public static int GetNumberOfValidPassports(
IList <Passport> passports,
PassportPolicy passportPolicy)
{
var result = passports
.Where(p => PassportHelper.GetIsValidPassport(p, passportPolicy))
.Count();
return(result);
}
public static bool GetIsValidPassport(
Passport passport,
PassportPolicy passportPolicy)
{
if (passportPolicy.IsRequiredBirthYear &&
string.IsNullOrWhiteSpace(passport.BirthYear))
{
return(false);
}
if (passportPolicy.IsRequiredCountryId &&
string.IsNullOrWhiteSpace(passport.CountryId))
{
return(false);
}
if (passportPolicy.IsRequiredExpirationYear &&
string.IsNullOrWhiteSpace(passport.ExpirationYear))
{
return(false);
}
if (passportPolicy.IsRequiredEyeColor &&
string.IsNullOrWhiteSpace(passport.EyeColor))
{
return(false);
}
if (passportPolicy.IsRequiredHairColor &&
string.IsNullOrWhiteSpace(passport.HairColor))
{
return(false);
}
if (passportPolicy.IsRequiredHeight &&
string.IsNullOrWhiteSpace(passport.Height))
{
return(false);
}
if (passportPolicy.IsRequiredIssueYear &&
string.IsNullOrWhiteSpace(passport.IssueYear))
{
return(false);
}
if (passportPolicy.IsRequiredPassportId &&
string.IsNullOrWhiteSpace(passport.PassportId))
{
return(false);
}
// If the policy doesn't validate fields, stop now
if (!passportPolicy.IsValidatingFields)
{
return(true);
}
// Validate birth year
if (!string.IsNullOrWhiteSpace(passport.BirthYear))
{
var birthYear = int.Parse(passport.BirthYear);
if (birthYear < passportPolicy.BirthYearMin ||
birthYear > passportPolicy.BirthYearMax)
{
return(false);
}
}
// Validate issue year
if (!string.IsNullOrWhiteSpace(passport.IssueYear))
{
var issueYear = int.Parse(passport.IssueYear);
if (issueYear < passportPolicy.IssueYearMin ||
issueYear > passportPolicy.IssueYearMax)
{
return(false);
}
}
// Validate expiration year
if (!string.IsNullOrWhiteSpace(passport.ExpirationYear))
{
var expirationYear = int.Parse(passport.ExpirationYear);
if (expirationYear < passportPolicy.ExpirationYearMin ||
expirationYear > passportPolicy.ExpirationYearMax)
{
return(false);
}
}
// Validate height
if (!string.IsNullOrWhiteSpace(passport.Height))
{
// hgt(Height) - a number followed by either cm or in:
// If cm, the number must be at least 150 and at most 193.
// If in, the number must be at least 59 and at most 76.
var heightMatch = Regex.Match(passport.Height, passportPolicy.HeightPattern);
if (!heightMatch.Success)
{
return(false);
}
var heightNumber = int.Parse(heightMatch.Groups[1].Value);
var unit = heightMatch.Groups[2].Value;
if ("cm".Equals(unit))
{
if (heightNumber < passportPolicy.HeightCmMin ||
heightNumber > passportPolicy.HeightCmMax)
{
return(false);
}
}
else if ("in".Equals(unit))
{
if (heightNumber < passportPolicy.HeightInMin ||
heightNumber > passportPolicy.HeightInMax)
{
return(false);
}
}
else
{
throw new Exception($"Unrecognized unit: {unit}");
}
}
// Validate hair color
if (!string.IsNullOrWhiteSpace(passport.HairColor))
{
var hairColorMatch = Regex.Match(passport.HairColor, passportPolicy.HairColorPattern);
if (!hairColorMatch.Success)
{
return(false);
}
}
// Validate eye color
if (!string.IsNullOrWhiteSpace(passport.EyeColor))
{
var eyeColorMatch = Regex.Match(passport.EyeColor, passportPolicy.EyeColorPattern);
if (!eyeColorMatch.Success)
{
return(false);
}
}
// Validate passport id
if (!string.IsNullOrWhiteSpace(passport.PassportId))
{
var passportIdMatch = Regex.Match(passport.PassportId, passportPolicy.PassportIdPattern);
if (!passportIdMatch.Success)
{
return(false);
}
}
// Validate country id
return(true);
}