feat: safely control Shell Target

internal/tui/model.go

@@ -8,6 +8,7 @@ import (
 
 	"proxyctl/internal/app"
 	"proxyctl/internal/profile"
+	"proxyctl/internal/target"
 )
 
 type page int
@@ -32,6 +33,11 @@ type Model struct {
 	form        formState
 	confirm     bool
 	status      string
+	applying    bool
+}
+
+type targetOperationDone struct {
+	result app.Result
 }
 
 func NewModel(application app.Module) Model {
@@ -41,6 +47,16 @@ func NewModel(application app.Module) Model {
 func (m Model) Init() tea.Cmd { return nil }
 
 func (m Model) Update(message tea.Msg) (tea.Model, tea.Cmd) {
+	if completed, ok := message.(targetOperationDone); ok {
+		m.applying = false
+		m.snapshot = completed.result.Snapshot
+		if completed.result.Err != nil {
+			m.status = "\x1b[31mError: " + completed.result.Err.Error() + "\x1b[0m"
+		} else {
+			m.status = completed.result.Notice
+		}
+		return m, nil
+	}
 	key, ok := message.(tea.KeyMsg)
 	if !ok {
 		return m, nil
@@ -58,10 +74,29 @@ func (m Model) Update(message tea.Msg) (tea.Model, tea.Cmd) {
 }
 
 func (m Model) updateMain(key tea.KeyMsg) (tea.Model, tea.Cmd) {
+	targets := m.availableTargets()
 	switch key.String() {
 	case "p":
 		m.page = profilesPage
 		m.status = ""
+	case "up", "k":
+		if !m.applying && m.selected > 0 {
+			m.selected--
+		}
+	case "down", "j":
+		if !m.applying && m.selected+1 < len(targets) {
+			m.selected++
+		}
+	case " ":
+		if !m.applying && m.selected >= 0 && m.selected < len(targets) {
+			selected := targets[m.selected]
+			desired := selected.State != target.Enabled
+			m.applying = true
+			m.status = ""
+			return m, func() tea.Msg {
+				return targetOperationDone{result: m.application.Dispatch(app.Intent{Kind: app.SetTargetDesired, TargetID: selected.ID, Enabled: desired})}
+			}
+		}
 	case "q", "esc", "ctrl+c":
 		return m, tea.Quit
 	}
@@ -208,6 +243,16 @@ func (m Model) View() string {
 	}
 }
 
+func (m Model) availableTargets() []app.TargetSnapshot {
+	var result []app.TargetSnapshot
+	for _, item := range m.snapshot.Targets {
+		if item.Available {
+			result = append(result, item)
+		}
+	}
+	return result
+}
+
 func (m Model) mainView() string {
 	var b strings.Builder
 	b.WriteString("proxyctl — Target panel\n\n")
@@ -217,8 +262,31 @@ func (m Model) mainView() string {
 	} else {
 		fmt.Fprintf(&b, "Active Profile: %s\n", m.snapshot.ActiveProfile)
 	}
-	b.WriteString("\nNo Targets are available in this build.\n")
-	b.WriteString("\np: manage Proxy Profiles  q/Esc: quit\n")
+	targets := m.availableTargets()
+	if len(targets) == 0 {
+		b.WriteString("\nNo Targets are available in this build.\n")
+	} else {
+		b.WriteString("\nTargets\n")
+		for i, item := range targets {
+			cursor := "  "
+			if i == m.selected {
+				cursor = "> "
+			}
+			state := string(item.State)
+			if m.applying && i == m.selected {
+				state = "Applying…"
+			}
+			fmt.Fprintf(&b, "%s[%-9s] %s\n", cursor, state, item.Description.Name)
+		}
+		if m.selected >= 0 && m.selected < len(targets) {
+			selected := targets[m.selected]
+			fmt.Fprintf(&b, "\n%s\n%s\n", selected.Description.Summary, selected.Evidence)
+		}
+	}
+	b.WriteString("\nSpace: toggle  ↑/k ↓/j: select  p: manage Proxy Profiles  q/Esc: quit\n")
+	if m.status != "" {
+		fmt.Fprintf(&b, "\n%s\n", m.status)
+	}
 	return b.String()
 }