(vision) SCS/DDD

shared/src/commonMain/kotlin/at/mocode/validation/ValidationResult.kt

@@ -0,0 +1,37 @@
+package at.mocode.validation
+
+import kotlinx.serialization.Serializable
+
+/**
+ * Represents the result of a validation operation
+ */
+@Serializable
+sealed class ValidationResult {
+    @Serializable
+    object Valid : ValidationResult()
+
+    @Serializable
+    data class Invalid(val errors: List<ValidationError>) : ValidationResult()
+
+    fun isValid(): Boolean = this is Valid
+    fun isInvalid(): Boolean = this is Invalid
+}
+
+/**
+ * Represents a single validation error
+ */
+@Serializable
+data class ValidationError(
+    val field: String,
+    val message: String,
+    val code: String? = null
+)
+
+/**
+ * Exception thrown when validation fails
+ */
+class ValidationException(
+    val validationResult: ValidationResult.Invalid
+) : IllegalArgumentException(
+    "Validation failed: ${validationResult.errors.joinToString(", ") { "${it.field}: ${it.message}" }}"
+)