package stacks

import (
	"os"
	"path/filepath"
	"testing"

	"gitea.dooplex.hu/admin/felhom-controller/internal/appbackup"
)

// R-485 — the backup card sizes the recovery unit and the mirror, not two dead paths.
//
// COMPANION RED-PROOF (REPORT.md): put the old `db-dumps` + `secondary/<app>/rsync` paths back —
// this fails with has_backups=false over a unit that exists.
func TestR485_BackupCardSeesTheUnitAndTheMirror(t *testing.T) {
	m, _ := newPinManager(t, pinTplOld, pinTplNew, "deployed: true\nenv: {}\n")
	ns := t.TempDir()
	unit := appbackup.RecoveryUnitPath(ns, "nextcloud")
	if err := os.MkdirAll(filepath.Join(unit, "volume-dumps"), 0o755); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(unit, "volume-dumps", "x.tar"), make([]byte, 4096), 0o644); err != nil {
		t.Fatal(err)
	}
	mirror := filepath.Join(t.TempDir(), "backups", "secondary", "nextcloud")
	if err := os.MkdirAll(mirror, 0o755); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(mirror, "manifest.json"), []byte("{}"), 0o644); err != nil {
		t.Fatal(err)
	}
	resp, err := m.GetStackBackupData("nextcloud", ns, []string{mirror})
	if err != nil {
		t.Fatal(err)
	}
	if !resp.HasBackups {
		t.Fatal("a recovery unit on disk IS a backup — has_backups must be true")
	}
	var seen []string
	for _, p := range resp.BackupPaths {
		if p.Exists {
			seen = append(seen, p.Path)
		}
	}
	if len(seen) != 2 || seen[0] != unit || seen[1] != mirror {
		t.Errorf("want the unit and the mirror, got %v", seen)
	}
	if resp.BackupPaths[0].SizeBytes < 4096 {
		t.Errorf("the unit's size must include its volume dumps, got %d", resp.BackupPaths[0].SizeBytes)
	}
	// No unit, no mirror: nothing to delete, honestly.
	if resp, _ := m.GetStackBackupData("nextcloud", t.TempDir(), nil); resp.HasBackups {
		t.Error("nothing on disk must be has_backups=false")
	}
}