feat: add datepicker dependency and init helper

Claude-Session: https://claude.ai/code/session_01BA1doywpQD49rP1vezTe9U

go.mod

@@ -19,6 +19,7 @@ require (
 	github.com/charmbracelet/x/term v0.2.1 // indirect
 	github.com/dlclark/regexp2 v1.11.5 // indirect
 	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
+	github.com/ethanefung/bubble-datepicker v0.1.1 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
@@ -29,5 +30,5 @@ require (
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
 	golang.org/x/sys v0.36.0 // indirect
-	golang.org/x/text v0.3.8 // indirect
+	golang.org/x/text v0.13.0 // indirect
 )

go.sum

@@ -34,6 +34,8 @@ github.com/dlclark/regexp2 v1.11.5 h1:Q/sSnsKerHeCkc/jSTNq1oCm7KiVgUMZRDUoRu0JQZ
 github.com/dlclark/regexp2 v1.11.5/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
 github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f h1:Y/CXytFA4m6baUTXGLOoWe4PQhGxaX0KpnayAqC48p4=
 github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f/go.mod h1:vw97MGsxSvLiUE2X8qFplwetxpGLQrlU1Q9AUEIzCaM=
+github.com/ethanefung/bubble-datepicker v0.1.1 h1:+12ZTE4ANZ2cAgYURXzDwG0z+rDMwo4Ljfxhs5B0okc=
+github.com/ethanefung/bubble-datepicker v0.1.1/go.mod h1:8nxOYB9Oqays5U0JHKcIsbT7ZP/TwuJz8Uju9n5ueVU=
 github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
 github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
@@ -63,3 +65,5 @@ golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
 golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
 golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
+golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=

internal/ui/app.go

@@ -8,6 +8,7 @@ import (
 	"github.com/charmbracelet/bubbles/textarea"
 	"github.com/charmbracelet/bubbles/textinput"
 	tea "github.com/charmbracelet/bubbletea"
+	datepicker "github.com/ethanefung/bubble-datepicker"
 	"github.com/rwejlgaard/org/internal/config"
 	"github.com/rwejlgaard/org/internal/model"
 )
@@ -54,6 +55,8 @@ type uiModel struct {
 	settingsScroll  int             // Scroll position in settings view
 	settingsSection settingsSection // Current settings section/tab
 	captureCursor   int             // Store cursor position when entering capture mode
+	datepicker      datepicker.Model
+	dateTextFocused bool // within set-date modes: text field focused vs. calendar
 }
 
 func InitialModel(orgFile *model.OrgFile, cfg *config.Config, captureMode bool, captureText string) uiModel {

internal/ui/datepicker_test.go

@@ -0,0 +1,43 @@
+package ui
+
+import (
+	"testing"
+	"time"
+
+	tea "github.com/charmbracelet/bubbletea"
+	datepicker "github.com/ethanefung/bubble-datepicker"
+)
+
+func sameDay(a, b time.Time) bool {
+	return a.Year() == b.Year() && a.Month() == b.Month() && a.Day() == b.Day()
+}
+
+func TestNewDatePickerDefaultsToToday(t *testing.T) {
+	dp := newDatePicker(nil)
+	if !sameDay(dp.Time, time.Now()) {
+		t.Fatalf("expected today, got %v", dp.Time)
+	}
+	if !dp.Selected {
+		t.Fatal("expected date to be selected")
+	}
+	if dp.Focused != datepicker.FocusCalendar {
+		t.Fatalf("expected FocusCalendar, got %v", dp.Focused)
+	}
+	// Quit binding must be disabled so 'q' does not quit the app from the calendar.
+	if dp.KeyMap.Quit.Enabled() && len(dp.KeyMap.Quit.Keys()) > 0 {
+		t.Fatalf("expected Quit binding disabled, got keys %v", dp.KeyMap.Quit.Keys())
+	}
+	// Forwarding a 'q' key must not produce tea.Quit.
+	_, cmd := dp.Update(tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune{'q'}})
+	if cmd != nil {
+		t.Fatal("expected no command from 'q' after disabling Quit")
+	}
+}
+
+func TestNewDatePickerUsesExisting(t *testing.T) {
+	existing := time.Date(2027, time.March, 9, 0, 0, 0, 0, time.Local)
+	dp := newDatePicker(&existing)
+	if !sameDay(dp.Time, existing) {
+		t.Fatalf("expected %v, got %v", existing, dp.Time)
+	}
+}

internal/ui/modes.go

@@ -9,6 +9,7 @@ import (
 	"github.com/charmbracelet/bubbles/textarea"
 	"github.com/charmbracelet/bubbles/textinput"
 	tea "github.com/charmbracelet/bubbletea"
+	datepicker "github.com/ethanefung/bubble-datepicker"
 	"github.com/rwejlgaard/org/internal/model"
 	"github.com/rwejlgaard/org/internal/parser"
 )
@@ -573,6 +574,21 @@ func (m uiModel) updateAddSubTask(msg tea.Msg) (tea.Model, tea.Cmd) {
 	return m, cmd
 }
 
+// newDatePicker returns a calendar-focused datepicker seeded with existing (if
+// non-nil) or today. The Quit binding is cleared so 'q'/ctrl+c do not quit the
+// app while the calendar has focus.
+func newDatePicker(existing *time.Time) datepicker.Model {
+	t := time.Now()
+	if existing != nil {
+		t = *existing
+	}
+	dp := datepicker.New(t)
+	dp.SelectDate()
+	dp.SetFocus(datepicker.FocusCalendar)
+	dp.KeyMap.Quit = key.Binding{}
+	return dp
+}
+
 func (m uiModel) updateSetDeadline(msg tea.Msg) (tea.Model, tea.Cmd) {
 	return m.updateSetDate(msg, "DEADLINE")
 }