package main

import (
	"bytes"
	"errors"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"slices"
	"strings"
	"testing"

	"gioui.org/io/key"
	"gioui.org/unit"

	"git.julianfamily.org/keepassgo/clipboard"
	"git.julianfamily.org/keepassgo/passwords"
	"git.julianfamily.org/keepassgo/session"
	"git.julianfamily.org/keepassgo/vault"
	"git.julianfamily.org/keepassgo/webdav"
)

func TestUIFiltersUsingVaultModelPathsAndSearch(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{ID: "1", Title: "Bellagio", Username: "rustyryan", URL: "https://bellagio.example.invalid", Path: []string{"Crew", "Internet"}},
			{ID: "2", Title: "Vault Console", Username: "dannyocean", URL: "https://vault.crew.example.invalid", Path: []string{"Crew", "Internet"}},
			{ID: "3", Title: "Surveillance Console", Username: "codex", URL: "https://surveillance.crew.example.invalid", Path: []string{"Crew", "Home Assistant"}},
		},
	})

	u.state.NavigateToPath([]string{"Crew", "Internet"})
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Bellagio", "Vault Console"}) {
		t.Fatalf("filteredTitles() = %v, want [Bellagio Vault Console]", got)
	}

	u.search.SetText("surveillance")
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Surveillance Console"}) {
		t.Fatalf("search filteredTitles() = %v, want [Surveillance Console]", got)
	}
}

func TestUISearchBehaviorIsConsistentAcrossDesktopAndPhoneLayouts(t *testing.T) {
	t.Parallel()

	modes := []string{"desktop", "phone"}
	for _, mode := range modes {
		mode := mode
		t.Run(mode, func(t *testing.T) {
			t.Parallel()

			u := newUIWithModel(mode, vault.Model{
				Entries: []vault.Entry{
					{ID: "entry-1", Title: "Vault Console", URL: "https://vault.crew.example.invalid", Path: []string{"Root", "Internet"}},
					{ID: "entry-2", Title: "HVAC", URL: "https://climate.example.com", Path: []string{"Root", "Home"}},
				},
				Templates: []vault.Entry{
					{ID: "tpl-1", Title: "Website Login", URL: "https://accounts.example.com", Path: []string{"Templates", "Web"}},
					{ID: "tpl-2", Title: "SSH Login", URL: "ssh://infra.internal", Path: []string{"Templates", "Infra"}},
				},
				RecycleBin: []vault.Entry{
					{ID: "deleted-1", Title: "Deleted Bellagio", URL: "https://bellagio.example.com", Path: []string{"Root", "Internet"}},
					{ID: "deleted-2", Title: "Deleted HVAC", URL: "https://climate.example.com", Path: []string{"Root", "Home"}},
				},
			})

			u.showEntriesSection()
			u.state.NavigateToPath([]string{"Root", "Internet"})
			u.search.SetText("climate")
			u.filter()
			if got := u.filteredTitles(); !slices.Equal(got, []string{"HVAC"}) {
				t.Fatalf("entries filteredTitles() = %v, want [HVAC]", got)
			}

			u.showTemplatesSection()
			u.state.NavigateToPath([]string{"Templates", "Web"})
			u.search.SetText("infra")
			u.filter()
			if got := u.filteredTitles(); !slices.Equal(got, []string{"SSH Login"}) {
				t.Fatalf("templates filteredTitles() = %v, want [SSH Login]", got)
			}
			if got := u.visiblePathContexts(); !slices.Equal(got, []string{"Templates / Infra"}) {
				t.Fatalf("templates visiblePathContexts() = %v, want [Templates / Infra]", got)
			}

			u.showRecycleBinSection()
			u.search.SetText("climate")
			u.filter()
			if got := u.filteredTitles(); !slices.Equal(got, []string{"Deleted HVAC"}) {
				t.Fatalf("recycle filteredTitles() = %v, want [Deleted HVAC]", got)
			}
			if got := u.visiblePathContexts(); !slices.Equal(got, []string{"Recycle Bin / Root / Home"}) {
				t.Fatalf("recycle visiblePathContexts() = %v, want [Recycle Bin / Root / Home]", got)
			}
		})
	}
}

func TestUIClearingSearchResetsToCurrentSectionListing(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Templates: []vault.Entry{
			{ID: "tpl-1", Title: "Website Login", Path: []string{"Templates", "Web"}},
			{ID: "tpl-2", Title: "Email Login", Path: []string{"Templates", "Web"}},
			{ID: "tpl-3", Title: "SSH Login", Path: []string{"Templates", "Infra"}},
		},
	})

	u.showTemplatesSection()
	u.state.NavigateToPath([]string{"Templates", "Web"})
	u.search.SetText("ssh")
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"SSH Login"}) {
		t.Fatalf("filteredTitles() with search = %v, want [SSH Login]", got)
	}

	u.search.SetText("")
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Email Login", "Website Login"}) {
		t.Fatalf("filteredTitles() after clearing search = %v, want [Email Login Website Login]", got)
	}
}

func TestUIChildGroupsComeFromVaultModel(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{ID: "1", Title: "Bellagio", Path: []string{"Crew", "Internet"}},
			{ID: "2", Title: "Surveillance Console", Path: []string{"Crew", "Home Assistant"}},
			{ID: "3", Title: "Alma (WA Prep)", Path: []string{"Tricia", "School"}},
		},
	})

	u.state.NavigateToPath([]string{"Crew"})
	if got := u.childGroups(); !slices.Equal(got, []string{"Home Assistant", "Internet"}) {
		t.Fatalf("childGroups() = %v, want [Home Assistant Internet]", got)
	}
}

func TestUISelectedEntryFollowsApplicationStateSelection(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{ID: "1", Title: "Bellagio", Path: []string{"Crew", "Internet"}},
			{ID: "2", Title: "Vault Console", Path: []string{"Crew", "Internet"}},
		},
	})

	u.state.NavigateToPath([]string{"Crew", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "2"

	got, ok := u.selectedEntry()
	if !ok {
		t.Fatal("selectedEntry() ok = false, want true")
	}

	if got.Title != "Vault Console" {
		t.Fatalf("selectedEntry().Title = %q, want %q", got.Title, "Vault Console")
	}
}

func TestUILockHidesVisibleEntries(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{ID: "1", Title: "Bellagio", Path: []string{"Crew", "Internet"}},
		},
	})

	if err := u.state.Lock(); err != nil {
		t.Fatalf("state.Lock() error = %v", err)
	}
	u.filter()

	if got := u.filteredTitles(); len(got) != 0 {
		t.Fatalf("filteredTitles() = %v, want empty while locked", got)
	}
}

func TestUILifecycleActionsCreateSaveOpenLockAndUnlockLocalVault(t *testing.T) {
	t.Parallel()

	u := newUIWithSession("desktop", &session.Manager{})
	u.masterPassword.SetText("correct horse battery staple")

	if err := u.createVaultAction(); err != nil {
		t.Fatalf("createVaultAction() error = %v", err)
	}
	if err := u.state.UpsertEntry(vault.Entry{
		ID:       "vault-console",
		Title:    "Vault Console",
		Username: "dannyocean",
		Password: "token-1",
		URL:      "https://vault.crew.example.invalid",
		Path:     []string{"Root", "Internet"},
	}); err != nil {
		t.Fatalf("UpsertEntry() error = %v", err)
	}

	path := filepath.Join(t.TempDir(), "keepassgo.kdbx")
	u.saveAsPath.SetText(path)
	if err := u.saveAsAction(); err != nil {
		t.Fatalf("saveAsAction() error = %v", err)
	}

	if err := u.lockAction(); err != nil {
		t.Fatalf("lockAction() error = %v", err)
	}
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	if got := u.filteredTitles(); len(got) != 0 {
		t.Fatalf("filteredTitles() = %v, want empty while locked", got)
	}

	if err := u.unlockAction(); err != nil {
		t.Fatalf("unlockAction() error = %v", err)
	}
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Vault Console"}) {
		t.Fatalf("filteredTitles() after unlock = %v, want [Vault Console]", got)
	}

	reopened := newUIWithSession("desktop", &session.Manager{})
	reopened.masterPassword.SetText("correct horse battery staple")
	reopened.vaultPath.SetText(path)
	if err := reopened.openVaultAction(); err != nil {
		t.Fatalf("openVaultAction() error = %v", err)
	}
	reopened.state.NavigateToPath([]string{"Root", "Internet"})
	reopened.filter()
	if got := reopened.filteredTitles(); !slices.Equal(got, []string{"Vault Console"}) {
		t.Fatalf("reopened filteredTitles() = %v, want [Vault Console]", got)
	}
}

