feat: interactive list when running empty root command

internal/tui/list.go

@@ -0,0 +1,193 @@
+package tui
+
+import (
+	"fmt"
+	"strings"
+
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/yeho/doks/internal/registry"
+)
+
+type ListModel struct {
+	entries  []*registry.Entry
+	cursor   int
+	selected *registry.Entry
+	quitting bool
+	width    int
+	height   int
+}
+
+func NewListModel(entries []*registry.Entry) ListModel {
+	return ListModel{
+		entries: entries,
+		cursor:  0,
+	}
+}
+
+func (m ListModel) Init() tea.Cmd {
+	return nil
+}
+
+func (m ListModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case tea.KeyMsg:
+		switch msg.String() {
+		case "ctrl+c", "q", "esc":
+			m.quitting = true
+			return m, tea.Quit
+
+		case "enter":
+			if len(m.entries) > 0 && m.cursor < len(m.entries) {
+				m.selected = m.entries[m.cursor]
+			}
+			return m, tea.Quit
+
+		case "up", "k":
+			if m.cursor > 0 {
+				m.cursor--
+			}
+
+		case "down", "j":
+			if m.cursor < len(m.entries)-1 {
+				m.cursor++
+			}
+
+		case "home", "g":
+			m.cursor = 0
+
+		case "end", "G":
+			m.cursor = len(m.entries) - 1
+		}
+
+	case tea.WindowSizeMsg:
+		m.width = msg.Width
+		m.height = msg.Height
+	}
+
+	return m, nil
+}
+
+func (m ListModel) View() string {
+	if len(m.entries) == 0 {
+		return NoResultsStyle.Render("No documents registered")
+	}
+
+	var b strings.Builder
+
+	// Title
+	title := fmt.Sprintf("📚 Registered Documents (%d total)", len(m.entries))
+	b.WriteString(TitleStyle.Render(title))
+	b.WriteString("\n\n")
+
+	// Entries with pagination
+	visibleEntries := m.entries
+	maxVisible := 10
+	startIdx := 0
+	if len(visibleEntries) > maxVisible {
+		// Show entries around cursor
+		startIdx = m.cursor - maxVisible/2
+		if startIdx < 0 {
+			startIdx = 0
+		}
+		endIdx := startIdx + maxVisible
+		if endIdx > len(visibleEntries) {
+			endIdx = len(visibleEntries)
+			startIdx = endIdx - maxVisible
+			if startIdx < 0 {
+				startIdx = 0
+			}
+		}
+		visibleEntries = m.entries[startIdx:endIdx]
+	}
+
+	for i, entry := range visibleEntries {
+		actualIdx := startIdx + i
+		isSelected := actualIdx == m.cursor
+
+		// Cursor indicator
+		cursor := "  "
+		if isSelected {
+			cursor = CursorStyle.Render("> ")
+		}
+
+		// Key - use different styles for selected
+		var key string
+		if isSelected {
+			key = EntryKeySelected.Render(entry.Key)
+		} else {
+			key = EntryKeyStyle.Render(entry.Key)
+		}
+
+		// Tags
+		var tagsStr string
+		if len(entry.Tags) > 0 {
+			tags := make([]string, len(entry.Tags))
+			for i, tag := range entry.Tags {
+				tags[i] = "#" + tag
+			}
+			tagsStr = " " + TagsStyle.Render(strings.Join(tags, " "))
+		}
+
+		// Symlink indicator
+		var symlinkStr string
+		if entry.HasSymlink {
+			symlinkStr = " 🔗"
+		}
+
+		// Description (truncated)
+		var descStr string
+		if entry.Description != "" {
+			desc := entry.Description
+			maxDescLen := 40
+			if len(desc) > maxDescLen {
+				desc = desc[:maxDescLen-3] + "..."
+			}
+			if isSelected {
+				descStr = " " + MatchTextStyleSelected.Render("- "+desc)
+			} else {
+				descStr = " " + MatchTextStyle.Render("- "+desc)
+			}
+		}
+
+		line := fmt.Sprintf("%s%s%s%s%s", cursor, key, tagsStr, symlinkStr, descStr)
+		b.WriteString(line)
+		b.WriteString("\n")
+	}
+
+	// Scroll indicator
+	if len(m.entries) > maxVisible {
+		scrollInfo := fmt.Sprintf("\n  Showing %d-%d of %d",
+			startIdx+1,
+			min(startIdx+maxVisible, len(m.entries)),
+			len(m.entries))
+		b.WriteString(CountStyle.Render(scrollInfo))
+		b.WriteString("\n")
+	}
+
+	// Help
+	help := "↑/k up • ↓/j down • g/G first/last • enter select • q/esc quit"
+	b.WriteString(HelpStyle.Render(help))
+
+	return b.String()
+}
+
+func (m ListModel) Selected() *registry.Entry {
+	return m.selected
+}
+
+func (m ListModel) Quitting() bool {
+	return m.quitting
+}
+
+func RunList(entries []*registry.Entry) (*registry.Entry, error) {
+	model := NewListModel(entries)
+	p := tea.NewProgram(model)
+
+	finalModel, err := p.Run()
+	if err != nil {
+		return nil, err
+	}
+
+	m := finalModel.(ListModel)
+	return m.Selected(), nil
+}