test(message.test.ts): add tests for isDiscordLink function

feat(message.util.ts): add isDiscordLink function to check if a link is a valid discord link

src/utils/message/message.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { msgParams } from "./message.util";
+import { isDiscordLink, msgParams } from "./message.util";
 
 describe("msgParams function", () => {
   it("should correctly replace placeholders with provided words", () => {
@@ -33,4 +33,30 @@ describe("msgParams function", () => {
   it("should ignore extra words when there are no placeholders", () => {
     expect(msgParams("Hello", ["Hello", "World"])).toBe("Hello");
   });
+});
+
+describe("isDiscordLink function", () => {
+  it("should return true when the link is a discord canary link", () => {
+    expect(isDiscordLink("https://canary.discord.com/channels/732251741999071303/1113731433123565589/1113731587570413588")).toBe(true);
+  });
+
+  it("should return true when the link is a discord ptb link", () => {
+    expect(isDiscordLink("https://ptb.discord.com/channels/732251741999071303/786216771723198514/1075749993631191110")).toBe(true);
+  });
+
+  it("should return true when the link is a discord link", () => {
+    expect(isDiscordLink("https://discord.com/channels/732251741999071303/786216771723198514/803532192793493544")).toBe(true);
+  });
+
+  it("should return false because is not valid", () => {
+    expect(isDiscordLink("https://discord.com/channels/732251741999071303")).toBe(false);
+  });
+
+  it("should return false because is litteraly not a discord link", () => {
+    expect(isDiscordLink("https://www.youtube.com/watch?v=dQw4w9WgXcQ")).toBe(false);
+  });
+
+  it("should return false when the link is not a discord link", () => {
+    expect(isDiscordLink("https://fakediscord.com/channels/732251741999071303/1113731433123565589/1113731587570413588")).toBe(false);
+  });
 });

src/utils/message/message.util.ts

@@ -6,4 +6,8 @@ export const msgParams = (message: string, params: (string | number)[]): string
   }
 
   return message;
+};
+
+export const isDiscordLink = (link: string): boolean => {
+  return link.match(/^http(s?):\/\/(www\.|canary\.|ptb\.)?discord.com\/channels(\/\d*){3}$/gi) !== null;
 };