fix(tui): center all tabs, full-screen SFTP, muted inline keybindings

pkg/tui/key_list_tab.go

@@ -7,6 +7,7 @@ import (
 	"sync"
 
 	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
 
 	"git.tukangketik.id/swanadiva/hostkeeper/internal/models"
 	"git.tukangketik.id/swanadiva/hostkeeper/pkg/storage"
@@ -134,52 +135,96 @@ func (t *KeyListTab) View() string {
 	t.mu.Lock()
 	defer t.mu.Unlock()
 
-	var b strings.Builder
-
-	b.WriteString(AppTitleStyle.Render("SSH Key Pairs"))
-	b.WriteString("\n\n")
-
-	switch t.state {
-	case keyListLoading:
-		b.WriteString(SubtitleStyle.Render("Loading keys..."))
-		return b.String()
-	case keyListError:
-		b.WriteString(ErrorStyle.Render(fmt.Sprintf("Error: %v", t.err)))
-		b.WriteString("\n\n")
-		b.WriteString(SubtitleStyle.Render("Press Esc to go back"))
+	if t.state == keyListLoading {
+		return lipgloss.PlaceHorizontal(t.width, lipgloss.Center,
+			SubtitleStyle.Render("Loading keys..."))
+	}
+	if t.state == keyListError {
+		var b strings.Builder
+		b.WriteString(lipgloss.PlaceHorizontal(t.width, lipgloss.Center,
+			ErrorStyle.Render(fmt.Sprintf("Error: %v", t.err))))
+		b.WriteString("\n")
+		b.WriteString(lipgloss.PlaceHorizontal(t.width, lipgloss.Center,
+			SubtitleStyle.Render("Press Esc to go back")))
 		return b.String()
 	}
 
+	type styledRow struct {
+		text  string
+		plain string
+	}
+	var rows []styledRow
+
+	title := "SSH Key Pairs"
+	titlePlain := title
+
 	if t.err != nil {
-		b.WriteString(ErrorStyle.Render(fmt.Sprintf("Error: %v", t.err)))
-		b.WriteString("\n\n")
+		errLine := fmt.Sprintf("Error: %v", t.err)
+		rows = append(rows, styledRow{text: ErrorStyle.Render(errLine), plain: errLine})
 	}
 
 	if len(t.keys) == 0 {
-		b.WriteString(SubtitleStyle.Render("No SSH keys stored."))
-		b.WriteString("\n")
-		b.WriteString(SubtitleStyle.Render("Press Ctrl+N to add a new key."))
+		empty := "No SSH keys stored."
+		hint := "Press Ctrl+N to add a new key."
+		rows = append(rows, styledRow{text: SubtitleStyle.Render(empty), plain: empty})
+		rows = append(rows, styledRow{text: SubtitleStyle.Render(hint), plain: hint})
 	} else {
 		for i, key := range t.keys {
-			var line string
+			var plain string
 			if key.Type != "" {
-				line = fmt.Sprintf("  %s  (%s)", key.Name, key.Type)
+				plain = fmt.Sprintf("  %s  (%s)", key.Name, key.Type)
 			} else {
-				line = fmt.Sprintf("  %s", key.Name)
+				plain = fmt.Sprintf("  %s", key.Name)
 			}
-
+			var styled string
 			if i == t.selected {
-				b.WriteString(SelectedStyle.Render(line))
+				styled = lipgloss.NewStyle().
+					Foreground(gbFg).
+					Background(gbBgSel).
+					Bold(true).
+					Render("▸ " + strings.TrimLeft(plain, " "))
 			} else {
-				b.WriteString(HostNameStyle.Render(line))
+				styled = lipgloss.NewStyle().Foreground(gbFg).Render(plain)
 			}
-			b.WriteString("\n")
+			rows = append(rows, styledRow{text: styled, plain: plain})
 		}
 	}
 
-	b.WriteString("\n")
-	b.WriteString(SubtitleStyle.Render("Ctrl+N:add  Ctrl+E:edit  D:delete  Esc:back"))
+	footerPlain := "Ctrl+N:add  Ctrl+E:edit  D:delete  Esc:back  Ctrl+Tab:switch  Ctrl+Q:close"
+	footer := styledRow{text: SubtitleStyle.Render(footerPlain), plain: footerPlain}
 
+	widestRow := lipgloss.Width(titlePlain)
+	for _, r := range rows {
+		if w := lipgloss.Width(r.plain); w > widestRow {
+			widestRow = w
+		}
+	}
+	if w := lipgloss.Width(footer.plain); w > widestRow {
+		widestRow = w
+	}
+
+	const sidePad = 6
+	targetW := widestRow + sidePad*2
+	rowShift := (targetW - widestRow) / 2
+
+	var inner strings.Builder
+
+	titleStyled := lipgloss.NewStyle().Bold(true).Foreground(gbYellow).Render(titlePlain)
+	inner.WriteString(lipgloss.PlaceHorizontal(targetW, lipgloss.Center, titleStyled))
+	inner.WriteString("\n\n")
+
+	shift := strings.Repeat(" ", rowShift)
+	for _, r := range rows {
+		line := lipgloss.PlaceHorizontal(targetW, lipgloss.Left, shift+r.text)
+		inner.WriteString(line)
+		inner.WriteString("\n")
+	}
+	inner.WriteString("\n")
+	inner.WriteString(lipgloss.PlaceHorizontal(targetW, lipgloss.Center, footer.text))
+
+	box := BorderStyle.Render(inner.String())
+	var b strings.Builder
+	b.WriteString(lipgloss.PlaceHorizontal(t.width, lipgloss.Center, box))
 	return b.String()
 }