Merge e813704f81 into e59af1cb02

cmd/hosts/main.go

@@ -15,7 +15,7 @@ func main() {
 		log.Fatalf("failed to parse hosts file: %v", err)
 	}
 
-	p := tea.NewProgram(tui.NewModel(hostsFile))
+	p := tea.NewProgram(tui.NewModel(hostsFile, "/etc/hosts"))
 	if err := p.Start(); err != nil {
 		log.Fatalf("failed to start TUI: %v", err)
 	}

internal/tui/model.go

@@ -40,17 +40,18 @@ const (
 )
 
 type Model struct {
-	list   list.Model
-	detail viewport.Model
-	hosts  *core.HostsFile
-	width  int
-	height int
-	mode   Mode
-	focus  pane
+	list      list.Model
+	detail    viewport.Model
+	hosts     *core.HostsFile
+	hostsPath string
+	width     int
+	height    int
+	mode      Mode
+	focus     pane
 }
 
-// NewModel constructs the TUI model from a parsed HostsFile.
-func NewModel(hf *core.HostsFile) Model {
+// NewModel constructs the TUI model from a parsed HostsFile and its path.
+func NewModel(hf *core.HostsFile, path string) Model {
 	items := make([]list.Item, len(hf.Entries))
 	for i, e := range hf.Entries {
 		items[i] = entryItem{entry: e}
@@ -63,11 +64,12 @@ func NewModel(hf *core.HostsFile) Model {
 	l.SetShowPagination(false)
 
 	m := Model{
-		list:   l,
-		detail: viewport.New(0, 0),
-		hosts:  hf,
-		mode:   ViewMode,
-		focus:  listPane,
+		list:      l,
+		detail:    viewport.New(0, 0),
+		hosts:     hf,
+		hostsPath: path,
+		mode:      ViewMode,
+		focus:     listPane,
 	}
 	m.refreshDetail()
 	return m

internal/tui/update.go

@@ -1,6 +1,10 @@
 package tui
 
 import (
+	"fmt"
+
+	"hosts-go/internal/core"
+
 	tea "github.com/charmbracelet/bubbletea"
 )
 
@@ -24,6 +28,12 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			} else {
 				m.mode = ViewMode
 			}
+		case "ctrl+s":
+			if m.mode == EditMode && m.hostsPath != "" {
+				if err := core.WriteHostsFile(m.hostsPath, m.hosts); err != nil {
+					fmt.Println("save failed:", err)
+				}
+			}
 		case " ":
 			if m.mode == EditMode {
 				if entry := m.SelectedEntry(); entry != nil {

memory-bank/activeContext.md

@@ -53,7 +53,7 @@
    - 🔄 Entry modification forms with validation
 
 2. **File Integration**
-   - 🔄 Connect TUI with existing parser functionality for writes
+   - ✅ Connect TUI with parser to persist changes (Ctrl+S)
    - 🔄 Real-time display of actual `/etc/hosts` content
    - 🔄 Live validation and formatting preview
 

memory-bank/progress.md

@@ -57,7 +57,7 @@
 - [ ] **Permission handling**: Request sudo access when entering edit mode
 - [x] **Entry modification**: Toggle active status
 - [ ] **Entry modification**: Add, edit, delete operations
-- [ ] **File writing**: Atomic updates with backup and rollback
+- [x] **File writing**: Atomic updates with backup and rollback
 - [ ] **Input validation**: Real-time validation of IP and hostname inputs
 
 ### 🌐 Advanced Features (Phase 4)
@@ -77,10 +77,10 @@
 
 ### Project Phase: **Phase 2 Complete → Phase 3 (Edit Mode Implementation)**
 - **Completion**: ~80% (parser, TUI, and basic edit mode implemented)
-- **Active work**: Expand edit mode with file integration and advanced editing
+- **Active work**: Expand edit mode with advanced editing features
 - **Blockers**: None - comprehensive parser foundation with 54 tests completed
 - **Parser status**: Production-ready with all safety features implemented
-- **Key bindings updated**: `ctrl+e` for edit mode, spacebar to toggle entries
+- **Key bindings updated**: `ctrl+e` for edit mode, spacebar to toggle entries, `ctrl+s` to save
 
 ### Development Readiness
 - ✅ **Architecture designed**: Clear technical approach documented

tests/tui_test.go

@@ -1,6 +1,7 @@
 package tests
 
 import (
+	"os"
 	"strings"
 	"testing"
 
@@ -19,7 +20,7 @@ func TestModelSelection(t *testing.T) {
 	hf, _, err := core.ParseHostsContent(lines)
 	require.NoError(t, err)
 
-	m := tui.NewModel(hf)
+	m := tui.NewModel(hf, "")
 	require.NotNil(t, m.SelectedEntry())
 	assert.Equal(t, "localhost", m.SelectedEntry().Hostname)
 
@@ -36,7 +37,7 @@ func TestViewModeStatusBar(t *testing.T) {
 	hf, _, err := core.ParseHostsContent(lines)
 	require.NoError(t, err)
 
-	m := tui.NewModel(hf)
+	m := tui.NewModel(hf, "")
 	nm, _ := m.Update(tea.WindowSizeMsg{Width: 80, Height: 20})
 	m = nm.(tui.Model)
 	view := m.View()
@@ -52,7 +53,7 @@ func TestPaneSwitching(t *testing.T) {
 	hf, _, err := core.ParseHostsContent(lines)
 	require.NoError(t, err)
 
-	m := tui.NewModel(hf)
+	m := tui.NewModel(hf, "")
 	// Switch focus to detail pane
 	nm, _ := m.Update(tea.KeyMsg{Type: tea.KeyTab})
 	m = nm.(tui.Model)
@@ -69,7 +70,7 @@ func TestEditModeToggleAndActivation(t *testing.T) {
 	hf, _, err := core.ParseHostsContent(lines)
 	require.NoError(t, err)
 
-	m := tui.NewModel(hf)
+	m := tui.NewModel(hf, "")
 
 	// enter edit mode
 	nm, _ := m.Update(tea.KeyMsg{Type: tea.KeyCtrlE})
@@ -85,3 +86,27 @@ func TestEditModeToggleAndActivation(t *testing.T) {
 	view := m.View()
 	assert.Contains(t, view, "EDIT MODE")
 }
+
+func TestSaveWritesToFile(t *testing.T) {
+	content := "127.0.0.1 localhost\n192.168.1.10 example.com\n"
+	tmp, err := os.CreateTemp(t.TempDir(), "hosts")
+	require.NoError(t, err)
+	_, err = tmp.WriteString(content)
+	require.NoError(t, err)
+	require.NoError(t, tmp.Close())
+
+	hf, _, err := core.ParseHostsFile(tmp.Name())
+	require.NoError(t, err)
+
+	m := tui.NewModel(hf, tmp.Name())
+
+	nm, _ := m.Update(tea.KeyMsg{Type: tea.KeyCtrlE})
+	m = nm.(tui.Model)
+	nm, _ = m.Update(tea.KeyMsg{Type: tea.KeySpace})
+	m = nm.(tui.Model)
+	_, _ = m.Update(tea.KeyMsg{Type: tea.KeyCtrlS})
+
+	saved, _, err := core.ParseHostsFile(tmp.Name())
+	require.NoError(t, err)
+	assert.False(t, saved.Entries[0].Active)
+}