amethyst/app/src/main/java/com/vitorpamplona/amethyst/service/model/RepostEvent.kt

55 wiersze
1.9 KiB
Kotlin

package com.vitorpamplona.amethyst.service.model
import com.vitorpamplona.amethyst.model.HexKey
import com.vitorpamplona.amethyst.model.toHexKey
import com.vitorpamplona.amethyst.service.relays.Client
import nostr.postr.Utils
import java.util.Date
class RepostEvent(
id: HexKey,
pubKey: HexKey,
createdAt: Long,
tags: List<List<String>>,
content: String,
sig: HexKey
) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
fun boostedPost() = tags.filter { it.firstOrNull() == "e" }.mapNotNull { it.getOrNull(1) }
fun originalAuthor() = tags.filter { it.firstOrNull() == "p" }.mapNotNull { it.getOrNull(1) }
fun taggedAddresses() = tags.filter { it.firstOrNull() == "a" }.mapNotNull {
val aTagValue = it.getOrNull(1)
val relay = it.getOrNull(2)
if (aTagValue != null) ATag.parse(aTagValue, relay) else null
}
fun containedPost() = try {
fromJson(content, Client.lenient)
} catch (e: Exception) {
null
}
companion object {
const val kind = 6
fun create(boostedPost: EventInterface, privateKey: ByteArray, createdAt: Long = Date().time / 1000): RepostEvent {
val content = boostedPost.toJson()
val replyToPost = listOf("e", boostedPost.id())
val replyToAuthor = listOf("p", boostedPost.pubKey())
val pubKey = Utils.pubkeyCreate(privateKey).toHexKey()
var tags: List<List<String>> = boostedPost.tags().plus(listOf(replyToPost, replyToAuthor))
if (boostedPost is LongTextNoteEvent) {
tags = tags + listOf(listOf("a", boostedPost.address().toTag()))
}
val id = generateId(pubKey, createdAt, kind, tags, content)
val sig = Utils.sign(id, privateKey)
return RepostEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig.toHexKey())
}
}
}