package router

import (
	"fmt"
	"strings"
	"time"
)

// CalendarEventFormatter formats calendar events into a Russian reply string.
type CalendarEventFormatter struct{}

// Format returns a Russian reply for the given calendar events on the given date.
func (CalendarEventFormatter) Format(events []string, date time.Time) string {
	dateStr := date.Format("02.01.2006")
	if len(events) == 0 {
		return fmt.Sprintf("на %s ничего нет.", dateStr)
	}
	return fmt.Sprintf("на %s: %s", dateStr, strings.Join(events, "; "))
}