package io.rebble.libpebblecommon.calendar

import io.rebble.libpebblecommon.database.entity.CalendarEntity
import kotlinx.coroutines.flow.Flow
import kotlin.time.Instant

interface SystemCalendar {
    suspend fun getCalendars(): List<CalendarEntity>
    suspend fun getCalendarEvents(calendar: CalendarEntity, startDate: Instant, endDate: Instant): List<CalendarEvent>
    suspend fun enableSyncForCalendar(calendar: CalendarEntity)
    fun registerForCalendarChanges(): Flow<Unit>?
    fun hasPermission(): Boolean

    /**
     * Whether this platform can execute write-back pin actions (RSVP, cancel event).
     * Android: yes, via CalendarContract. iOS: no — EKParticipant is read-only and
     * EKEvent mutation requires user-owned calendars we don't reliably identify.
     */
    fun supportsPinActions(): Boolean
}