From 7ca54d8f078a2a1816c13424c7e7c2b91c806503 Mon Sep 17 00:00:00 2001
From: Iku-turso <mikko.aspiala@gmail.com>
Date: Tue, 9 May 2023 13:05:03 +0300
Subject: [PATCH] chore: Introduce utility function for "pattern matching"
 using regex

Co-authored-by: Janne Savolainen <janne.savolainen@live.fi>
Signed-off-by: Iku-turso <mikko.aspiala@gmail.com>
---
 .../src/common/k8s-api/get-match-for.test.ts  | 42 +++++++++++++++++++
 .../core/src/common/k8s-api/get-match-for.ts  | 17 ++++++++
 2 files changed, 59 insertions(+)
 create mode 100644 packages/core/src/common/k8s-api/get-match-for.test.ts
 create mode 100644 packages/core/src/common/k8s-api/get-match-for.ts

diff --git a/packages/core/src/common/k8s-api/get-match-for.test.ts b/packages/core/src/common/k8s-api/get-match-for.test.ts
new file mode 100644
index 0000000000..255c39bb78
--- /dev/null
+++ b/packages/core/src/common/k8s-api/get-match-for.test.ts
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+import { getMatchFor } from "./get-match-for";
+
+describe("get-match-for", () => {
+  it("given non-matching and matching regex, when called with a string, returns match", () => {
+    const getMatch = getMatchFor(/some-match/, /some-non-match/);
+
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const match = [...getMatch("some-match")!];
+
+    expect(match).toEqual(["some-match"]);
+  });
+
+  it("given multiple matching regex, when called with a string, returns first match", () => {
+    const getMatch = getMatchFor(/match/, /some-match/);
+
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const match = [...getMatch("match")!];
+
+    expect(match).toEqual(["match"]);
+  });
+
+  it("given multiple matching regex, when called with a string, returns first match", () => {
+    const getMatch = getMatchFor(/non-match/, /some-match/, /match/);
+
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const [...match] = getMatch("some-match")!;
+
+    expect(match).toEqual(["some-match"]);
+  });
+
+  it("given no matching regex, when called with a string, returns undefined", () => {
+    const getMatch = getMatchFor(/match/, /some-match/);
+
+    const match = getMatch("some-other-string");
+
+    expect(match).toBeUndefined();
+  });
+});
diff --git a/packages/core/src/common/k8s-api/get-match-for.ts b/packages/core/src/common/k8s-api/get-match-for.ts
new file mode 100644
index 0000000000..3c3dd1c68a
--- /dev/null
+++ b/packages/core/src/common/k8s-api/get-match-for.ts
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+export const getMatchFor =
+  (...patterns: RegExp[]) =>
+    (reference: string) => {
+      for (const pattern of patterns) {
+        const match = reference.match(pattern);
+
+        if (match) {
+          return match;
+        }
+      }
+
+      return undefined;
+    };