letter.ord <= 90)
      temp_string += "1"
    elsif (letter.ord >= 97 && letter.ord <= 122)
      temp_string += "0"
    else
      string_builder += letter
    end

    if temp_string.chars.count >= 8
      string_builder += temp_string.to_i(2).chr
      temp_string = ""
    end
  end

  string_builder
end

indata = "mEaTbALLmEAtBALLmEATbALL, mEATBalLmEAtBALLmEATbAlL mEAtbalLmEATbaLlmEAtbAlL mEATbaLLmEATbAlLmEATballmEAtbAlLmEATbaLl mEATbaLLmEAtBAlLmEAtbalLmEATbaLlmEATbAll! mEaTbALLmEAtbalLmEAtBALlmEATbAll mEAtbalL mEAtBaLlmEAtBALLmEAtbaLl? mEaTbALLmEAtbAlL'mEATbaLlmEAtbAlL mEAtBallmEAtBalLmEATbaLlmEAtBalLmEAtBALlmEAtbALL: mEAtbalLmEAtBALlmEAtbAllmEATbaLlmEAtbAlLmEATbALL@mEAtbaLlmEAtbAlLmEATbAllmEATbALLmEAtBalLmEATBallmEATbAllmEAtBAllmEAtbalLmEAtbaLlmEATbaLL.mEAtbaLLmEAtBALLmEAtBAlL"
puts decipher(indata)
# => "Wow, [REDACTED]"