func TestUIMasterKeyModesCreateOpenAndUnlockLocalVault(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name        string
		mode        vault.MasterKeyMode
		password    string
		keyFileData []byte
	}{
		{
			name:     "password only",
			mode:     vault.MasterKeyModePasswordOnly,
			password: "correct horse battery staple",
		},
		{
			name:        "key file only",
			mode:        vault.MasterKeyModeKeyFileOnly,
			keyFileData: []byte("key-file-only-material"),
		},
		{
			name:        "composite",
			mode:        vault.MasterKeyModePasswordAndKeyFile,
			password:    "correct horse battery staple",
			keyFileData: []byte("composite-key-material"),
		},
	}

	for _, tt := range tests {
		tt := tt
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			keyFile := ""
			if len(tt.keyFileData) > 0 {
				keyFile = filepath.Join(t.TempDir(), "master.key")
				if err := os.WriteFile(keyFile, tt.keyFileData, 0o600); err != nil {
					t.Fatalf("WriteFile(master.key) error = %v", err)
				}
			}

			u := newUIWithSession("desktop", &session.Manager{})
			u.setMasterKeyMode(tt.mode)
			u.masterPassword.SetText(tt.password)
			u.keyFilePath.SetText(keyFile)

			if err := u.createVaultAction(); err != nil {
				t.Fatalf("createVaultAction() error = %v", err)
			}
			if err := u.state.UpsertEntry(vault.Entry{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			}); err != nil {
				t.Fatalf("UpsertEntry() error = %v", err)
			}

			path := filepath.Join(t.TempDir(), "keepassgo.kdbx")
			u.saveAsPath.SetText(path)
			if err := u.saveAsAction(); err != nil {
				t.Fatalf("saveAsAction() error = %v", err)
			}

			if err := u.lockAction(); err != nil {
				t.Fatalf("lockAction() error = %v", err)
			}
			if err := u.unlockAction(); err != nil {
				t.Fatalf("unlockAction() error = %v", err)
			}

			reopened := newUIWithSession("desktop", &session.Manager{})
			reopened.setMasterKeyMode(tt.mode)
			reopened.masterPassword.SetText(tt.password)
			reopened.keyFilePath.SetText(keyFile)
			reopened.vaultPath.SetText(path)
			if err := reopened.openVaultAction(); err != nil {
				t.Fatalf("openVaultAction() error = %v", err)
			}
			reopened.state.NavigateToPath([]string{"Root", "Internet"})
			reopened.filter()
			if got := reopened.filteredTitles(); !slices.Equal(got, []string{"Vault Console"}) {
				t.Fatalf("reopened filteredTitles() = %v, want [Vault Console]", got)
			}
		})
	}
}

func TestUIChangeMasterKeyModeForExistingVault(t *testing.T) {
	t.Parallel()

	updated := filepath.Join(t.TempDir(), "updated.key")
	if err := os.WriteFile(updated, []byte("updated-key"), 0o600); err != nil {
		t.Fatalf("WriteFile(updated.key) error = %v", err)
	}

	u := newUIWithSession("desktop", &session.Manager{})
	u.setMasterKeyMode(vault.MasterKeyModePasswordOnly)
	u.masterPassword.SetText("old-password")
	if err := u.createVaultAction(); err != nil {
		t.Fatalf("createVaultAction() error = %v", err)
	}
	if err := u.state.UpsertEntry(vault.Entry{
		ID:    "vault-console",
		Title: "Vault Console",
		Path:  []string{"Root", "Internet"},
	}); err != nil {
		t.Fatalf("UpsertEntry() error = %v", err)
	}

	path := filepath.Join(t.TempDir(), "keepassgo.kdbx")
	u.saveAsPath.SetText(path)
	if err := u.saveAsAction(); err != nil {
		t.Fatalf("saveAsAction() error = %v", err)
	}

	u.setMasterKeyMode(vault.MasterKeyModePasswordAndKeyFile)
	u.masterPassword.SetText("new-password")
	u.keyFilePath.SetText(updated)
	if err := u.changeMasterKeyAction(); err != nil {
		t.Fatalf("changeMasterKeyAction() error = %v", err)
	}
	if err := u.saveAction(); err != nil {
		t.Fatalf("saveAction() error = %v", err)
	}
	if err := u.lockAction(); err != nil {
		t.Fatalf("lockAction() error = %v", err)
	}

	u.masterPassword.SetText("old-password")
	u.keyFilePath.SetText("")
	u.setMasterKeyMode(vault.MasterKeyModePasswordOnly)
	u.runAction("unlock vault", u.unlockAction)
	if u.errorMessage == "" {
		t.Fatal("errorMessage = empty, want visible invalid master key error")
	}

	u.setMasterKeyMode(vault.MasterKeyModePasswordAndKeyFile)
	u.masterPassword.SetText("new-password")
	u.keyFilePath.SetText(updated)
	if err := u.unlockAction(); err != nil {
		t.Fatalf("unlockAction() with updated key error = %v", err)
	}

	reopened := newUIWithSession("desktop", &session.Manager{})
	reopened.setMasterKeyMode(vault.MasterKeyModePasswordAndKeyFile)
	reopened.masterPassword.SetText("new-password")
	reopened.keyFilePath.SetText(updated)
	reopened.vaultPath.SetText(path)
	if err := reopened.openVaultAction(); err != nil {
		t.Fatalf("openVaultAction() with updated key error = %v", err)
	}
	reopened.state.NavigateToPath([]string{"Root", "Internet"})
	reopened.filter()
	if got := reopened.filteredTitles(); !slices.Equal(got, []string{"Vault Console"}) {
		t.Fatalf("reopened filteredTitles() = %v, want [Vault Console]", got)
	}
}

func TestUIMasterKeyValidationErrorsAreVisible(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name      string
		mode      vault.MasterKeyMode
		password  string
		keyFile   string
		wantError string
	}{
		{
			name:      "password mode requires password",
			mode:      vault.MasterKeyModePasswordOnly,
			wantError: "master password is required",
		},
		{
			name:      "key file mode requires path",
			mode:      vault.MasterKeyModeKeyFileOnly,
			wantError: "key file is required",
		},
		{
			name:      "composite mode requires password",
			mode:      vault.MasterKeyModePasswordAndKeyFile,
			keyFile:   filepath.Join("/tmp", "ignored.key"),
			wantError: "master password is required",
		},
	}

	for _, tt := range tests {
		tt := tt
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			u := newUIWithSession("desktop", &session.Manager{})
			u.setMasterKeyMode(tt.mode)
			u.masterPassword.SetText(tt.password)
			u.keyFilePath.SetText(tt.keyFile)

			u.runAction("create vault", u.createVaultAction)

			if got := u.errorMessage; got != tt.wantError {
				t.Fatalf("errorMessage = %q, want %q", got, tt.wantError)
			}
			if got := u.statusMessage; got != "" {
				t.Fatalf("statusMessage = %q, want empty on validation error", got)
			}
		})
	}
}

func TestUIUnreadableAndInvalidMasterKeyErrorsAreVisible(t *testing.T) {
	t.Parallel()

	keyFile := filepath.Join(t.TempDir(), "master.key")
	if err := os.WriteFile(keyFile, []byte("key-material"), 0o600); err != nil {
		t.Fatalf("WriteFile(master.key) error = %v", err)
	}

	create := newUIWithSession("desktop", &session.Manager{})
	create.setMasterKeyMode(vault.MasterKeyModeKeyFileOnly)
	create.keyFilePath.SetText(keyFile)
	if err := create.createVaultAction(); err != nil {
		t.Fatalf("createVaultAction() error = %v", err)
	}

	path := filepath.Join(t.TempDir(), "keepassgo.kdbx")
	create.saveAsPath.SetText(path)
	if err := create.saveAsAction(); err != nil {
		t.Fatalf("saveAsAction() error = %v", err)
	}

	unreadable := newUIWithSession("desktop", &session.Manager{})
	unreadable.setMasterKeyMode(vault.MasterKeyModeKeyFileOnly)
	unreadable.keyFilePath.SetText(filepath.Join(t.TempDir(), "missing.key"))
	unreadable.runAction("open vault", unreadable.openVaultAction)
	if got := unreadable.errorMessage; got == "" || got[:14] != "read key file:" {
		t.Fatalf("errorMessage = %q, want read key file error", got)
	}

