[leaderboard] add stub

apps/leaderboard/src/leaderboard.app.ts

@@ -0,0 +1,48 @@
+import { Hono } from 'hono'
+import { useWorkersLogger } from 'workers-tagged-logger'
+
+import { logger, withNotFound, withOnError } from '@repo/hono-helpers'
+
+import type { App } from './context'
+
+/**
+ * Leaderboard Worker. Nothing scores anything here yet — the one route answers the shape
+ * the client parses, with no rows in it.
+ */
+const app = new Hono<App>()
+	.use(
+		'*',
+		// middleware
+		(c, next) =>
+			useWorkersLogger(c.env.NAME, {
+				environment: c.env.ENVIRONMENT,
+				release: c.env.SENTRY_RELEASE,
+			})(c, next)
+	)
+
+	.onError(withOnError())
+	.notFound(withNotFound())
+
+	.get('/', async (c) => {
+		return c.text('hello, world!')
+	})
+
+	// The scores around a player — what the client shows when it opens a leaderboard on
+	// someone rather than at the top. Answers `{ Rows: [...] }`; an EMPTY `Rows` is a
+	// complete answer meaning "this leaderboard has no scores", which the client renders as
+	// a blank board instead of failing. The key must be present — a bare `{}` trips its
+	// parser.
+	//
+	// Nothing is ranked or stored yet, so the request body is ignored. It IS logged: the
+	// body's shape hasn't been recovered from the client, and this route is how it gets
+	// watched. Read it as text — the shape is unknown, so parsing it would only invent one —
+	// and never fail on it, since an unreadable body must not cost the client its board.
+	.post('/leaderboard/GetNearbyScores', async (c) => {
+		const body = await c.req.text().catch(() => '<unreadable>')
+		logger.info('GetNearbyScores', { body })
+
+		const rows: unknown[] = []
+		return c.json({ Rows: rows })
+	})
+
+export default app