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package cli
import (
"fmt"
"strings"
"github.com/charmbracelet/bubbles/spinner"
"github.com/charmbracelet/bubbles/textinput"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"github.com/hachem-wtf/benson/internal/config"
)
type command struct {
name string
desc string
run func(m *model) tea.Cmd
}
type outputMsg struct {
text string
}
type model struct {
cfg *config.Config
version string
input textinput.Model
spin spinner.Model
commands []command
busy bool
quitting bool
width int
}
func Run(version string) error {
cfg, err := config.Load()
if err != nil {
return fmt.Errorf("failed to load %s: %w", config.Path(), err)
}
_, err = tea.NewProgram(newModel(cfg, version)).Run()
return err
}
func newModel(cfg *config.Config, version string) *model {
ti := textinput.New()
ti.Placeholder = "type a command… (try 'help')"
ti.Prompt = ""
ti.CharLimit = 128
ti.Focus()
sp := spinner.New()
sp.Spinner = spinner.Dot
sp.Style = lipgloss.NewStyle().Foreground(colPrimary)
m := &model{
cfg: cfg,
version: version,
input: ti,
spin: sp,
}
m.commands = defaultCommands()
return m
}
func (m *model) Init() tea.Cmd {
return tea.Batch(textinput.Blink, tea.Println(welcomeBlock(m.cfg, m.version)))
}
func (m *model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.WindowSizeMsg:
m.width = msg.Width
m.input.Width = max(msg.Width-12, 20)
return m, nil
case tea.KeyMsg:
switch msg.Type {
case tea.KeyCtrlC, tea.KeyCtrlD:
m.quitting = true
return m, tea.Quit
case tea.KeyTab:
if s := m.firstSuggestion(); s != "" {
m.input.SetValue(s)
m.input.CursorEnd()
}
return m, nil
case tea.KeyEnter:
if m.busy {
return m, nil
}
return m, m.submit()
}
case outputMsg:
m.busy = false
return m, tea.Println(msg.text)
case spinner.TickMsg:
var cmd tea.Cmd
m.spin, cmd = m.spin.Update(msg)
return m, cmd
}
var cmd tea.Cmd
m.input, cmd = m.input.Update(msg)
return m, cmd
}
func (m *model) View() string {
if m.quitting {
return ""
}
return "\n" + m.suggestionRow() + "\n" + m.promptLine() + "\n"
}
func (m *model) submit() tea.Cmd {
raw := strings.TrimSpace(m.input.Value())
m.input.Reset()
if raw == "" {
return nil
}
echo := tea.Println(promptStyle.Render("benson ❯ ") + raw)
name := strings.ToLower(strings.Fields(raw)[0])
if name == "?" {
name = "help"
}
if isExit(name) {
m.quitting = true
return tea.Sequence(echo, tea.Println(mutedStyle.Render("Goodbye!")), tea.Quit)
}
if c := m.find(name); c != nil {
return tea.Sequence(echo, c.run(m))
}
unknown := tea.Println(errorStyle.Render("Unknown command: "+name) + mutedStyle.Render(" · type 'help'"))
return tea.Sequence(echo, unknown)
}
func (m *model) find(name string) *command {
for i := range m.commands {
if m.commands[i].name == name {
return &m.commands[i]
}
}
return nil
}
func isExit(name string) bool {
switch name {
case "exit", "quit", "q":
return true
}
return false
}
func (m *model) promptLine() string {
if m.busy {
return " " + m.spin.View() + " " + mutedStyle.Render("working…")
}
return promptStyle.Render(" benson ❯ ") + m.input.View()
}
func (m *model) suggestionRow() string {
cur := strings.ToLower(strings.TrimSpace(m.input.Value()))
chips := make([]string, 0, len(m.commands)+1)
for _, c := range m.commands {
if cur != "" && strings.HasPrefix(c.name, cur) {
chips = append(chips, chipActiveStyle.Render(c.name))
} else {
chips = append(chips, chipStyle.Render(c.name))
}
}
chips = append(chips, chipStyle.Render("exit"))
return " " + lipgloss.JoinHorizontal(lipgloss.Left, chips...)
}
func (m *model) firstSuggestion() string {
cur := strings.ToLower(strings.TrimSpace(m.input.Value()))
if cur == "" {
return ""
}
for _, c := range m.commands {
if c.name != cur && strings.HasPrefix(c.name, cur) {
return c.name
}
}
return ""
}
|