	wrong := newUIWithSession("desktop", &session.Manager{})
	wrong.setMasterKeyMode(vault.MasterKeyModeKeyFileOnly)
	wrong.keyFilePath.SetText(filepath.Join(t.TempDir(), "wrong.key"))
	if err := os.WriteFile(wrong.keyFilePath.Text(), []byte("wrong-key"), 0o600); err != nil {
		t.Fatalf("WriteFile(wrong.key) error = %v", err)
	}
	wrong.vaultPath.SetText(path)
	wrong.runAction("open vault", wrong.openVaultAction)
	if got := wrong.errorMessage; got == "" || !bytes.Contains([]byte(got), []byte(vault.ErrInvalidMasterKey.Error())) {
		t.Fatalf("errorMessage = %q, want invalid master key error", got)
	}
}

func TestUIOpenRemoteAndSaveThroughConfiguredWebDAVTarget(t *testing.T) {
	t.Parallel()

	key := vault.MasterKey{Password: "correct horse battery staple"}
	model := vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	}

	var putCount int
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.Method {
		case http.MethodGet:
			var encoded bytes.Buffer
			if err := vault.SaveKDBXWithKey(&encoded, model, key); err != nil {
				t.Fatalf("SaveKDBXWithKey() error = %v", err)
			}
			w.Header().Set("ETag", "\"v1\"")
			_, _ = w.Write(encoded.Bytes())
		case http.MethodPut:
			putCount++
			w.Header().Set("ETag", "\"v2\"")
			w.WriteHeader(http.StatusNoContent)
		default:
			t.Fatalf("unexpected method %s", r.Method)
		}
	}))
	defer server.Close()

	u := newUIWithSession("desktop", &session.Manager{})
	u.masterPassword.SetText("correct horse battery staple")
	u.remoteBaseURL.SetText(server.URL)
	u.remotePath.SetText("vaults/main.kdbx")

	if err := u.openRemoteAction(); err != nil {
		t.Fatalf("openRemoteAction() error = %v", err)
	}

	if err := u.state.UpsertEntry(vault.Entry{
		ID:       "vault-console",
		Title:    "Vault Console",
		Username: "dannyocean",
		Password: "token-2",
		URL:      "https://vault.crew.example.invalid",
		Path:     []string{"Root", "Internet"},
	}); err != nil {
		t.Fatalf("UpsertEntry() error = %v", err)
	}

	if err := u.saveAction(); err != nil {
		t.Fatalf("saveAction() error = %v", err)
	}

	if putCount != 1 {
		t.Fatalf("remote PUT count = %d, want 1", putCount)
	}
}

func TestUIOpenRemoteReportsTransportFailure(t *testing.T) {
	t.Parallel()

	server := httptest.NewServer(http.HandlerFunc(func(http.ResponseWriter, *http.Request) {}))
	url := server.URL
	server.Close()

	u := newUIWithSession("desktop", &session.Manager{})
	u.masterPassword.SetText("correct horse battery staple")
	u.remoteBaseURL.SetText(url)
	u.remotePath.SetText("vaults/main.kdbx")

	u.runAction("open remote vault", u.openRemoteAction)

	if got := u.errorMessage; !strings.Contains(got, "open remote vault failed:") {
		t.Fatalf("errorMessage = %q, want open remote vault failure", got)
	}
	if got := u.statusMessage; got != "" {
		t.Fatalf("statusMessage = %q, want empty on remote open failure", got)
	}
}

func TestUIRemoteSaveConflictShowsVisibleErrorAndKeepsDirtyState(t *testing.T) {
	t.Parallel()

	key := vault.MasterKey{Password: "correct horse battery staple"}
	model := vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	}

	var putCount int
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.Method {
		case http.MethodGet:
			var encoded bytes.Buffer
			if err := vault.SaveKDBXWithKey(&encoded, model, key); err != nil {
				t.Fatalf("SaveKDBXWithKey() error = %v", err)
			}
			w.Header().Set("ETag", "\"v1\"")
			_, _ = w.Write(encoded.Bytes())
		case http.MethodPut:
			putCount++
			w.WriteHeader(http.StatusPreconditionFailed)
		default:
			t.Fatalf("unexpected method %s", r.Method)
		}
	}))
	defer server.Close()

	u := newUIWithSession("desktop", &session.Manager{})
	u.masterPassword.SetText("correct horse battery staple")
	u.remoteBaseURL.SetText(server.URL)
	u.remotePath.SetText("vaults/main.kdbx")

	if err := u.openRemoteAction(); err != nil {
		t.Fatalf("openRemoteAction() error = %v", err)
	}
	if err := u.state.UpsertEntry(vault.Entry{
		ID:       "vault-console",
		Title:    "Vault Console",
		Username: "dannyocean",
		Password: "token-2",
		URL:      "https://vault.crew.example.invalid",
		Path:     []string{"Root", "Internet"},
	}); err != nil {
		t.Fatalf("UpsertEntry() error = %v", err)
	}

	u.runAction("save vault", u.saveAction)

	if got := u.errorMessage; got != "Save conflict: the remote vault changed. Reopen it and retry the save." {
		t.Fatalf("errorMessage = %q, want normalized save conflict guidance", got)
	}
	if got := u.statusMessage; got != "" {
		t.Fatalf("statusMessage = %q, want empty after remote save conflict", got)
	}
	if !u.state.Dirty {
		t.Fatal("Dirty = false, want true after remote save conflict")
	}
	if putCount != 1 {
		t.Fatalf("remote PUT count = %d, want 1", putCount)
	}
}

func TestUIMasterKeyInputSupportsKeyFileAndCompositeKeys(t *testing.T) {
	t.Parallel()

	keyFile := filepath.Join(t.TempDir(), "master.key")
	keyData := []byte("key-file-bytes")
	if err := os.WriteFile(keyFile, keyData, 0o600); err != nil {
		t.Fatalf("WriteFile(keyFile) error = %v", err)
	}

	u := newUIWithSession("desktop", &session.Manager{})
	u.setMasterKeyMode(vault.MasterKeyModePasswordAndKeyFile)
	u.masterPassword.SetText("correct horse battery staple")
	u.keyFilePath.SetText(keyFile)

	key, err := u.currentMasterKey()
	if err != nil {
		t.Fatalf("currentMasterKey() error = %v", err)
	}

	if key.Password != "correct horse battery staple" {
		t.Fatalf("MasterKey.Password = %q, want correct horse battery staple", key.Password)
	}
	if !bytes.Equal(key.KeyFileData, keyData) {
		t.Fatalf("MasterKey.KeyFileData = %q, want %q", key.KeyFileData, keyData)
	}
}

func TestUISectionNavigationShowsTemplatesAndRecycleBin(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{ID: "entry-1", Title: "Vault Console", Path: []string{"Root", "Internet"}},
		},
		Templates: []vault.Entry{
			{ID: "tpl-1", Title: "Website Login", Path: []string{"Templates", "Web"}},
		},
		RecycleBin: []vault.Entry{
			{ID: "deleted-1", Title: "Deleted Entry", Path: []string{"Root", "Internet"}},
		},
	})

	u.showTemplatesSection()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Website Login"}) {
		t.Fatalf("template filteredTitles() = %v, want [Website Login]", got)
	}

	u.showRecycleBinSection()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Deleted Entry"}) {
		t.Fatalf("recycle filteredTitles() = %v, want [Deleted Entry]", got)
	}

	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Vault Console"}) {
		t.Fatalf("entry filteredTitles() = %v, want [Vault Console]", got)
	}
}

func TestUIGroupManagementAndPathNavigationAreControllerDriven(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{ID: "entry-1", Title: "Vault Console", Path: []string{"Root", "Internet"}},
			{ID: "entry-2", Title: "Home Assistant", Path: []string{"Root", "Home Assistant"}},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root"})
	u.filter()

	u.groupName.SetText("Finance")
	if err := u.createGroupAction(); err != nil {
		t.Fatalf("createGroupAction() error = %v", err)
	}
	if got := u.childGroups(); !slices.Equal(got, []string{"Finance", "Home Assistant", "Internet"}) {
		t.Fatalf("childGroups() after create = %v, want [Finance Home Assistant Internet]", got)
	}

	u.state.EnterGroup("Finance")
	u.filter()
	u.groupName.SetText("Budget")
	if err := u.renameGroupAction(); err != nil {
		t.Fatalf("renameGroupAction() error = %v", err)
	}
	if !slices.Equal(u.state.CurrentPath, []string{"Root", "Budget"}) {
		t.Fatalf("state.CurrentPath after rename = %v, want [Root Budget]", u.state.CurrentPath)
	}

