Flatten packages

Remove modules prefix

domain/src/validation/NoteValidations.kt

@@ -0,0 +1,35 @@
+package be.simplenotes.domain.validation
+
+import be.simplenotes.domain.usecases.markdown.ValidationError
+import be.simplenotes.types.NoteMetadata
+import io.konform.validation.Validation
+import io.konform.validation.jsonschema.maxItems
+import io.konform.validation.jsonschema.maxLength
+import io.konform.validation.jsonschema.uniqueItems
+
+internal object NoteValidations {
+    private val metaValidator = Validation<NoteMetadata> {
+        NoteMetadata::title required {
+            addConstraint("must not be blank") { it.isNotBlank() }
+            maxLength(50)
+        }
+        NoteMetadata::tags required {
+            maxItems(5)
+            uniqueItems(true)
+        }
+
+        NoteMetadata::tags onEach {
+            maxLength(15)
+            addConstraint("must not be blank") { it.isNotBlank() }
+            addConstraint("must only contain alphanumeric characters, `-` and `_`") {
+                it.matches("^[a-zA-Z0-9-_]+\$".toRegex())
+            }
+        }
+    }
+
+    fun validateMetadata(meta: NoteMetadata): ValidationError? {
+        val errors = metaValidator.validate(meta).errors
+        return if (errors.isEmpty()) null
+        else return ValidationError(errors)
+    }
+}