builder.go

package main

import (
	"fmt"
	"io"
	"strings"

	"github.com/charmbracelet/bubbles/key"
	"github.com/charmbracelet/bubbles/list"
	tea "github.com/charmbracelet/bubbletea"
)

type Item string

func (i Item) FilterValue() string { return "" }

type ItemDelegate struct{}

func (d ItemDelegate) Height() int                             { return 1 }
func (d ItemDelegate) Spacing() int                            { return 0 }
func (d ItemDelegate) Update(_ tea.Msg, _ *list.Model) tea.Cmd { return nil }
func (d ItemDelegate) Render(w io.Writer, m list.Model, index int, listItem list.Item) {
	i, ok := listItem.(Item)
	if !ok {
		return
	}

	str := fmt.Sprintf("%d. %s", index+1, i)

	fn := ItemStyle.Render
	if index == m.Index() {
		fn = func(s ...string) string {
			return SelectedItemStyle.Render("> " + strings.Join(s, " "))
		}
	}
	fmt.Fprint(w, fn(str))
}

func BuildItems(branches []string) []list.Item {
	var items []list.Item
	for _, branch := range branches {
		items = append(items, Item(branch))
	}
	return items
}

func ListBuilder(items []list.Item) list.Model {
	l := list.New(items, ItemDelegate{}, DefaultWidth, ListHeight)
	l.Title = TitleDescription
	l.SetShowStatusBar(false)
	l.SetFilteringEnabled(false)
	l.Styles.Title = TitleStyle
	l.Styles.PaginationStyle = PaginationStyle
	l.Styles.HelpStyle = HelpStyle
	l.KeyMap = defaultKeyMap()
	return l
}

func defaultKeyMap() list.KeyMap {
	return list.KeyMap{
		// Browsing.
		CursorUp: key.NewBinding(
			key.WithKeys("up", "k", "shift+tab"),
			key.WithHelp("↑/k", "up"),
		),
		CursorDown: key.NewBinding(
			key.WithKeys("down", "j", "tab"),
			key.WithHelp("↓/j", "down"),
		),
		PrevPage: key.NewBinding(
			key.WithKeys("left", "h", "pgup", "b", "u"),
			key.WithHelp("←/h/pgup", "prev page"),
		),
		NextPage: key.NewBinding(
			key.WithKeys("right", "l", "pgdown", "f", "d"),
			key.WithHelp("→/l/pgdn", "next page"),
		),
		GoToStart: key.NewBinding(
			key.WithKeys("home", "g"),
			key.WithHelp("g/home", "go to start"),
		),
		GoToEnd: key.NewBinding(
			key.WithKeys("end", "G"),
			key.WithHelp("G/end", "go to end"),
		),
		// Toggle help.
		ShowFullHelp: key.NewBinding(
			key.WithKeys("?"),
			key.WithHelp("?", "more"),
		),
		CloseFullHelp: key.NewBinding(
			key.WithKeys("?"),
			key.WithHelp("?", "close help"),
		),

		// Quitting.
		Quit: key.NewBinding(
			key.WithKeys("q", "esc"),
			key.WithHelp("q", "quit"),
		),
		ForceQuit: key.NewBinding(key.WithKeys("ctrl+c")),
	}
}