1 files changed, 83 insertions, 0 deletions
diff --git a/src/main/scala/xyz/driver/pdsuidomain/formats/json/user/ApiPartialUser.scala b/src/main/scala/xyz/driver/pdsuidomain/formats/json/user/ApiPartialUser.scala
new file mode 100644
index 0000000..977934b
--- /dev/null
+++ b/src/main/scala/xyz/driver/pdsuidomain/formats/json/user/ApiPartialUser.scala
@@ -0,0 +1,83 @@
+package xyz.driver.pdsuidomain.formats.json.user
+
+import java.math.BigInteger
+import java.security.SecureRandom
+
+import xyz.driver.pdsuicommon.domain.{Email, LongId, PasswordHash, User}
+import play.api.data.validation._
+import play.api.libs.functional.syntax._
+import play.api.libs.json._
+
+import scala.collection._
+import scala.util.Try
+import ApiPartialUser._
+import xyz.driver.pdsuicommon.json.JsonValidationException
+import xyz.driver.pdsuicommon.validation.{AdditionalConstraints, JsonValidationErrors}
+
+final case class ApiPartialUser(email: Option[String],
+                                name: Option[String],
+                                roleId: Option[String]) {
+
+  def applyTo(orig: User): Try[User] = Try {
+    val validation = Map(
+      JsPath \ "name" -> AdditionalConstraints.optionNonEmptyConstraint(name)
+    )
+
+    val validationErrors: JsonValidationErrors = validation.collect({
+      case (fieldName, e: Invalid) => (fieldName, e.errors)
+    })(breakOut)
+
+    if (validationErrors.isEmpty) {
+      orig.copy(name = name.get)
+    } else {
+      throw new JsonValidationException(validationErrors)
+    }
+  }
+
+  def toDomain(id: LongId[User] = LongId(0L)): Try[User] = Try {
+    val validation = Map(
+      JsPath \ "email" -> AdditionalConstraints.optionNonEmptyConstraint(email),
+      JsPath \ "name" -> AdditionalConstraints.optionNonEmptyConstraint(name),
+      JsPath \ "roleId" -> AdditionalConstraints.optionNonEmptyConstraint(roleId)
+    )
+
+    val validationErrors: JsonValidationErrors = validation.collect({
+      case (fieldName, e: Invalid) => (fieldName, e.errors)
+    })(breakOut)
+
+    if (validationErrors.isEmpty) {
+      val userEmail = email.map(x => Email(x.toLowerCase)).get
+      User(
+        id = id,
+        email = userEmail,
+        name = name.get,
+        role = roleId.map(UserRole.roleFromString).get,
+        passwordHash = PasswordHash(createPassword),
+        latestActivity = None,
+        deleted = None
+      )
+    } else {
+      throw new JsonValidationException(validationErrors)
+    }
+  }
+}
+
+object ApiPartialUser {
+
+  // SecureRandom is thread-safe, see the implementation
+  private val random = new SecureRandom()
+
+  def createPassword: String = new BigInteger(240, random).toString(32)
+
+  implicit val format: Format[ApiPartialUser] = (
+    (JsPath \ "email").formatNullable[String](Format(Reads.email, Writes.StringWrites)) and
+      (JsPath \ "name").formatNullable[String](Format(
+        Reads.filterNot[String](ValidationError("Username is too long (max length is 255 chars)", 255))(_.length > 255),
+        Writes.StringWrites
+      )) and
+      (JsPath \ "roleId").formatNullable[String](Format(Reads.of[String].filter(ValidationError("unknown role"))({
+        case x if UserRole.roleFromString.isDefinedAt(x) => true
+        case _ => false
+      }), Writes.of[String]))
+    ) (ApiPartialUser.apply, unlift(ApiPartialUser.unapply))
+}