Merge http4k

domain/src/main/kotlin/validation/UserValidations.kt

@@ -0,0 +1,38 @@
+package be.simplenotes.domain.validation
+
+import arrow.core.Either
+import arrow.core.left
+import arrow.core.right
+import be.simplenotes.domain.model.User
+import be.simplenotes.domain.usecases.login.InvalidLoginForm
+import be.simplenotes.domain.usecases.login.LoginForm
+import be.simplenotes.domain.usecases.register.InvalidRegisterForm
+import be.simplenotes.domain.usecases.register.RegisterForm
+import io.konform.validation.Validation
+import io.konform.validation.jsonschema.maxLength
+import io.konform.validation.jsonschema.minLength
+
+internal object UserValidations {
+    private val loginValidator = Validation<LoginForm> {
+        LoginForm::username required {
+            minLength(3)
+            maxLength(50)
+        }
+        LoginForm::password required {
+            minLength(8)
+            maxLength(72) // jbcrypt limit, see https://security.stackexchange.com/a/39851
+        }
+    }
+
+    fun validateLogin(form: LoginForm): Either<InvalidLoginForm, User> {
+        val errors = loginValidator.validate(form).errors
+        return if (errors.isEmpty()) User(form.username!!, form.password!!).right()
+        else return InvalidLoginForm(errors).left()
+    }
+
+    fun validateRegister(form: RegisterForm): Either<InvalidRegisterForm, User> {
+        val errors = loginValidator.validate(form).errors
+        return if (errors.isEmpty()) User(form.username!!, form.password!!).right()
+        else return InvalidRegisterForm(errors).left()
+    }
+}