Add Calendar Events widget, integrate ICS calendar parsing, and refine related UI components

widgets/calendarEvents.go

@@ -0,0 +1,89 @@
+package widgets
+
+import (
+	"ArinDash/apis/calendar"
+	"ArinDash/util"
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/mum4k/termdash/cell"
+	"github.com/mum4k/termdash/terminal/terminalapi"
+	"github.com/mum4k/termdash/widgetapi"
+	"github.com/mum4k/termdash/widgets/text"
+)
+
+type CalendarEventsOptions struct {
+}
+
+func CalendarEvents() CalendarEventsOptions {
+	widgetOptions["CalendarEventsOptions"] = createCalendarEventsOptions
+	return CalendarEventsOptions{}
+}
+
+func createCalendarEventsOptions(ctx context.Context, _ terminalapi.Terminal, _ interface{}) widgetapi.Widget {
+	widget := util.PanicOnErrorWithResult(text.New(text.WrapAtWords()))
+	go util.Periodic(ctx, 1*time.Hour, func() error {
+		widget.Reset()
+		calendarEvents := calendar.FetchEvents()
+		for _, event := range calendarEvents {
+			var color cell.Color
+			onlySummary := false
+			if isToday(event.Start) {
+				color = cell.ColorGreen
+			} else if event.Start.After(time.Now().AddDate(0, 0, 7)) {
+				color = cell.ColorGray
+				onlySummary = true
+			} else {
+				color = cell.ColorWhite
+			}
+			summary := event.Summary
+			if onlySummary {
+				summary = fmt.Sprintf("%s %s", event.Start.Format(time.DateOnly), event.Summary)
+			}
+			if err := widget.Write(fmt.Sprintf("%s %s\n", event.Icon, summary), text.WriteCellOpts(cell.FgColor(color), cell.Bold())); err != nil {
+				return err
+			}
+			if !onlySummary {
+				var date string
+				if event.Start == event.End {
+					date = formatDate(event.Start)
+				} else {
+					date = fmt.Sprintf("%s - %s", formatDate(event.Start), formatDate(event.End))
+				}
+				if err := widget.Write(fmt.Sprintf("%s\n", date), text.WriteCellOpts(cell.FgColor(color), cell.Dim())); err != nil {
+					return err
+				}
+				if err := widget.Write(fmt.Sprintf("%s\n", event.Description), text.WriteCellOpts(cell.FgColor(color))); err != nil {
+					return err
+				}
+				if err := widget.Write(fmt.Sprintf("%s\n\n", event.Location), text.WriteCellOpts(cell.FgColor(color))); err != nil {
+					return err
+				}
+			}
+
+		}
+		return nil
+	})
+
+	return widget
+}
+
+func isToday(date time.Time) bool {
+	year, month, day := date.Date()
+	return year == time.Now().Year() && month == time.Now().Month() && day == time.Now().Day()
+}
+
+func isTomorrow(date time.Time) bool {
+	year, month, day := date.Date()
+	return year == time.Now().Year() && month == time.Now().Month() && day == time.Now().AddDate(0, 0, 1).Day()
+}
+
+func formatDate(date time.Time) string {
+	if isToday(date) {
+		return fmt.Sprintf("Today at %s", date.Format(time.TimeOnly))
+	} else if isTomorrow(date) {
+		return fmt.Sprintf("Tomorrow at %s", date.Format(time.TimeOnly))
+	}
+	return date.Format(time.DateTime)
+}