package appexport

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

// R-1187 (c): a bundle imported over an app that is installed but NOT running is refused before anything is written —
// before the fix it „overwrote config in place" and merged the old volume data with the bundle's (proven on 9202
// 2026-10-22: a marker written after the export survived the import, reported as success).
// RED-PROOF: without the refusal the job succeeds over the stopped app — seen failing 2026-10-22.
func TestR1187c_AStoppedAppIsNotImportedOver(t *testing.T) {
	calls := swapDockerExec(t, func(c dockerCall, stdin io.Reader, stdout io.Writer) (string, error) { return "", nil })
	tree := t.TempDir()
	os.MkdirAll(filepath.Join(tree, "config"), 0755)
	os.WriteFile(filepath.Join(tree, "config", "docker-compose.yml"), []byte("services: {}\n"), 0644)
	man := &Manifest{Version: ManifestVersion, AppName: "kuma", DisplayName: "Kuma", ConfigFiles: []string{"docker-compose.yml"}}
	data, err := man.Marshal()
	if err != nil {
		t.Fatal(err)
	}
	os.WriteFile(filepath.Join(tree, "manifest.json"), data, 0644)
	fab := filepath.Join(t.TempDir(), "kuma.fab")
	if err := createTarGz(fab, tree); err != nil {
		t.Fatal(err)
	}
	stacksDir := t.TempDir()
	stackDir := filepath.Join(stacksDir, "kuma")
	os.MkdirAll(stackDir, 0755)
	os.WriteFile(filepath.Join(stackDir, "docker-compose.yml"), []byte("LIVE"), 0644)

	prov := &rtProvider{stackDir: stackDir, stacksDir: stacksDir, deployed: true, running: false}
	e := NewExporter(prov, log.New(io.Discard, "", 0), "test")
	if err := e.StartImport(ImportRequest{FABPath: fab}); err != nil {
		t.Fatalf("StartImport: %v", err)
	}
	msg := jobErr(waitJob(t, e))
	if msg == "" || !strings.Contains(msg, "nem fut") {
		t.Fatalf("an import over a stopped app must be refused with the reason, got %q", msg)
	}
	if b, _ := os.ReadFile(filepath.Join(stackDir, "docker-compose.yml")); string(b) != "LIVE" {
		t.Fatalf("the app's files were changed: %q", b)
	}
	if prov.stopped != 0 || prov.removed != 0 || prov.started || len(*calls) != 0 {
		t.Fatalf("a refused import must change nothing: stopped=%d removed=%d started=%t docker=%v", prov.stopped, prov.removed, prov.started, *calls)
	}
}