Added saved library API

server/api/user/tracks/contains.get.ts

@@ -0,0 +1,22 @@
+import { getQuery, setResponseStatus } from "h3"
+import { User } from "#server/models/user"
+import { defineAuthenticatedEventHandler, requireAuthenticatedUser } from "#server/utils/auth"
+import { parseMongoId, validationResponse } from "#server/utils/api-validation"
+
+export default defineAuthenticatedEventHandler(async (event) => {
+	const authenticatedUser = await requireAuthenticatedUser(event)
+	const parsedId = parseMongoId(getQuery(event).id)
+	if ("error" in parsedId) return validationResponse(event, parsedId.error)
+
+	const user = await User.findById(authenticatedUser._id).select("savedTracks")
+	if (!user) {
+		setResponseStatus(event, 404)
+		return { message: "User not found" }
+	}
+
+	return {
+		contains: user.savedTracks.some(
+			(savedTrack: { toString(): string }) => savedTrack.toString() === parsedId.value,
+		),
+	}
+})