package localapi

import (
	"encoding/json"
	"testing"
)

// R-1192 follow-up (night 2026-10-21): GET /guest/memory carries the host's swap and this guest's swap allowance, so
// the controller's install page can say when the host has no swap behind the guest. 0 is a real answer (no swap);
// absent means an older agent.
// RED-PROOF: without the two MemoryInfo fields the keys are missing → fails on „host_swap_mb absent".
func TestR1192_GuestMemoryCarriesHostAndGuestSwap(t *testing.T) {
	for _, c := range []struct {
		name            string
		hostB, guestMB  int64
		wantHost, wantG int64
	}{
		{"installer host (7.75 GB swap), guest swap = RAM", 7935 * mib, 8192, 7935, 8192},
		{"a host with NO swap", 0, 8192, 0, 8192},
	} {
		f := stdFixture()
		f.hostSwapB, f.guestSwapMB = c.hostB, c.guestMB
		w := do(t, memServer(t, f).Handler(), "GET", "/guest/memory", "A", "")
		var m struct {
			Data map[string]any `json:"data"`
		}
		if err := json.Unmarshal(w.Body.Bytes(), &m); err != nil {
			t.Fatal(err)
		}
		hs, ok := m.Data["host_swap_mb"].(float64)
		if !ok {
			t.Fatalf("%s: host_swap_mb absent: %s", c.name, w.Body.String())
		}
		gs, _ := m.Data["guest_swap_mb"].(float64)
		if int64(hs) != c.wantHost || int64(gs) != c.wantG {
			t.Fatalf("%s: host %v guest %v, want %d / %d", c.name, hs, gs, c.wantHost, c.wantG)
		}
	}
}