amethyst/app/src/main/java/com/vitorpamplona/amethyst/service/NostrThreadDataSource.kt

44 wiersze
1.4 KiB
Kotlin

package com.vitorpamplona.amethyst.service
import com.vitorpamplona.amethyst.model.ThreadAssembler
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.relays.TypedFilter
object NostrThreadDataSource : NostrDataSource("SingleThreadFeed") {
private var eventToWatch: String? = null
fun createLoadEventsIfNotLoadedFilter(): TypedFilter? {
val threadToLoad = eventToWatch ?: return null
val eventsToLoad = ThreadAssembler().findThreadFor(threadToLoad)
.filter { it.event == null }
.map { it.idHex }
.toSet()
.ifEmpty { null } ?: return null
return TypedFilter(
types = FeedType.values().toSet(),
filter = JsonFilter(
ids = eventsToLoad.map { it.substring(0, 8) }
)
)
}
val loadEventsChannel = requestNewChannel() { eoseTime, relay ->
// Many relays operate with limits in the amount of filters.
// As information comes, the filters will be rotated to get more data.
invalidateFilters()
}
override fun updateChannelFilters() {
loadEventsChannel.typedFilters = listOfNotNull(createLoadEventsIfNotLoadedFilter()).ifEmpty { null }
}
fun loadThread(noteId: String?) {
eventToWatch = noteId
invalidateFilters()
}
}