feat(api): create endpoint to fetch all authors (users who have written >1 story)

server/api/authors.get.ts

@@ -0,0 +1,50 @@
+import { User } from "~/models/user";
+let authorSingleton: {
+	lastRefreshed: number;
+	data: {
+		username: string;
+		_id: number;
+		numStories: number;
+	}[];
+} = {
+	data: [],
+	lastRefreshed: Date.now(),
+};
+
+const threshold = 60 * 60 * 1000;
+export default cachedEventHandler(
+	async (ev) => {
+		if (
+			Date.now() - authorSingleton.lastRefreshed >= threshold ||
+			authorSingleton.data.length < 1
+		)
+			authorSingleton.data = await User.aggregate([
+				{ $project: { username: true, _id: true } },
+				{
+					$lookup: {
+						from: "stories",
+						localField: "_id",
+						foreignField: "author",
+						as: "stories",
+					},
+				},
+				{ $set: { numStories: { $size: "$stories" } } },
+				{ $unset: "stories" },
+				{
+					$match: {
+						numStories: { $gte: 1 },
+						_id: { $nin: ev.context.currentUser?.hiddenAuthors || [] },
+					},
+				},
+			]);
+		authorSingleton.data.sort((a, b) => {
+			if (a.username.toLocaleUpperCase() > b.username.toLocaleUpperCase())
+				return 1;
+			else if (a.username.toLocaleUpperCase() < b.username.toLocaleUpperCase())
+				return -1;
+			return 0;
+		});
+		return authorSingleton.data;
+	},
+	{ maxAge: 60 * 60 * 3 },
+);