~repos /plum

module aoc2020_4

main() -> Result =
  input = fs::readFile!("./examples/test/demos/aoc2020/4.txt")
  valid_passwords = 0
  passwords = StrCutter(input.toStr())
  while passwords.rest.size > 0
    has_byr = False
    has_iyr = False
    has_eyr = False
    has_hgt = False
    has_hcl = False
    has_ecl = False
    has_pid = False
    passwords = passwords.cut_at("\n\n")
    lines = StrCutter(passwords.piece)
    while lines.rest.size > 0
      lines = lines.cut_at("\n")
      fields = StrCutter(lines.piece)
      while fields.rest.size > 0
        fields = fields.cut_at(" ")
        field_parts = StrCutter(fields.piece).cut_at(":")
        field_name = field_parts.piece;
        field_value = field_parts.rest;
        if field_name.equals("byr")
          has_byr = True
        else if field_name.equals("iyr")
          has_iyr = True
        else if field_name.equals("eyr")
          has_eyr = True
        else if field_name.equals("hgt")
          has_hgt = True
        else if field_name.equals("hcl")
          has_hcl = True
        else if field_name.equals("ecl")
          has_ecl = true
        else if field_name.equals("pid")
          has_pid = True
    if has_byr && has_iyr && has_eyr && has_hgt && has_hcl && has_ecl && has_pid
      valid_passwords += 1
  printLn(valid_passwords)