Perm Checker (#8)

* Perm Checker

Checks for specified perms and responds with specified response.

* fix: changes

* fix: final

* fix: small syntax error

Co-authored-by: Jacob Nguyen <76754747+jacoobes@users.noreply.github.com>

TypeScript/permCheck.ts

@@ -0,0 +1,45 @@
+// @ts-nocheck
+/**
+ * @author: @NeoYaBoi
+ * @version: 1.0.0
+ * @description: This is perm check, it allows users to parse the permission you want and let the plugin do the rest. (check user for that perm).
+ * @license: Null
+ * @example:
+ * ```ts
+ * import { permCheck } from "../plugins/permCheck"; //(change if need be)
+ * import { sernModule, CommandType } from "@sern/handler";
+ * export default commandModule({
+ *    plugins: [ permCheck('permission', 'Response Here') ],
+ *    execute: (ctx) => {
+ *       //your code here
+ *    }
+ * })
+ * ```
+ */
+
+import { PermissionResolvable } from "discord.js";
+import { CommandType, EventPlugin, PluginType } from "@sern/handler";
+export function permCheck(perm: PermissionResolvable, response: string): EventPlugin<CommandType.Both> {
+  return {
+    type: PluginType.Event,
+    description: "Checks for specified perm",
+    async execute(event, controller) {
+      const [ctx] = event;
+      if(ctx.guild == null) {
+        ctx.reply('This command cannot be used here')
+        console.warn('A command stopped because we couldn\'t check there permissions (was used in dms)') //delete this line if you dont was to be notified when a command is used outside of a guild/server
+        return controller.stop()
+      }
+      if(!(ctx.member! as GuildMember).permissions.has(perm)) {
+        try {
+            await ctx.reply(response)
+            return controller.stop()
+        } catch {
+            ctx.reply("You do not have the required permissions")
+            return controller.stop()
+        }
+      }
+      return controller.next()
+    },
+  };
+}