Unable catch errors while creating textinput based wizard

[shreyasp]

I am currently trying to create a utility similar to wget --mirror using a text input-based wizard to collect details from the user to obtain a website URL to mirror from the user as part of the wizard.

You can find the code for the text input model below,

package textinput

import (
	"errors"
	"fmt"
	"net/url"

	"github.com/charmbracelet/bubbles/textinput"
	tea "github.com/charmbracelet/bubbletea"
	"github.com/charmbracelet/lipgloss"
)

var (
	titleStyle = lipgloss.NewStyle().Background(lipgloss.Color("#01FAC6")).Foreground(lipgloss.Color("#030303")).Bold(true).Padding(0, 1, 0)
	errorStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("#FF8700")).Bold(true).Padding(0, 0, 0)
)

type Output struct {
	Output string
}

func (o *Output) update(v string) {
	o.Output = v
}

type errMsg struct {
	err error
}

func (e errMsg) Error() string {
	return e.err.Error()
}

type model struct {
	textInput textinput.Model
	err       error
	output    *Output
	header    string
}

func InitTextInputModel(o *Output, header string) model {
	ti := textinput.New()
	ti.Focus()
	ti.CharLimit = 255
	ti.Width = 20

	return model{
		textInput: ti,
		err:       nil,
		output:    o,
		header:    titleStyle.Render(header),
	}
}

func CreateErrorInputModel(err error) model {
	ti := textinput.New()
	ti.Focus()
	ti.CharLimit = 255
	ti.Width = 20

	return model{
		textInput: ti,
		output:    nil,
		header:    "",
	}
}

func (m model) Init() tea.Cmd {
	return textinput.Blink
}

func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	var cmd tea.Cmd

	switch msg := msg.(type) {
	case tea.KeyMsg:
		switch msg.Type {
		case tea.KeyEnter:
			if len(m.textInput.Value()) > 1 {
				if _, err := url.ParseRequestURI(m.textInput.Value()); err != nil {
					m.err = errors.New(errorStyle.Render(err.Error()))
					return m, tea.Quit
				}

				m.output.update(m.textInput.Value())
				return m, tea.Quit
			}
		case tea.KeyCtrlC, tea.KeyEsc:
			return m, tea.Quit
		}
	case errMsg:
		m.err = msg
		return m, tea.Quit
	}

	m.textInput, cmd = m.textInput.Update(msg)
	return m, cmd
}

func (m model) View() string {
	if m.err != nil {
		return fmt.Sprintf("\n\n%s", m.err.Error())
	}

	return fmt.Sprintf("%s\n\n%s\n\n",
		m.header,
		m.textInput.View(),
	)
}

I want to raise an error whenever a user inputs an incorrect URL. But, somehow, the view function doesn't produce or render the error message to the screen. I would be grateful if you could resolve the mistake I am making here in the text input model. Thanks.

[bashbunni]

hey @shreyasp I can't run the example you provided above. One thing I would change is I would render the error in View(). To confirm, it is creating that error when you're testing it right? It's just not showing a final redraw?