Implement the endpoint for using a counter

src/endpoints/useCounter.ts

@@ -0,0 +1,43 @@
+import { channelNameSchema, counterNameSchema } from "$/schemas/params";
+import { nightbotCustomHeadersSchema } from "$/schemas/nightbot";
+import { config, database } from "$/main";
+import { ServerRoute } from "@hapi/hapi";
+import boom from "@hapi/boom";
+import Joi from "joi";
+
+const route: ServerRoute = {
+	method: [ `GET`, `PATCH` ], path: `/channels/{channel}/counters/{counter}`,
+	options: {
+		validate: {
+			params: Joi.object({
+				channel: channelNameSchema,
+				counter: counterNameSchema,
+			}),
+			headers: nightbotCustomHeadersSchema.unknown(),
+			query: Joi.object({
+				delta: Joi.number().integer().required(),
+			}),
+		},
+	},
+	async handler(request) {
+		const { channel, counter } = request.params;
+		const { delta } = request.query;
+
+		if (request.headers["nightbot-user"]) {
+			let data = new URLSearchParams(request.headers["nightbot-user"]);
+
+			if (data.has(`name`) && data.has(`provider`)) {
+				let user = data.get(`name`);
+				let provider = data.get(`provider`)!;
+
+				// @ts-expect-error
+				if (config.users.disallowed[provider].includes(user)) {
+					throw boom.unauthorized();
+				};
+			};
+		};
+
+		return database.changeCount(channel, counter, delta);
+	},
+};
+export default route;