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package client
import (
"fmt"
"log"
"strings"
"github.com/charmbracelet/bubbles/cursor"
"github.com/charmbracelet/bubbles/textarea"
"github.com/charmbracelet/bubbles/viewport"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"github.com/kyren223/eko/pkg/assert"
)
func startUI() {
p := tea.NewProgram(initialModel(), tea.WithAltScreen())
if _, err := p.Run(); err != nil {
log.Println("charm ui error:", err)
}
p.
}
type model struct {
viewport viewport.Model
messages []string
textarea textarea.Model
senderStyle lipgloss.Style
err error
}
func initialModel() model {
ta := textarea.New()
ta.Placeholder = "Send a message..."
ta.Focus()
ta.Prompt = "┃ "
ta.CharLimit = 280
ta.SetWidth(30)
ta.SetHeight(3)
// Remove cursor line styling
ta.FocusedStyle.CursorLine = lipgloss.NewStyle()
ta.ShowLineNumbers = false
vp := viewport.New(30, 20)
vp.SetContent("Welcome to Eko!\n Type a message and press Enter to send.")
ta.KeyMap.InsertNewline.SetEnabled(false)
messages, err := getMessages()
assert.NoError(err, "TODO HANDLE ERROR")
vp.SetContent(strings.Join(messages, "\n"))
return model{
textarea: ta,
messages: messages,
viewport: vp,
senderStyle: lipgloss.NewStyle().Foreground(lipgloss.Color("5")),
err: nil,
}
}
func (m model) Init() tea.Cmd {
return textarea.Blink
}
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.WindowSizeMsg:
m.viewport.Width = msg.Width
m.textarea.SetWidth(msg.Width)
return m, tea.Printf("%dx%d", msg.Width, msg.Height)
case tea.KeyMsg:
switch msg.Type {
case tea.KeyEsc, tea.KeyCtrlC:
// Quit.
fmt.Println(m.textarea.Value())
return m, tea.Quit
case tea.KeyEnter:
value := m.textarea.Value()
content := strings.TrimSpace(value)
if content == "" {
// Don't send empty messages.
return m, nil
}
assert.NoError(sendMessage(content), "TODO HANDLE ERROR")
messages, err := getMessages()
assert.NoError(err, "TODO HANDLE ERROR")
// m.messages = append(m.messages, m.senderStyle.Render("You: ")+content)
m.messages = messages
m.viewport.SetContent(strings.Join(m.messages, "\n"))
m.textarea.Reset()
m.viewport.GotoBottom()
return m, nil
default:
// Send all other keypresses to the textarea.
var cmd tea.Cmd
m.textarea, cmd = m.textarea.Update(msg)
return m, cmd
}
case cursor.BlinkMsg:
// Textarea should also process cursor blinks.
var cmd tea.Cmd
m.textarea, cmd = m.textarea.Update(msg)
return m, cmd
default:
return m, nil
}
}
func (m model) View() string {
return fmt.Sprintf(
"%s\n\n%s",
m.viewport.View(),
m.textarea.View(),
) + "\n\n"
}
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