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PostcodeValidator.scala
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PostcodeValidator.scala
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/*
* Copyright 2023 HM Revenue & Customs
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package journey
import cats.data.Validated
import ltbs.uniform.ErrorTree
import ltbs.uniform.validation.Rule
//import collection.JavaConverters._
class PostcodeValidator extends Rule[String]{
val allowedChars = """[^a-zA-Z0-9]""".r
override def apply(v1: String): Validated[ErrorTree, String] = {
Rule.minLength[String](1, "postcode.minLength").apply(v1) andThen { validLenght =>
val cleanedPostcode = allowedChars.replaceAllIn(validLenght, "").toUpperCase
Rule.matchesRegex("""^[A-Z]{1,2}[0-9][A-Z0-9]? ?[0-9][A-Z]{2}$""",
"postcode.eror").apply(cleanedPostcode).map { validPostcode =>
validPostcode.substring(0, validPostcode.length - 3) + " " + validPostcode.substring(validPostcode.length - 3)
}
}
}
}