	u.state.NavigateToPath([]string{"Root"})
	u.filter()
	if got := u.childGroups(); !slices.Equal(got, []string{"Budget", "Home Assistant", "Internet"}) {
		t.Fatalf("childGroups() after rename = %v, want [Budget Home Assistant Internet]", got)
	}

	u.state.NavigateToPath([]string{"Root", "Budget"})
	u.filter()
	if err := u.deleteCurrentGroupAction(); err != nil {
		t.Fatalf("deleteCurrentGroupAction() error = %v", err)
	}
	if !slices.Equal(u.state.CurrentPath, []string{"Root"}) {
		t.Fatalf("state.CurrentPath after delete = %v, want [Root]", u.state.CurrentPath)
	}
	if got := u.childGroups(); !slices.Equal(got, []string{"Home Assistant", "Internet"}) {
		t.Fatalf("childGroups() after delete = %v, want [Home Assistant Internet]", got)
	}
}

func TestUISavingEntryWithDifferentPathMovesItBetweenGroups(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
			{
				ID:       "ha",
				Title:    "Home Assistant",
				Username: "rustyryan",
				Password: "token-2",
				URL:      "https://ha.example.test",
				Path:     []string{"Root", "Home Assistant"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()
	u.entryPath.SetText("Root / Home Assistant")

	if err := u.saveEntryAction(); err != nil {
		t.Fatalf("saveEntryAction() error = %v", err)
	}

	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	if got := u.filteredTitles(); len(got) != 0 {
		t.Fatalf("filteredTitles() in source group = %v, want empty after move", got)
	}

	u.state.NavigateToPath([]string{"Root", "Home Assistant"})
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Home Assistant", "Vault Console"}) {
		t.Fatalf("filteredTitles() in destination group = %v, want [Vault Console Home Assistant]", got)
	}
}

func TestUISavesDuplicatesDeletesAndRestoresEntriesFromTheEditor(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()
	u.entryPassword.SetText("token-2")

	if err := u.saveEntryAction(); err != nil {
		t.Fatalf("saveEntryAction() error = %v", err)
	}
	u.filter()
	if entry, ok := u.selectedEntry(); !ok || entry.Password != "token-2" {
		t.Fatalf("selectedEntry() = %#v, want updated password token-2", entry)
	}

	if err := u.duplicateSelectedEntryAction(); err != nil {
		t.Fatalf("duplicateSelectedEntryAction() error = %v", err)
	}
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Vault Console", "Vault Console (Copy)"}) {
		t.Fatalf("filteredTitles() after duplicate = %v, want copy present", got)
	}

	if err := u.deleteSelectedEntryAction(); err != nil {
		t.Fatalf("deleteSelectedEntryAction() error = %v", err)
	}
	u.showRecycleBinSection()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Vault Console (Copy)"}) {
		t.Fatalf("recycle filteredTitles() = %v, want deleted copy", got)
	}

	u.state.SelectedEntryID = "vault-console-copy"
	if err := u.restoreSelectedRecycleEntryAction(); err != nil {
		t.Fatalf("restoreSelectedRecycleEntryAction() error = %v", err)
	}
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Vault Console", "Vault Console (Copy)"}) {
		t.Fatalf("filteredTitles() after restore = %v, want restored copy", got)
	}
}

func TestUICreatesEntryWithAllSupportedEditorFields(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()

	u.entryID.SetText("bellagio")
	u.entryTitle.SetText("Bellagio")
	u.entryUsername.SetText("rustyryan")
	u.entryPassword.SetText("token-1")
	u.entryURL.SetText("https://bellagio.example.invalid")
	u.entryNotes.SetText("Registrar account")
	u.entryTags.SetText("dns, registrar")
	u.entryPath.SetText("Root / Internet")
	u.entryFields.SetText("Environment=prod\nAccount ID=12345")

	if err := u.saveEntryAction(); err != nil {
		t.Fatalf("saveEntryAction() create error = %v", err)
	}

	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Bellagio"}) {
		t.Fatalf("filteredTitles() = %v, want [Bellagio]", got)
	}

	item, ok := u.selectedEntry()
	if !ok {
		t.Fatal("selectedEntry() ok = false, want created entry")
	}
	if item.Title != "Bellagio" || item.Username != "rustyryan" || item.Password != "token-1" || item.URL != "https://bellagio.example.invalid" {
		t.Fatalf("selectedEntry() = %#v, want created Bellagio credentials", item)
	}
	if item.Notes != "Registrar account" {
		t.Fatalf("selectedEntry().Notes = %q, want %q", item.Notes, "Registrar account")
	}
	if !slices.Equal(item.Tags, []string{"dns", "registrar"}) {
		t.Fatalf("selectedEntry().Tags = %v, want [dns registrar]", item.Tags)
	}
	if item.Fields["Environment"] != "prod" || item.Fields["Account ID"] != "12345" {
		t.Fatalf("selectedEntry().Fields = %#v, want parsed custom fields", item.Fields)
	}
}

func TestUIEditingEntryPathMovesEntryBetweenGroups(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()
	u.entryPath.SetText("Root / Infrastructure")

	if err := u.saveEntryAction(); err != nil {
		t.Fatalf("saveEntryAction() move error = %v", err)
	}

	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	if got := u.filteredTitles(); len(got) != 0 {
		t.Fatalf("filteredTitles() in old path = %v, want empty after move", got)
	}

	u.state.NavigateToPath([]string{"Root", "Infrastructure"})
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Vault Console"}) {
		t.Fatalf("filteredTitles() in new path = %v, want [Vault Console]", got)
	}
	u.state.SelectedEntryID = "vault-console"

	model, err := u.state.Session.Current()
	if err != nil {
		t.Fatalf("state.Session.Current() error = %v", err)
	}

	var (
		item vault.Entry
		ok   bool
	)
	for _, candidate := range model.Entries {
		if candidate.ID == "vault-console" {
			item = candidate
			ok = true
			break
		}
	}
	if !ok {
		t.Fatal("model.Entries contains vault-console = false, want moved entry")
	}
	if !slices.Equal(item.Path, []string{"Root", "Infrastructure"}) {
		t.Fatalf("model.Entries vault-console Path = %v, want [Root Infrastructure]", item.Path)
	}
}

func TestUITemplateAndAttachmentActionsWorkThroughEditor(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Templates: []vault.Entry{
			{
				ID:       "tpl-1",
				Title:    "Website Login",
				Username: "template-user",
				Password: "template-password",
				Notes:    "Reusable template",
				Path:     []string{"Templates", "Web"},
			},
		},
	})

	u.showTemplatesSection()
	u.filter()
	u.state.SelectedEntryID = "tpl-1"
	u.loadSelectedEntryIntoEditor()
	u.entryTitle.SetText("Website Login Updated")

	if err := u.saveTemplateAction(); err != nil {
		t.Fatalf("saveTemplateAction() error = %v", err)
	}

	u.entryID.SetText("entry-1")
	u.entryTitle.SetText("Bellagio")
	u.entryUsername.SetText("rustyryan")
	u.entryPassword.SetText("token-1")
	u.entryURL.SetText("https://bellagio.example.invalid")
	u.entryPath.SetText("Root / Internet")
	if err := u.instantiateSelectedTemplateAction(); err != nil {
		t.Fatalf("instantiateSelectedTemplateAction() error = %v", err)
	}

	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "entry-1"
	u.loadSelectedEntryIntoEditor()

	attachmentPath := filepath.Join(t.TempDir(), "token.txt")
	attachmentExportPath := filepath.Join(t.TempDir(), "exported.txt")
	content := []byte("attachment-content")
	if err := os.WriteFile(attachmentPath, content, 0o600); err != nil {
		t.Fatalf("WriteFile(attachmentPath) error = %v", err)
	}

	u.attachmentPath.SetText(attachmentPath)
	u.attachmentName.SetText("token.txt")
	if err := u.addAttachmentAction(); err != nil {
		t.Fatalf("addAttachmentAction() error = %v", err)
	}
	if got := u.selectedAttachmentNames(); !slices.Equal(got, []string{"token.txt"}) {
		t.Fatalf("selectedAttachmentNames() = %v, want [token.txt]", got)
	}

	replacementPath := filepath.Join(t.TempDir(), "token-replacement.txt")
	replacement := []byte("attachment-replacement")
	if err := os.WriteFile(replacementPath, replacement, 0o600); err != nil {
		t.Fatalf("WriteFile(replacementPath) error = %v", err)
	}
	u.attachmentPath.SetText(replacementPath)
	if err := u.replaceAttachmentAction(); err != nil {
		t.Fatalf("replaceAttachmentAction() error = %v", err)
	}

