add confirmation prompt bubbletea widget example

examples/confirmation_bubbletea_widget/main.go

@@ -0,0 +1,101 @@
+// Package main demonstrates how promptkit can be used as a bubbletea widget.
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	tea "github.com/charmbracelet/bubbletea"
+
+	"github.com/erikgeiser/promptkit"
+	"github.com/erikgeiser/promptkit/confirmation"
+)
+
+type confirmationPrompt struct {
+	prompt       string
+	selection    bool
+	confirmation *confirmation.Model
+	err          error
+}
+
+func newConfirmationPrompt(prompt string) *confirmationPrompt {
+	return &confirmationPrompt{prompt: prompt}
+}
+
+var _ tea.Model = &confirmationPrompt{}
+
+func (c *confirmationPrompt) Init() tea.Cmd {
+	// Here we show how to specify your own keyMap since the default uses left
+	// and right arrow keys which you may already be using.
+	keyMap := &confirmation.KeyMap{
+		Yes:    []string{"y", "Y"},
+		No:     []string{"n", "N"},
+		Toggle: []string{"tab"},
+		Submit: []string{"enter"},
+		Abort:  []string{"ctrl+c"},
+	}
+
+	conf := &confirmation.Confirmation{
+		Prompt:         c.prompt,
+		DefaultValue:   confirmation.Undecided,
+		Template:       confirmation.DefaultTemplate,
+		ResultTemplate: confirmation.DefaultResultTemplate,
+		KeyMap:         keyMap,
+		WrapMode:       promptkit.Truncate,
+	}
+	c.confirmation = confirmation.NewModel(conf)
+
+	return c.confirmation.Init()
+}
+
+func (c *confirmationPrompt) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	keyMsg, ok := msg.(tea.KeyMsg)
+	if !ok {
+		return c, nil
+	}
+
+	switch {
+	case keyMsg.String() == "enter":
+		selection, err := c.confirmation.Value()
+		if err != nil {
+			c.err = err
+			return c, tea.Quit
+		}
+
+		c.selection = selection
+	case keyMsg.String() == "esc":
+		return c, tea.Quit
+	default:
+		_, cmd := c.confirmation.Update(msg)
+		return c, cmd
+	}
+
+	return c, nil
+}
+
+func (c *confirmationPrompt) View() string {
+	if c.err != nil {
+		return fmt.Sprintf("Error: %v", c.err)
+	}
+
+	var b strings.Builder
+	b.WriteString(c.confirmation.View())
+	b.WriteString("\n=== You Chose: ===\n")
+	b.WriteString(fmt.Sprintf("%t", c.selection))
+
+	return b.String()
+}
+
+func main() {
+	model := newConfirmationPrompt("Would you like to go shopping?")
+
+	p := tea.NewProgram(model)
+
+	_, err := p.Run()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v", err)
+
+		os.Exit(1)
+	}
+}