class StringUtil{
  static possesive(string){
    if(string.endsWith("s")){
      return "%(string)'"
    } else {
      return "%(string)'s"
    }
  }

  static plural(string){
    if(string.endsWith("s")){
      return "%(string)'"
    } else {
      return "%(string)s"
    }
  }

  //todo: this doesnt cover all cases perfectly, add more
  static a(string){
    var firstChar = string[0]
    if(isVowel(firstChar)){
      return "an %(string)"
    } else {
      return "a %(string)"
    }
  }

  static isVowel(char){
    return "aeiou".contains(char)
  }

  //todo: do
  static capitalize(string){
    return string
  }

  //todo: ths ignores words that arent preceeded by a space like (this) or "this". maybe fix that?
  static capitalize_all(string){
    var words = string.split(" ")
    words = words.map{|word| capitalize(word)}
    return words.join(" ")
  }
}