	u.exportAttachmentPath.SetText(attachmentExportPath)
	if err := u.exportAttachmentAction(); err != nil {
		t.Fatalf("exportAttachmentAction() error = %v", err)
	}

	exported, err := os.ReadFile(attachmentExportPath)
	if err != nil {
		t.Fatalf("ReadFile(exportAttachmentPath) error = %v", err)
	}
	if !bytes.Equal(exported, replacement) {
		t.Fatalf("exported attachment = %q, want %q", exported, replacement)
	}

	if err := u.removeAttachmentAction(); err != nil {
		t.Fatalf("removeAttachmentAction() error = %v", err)
	}

	u.showTemplatesSection()
	u.filter()
	u.state.SelectedEntryID = "tpl-1"
	if err := u.deleteSelectedTemplateAction(); err != nil {
		t.Fatalf("deleteSelectedTemplateAction() error = %v", err)
	}
	u.filter()
	if got := u.filteredTitles(); len(got) != 0 {
		t.Fatalf("template filteredTitles() after delete = %v, want empty", got)
	}
}

func TestUITemplatesCanBeBrowsedCreatedEditedDeletedAndInstantiated(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Templates: []vault.Entry{
			{
				ID:       "tpl-existing",
				Title:    "SSH Login",
				Username: "root",
				Password: "template-password",
				Path:     []string{"Templates", "Infra"},
			},
		},
	})

	u.showTemplatesSection()
	if got := u.childGroups(); !slices.Equal(got, []string{"Infra"}) {
		t.Fatalf("childGroups() = %v, want [Infra] at template root", got)
	}

	u.state.NavigateToPath([]string{"Templates", "Infra"})
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"SSH Login"}) {
		t.Fatalf("filteredTitles() = %v, want [SSH Login] in template path", got)
	}

	u.state.SelectedEntryID = ""
	u.loadSelectedEntryIntoEditor()
	u.entryID.SetText("tpl-web")
	u.entryTitle.SetText("Website Login")
	u.entryUsername.SetText("template-user")
	u.entryPassword.SetText("template-password")
	u.entryNotes.SetText("Reusable template for website accounts.")
	u.entryTags.SetText("template, web")
	u.entryPath.SetText("Templates / Web")
	if err := u.saveTemplateAction(); err != nil {
		t.Fatalf("saveTemplateAction(create) error = %v", err)
	}

	u.state.NavigateToPath([]string{"Templates", "Web"})
	u.filter()
	if got := u.filteredTitles(); !slices.Equal(got, []string{"Website Login"}) {
		t.Fatalf("filteredTitles() after create = %v, want [Website Login]", got)
	}

	u.state.SelectedEntryID = "tpl-web"
	u.loadSelectedEntryIntoEditor()
	u.entryTitle.SetText("Website Login Updated")
	u.entryFields.SetText("Environment=prod")
	if err := u.saveTemplateAction(); err != nil {
		t.Fatalf("saveTemplateAction(edit) error = %v", err)
	}

	u.filter()
	selected, ok := u.selectedEntry()
	if !ok {
		t.Fatal("selectedEntry() ok = false, want updated template")
	}
	if selected.Title != "Website Login Updated" {
		t.Fatalf("selectedEntry().Title = %q, want %q", selected.Title, "Website Login Updated")
	}
	if selected.Fields["Environment"] != "prod" {
		t.Fatalf("selectedEntry().Fields[Environment] = %q, want %q", selected.Fields["Environment"], "prod")
	}

	u.entryID.SetText("entry-1")
	u.entryTitle.SetText("Bellagio")
	u.entryUsername.SetText("rustyryan")
	u.entryPassword.SetText("token-1")
	u.entryURL.SetText("https://bellagio.example.invalid")
	u.entryPath.SetText("Root / Internet")
	if err := u.instantiateSelectedTemplateAction(); err != nil {
		t.Fatalf("instantiateSelectedTemplateAction() error = %v", err)
	}

	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "entry-1"
	instantiated, ok := u.selectedEntry()
	if !ok {
		t.Fatal("selectedEntry() ok = false, want instantiated entry")
	}
	if instantiated.Title != "Bellagio" {
		t.Fatalf("selectedEntry().Title = %q, want %q", instantiated.Title, "Bellagio")
	}
	if instantiated.Notes != "Reusable template for website accounts." {
		t.Fatalf("selectedEntry().Notes = %q, want template notes", instantiated.Notes)
	}
	if instantiated.Fields["Environment"] != "prod" {
		t.Fatalf("selectedEntry().Fields[Environment] = %q, want %q", instantiated.Fields["Environment"], "prod")
	}

	u.showTemplatesSection()
	u.state.NavigateToPath([]string{"Templates", "Web"})
	u.filter()
	u.state.SelectedEntryID = "tpl-web"
	if err := u.deleteSelectedTemplateAction(); err != nil {
		t.Fatalf("deleteSelectedTemplateAction() error = %v", err)
	}

	u.filter()
	if got := u.filteredTitles(); len(got) != 0 {
		t.Fatalf("filteredTitles() after delete = %v, want empty", got)
	}
}

func TestUIAttachmentActionsRejectDuplicateMissingAndOversizeCases(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:          "vault-console",
				Title:       "Vault Console",
				Attachments: map[string][]byte{"token.txt": []byte("original")},
				Path:        []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()

	addPath := filepath.Join(t.TempDir(), "token.txt")
	if err := os.WriteFile(addPath, []byte("duplicate"), 0o600); err != nil {
		t.Fatalf("WriteFile(addPath) error = %v", err)
	}
	u.attachmentName.SetText("token.txt")
	u.attachmentPath.SetText(addPath)
	if err := u.addAttachmentAction(); err == nil || !strings.Contains(err.Error(), "already exists") {
		t.Fatalf("addAttachmentAction() error = %v, want duplicate-name failure", err)
	}

	u.attachmentName.SetText("missing.txt")
	if err := u.replaceAttachmentAction(); err == nil || !strings.Contains(err.Error(), "not found") {
		t.Fatalf("replaceAttachmentAction() error = %v, want missing-attachment failure", err)
	}

	oversizePath := filepath.Join(t.TempDir(), "oversize.bin")
	oversizeContent := bytes.Repeat([]byte("a"), maxAttachmentBytes+1)
	if err := os.WriteFile(oversizePath, oversizeContent, 0o600); err != nil {
		t.Fatalf("WriteFile(oversizePath) error = %v", err)
	}
	u.attachmentName.SetText("oversize.bin")
	u.attachmentPath.SetText(oversizePath)
	if err := u.addAttachmentAction(); err == nil || !strings.Contains(err.Error(), "too large") {
		t.Fatalf("addAttachmentAction() oversize error = %v, want size failure", err)
	}
}

func TestUIRestoresSelectedEntryHistoryVersion(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-2",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
				History: []vault.Entry{
					{
						ID:       "vault-console-h1",
						Title:    "Vault Console",
						Username: "dannyocean",
						Password: "token-1",
						URL:      "https://vault.crew.example.invalid",
						Path:     []string{"Root", "Internet"},
					},
				},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()
	u.historyIndex.SetText("0")

	if err := u.restoreSelectedHistoryAction(); err != nil {
		t.Fatalf("restoreSelectedHistoryAction() error = %v", err)
	}
	u.filter()
	if entry, ok := u.selectedEntry(); !ok || entry.Password != "token-1" {
		t.Fatalf("selectedEntry() = %#v, want restored password token-1", entry)
	}
}

func TestUISelectingEntryHistoryVersionTracksSelectedVersion(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-2",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
				History: []vault.Entry{
					{
						ID:       "vault-console-h1",
						Title:    "Vault Console",
						Username: "dannyocean",
						Password: "token-1",
						URL:      "https://vault.crew.example.invalid",
						Path:     []string{"Root", "Internet"},
						Notes:    "previous token",
					},
					{
						ID:       "vault-console-h0",
						Title:    "Vault Console",
						Username: "dannyocean",
						Password: "token-0",
						URL:      "https://vault.crew.example.invalid",
						Path:     []string{"Root", "Internet"},
						Notes:    "oldest token",
					},
				},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()

	history := u.visibleHistory()
	if len(history) != 2 {
		t.Fatalf("len(visibleHistory()) = %d, want 2", len(history))
	}
	if history[1].Notes != "oldest token" {
		t.Fatalf("visibleHistory()[1].Notes = %q, want %q", history[1].Notes, "oldest token")
	}

	if err := u.selectHistoryVersion(1); err != nil {
		t.Fatalf("selectHistoryVersion(1) error = %v", err)
	}

