package goncfiles_test

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

	"gitea.neitzel.de/konrad/go-nc-files"
)

const testInitialFolder = "myapp"

func TestAppIconLaunchCreatesInitialFolder(t *testing.T) {
	t.Parallel()
	root := t.TempDir()
	settings := filepath.Join(t.TempDir(), "settings.json")

	visit, err := goncfiles.OpenLocal(root, settings, testInitialFolder, "")
	if err != nil {
		t.Fatal(err)
	}
	if visit.SavedDefault != testInitialFolder {
		t.Fatalf("saved: %s", visit.SavedDefault)
	}
	info, err := os.Stat(filepath.Join(root, testInitialFolder))
	if err != nil || !info.IsDir() {
		t.Fatalf("initial folder: %v", err)
	}
	if visit.WorkingDir() != filepath.Join(root, testInitialFolder) {
		t.Fatalf("working: %s", visit.WorkingDir())
	}
}

func TestSetDefaultPersistsAndDoesNotNeedVisitFolder(t *testing.T) {
	t.Parallel()
	root := t.TempDir()
	settings := filepath.Join(t.TempDir(), "settings.json")
	if err := os.Mkdir(filepath.Join(root, "Zones"), 0o755); err != nil {
		t.Fatal(err)
	}

	visit, err := goncfiles.OpenLocal(root, settings, testInitialFolder, "")
	if err != nil {
		t.Fatal(err)
	}
	if err := visit.SetDefault("Zones"); err != nil {
		t.Fatal(err)
	}

	again, err := goncfiles.OpenLocal(root, settings, testInitialFolder, "")
	if err != nil {
		t.Fatal(err)
	}
	if again.SavedDefault != "Zones" {
		t.Fatalf("saved: %s", again.SavedDefault)
	}
	if again.WorkingDir() != filepath.Join(root, "Zones") {
		t.Fatalf("working: %s", again.WorkingDir())
	}
}

func TestFilesViewLaunchDoesNotChangeSavedDefault(t *testing.T) {
	t.Parallel()
	root := t.TempDir()
	settings := filepath.Join(t.TempDir(), "settings.json")
	share := filepath.Join(root, "Shared", "TeamDNS")
	if err := os.MkdirAll(share, 0o755); err != nil {
		t.Fatal(err)
	}

	visit, err := goncfiles.OpenLocal(root, settings, testInitialFolder, "Shared/TeamDNS")
	if err != nil {
		t.Fatal(err)
	}
	if visit.SavedDefault != testInitialFolder {
		t.Fatalf("saved default must stay %s, got %s", testInitialFolder, visit.SavedDefault)
	}
	if visit.WorkingDir() != share {
		t.Fatalf("visit working: %s", visit.WorkingDir())
	}
	if _, err := os.Stat(filepath.Join(root, testInitialFolder)); err == nil {
		t.Fatal("files-view launch must not create the initial folder")
	}
}

func TestFilesViewMissingFolderFailsClosed(t *testing.T) {
	t.Parallel()
	root := t.TempDir()
	settings := filepath.Join(t.TempDir(), "settings.json")

	_, err := goncfiles.OpenLocal(root, settings, testInitialFolder, "Missing/Folder")
	if err == nil {
		t.Fatal("expected error")
	}
	if !goncfiles.IsNotExist(err) {
		t.Fatalf("want ErrNotExist, got %v", err)
	}
	if _, err := os.Stat(filepath.Join(root, "Missing")); err == nil {
		t.Fatal("must not create the visit path")
	}
	if _, err := os.Stat(filepath.Join(root, testInitialFolder)); err == nil {
		t.Fatal("must not fall back to creating initial folder")
	}
}

func TestFileStorePersistsDefaultPath(t *testing.T) {
	t.Parallel()
	path := filepath.Join(t.TempDir(), "settings.json")
	store := goncfiles.FileStore{Path: path}
	if err := store.SetDefault("Zones"); err != nil {
		t.Fatal(err)
	}
	got, err := store.GetDefault()
	if err != nil || got != "Zones" {
		t.Fatalf("got %q err=%v", got, err)
	}
	body, err := os.ReadFile(path)
	if err != nil {
		t.Fatal(err)
	}
	if !strings.Contains(string(body), `"defaultPath"`) {
		t.Fatalf("expected defaultPath key in %s", body)
	}
}

func TestMemoryStore(t *testing.T) {
	t.Parallel()
	var m goncfiles.Memory
	if err := m.SetDefault("a"); err != nil {
		t.Fatal(err)
	}
	got, err := m.GetDefault()
	if err != nil || got != "a" {
		t.Fatalf("got %q err=%v", got, err)
	}
}