From 3faf2e5f0d6de9149809017e0cf735d4c5bd06e0 Mon Sep 17 00:00:00 2001
From: Fabrice Lecomte <fabrice.lecomte.be@gmail.com>
Date: Mon, 5 Apr 2021 00:48:58 +0200
Subject: [PATCH] Add function to respond on BadRequest

---
 .../application/http/HttpStatusError.kt       | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/main/kotlin/fr/dcproject/application/http/HttpStatusError.kt b/src/main/kotlin/fr/dcproject/application/http/HttpStatusError.kt
index 215add9..319c0ee 100644
--- a/src/main/kotlin/fr/dcproject/application/http/HttpStatusError.kt
+++ b/src/main/kotlin/fr/dcproject/application/http/HttpStatusError.kt
@@ -4,11 +4,14 @@ import com.github.jasync.sql.db.postgresql.exceptions.GenericDatabaseException
 import fr.dcproject.common.security.AccessDeniedException
 import fr.dcproject.component.auth.ForbiddenException
 import fr.dcproject.component.auth.user
+import io.konform.validation.ValidationResult
+import io.ktor.application.ApplicationCall
 import io.ktor.application.call
 import io.ktor.features.NotFoundException
 import io.ktor.features.StatusPages
 import io.ktor.http.HttpStatusCode
 import io.ktor.response.respond
+import io.ktor.util.pipeline.PipelineContext
 import java.util.concurrent.CompletionException
 
 class HttpError(
@@ -27,6 +30,30 @@ class HttpError(
     )
 }
 
+fun ValidationResult<*>.toOutput(): HttpError {
+    return HttpError(
+        HttpStatusCode.BadRequest,
+        invalidParams = this.errors.map {
+            HttpError.InvalidParam(
+                it.dataPath,
+                it.message
+            )
+        }
+    )
+}
+
+suspend fun PipelineContext<*, ApplicationCall>.respondIfNotValid(validationResult: ValidationResult<*>): HttpError? {
+    if (validationResult.errors.size > 0) {
+        val out = validationResult.toOutput()
+        this.call.respond(
+            HttpStatusCode.BadRequest,
+            out
+        )
+        return out
+    }
+    return null
+}
+
 fun statusPagesInstallation(): StatusPages.Configuration.() -> Unit = {
     exception<CompletionException> { e ->
         val parent = e.cause?.cause