	selected, ok := u.selectedHistoryEntry()
	if !ok {
		t.Fatal("selectedHistoryEntry() ok = false, want true")
	}
	if selected.Password != "token-0" {
		t.Fatalf("selectedHistoryEntry().Password = %q, want %q", selected.Password, "token-0")
	}
}
func TestUIKeyboardShortcutActionsDispatchExpectedCommands(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()

	if err := u.performShortcut(shortcutNewEntry); err != nil {
		t.Fatalf("performShortcut(new-entry) error = %v", err)
	}
	if u.state.SelectedEntryID != "" {
		t.Fatalf("SelectedEntryID = %q, want empty after new-entry shortcut", u.state.SelectedEntryID)
	}

	u.state.SelectedEntryID = "vault-console"
	if err := u.performShortcut(shortcutCopyUser); err != nil {
		t.Fatalf("performShortcut(copy-user) error = %v", err)
	}
	if err := u.performShortcut(shortcutCopyPassword); err != nil {
		t.Fatalf("performShortcut(copy-password) error = %v", err)
	}
	if err := u.performShortcut(shortcutCopyURL); err != nil {
		t.Fatalf("performShortcut(copy-url) error = %v", err)
	}
}

func TestUIKeyboardNavigationMovesAcrossBreadcrumbsListAndDetail(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "bellagio",
				Title:    "Bellagio",
				Username: "rustyryan",
				Path:     []string{"Root", "Internet"},
			},
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Path:     []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()

	if got := u.keyboardFocus; got != focusSearch {
		t.Fatalf("keyboardFocus = %q, want %q", got, focusSearch)
	}

	u.handleKeyPress(key.NameTab, 0)
	if got := u.keyboardFocus; got != breadcrumbFocusID(0) {
		t.Fatalf("keyboardFocus after Tab = %q, want %q", got, breadcrumbFocusID(0))
	}

	u.handleKeyPress(key.NameTab, 0)
	if got := u.keyboardFocus; got != listFocusID(0) {
		t.Fatalf("keyboardFocus after second Tab = %q, want %q", got, listFocusID(0))
	}
	if got := u.state.SelectedEntryID; got != "bellagio" {
		t.Fatalf("SelectedEntryID after list focus = %q, want %q", got, "bellagio")
	}

	u.handleKeyPress(key.NameDownArrow, 0)
	if got := u.keyboardFocus; got != listFocusID(1) {
		t.Fatalf("keyboardFocus after Down = %q, want %q", got, listFocusID(1))
	}
	if got := u.state.SelectedEntryID; got != "vault-console" {
		t.Fatalf("SelectedEntryID after Down = %q, want %q", got, "vault-console")
	}

	u.handleKeyPress(key.NameTab, 0)
	if got := u.keyboardFocus; got != detailFocusID(detailFieldTitle) {
		t.Fatalf("keyboardFocus after detail Tab = %q, want %q", got, detailFocusID(detailFieldTitle))
	}
}

func TestUIKeyboardNavigationActivatesBreadcrumbs(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:    "vault-console",
				Title: "Vault Console",
				Path:  []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.keyboardFocus = breadcrumbFocusID(0)

	u.handleKeyPress(key.NameRightArrow, 0)
	if got := u.keyboardFocus; got != breadcrumbFocusID(1) {
		t.Fatalf("keyboardFocus after Right = %q, want %q", got, breadcrumbFocusID(1))
	}

	u.handleKeyPress(key.NameReturn, 0)
	if got := u.state.CurrentPath; !slices.Equal(got, []string{"Root"}) {
		t.Fatalf("state.CurrentPath after breadcrumb activation = %v, want [Root]", got)
	}
}

func TestUIKeyboardShortcutsMoveFocusForSearchAndNewEntry(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()
	u.keyboardFocus = listFocusID(0)

	u.handleKeyPress("F", key.ModShortcut)
	if got := u.keyboardFocus; got != focusSearch {
		t.Fatalf("keyboardFocus after shortcut search = %q, want %q", got, focusSearch)
	}

	u.handleKeyPress("N", key.ModShortcut)
	if got := u.state.SelectedEntryID; got != "" {
		t.Fatalf("SelectedEntryID after shortcut new-entry = %q, want empty", got)
	}
	if got := u.keyboardFocus; got != detailFocusID(detailFieldTitle) {
		t.Fatalf("keyboardFocus after shortcut new-entry = %q, want %q", got, detailFocusID(detailFieldTitle))
	}
}

func TestUIAccessibilityLabelsDescribeFocusableControls(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:    "vault-console",
				Title: "Vault Console",
				Path:  []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()

	if got := u.accessibilityLabel(focusSearch); got != "Search vault" {
		t.Fatalf("accessibilityLabel(search) = %q, want %q", got, "Search vault")
	}
	if got := u.accessibilityLabel(breadcrumbFocusID(1)); got != "Navigate to Root" {
		t.Fatalf("accessibilityLabel(breadcrumb) = %q, want %q", got, "Navigate to Root")
	}
	if got := u.accessibilityLabel(listFocusID(0)); got != "Select entry Vault Console" {
		t.Fatalf("accessibilityLabel(list) = %q, want %q", got, "Select entry Vault Console")
	}
	if got := u.accessibilityLabel(detailFocusID(detailFieldPassword)); got != "Edit Password" {
		t.Fatalf("accessibilityLabel(detail password) = %q, want %q", got, "Edit Password")
	}
}

func TestFieldFocusAppearanceScalesForHighDPI(t *testing.T) {
	t.Parallel()

	lo := fieldFocusAppearance(unit.Metric{PxPerDp: 1, PxPerSp: 1}, true)
	hi := fieldFocusAppearance(unit.Metric{PxPerDp: 2.5, PxPerSp: 2.5}, true)
	unfocused := fieldFocusAppearance(unit.Metric{PxPerDp: 1, PxPerSp: 1}, false)

	if got := lo.MinHeight; got != 44 {
		t.Fatalf("fieldFocusAppearance(low).MinHeight = %d, want 44", got)
	}
	if got := hi.MinHeight; got != 110 {
		t.Fatalf("fieldFocusAppearance(high).MinHeight = %d, want 110", got)
	}
	if got := lo.OutlineWidth; got < 2 {
		t.Fatalf("fieldFocusAppearance(low).OutlineWidth = %d, want >= 2", got)
	}
	if hi.OutlineWidth <= lo.OutlineWidth {
		t.Fatalf("fieldFocusAppearance(high).OutlineWidth = %d, want > %d", hi.OutlineWidth, lo.OutlineWidth)
	}
	if lo.OutlineColor == unfocused.OutlineColor {
		t.Fatalf("fieldFocusAppearance().OutlineColor focused = %#v, want distinct from unfocused %#v", lo.OutlineColor, unfocused.OutlineColor)
	}
}

func TestUIActionErrorsAndStatusMessagesAreCapturedForDisplay(t *testing.T) {
	t.Parallel()

	u := newUIWithSession("desktop", &session.Manager{})
	u.vaultPath.SetText("/does/not/exist.kdbx")
	u.masterPassword.SetText("correct horse battery staple")

	u.runAction("open vault", u.openVaultAction)
	if u.errorMessage == "" {
		t.Fatal("errorMessage = empty, want visible action error")
	}

	u = newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{ID: "vault-console", Title: "Vault Console", Username: "dannyocean", Password: "token-1", URL: "https://vault.crew.example.invalid", Path: []string{"Root", "Internet"}},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.runAction("copy username", func() error { return u.copySelectedFieldAction(clipboard.TargetUsername) })
	if u.statusMessage == "" {
		t.Fatal("statusMessage = empty, want visible success status")
	}
}

func TestUIPasswordProfilesAreVisibleInEntryWorkflow(t *testing.T) {
	t.Parallel()

	u := newUIWithSession("desktop", &session.Manager{})

	got := u.passwordProfileOptionsText()
	for _, want := range passwords.DefaultProfileNames() {
		if !strings.Contains(got, want) {
			t.Fatalf("passwordProfileOptionsText() = %q, want profile %q to be visible", got, want)
		}
	}
}

func TestUIGeneratedPasswordFlowsIntoCreateEntryForm(t *testing.T) {
	t.Parallel()

	u := newUIWithSession("desktop", &session.Manager{})
	u.masterPassword.SetText("correct horse battery staple")
	if err := u.createVaultAction(); err != nil {
		t.Fatalf("createVaultAction() error = %v", err)
	}

