"""
Solution to 2020/04
"""
import re

passports = []

with open('input', 'r') as f:
    for passportRaw in f.read().strip().split('\n\n'):
        passport = {}
        for [key, value] in re.findall(r'([\w]{3}):(\S*)', passportRaw):
            passport[key] = value
        # print(passportRaw)
        # print(passport)
        # print()
        passports.append(passport)

print('Passports:', len(passports))

required_fields = [
    'byr',
    'iyr',
    'eyr',
    'hgt',
    'hcl',
    'ecl',
    'pid'
]


def validate_int(value, min, max):
    try:
        value = int(value)
        if value < min or value > max:
            return False
        return True
    except:
        return False


def is_valid(passport):
    for field in required_fields:
        if field not in passport:
            return False
    if not validate_int(passport['byr'], 1920, 2002):
        return False
    if not validate_int(passport['iyr'], 2010, 2020):
        return False
    if not validate_int(passport['eyr'], 2020, 2030):
        return False
    hgt_val = passport['hgt'][:-2]
    hgt_type = passport['hgt'][-2:]
    if hgt_type == 'cm':
        if not validate_int(hgt_val, 150, 193):
            return False
    elif hgt_type == 'in':
        if not validate_int(hgt_val, 59, 76):
            return False
    else:
        return False
    if not re.match('#[0-9a-f]{6}', passport['hcl']):
        return False
    if not passport['ecl'] in ['amb', 'blu', 'brn', 'gry', 'grn', 'hzl', 'oth']:
        return False
    print(passport['pid'])
    if not len(passport['pid']) == 9 or not validate_int(passport['pid'], 0, 999999999):
        return False
    return True


print('Count:')
print(len(list(x for x in passports if is_valid(x))))