package webapp

import (
	"net/http"
	"time"
)

// handleStatus renders the host metrics snapshot. Phase 1 reads
// only /proc and statfs; the lsblk / smartctl / sensors
// integrations are deferred to the worker webapp expansion tracked
// in docs/distributed/worker-web-app.md §6.7 (out of band; not
// shipped in this repo). The current Snapshot struct accommodates
// the extra sections if/when those are wired in.
//
// TODO(worker-web-app §6.7): surface lsblk / smartctl / sensors /
// docker info on this page once the worker process is allowed to
// invoke those CLI tools. The cli tools are not bundled with the
// worker binary; install them separately on the host if needed.
func (s *Server) handleStatus(w http.ResponseWriter, r *http.Request) {
	writeNoStore(w)
	sess, _ := sessionFromContext(r.Context())
	snap, snapAt := s.metrics.Last()
	data := statusPageData{
		basePageData: s.newBasePage(r, "Server status", sess),
		Snapshot:     snap,
		SnapshotAt:   snapAt,
	}
	if err := s.templates.Execute(w, "status.html", data); err != nil {
		s.deps.Logger.Printf("render status: %v", err)
		http.Error(w, "template error", http.StatusInternalServerError)
	}
}

type statusPageData struct {
	basePageData
	Snapshot   Snapshot
	SnapshotAt time.Time
}