Clean BadRequest response

src/main/kotlin/fr/dcproject/application/http/HttpErrorBadRequest.kt

@@ -0,0 +1,35 @@
+package fr.dcproject.application.http
+
+import fr.dcproject.application.http.HttpErrorBadRequest.InvalidParam
+import io.konform.validation.ValidationResult
+import io.ktor.http.HttpStatusCode
+
+class BadRequestException(val httpError: HttpErrorBadRequest) : Exception()
+
+class HttpErrorBadRequest(
+    statusCode: HttpStatusCode,
+    val title: String = statusCode.description,
+    val invalidParams: List<InvalidParam>,
+) {
+    val statusCode: Int = statusCode.value
+    data class InvalidParam(
+        val name: String,
+        val reason: String
+    )
+}
+
+fun ValidationResult<*>.toOutput() = HttpErrorBadRequest(
+    HttpStatusCode.BadRequest,
+    invalidParams = this.errors.map {
+        InvalidParam(
+            it.dataPath,
+            it.message
+        )
+    }
+)
+
+fun ValidationResult<*>.badRequestIfNotValid() {
+    if (errors.size > 0) {
+        throw BadRequestException(toOutput())
+    }
+}