refactor: move convex into packages

packages/convex/users.ts

@@ -0,0 +1,32 @@
+import { mutation } from "./_generated/server"
+import { authenticatedQuery } from "./functions"
+import * as Err from "./model/error"
+
+export const getCurrentUser = authenticatedQuery({
+	handler: async (ctx) => {
+		// ctx.user is the internal Convex user document
+		return ctx.user
+	},
+})
+
+export const syncUser = mutation({
+	handler: async (ctx) => {
+		const identity = await ctx.auth.getUserIdentity()
+		if (!identity) {
+			throw Err.create(Err.Code.Unauthenticated)
+		}
+
+		const existingUser = await ctx.db
+			.query("users")
+			.withIndex("byJwtSubject", (q) =>
+				q.eq("jwtSubject", identity.subject),
+			)
+			.first()
+
+		if (!existingUser) {
+			await ctx.db.insert("users", {
+				jwtSubject: identity.subject,
+			})
+		}
+	},
+})