Allow editing time entry start and end in TUI and web.

Duration is derived from the range so timer sessions can be corrected after the fact.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/ui/views/timeedit.go

@@ -0,0 +1,154 @@
+package views
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/charmbracelet/bubbles/textinput"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+
+	"task/internal/ticket"
+)
+
+// Time edit field indices.
+const (
+	FieldTimeStart = iota
+	FieldTimeEnd
+	TimeEditFieldCount
+)
+
+const timeEditLayout = "2006-01-02 15:04"
+
+// TimeEditStyles styles the time-entry edit form.
+type TimeEditStyles struct {
+	Label   lipgloss.Style
+	Focused lipgloss.Style
+	Blurred lipgloss.Style
+	Hint    lipgloss.Style
+	Title   lipgloss.Style
+}
+
+// DefaultTimeEditStyles returns sensible defaults.
+func DefaultTimeEditStyles() TimeEditStyles {
+	return TimeEditStyles{
+		Label:   lipgloss.NewStyle().Foreground(lipgloss.Color("245")),
+		Focused: lipgloss.NewStyle().Foreground(lipgloss.Color("205")),
+		Blurred: lipgloss.NewStyle().Foreground(lipgloss.Color("240")),
+		Hint:    lipgloss.NewStyle().Foreground(lipgloss.Color("241")),
+		Title:   lipgloss.NewStyle().Bold(true),
+	}
+}
+
+// TimeEditForm edits start and end of a time entry.
+type TimeEditForm struct {
+	Inputs []textinput.Model
+	Focus  int
+	Styles TimeEditStyles
+	Width  int
+}
+
+// NewTimeEditForm builds a form prefilled from an entry.
+func NewTimeEditForm(e ticket.TimeEntry, width int) TimeEditForm {
+	styles := DefaultTimeEditStyles()
+	inputs := make([]textinput.Model, TimeEditFieldCount)
+
+	mk := func(placeholder string) textinput.Model {
+		ti := textinput.New()
+		ti.Placeholder = placeholder
+		ti.CharLimit = 16
+		ti.Width = max(20, width-10)
+		return ti
+	}
+
+	inputs[FieldTimeStart] = mk(timeEditLayout)
+	inputs[FieldTimeEnd] = mk(timeEditLayout)
+	if !e.Start.IsZero() {
+		inputs[FieldTimeStart].SetValue(e.Start.Local().Format(timeEditLayout))
+	}
+	if !e.End.IsZero() {
+		inputs[FieldTimeEnd].SetValue(e.End.Local().Format(timeEditLayout))
+	} else if !e.Start.IsZero() && e.Duration > 0 {
+		inputs[FieldTimeEnd].SetValue(e.Start.Add(e.Duration).Local().Format(timeEditLayout))
+	}
+
+	f := TimeEditForm{
+		Inputs: inputs,
+		Focus:  FieldTimeStart,
+		Styles: styles,
+		Width:  width,
+	}
+	f.focusIndex(FieldTimeStart)
+	return f
+}
+
+func (f *TimeEditForm) focusIndex(i int) {
+	f.Focus = i
+	for idx := range f.Inputs {
+		if idx == i {
+			f.Inputs[idx].Focus()
+			f.Inputs[idx].PromptStyle = f.Styles.Focused
+			f.Inputs[idx].TextStyle = f.Styles.Focused
+		} else {
+			f.Inputs[idx].Blur()
+			f.Inputs[idx].PromptStyle = f.Styles.Blurred
+			f.Inputs[idx].TextStyle = f.Styles.Blurred
+		}
+	}
+}
+
+// NextField moves focus to the next field.
+func (f *TimeEditForm) NextField() {
+	f.focusIndex((f.Focus + 1) % TimeEditFieldCount)
+}
+
+// PrevField moves focus to the previous field.
+func (f *TimeEditForm) PrevField() {
+	f.focusIndex((f.Focus - 1 + TimeEditFieldCount) % TimeEditFieldCount)
+}
+
+// Update forwards a message to the focused text input.
+func (f *TimeEditForm) Update(msg tea.Msg) tea.Cmd {
+	var cmd tea.Cmd
+	f.Inputs[f.Focus], cmd = f.Inputs[f.Focus].Update(msg)
+	return cmd
+}
+
+// Parse returns start and end in UTC, or an error.
+func (f TimeEditForm) Parse() (start, end time.Time, err error) {
+	startRaw := strings.TrimSpace(f.Inputs[FieldTimeStart].Value())
+	endRaw := strings.TrimSpace(f.Inputs[FieldTimeEnd].Value())
+	if startRaw == "" || endRaw == "" {
+		return time.Time{}, time.Time{}, fmt.Errorf("start and end are required")
+	}
+	start, err = time.ParseInLocation(timeEditLayout, startRaw, time.Local)
+	if err != nil {
+		return time.Time{}, time.Time{}, fmt.Errorf("start: use %s", timeEditLayout)
+	}
+	end, err = time.ParseInLocation(timeEditLayout, endRaw, time.Local)
+	if err != nil {
+		return time.Time{}, time.Time{}, fmt.Errorf("end: use %s", timeEditLayout)
+	}
+	if !end.After(start) {
+		return time.Time{}, time.Time{}, fmt.Errorf("end must be after start")
+	}
+	return start.UTC(), end.UTC(), nil
+}
+
+// View renders the form.
+func (f TimeEditForm) View() string {
+	var b strings.Builder
+	b.WriteString(f.Styles.Title.Render("Edit time entry"))
+	b.WriteString("\n\n")
+	labels := []string{"Start", "End"}
+	for i, label := range labels {
+		b.WriteString(f.Styles.Label.Render(label+":"))
+		b.WriteString(" ")
+		b.WriteString(f.Inputs[i].View())
+		b.WriteString("\n")
+	}
+	b.WriteString("\n")
+	b.WriteString(f.Styles.Hint.Render("format " + timeEditLayout + " · tab fields · enter save · esc cancel"))
+	return b.String()
+}