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package tui
import (
"errors"
"fmt"
"strconv"
"time"
"github.com/charmbracelet/bubbles/textinput"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
)
type FormField struct {
textinput.Model
label string
}
func (ff FormField) Update(msg tea.Msg) (FormField, tea.Cmd) {
field, cmd := ff.Model.Update(msg)
ff.Model = field
return ff, cmd
}
func newTimestampField(label string) FormField {
f := FormField{
Model: textinput.New(),
label: label,
}
f.Validate = func(s string) error {
if _, err := time.Parse(time.DateTime, s); err != nil {
return fmt.Errorf("timestamps must be written like \"%s\"", time.DateTime)
}
return nil
}
return f
}
func newOptionalTimestampField(label string) FormField {
f := FormField{
Model: textinput.New(),
label: label,
}
f.Validate = func(s string) error {
if s == "" {
return nil
}
if _, err := time.Parse(time.DateTime, s); err != nil {
return fmt.Errorf("timestamps must be written like \"%s\"", time.DateTime)
}
return nil
}
return f
}
func newOptionalFloatField(label string) FormField {
f := FormField{
Model: textinput.New(),
label: label,
}
f.Validate = func(s string) error {
if s == "" {
return nil
}
_, err := strconv.ParseFloat(s, 64)
if err != nil {
return errors.New("numerical values only")
}
return nil
}
return f
}
type Form struct {
fields []FormField
selIdx int
SelectedStyle *lipgloss.Style
UnselectedStyle *lipgloss.Style
}
func NewForm(fields []FormField) Form {
return Form{fields: fields}
}
func (ff Form) Error() error {
for _, field := range ff.fields {
if field.Err != nil {
return field.Err
}
}
return nil
}
func NewEntryEditorForm() Form {
form := NewForm([]FormField{
newTimestampField("Start time"),
newOptionalTimestampField("End time"),
{Model: textinput.New(), label: "Client"},
{Model: textinput.New(), label: "Project"},
{Model: textinput.New(), label: "Description"},
newOptionalFloatField("Hourly Rate"),
})
form.SelectedStyle = &modalFocusedInputStyle
form.UnselectedStyle = &modalBlurredInputStyle
return form
}
func (ff Form) Update(msg tea.Msg) (Form, tea.Cmd) {
if msg, ok := msg.(tea.KeyMsg); ok {
switch msg.String() {
case "tab":
ff.fields[ff.selIdx].Blur()
ff.selIdx = (ff.selIdx + 1) % len(ff.fields)
return ff, ff.fields[ff.selIdx].Focus()
case "shift+tab":
ff.fields[ff.selIdx].Blur()
ff.selIdx--
if ff.selIdx < 0 {
ff.selIdx += len(ff.fields)
}
return ff, ff.fields[ff.selIdx].Focus()
}
}
field, cmd := ff.fields[ff.selIdx].Update(msg)
ff.fields[ff.selIdx] = field
return ff, cmd
}
func (ff Form) View() string {
content := ""
for i, field := range ff.fields {
if i > 0 {
content += "\n\n"
}
content += field.label + ":\n"
style := ff.UnselectedStyle
if i == ff.selIdx {
style = ff.SelectedStyle
}
if style != nil {
content += style.Render(field.View())
} else {
content += field.View()
}
if field.Err != nil {
content += "\n" + errorStyle.Render(field.Err.Error())
}
}
return content
}
var (
modalFocusedInputStyle = lipgloss.NewStyle().
Border(lipgloss.DoubleBorder()).
BorderForeground(lipgloss.Color("238"))
modalBlurredInputStyle = lipgloss.NewStyle().
Border(lipgloss.NormalBorder()).
BorderForeground(lipgloss.Color("238"))
errorStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("196"))
)
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