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package tui
// An example Bubble Tea server. This will put an ssh session into alt screen
// and continually print up to date terminal information.
import (
"fmt"
"io/fs"
"net"
"git.sr.ht/~a73x/home"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/glamour"
"github.com/charmbracelet/lipgloss"
"github.com/charmbracelet/log"
"github.com/charmbracelet/ssh"
"github.com/charmbracelet/wish"
"github.com/charmbracelet/wish/activeterm"
"github.com/charmbracelet/wish/bubbletea"
"github.com/charmbracelet/wish/logging"
)
func New(host, port string) (*ssh.Server, error) {
s, err := wish.NewServer(
wish.WithAddress(net.JoinHostPort(host, port)),
wish.WithHostKeyPath(".ssh/id_ed25519"),
wish.WithMiddleware(
bubbletea.Middleware(teaHandler),
activeterm.Middleware(), // Bubble Tea apps usually require a PTY.
logging.Middleware(),
),
)
if err != nil {
log.Error("Could not start server", "error", err)
}
return s, err
}
// You can wire any Bubble Tea model up to the middleware with a function that
// handles the incoming ssh.Session. Here we just grab the terminal info and
// pass it to the new model. You can also return tea.ProgramOptions (such as
// tea.WithAltScreen) on a session by session basis.
func teaHandler(s ssh.Session) (tea.Model, []tea.ProgramOption) {
// This should never fail, as we are using the activeterm middleware.
pty, _, _ := s.Pty()
// When running a Bubble Tea app over SSH, you shouldn't use the default
// lipgloss.NewStyle function.
// That function will use the color profile from the os.Stdin, which is the
// server, not the client.
// We provide a MakeRenderer function in the bubbletea middleware package,
// so you can easily get the correct renderer for the current session, and
// use it to create the styles.
// The recommended way to use these styles is to then pass them down to
// your Bubble Tea model.
renderer := bubbletea.MakeRenderer(s)
txtStyle := renderer.NewStyle().Foreground(lipgloss.Color("10"))
quitStyle := renderer.NewStyle().Foreground(lipgloss.Color("8"))
bg := "light"
if renderer.HasDarkBackground() {
bg = "dark"
}
posts, err := home.Content.ReadDir("posts")
if err != nil {
// fk knows
}
postFiles := make([]string, 0, len(posts))
for _, post := range posts {
postFiles = append(postFiles, "posts/"+post.Name())
}
m := model{
term: pty.Term,
profile: renderer.ColorProfile().Name(),
width: pty.Window.Width,
height: pty.Window.Height,
bg: bg,
txtStyle: txtStyle,
quitStyle: quitStyle,
posts: postFiles,
}
return m, []tea.ProgramOption{tea.WithAltScreen()}
}
// Just a generic tea.Model to demo terminal information of ssh.
type model struct {
term string
profile string
width int
height int
bg string
txtStyle lipgloss.Style
quitStyle lipgloss.Style
posts []string
cursor int
viewer *PostModel
err error
}
func (m model) Init() tea.Cmd {
return nil
}
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
var cmds []tea.Cmd
if m.viewer != nil {
switch msg := msg.(type) {
case tea.KeyMsg:
switch msg.String() {
case "q", "ctrl+c":
m.viewer = nil
return m, nil
case "esc":
return m, nil
}
}
viewer, cmd := m.viewer.Update(msg)
m.viewer = &viewer
return m, cmd
}
switch msg := msg.(type) {
case tea.WindowSizeMsg:
m.height = msg.Height
m.width = msg.Width
case tea.KeyMsg:
switch msg.String() {
case "q", "ctrl+c":
return m, tea.Quit
case "up", "k":
if m.cursor > 0 {
m.cursor--
}
case "down", "j":
if m.cursor < len(m.posts)-1 {
m.cursor++
}
case "enter":
content, err := fs.ReadFile(home.Content, m.posts[m.cursor])
if err != nil {
m.err = err
return m, nil
}
out, err := glamour.Render(string(content), "dark")
if err != nil {
m.err = err
return m, nil
}
m.viewer = &PostModel{
content: out,
}
fakeWindowMsg := tea.WindowSizeMsg{
Width: m.width,
Height: m.height - 1,
}
viewer, cmd := m.viewer.Update(fakeWindowMsg)
m.viewer = &viewer
return m, cmd
}
}
return m, tea.Batch(cmds...)
}
func (m model) View() string {
if m.err != nil {
return m.err.Error()
}
if m.viewer != nil {
return m.viewer.View() + "\n arrow keys to scroll and q to go back"
}
s := "a73x\n\n"
for i, choice := range m.posts {
// Is the cursor pointing at this choice?
cursor := " " // no cursor
if m.cursor == i {
cursor = ">" // cursor!
}
// Render the row
s += fmt.Sprintf("%s %s\n", cursor, choice)
}
s += "\narrow keys to select post and enter to select"
s += "\npress q to quit"
return s
}
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