//go:build !embedspa

// spa_stub.go — the default build has no SPA embedded (so `go build`/`go test`
// don't need ui/dist). Build with `-tags embedspa` after building the SPA to
// serve the real UI (see spa_embed.go).
package main

import "net/http"

func (s *server) spaHandler() http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
		w.WriteHeader(http.StatusNotFound)
		_, _ = w.Write([]byte("fleet-manager: SPA not embedded in this build.\n" +
			"Build with: (cd ui && npm ci && npm run build) then `go build -tags embedspa`.\n"))
	})
}