	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.loadSelectedEntryIntoEditor()
	u.entryID.SetText("entry-1")
	u.entryTitle.SetText("Generated Entry")
	u.entryUsername.SetText("rustyryan")
	u.entryURL.SetText("https://vault.crew.example.invalid")
	u.entryPath.SetText("Root / Internet")
	u.passwordProfile.SetText("memorable")

	if err := u.generatePasswordAction(); err != nil {
		t.Fatalf("generatePasswordAction() error = %v", err)
	}

	generated := u.entryPassword.Text()
	if len(generated) < passwords.DefaultProfiles()["memorable"].Length {
		t.Fatalf("len(entryPassword.Text()) = %d, want at least %d after generate", len(generated), passwords.DefaultProfiles()["memorable"].Length)
	}

	if err := u.saveEntryAction(); err != nil {
		t.Fatalf("saveEntryAction() error = %v", err)
	}

	u.state.SelectedEntryID = "entry-1"
	saved, ok := u.selectedEntry()
	if !ok {
		t.Fatal("selectedEntry() ok = false, want true for saved generated entry")
	}
	if saved.Password != generated {
		t.Fatalf("saved.Password = %q, want generated password %q", saved.Password, generated)
	}
}

func TestUIBannerSurfacePrefersLoadingThenErrorThenStatus(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{})
	u.loadingMessage = "Opening vault..."
	if got := u.bannerSurface(); got.Kind != bannerLoading || got.Message != "Opening vault..." {
		t.Fatalf("bannerSurface() with loading = %#v, want loading banner", got)
	}

	u.loadingMessage = ""
	u.errorMessage = "save failed"
	if got := u.bannerSurface(); got.Kind != bannerError || got.Message != "save failed" {
		t.Fatalf("bannerSurface() with error = %#v, want error banner", got)
	}

	u.errorMessage = ""
	u.statusMessage = "save complete"
	if got := u.bannerSurface(); got.Kind != bannerStatus || got.Message != "save complete" {
		t.Fatalf("bannerSurface() with status = %#v, want status banner", got)
	}
}

func TestUIRunActionNormalizesRemoteSaveConflictsForDisplay(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{})
	u.runAction("save vault", func() error {
		return errors.New("save remote vaults/main.kdbx: " + webdav.ErrConflict.Error())
	})

	if got := u.errorMessage; got != "Save conflict: the remote vault changed. Reopen it and retry the save." {
		t.Fatalf("errorMessage = %q, want normalized save conflict guidance", got)
	}
	if got := u.statusMessage; got != "" {
		t.Fatalf("statusMessage = %q, want empty on conflict", got)
	}
}

func TestUIUsesKeePassGOProductCopy(t *testing.T) {
	t.Parallel()

	if productName != "KeePassGO" {
		t.Fatalf("productName = %q, want %q", productName, "KeePassGO")
	}
	if desktopSubtitle != "KeePass-compatible password management for desktop-first workflows" {
		t.Fatalf("desktopSubtitle = %q, want updated product subtitle", desktopSubtitle)
	}
}

func TestUICopyActionsWriteExpectedClipboardContentsAndSanitizedFeedback(t *testing.T) {
	t.Parallel()

	model := vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	}

	tests := []struct {
		name   string
		target clipboard.Target
		label  string
		want   string
	}{
		{name: "username", target: clipboard.TargetUsername, label: "copy username", want: "dannyocean"},
		{name: "password", target: clipboard.TargetPassword, label: "copy password", want: "token-1"},
		{name: "url", target: clipboard.TargetURL, label: "copy URL", want: "https://vault.crew.example.invalid"},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			u := newUIWithModel("desktop", model)
			writer := &memoryClipboardWriter{}
			u.clipboardWriter = writer
			u.showEntriesSection()
			u.state.NavigateToPath([]string{"Root", "Internet"})
			u.filter()
			u.state.SelectedEntryID = "vault-console"

			u.runAction(tt.label, func() error { return u.copySelectedFieldAction(tt.target) })

			if writer.content != tt.want {
				t.Fatalf("clipboard content = %q, want %q", writer.content, tt.want)
			}
			if u.statusMessage != tt.label+" complete" {
				t.Fatalf("statusMessage = %q, want %q", u.statusMessage, tt.label+" complete")
			}
			if u.errorMessage != "" {
				t.Fatalf("errorMessage = %q, want empty", u.errorMessage)
			}
			if strings.Contains(u.statusMessage, tt.want) {
				t.Fatalf("statusMessage = %q, must not contain copied secret or field value %q", u.statusMessage, tt.want)
			}
		})
	}
}

func TestUICopyActionSanitizesClipboardBackendErrors(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	})
	u.clipboardWriter = failingClipboardWriter{err: os.ErrPermission}
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"

	u.runAction("copy password", func() error { return u.copySelectedFieldAction(clipboard.TargetPassword) })

	if u.errorMessage != clipboard.ErrWriteFailed.Error() {
		t.Fatalf("errorMessage = %q, want %q", u.errorMessage, clipboard.ErrWriteFailed.Error())
	}
	if strings.Contains(u.errorMessage, "token-1") {
		t.Fatalf("errorMessage = %q, must not contain copied password", u.errorMessage)
	}
	if u.statusMessage != "" {
		t.Fatalf("statusMessage = %q, want empty on copy failure", u.statusMessage)
	}
}

func TestUIGeneratedPasswordFlowsIntoEditEntryForm(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				URL:      "https://vault.crew.example.invalid",
				Path:     []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"
	u.loadSelectedEntryIntoEditor()
	u.passwordProfile.SetText("strong")

	if err := u.generatePasswordAction(); err != nil {
		t.Fatalf("generatePasswordAction() error = %v", err)
	}

	generated := u.entryPassword.Text()
	if generated == "token-1" {
		t.Fatal("entryPassword.Text() = token-1, want a newly generated password")
	}
	if len(generated) < passwords.DefaultProfiles()["strong"].Length {
		t.Fatalf("len(entryPassword.Text()) = %d, want at least %d after generate", len(generated), passwords.DefaultProfiles()["strong"].Length)
	}

	if err := u.saveEntryAction(); err != nil {
		t.Fatalf("saveEntryAction() error = %v", err)
	}

	saved, ok := u.selectedEntry()
	if !ok {
		t.Fatal("selectedEntry() ok = false, want true for edited entry")
	}
	if saved.Password != generated {
		t.Fatalf("saved.Password = %q, want generated password %q", saved.Password, generated)
	}
}

func TestUIPasswordRevealTogglesDisplayedPasswordAndLockResetsIt(t *testing.T) {
	t.Parallel()

	u := newUIWithModel("desktop", vault.Model{
		Entries: []vault.Entry{
			{
				ID:       "vault-console",
				Title:    "Vault Console",
				Username: "dannyocean",
				Password: "token-1",
				Path:     []string{"Root", "Internet"},
			},
		},
	})
	u.showEntriesSection()
	u.state.NavigateToPath([]string{"Root", "Internet"})
	u.filter()
	u.state.SelectedEntryID = "vault-console"

	if got := u.detailPasswordValue(); got != "••••••••" {
		t.Fatalf("detailPasswordValue() hidden = %q, want %q", got, "••••••••")
	}

	u.showPassword = true
	if got := u.detailPasswordValue(); got != "token-1" {
		t.Fatalf("detailPasswordValue() revealed = %q, want %q", got, "token-1")
	}

	if err := u.lockAction(); err != nil {
		t.Fatalf("lockAction() error = %v", err)
	}
	if u.showPassword {
		t.Fatal("showPassword = true after lockAction(), want false")
	}
}

type memoryClipboardWriter struct {
	content string
}

func (w *memoryClipboardWriter) WriteText(text string) error {
	w.content = text
	return nil
}

type failingClipboardWriter struct {
	err error
}

func (w failingClipboardWriter) WriteText(string) error {
	return w.err
}

func TestUILocalLifecycleActionsUpdateVisibleStatusMessages(t *testing.T) {
	t.Parallel()

	u := newUIWithSession("desktop", &session.Manager{})
	u.masterPassword.SetText("correct horse battery staple")

	u.runAction("create vault", u.createVaultAction)
	if got := u.statusMessage; got != "create vault complete" {
		t.Fatalf("status after create = %q, want %q", got, "create vault complete")
	}
	if got := u.errorMessage; got != "" {
		t.Fatalf("error after create = %q, want empty", got)
	}

