ssn.rb

# Rubular regexp pour créer des groupes de matching
# Appeller la methode match afin de constituer les groupes
# branche afin de déterminer le genre
# Mois en lettres, hash => clé mois, valeur => mois en lettres

require"date"

SSN_FORMAT = /^(?<sexe>1|2)(?<year>\d{2})(?<month>\d{2})(?<state>\d{2})(\d{6})(?<key>\d{2})$/

DPT = {
 "75" => "Paris",
 "76" => "Seine Maritime"
}

def ssn_info(ssn)
  #Return => "a man, born in March, 1986 in Paris."
  ssn = ssn.gsub(" ","")
  match_data = ssn.match(SSN_FORMAT)
  match_data[:sexe] == "1" ? var_sexe = "a man" : var_sexe = "a woman"
   
  var_month = Date::MONTHNAMES[match_data[:month].to_i]

  var_year = match_data[:year]
  var_dpt = DPT[match_data[:state]]


  var_key = match_data[:key].to_i
  number = ssn[0..12].to_i
  expected_key = 97 - (number % 97)

  if var_key == expected_key
    return "#{var_sexe}, born in #{var_month}, 19#{var_year} in #{var_dpt}."
  else
    return "Invalid card number"
  end
end

puts ssn_info("186037510803191")
puts ssn_info("286107511451175")
puts ssn_info("1 84 12 76 451 089 46")

# SSN numbers: 
# => 186037510803191
# => 286107511451175
# => 1 84 12 76 451 089 46