From 25324d17a866bc04247767e4c9e8dc8adc29542a Mon Sep 17 00:00:00 2001
From: bloodwiing <bloodwiing+git@alchemix.dev>
Date: Mon, 20 May 2024 12:14:39 +0300
Subject: [PATCH] Add: Success / Error object utils

---
 src/lib/util.server.js | 58 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 src/lib/util.server.js

diff --git a/src/lib/util.server.js b/src/lib/util.server.js
new file mode 100644
index 0000000..d849d2b
--- /dev/null
+++ b/src/lib/util.server.js
@@ -0,0 +1,58 @@
+import { fail } from "@sveltejs/kit";
+
+/**
+ * @param {import("$types/status").Error} error 
+ * @returns {import("@sveltejs/kit").ActionFailure<import("$types/status").Error>}
+ */
+export function errorToFail(error) {
+  if (error.expected) {
+    return fail(400, error);
+  }
+  return fail(500, error);
+}
+
+/**
+ * @param {any} result 
+ * @returns {import("$types/status").Error | null}
+ */
+export function getError(result) {
+  if ('error' in result) {
+    return result;
+  }
+  return null;
+}
+
+/**
+ * @param {any} result 
+ * @returns {import("$types/status").Success | null}
+ */
+export function getSuccess(result) {
+  if ('success' in result) {
+    return result;
+  }
+  return null;
+}
+
+/**
+ * @template T
+ * @param {any} result 
+ * @param {function(import("$types/status").Error): T} callback 
+ * @returns {T | undefined}
+ */
+export function runIfError(result, callback) {
+  if ('error' in result) {
+    return callback(result);
+  }
+}
+
+/**
+ * @template T
+ * @param {any} result 
+ * @param {function(import("$types/status").Success): T} callback 
+ * @returns {T | undefined}
+ */
+export function runIfSuccess(result, callback) {
+  if ('success' in result) {
+    return callback(result);
+  }
+}