From a1ea9429daae076bf0991c6a7b307f94d75175f0 Mon Sep 17 00:00:00 2001
From: Redm4x <2829180+Redm4x@users.noreply.github.com>
Date: Tue, 2 Apr 2024 15:50:48 -0400
Subject: [PATCH] Add array helper

---
 api/src/utils/array/array.spec.ts | 19 +++++++++++++++++++
 api/src/utils/array/array.ts      |  7 +++++++
 api/src/utils/map/provider.ts     |  4 +++-
 3 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 api/src/utils/array/array.spec.ts
 create mode 100644 api/src/utils/array/array.ts

diff --git a/api/src/utils/array/array.spec.ts b/api/src/utils/array/array.spec.ts
new file mode 100644
index 000000000..ff1263d2c
--- /dev/null
+++ b/api/src/utils/array/array.spec.ts
@@ -0,0 +1,19 @@
+import { createFilterUnique } from "./array";
+
+describe("array helpers", () => {
+  describe("createFilterUnique", () => {
+    it("should return a functionning unique filter with default equality matcher", () => {
+      const arrayWithDuplicate = [1, 2, 2, 3, 3, 3];
+      const expected = [1, 2, 3];
+
+      expect(arrayWithDuplicate.filter(createFilterUnique())).toEqual(expected);
+    });
+
+    it("should return a functionning unique filter with custom matcher", () => {
+      const arrayWithDuplicate = [{ v: 1 }, { v: 2 }, { v: 2 }, { v: 3 }, { v: 3 }, { v: 3 }];
+      const expected = [{ v: 1 }, { v: 2 }, { v: 3 }];
+
+      expect(arrayWithDuplicate.filter(createFilterUnique((a, b) => a.v === b.v))).toEqual(expected);
+    });
+  });
+});
diff --git a/api/src/utils/array/array.ts b/api/src/utils/array/array.ts
new file mode 100644
index 000000000..3a22c4800
--- /dev/null
+++ b/api/src/utils/array/array.ts
@@ -0,0 +1,7 @@
+type Matcher<T> = (a: T, b: T) => boolean;
+
+export function createFilterUnique<T>(matcher: Matcher<T> = (a, b) => a === b): (value: T, index: number, array: T[]) => boolean {
+  return (value, index, array) => {
+    return array.findIndex((other) => matcher(value, other)) === index;
+  };
+}
diff --git a/api/src/utils/map/provider.ts b/api/src/utils/map/provider.ts
index 2eeee31b0..f8b91f24b 100644
--- a/api/src/utils/map/provider.ts
+++ b/api/src/utils/map/provider.ts
@@ -1,5 +1,6 @@
 import { Provider, ProviderSnapshotNode } from "@shared/dbSchemas/akash";
 import { Auditor, ProviderAttributesSchema, ProviderList } from "@src/types/provider";
+import { createFilterUnique } from "../array/array";
 import semver from "semver";
 
 export const mapProviderToList = (
@@ -93,8 +94,9 @@ export const mapProviderToList = (
 function getDistinctGpuModelsFromNodes(nodes: ProviderSnapshotNode[]) {
   const gpuModels = nodes.flatMap((x) => x.gpus).map((x) => ({ vendor: x.vendor, model: x.name, ram: x.memorySize, interface: x.interface }));
   const distinctGpuModels = gpuModels.filter(
-    (x, i, arr) => arr.findIndex((o) => x.vendor === o.vendor && x.model === o.model && x.ram === o.ram && x.interface === o.interface) === i
+    createFilterUnique((a, b) => a.vendor === b.vendor && a.model === b.model && a.ram === b.ram && a.interface === b.interface)
   );
+
   return distinctGpuModels;
 }