package backup

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

// R-1179: a drive marked AWAY is never the second-drive target. Seen in the R-1175 unit test of the data-loss hunt
// (a share copied to a drive marked disconnected). COMPANION RED-PROOF: drop the Disconnected skip → the copy lands
// on hdd_1.
func TestR1179_AnAwayDriveIsNotChosenAsTarget(t *testing.T) {
	env := newSharesEnv(t, "hdd_1", "hdd_2", "hdd_3")
	env.addShare(t, "hdd_2", "b_share", true)
	if err := env.sett.SetDisconnected(env.drives["hdd_1"], true, nil); err != nil {
		t.Fatal(err)
	}
	if err := env.m.RunSharesTier2(); err != nil {
		t.Fatal(err)
	}
	for _, call := range env.mirrored {
		if strings.Contains(call, "=>"+env.drives["hdd_1"]+string(os.PathSeparator)) {
			t.Fatalf("a copy went to the AWAY drive hdd_1: %s", call)
		}
	}
	if _, err := os.Stat(filepath.Join(sharesCopy(env, "hdd_3", "hdd_2", "b_share"), "b_share.txt")); err != nil {
		t.Fatalf("no copy on the present drive hdd_3: %v", err)
	}
}

// R-1188 (c): the data-loss hunt's C3 case (felhom.eu audits/dataloss-hunt-2026-10-20/C3-R12-leftover-temp/): a power
// cut mid-copy leaves `<file>.felhom-restoring`; the retry must bring the file back instead of failing „file exists".
// COMPANION RED-PROOF: drop the leftover removal in copyFilePreserving → the retry fails and p1.jpg stays missing.
func TestR1188c_ALeftoverTempDoesNotBlockTheRetry(t *testing.T) {
	f, _, liveLeg := wholeFixture(t)
	if err := os.MkdirAll(liveLeg, 0o755); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(liveLeg, "p1.jpg.felhom-restoring"), []byte("half"), 0o644); err != nil {
		t.Fatal(err)
	}
	if _, err := f.m.RestoreTier2Whole("app"); err != nil {
		t.Fatalf("the retry failed: %v", err)
	}
	if _, err := os.Stat(filepath.Join(liveLeg, "p1.jpg")); err != nil {
		t.Fatalf("p1.jpg is not back: %v", err)
	}
	if _, err := os.Stat(filepath.Join(liveLeg, "p1.jpg.felhom-restoring")); !os.IsNotExist(err) {
		t.Fatalf("the leftover temp is still there: %v", err)
	}
}