	path := filepath.Join(t.TempDir(), "keepassgo.kdbx")
	u.saveAsPath.SetText(path)
	u.runAction("save-as vault", u.saveAsAction)
	if got := u.statusMessage; got != "save-as vault complete" {
		t.Fatalf("status after save-as = %q, want %q", got, "save-as vault complete")
	}
	if got := u.errorMessage; got != "" {
		t.Fatalf("error after save-as = %q, want empty", got)
	}

	if err := u.state.UpsertEntry(vault.Entry{
		ID:       "vault-console",
		Title:    "Vault Console",
		Username: "dannyocean",
		Password: "token-1",
		URL:      "https://vault.crew.example.invalid",
		Path:     []string{"Root", "Internet"},
	}); err != nil {
		t.Fatalf("UpsertEntry() error = %v", err)
	}

	u.runAction("save vault", u.saveAction)
	if got := u.statusMessage; got != "save vault complete" {
		t.Fatalf("status after save = %q, want %q", got, "save vault complete")
	}
	if got := u.errorMessage; got != "" {
		t.Fatalf("error after save = %q, want empty", got)
	}

	u.runAction("lock vault", u.lockAction)
	if got := u.statusMessage; got != "lock vault complete" {
		t.Fatalf("status after lock = %q, want %q", got, "lock vault complete")
	}
	if got := u.errorMessage; got != "" {
		t.Fatalf("error after lock = %q, want empty", got)
	}

	u.runAction("unlock vault", u.unlockAction)
	if got := u.statusMessage; got != "unlock vault complete" {
		t.Fatalf("status after unlock = %q, want %q", got, "unlock vault complete")
	}
	if got := u.errorMessage; got != "" {
		t.Fatalf("error after unlock = %q, want empty", got)
	}

	reopened := newUIWithSession("desktop", &session.Manager{})
	reopened.masterPassword.SetText("correct horse battery staple")
	reopened.vaultPath.SetText(path)
	reopened.runAction("open vault", reopened.openVaultAction)
	if got := reopened.statusMessage; got != "open vault complete" {
		t.Fatalf("status after open = %q, want %q", got, "open vault complete")
	}
	if got := reopened.errorMessage; got != "" {
		t.Fatalf("error after open = %q, want empty", got)
	}
}

func TestUILocalLifecycleActionErrorsAreVisibleAndSpecific(t *testing.T) {
	t.Parallel()

	t.Run("save without configured path", func(t *testing.T) {
		t.Parallel()

		u := newUIWithSession("desktop", &session.Manager{})
		u.masterPassword.SetText("correct horse battery staple")

		u.runAction("create vault", u.createVaultAction)
		u.runAction("save vault", u.saveAction)

		if got := u.statusMessage; got != "" {
			t.Fatalf("status after failed save = %q, want empty", got)
		}
		if got := u.errorMessage; !strings.Contains(got, session.ErrNoPath.Error()) {
			t.Fatalf("error after failed save = %q, want %q", got, session.ErrNoPath.Error())
		}
	})

	t.Run("save-as without target path", func(t *testing.T) {
		t.Parallel()

		u := newUIWithSession("desktop", &session.Manager{})
		u.masterPassword.SetText("correct horse battery staple")

		u.runAction("create vault", u.createVaultAction)
		u.runAction("save-as vault", u.saveAsAction)

		if got := u.statusMessage; got != "" {
			t.Fatalf("status after failed save-as = %q, want empty", got)
		}
		if got := u.errorMessage; got != "save-as path is required" {
			t.Fatalf("error after failed save-as = %q, want %q", got, "save-as path is required")
		}
	})

	t.Run("open without target path", func(t *testing.T) {
		t.Parallel()

		u := newUIWithSession("desktop", &session.Manager{})
		u.masterPassword.SetText("correct horse battery staple")

		u.runAction("open vault", u.openVaultAction)

		if got := u.statusMessage; got != "" {
			t.Fatalf("status after failed open = %q, want empty", got)
		}
		if got := u.errorMessage; got != "vault path is required" {
			t.Fatalf("error after failed open = %q, want %q", got, "vault path is required")
		}
	})

	t.Run("open unreadable path", func(t *testing.T) {
		t.Parallel()

		u := newUIWithSession("desktop", &session.Manager{})
		u.masterPassword.SetText("correct horse battery staple")
		u.vaultPath.SetText(filepath.Join(t.TempDir(), "missing.kdbx"))

		u.runAction("open vault", u.openVaultAction)

		if got := u.statusMessage; got != "" {
			t.Fatalf("status after unreadable open = %q, want empty", got)
		}
		if got := u.errorMessage; got == "" || !strings.Contains(got, "read ") {
			t.Fatalf("error after unreadable open = %q, want read failure", got)
		}
	})

	t.Run("open decode failure", func(t *testing.T) {
		t.Parallel()

		path := filepath.Join(t.TempDir(), "corrupt.kdbx")
		if err := os.WriteFile(path, []byte("not-a-kdbx"), 0o600); err != nil {
			t.Fatalf("WriteFile(corrupt) error = %v", err)
		}

		u := newUIWithSession("desktop", &session.Manager{})
		u.masterPassword.SetText("correct horse battery staple")
		u.vaultPath.SetText(path)

		u.runAction("open vault", u.openVaultAction)

		if got := u.statusMessage; got != "" {
			t.Fatalf("status after decode failure = %q, want empty", got)
		}
		if got := u.errorMessage; got == "" || !strings.Contains(got, "decode kdbx") {
			t.Fatalf("error after decode failure = %q, want decode kdbx failure", got)
		}
	})

	t.Run("open invalid master key", func(t *testing.T) {
		t.Parallel()

		path := filepath.Join(t.TempDir(), "vault.kdbx")
		var encoded bytes.Buffer
		if err := vault.SaveKDBX(&encoded, vault.Model{}, "correct horse battery staple"); err != nil {
			t.Fatalf("SaveKDBX() error = %v", err)
		}
		if err := os.WriteFile(path, encoded.Bytes(), 0o600); err != nil {
			t.Fatalf("WriteFile(vault) error = %v", err)
		}

		u := newUIWithSession("desktop", &session.Manager{})
		u.masterPassword.SetText("wrong password")
		u.vaultPath.SetText(path)

		u.runAction("open vault", u.openVaultAction)

		if got := u.statusMessage; got != "" {
			t.Fatalf("status after invalid master open = %q, want empty", got)
		}
		if got := u.errorMessage; !strings.Contains(got, vault.ErrInvalidMasterKey.Error()) {
			t.Fatalf("error after invalid master open = %q, want %q", got, vault.ErrInvalidMasterKey.Error())
		}
	})

	t.Run("unlock invalid master key", func(t *testing.T) {
		t.Parallel()

		u := newUIWithSession("desktop", &session.Manager{})
		u.masterPassword.SetText("correct horse battery staple")
		if err := u.createVaultAction(); err != nil {
			t.Fatalf("createVaultAction() error = %v", err)
		}
		if err := u.lockAction(); err != nil {
			t.Fatalf("lockAction() error = %v", err)
		}

		u.masterPassword.SetText("wrong password")
		u.runAction("unlock vault", u.unlockAction)

		if got := u.statusMessage; got != "" {
			t.Fatalf("status after invalid unlock = %q, want empty", got)
		}
		if got := u.errorMessage; !strings.Contains(got, vault.ErrInvalidMasterKey.Error()) {
			t.Fatalf("error after invalid unlock = %q, want %q", got, vault.ErrInvalidMasterKey.Error())
		}
	})
}

func TestUILocalLifecycleActionsClearStaleMessagesOnSuccess(t *testing.T) {
	t.Parallel()

	u := newUIWithSession("desktop", &session.Manager{})
	u.masterPassword.SetText("correct horse battery staple")

	u.runAction("save vault", u.saveAction)
	if u.errorMessage == "" {
		t.Fatal("error after failed save = empty, want visible failure")
	}

	u.runAction("create vault", u.createVaultAction)
	if got := u.errorMessage; got != "" {
		t.Fatalf("error after create = %q, want cleared", got)
	}
	if got := u.statusMessage; got != "create vault complete" {
		t.Fatalf("status after create = %q, want %q", got, "create vault complete")
	}
}

func TestUICurrentMasterKeyReportsUnreadableKeyFile(t *testing.T) {
	t.Parallel()

	u := newUIWithSession("desktop", &session.Manager{})
	u.keyFilePath.SetText(filepath.Join(t.TempDir(), "missing.key"))

	_, err := u.currentMasterKey()
	if err == nil {
		t.Fatal("currentMasterKey() error = nil, want read failure")
	}
	if !errors.Is(err, os.ErrNotExist) {
		t.Fatalf("currentMasterKey() error = %v, want os.ErrNotExist", err)
	}
}